查看tomcat啓動文件都乾點啥---catalina.bat
在上一次查看tomcat啓動文件都乾點啥一文中，咱們總結出，startup.bat文件的做用就是找到catalina.bat文件，而後把參數傳遞給它，在startup.bat中，調用catalina.bat的命令call "%EXECUTABLE%" start %CMD_LINE_ARGS%，其中"%EXECUTABLE%"這個就是catalina.bat文件，這個命令至少向catalina.bat傳遞一個參數--start.html
接下來看一下catalina.bat中的內容，內容很長：java
1 @echo off 2 rem Licensed to the Apache Software Foundation (ASF) under one or more 3 rem contributor license agreements. See the NOTICE file distributed with 4 rem this work for additional information regarding copyright ownership. 5 rem The ASF licenses this file to You under the Apache License, Version 2.0 6 rem (the "License"); you may not use this file except in compliance with 7 rem the License. You may obtain a copy of the License at 8 rem 9 rem http://www.apache.org/licenses/LICENSE-2.0 10 rem 11 rem Unless required by applicable law or agreed to in writing, software 12 rem distributed under the License is distributed on an "AS IS" BASIS, 13 rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 rem See the License for the specific language governing permissions and 15 rem limitations under the License. 16 17 if "%OS%" == "Windows_NT" setlocal 18 rem --------------------------------------------------------------------------- 19 rem Start/Stop Script for the CATALINA Server 20 rem 21 rem Environment Variable Prerequisites 22 rem 23 rem CATALINA_HOME May point at your Catalina "build" directory. 24 rem 25 rem CATALINA_BASE (Optional) Base directory for resolving dynamic portions 26 rem of a Catalina installation. If not present, resolves to 27 rem the same directory that CATALINA_HOME points to. 28 rem 29 rem CATALINA_OPTS (Optional) Java runtime options used when the "start", 30 rem or "run" command is executed. 31 rem 32 rem CATALINA_TMPDIR (Optional) Directory path location of temporary directory 33 rem the JVM should use (java.io.tmpdir). Defaults to 34 rem %CATALINA_BASE%\temp. 35 rem 36 rem JAVA_HOME Must point at your Java Development Kit installation. 37 rem Required to run the with the "debug" argument. 38 rem 39 rem JRE_HOME Must point at your Java Runtime installation. 40 rem Defaults to JAVA_HOME if empty. 41 rem 42 rem JAVA_OPTS (Optional) Java runtime options used when the "start", 43 rem "stop", or "run" command is executed. 44 rem 45 rem JAVA_ENDORSED_DIRS (Optional) Lists of of semi-colon separated directories 46 rem containing some jars in order to allow replacement of APIs 47 rem created outside of the JCP (i.e. DOM and SAX from W3C). 48 rem It can also be used to update the XML parser implementation. 49 rem Defaults to $CATALINA_HOME/endorsed. 50 rem 51 rem JPDA_TRANSPORT (Optional) JPDA transport used when the "jpda start" 52 rem command is executed. The default is "dt_socket". 53 rem 54 rem JPDA_ADDRESS (Optional) Java runtime options used when the "jpda start" 55 rem command is executed. The default is 8000. 56 rem 57 rem JPDA_SUSPEND (Optional) Java runtime options used when the "jpda start" 58 rem command is executed. Specifies whether JVM should suspend 59 rem execution immediately after startup. Default is "n". 60 rem 61 rem JPDA_OPTS (Optional) Java runtime options used when the "jpda start" 62 rem command is executed. If used, JPDA_TRANSPORT, JPDA_ADDRESS, 63 rem and JPDA_SUSPEND are ignored. Thus, all required jpda 64 rem options MUST be specified. The default is: 65 rem 66 rem -agentlib:jdwp=transport=%JPDA_TRANSPORT%, 67 rem address=%JPDA_ADDRESS%,server=y,suspend=%JPDA_SUSPEND% 68 rem 69 rem LOGGING_CONFIG (Optional) Override Tomcat's logging config file 70 rem Example (all one line) 71 rem set LOGGING_CONFIG="-Djava.util.logging.config.file=%CATALINA_BASE%\conf\logging.properties" 72 rem 73 rem LOGGING_MANAGER (Optional) Override Tomcat's logging manager 74 rem Example (all one line) 75 rem set LOGGING_MANAGER="-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager" 76 rem 77 rem TITLE (Optional) Specify the title of Tomcat window. The default 78 rem TITLE is Tomcat if it's not specified. 79 rem Example (all one line) 80 rem set TITLE=Tomcat.Cluster#1.Server#1 [%DATE% %TIME%] 81 rem 82 rem 83 rem 84 rem $Id: catalina.bat 1040546 2010-11-30 14:47:34Z markt $ 85 rem --------------------------------------------------------------------------- 86 87 rem Suppress Terminate batch job on CTRL+C 88 if not ""%1"" == ""run"" goto mainEntry 89 if ""%TEMP%"" == """" goto mainEntry 90 if exist "%TEMP%\%~nx0.run" goto mainEntry 91 echo Y>"%TEMP%\%~nx0.run" 92 if not exist "%TEMP%\%~nx0.run" goto mainEntry 93 echo Y>"%TEMP%\%~nx0.Y" 94 call "%~f0" %* <"%TEMP%\%~nx0.Y" 95 rem Use provided errorlevel 96 set RETVAL=%ERRORLEVEL% 97 del /Q "%TEMP%\%~nx0.Y" >NUL 2>&1 98 exit /B %RETVAL% 99 :mainEntry 100 del /Q "%TEMP%\%~nx0.run" >NUL 2>&1 101 102 rem Guess CATALINA_HOME if not defined 103 set "CURRENT_DIR=%cd%" 104 if not "%CATALINA_HOME%" == "" goto gotHome 105 set "CATALINA_HOME=%CURRENT_DIR%" 106 if exist "%CATALINA_HOME%\bin\catalina.bat" goto okHome 107 cd .. 108 set "CATALINA_HOME=%cd%" 109 cd "%CURRENT_DIR%" 110 :gotHome 111 if exist "%CATALINA_HOME%\bin\catalina.bat" goto okHome 112 echo The CATALINA_HOME environment variable is not defined correctly 113 echo This environment variable is needed to run this program 114 goto end 115 :okHome 116 117 rem Ensure that any user defined CLASSPATH variables are not used on startup, 118 rem but allow them to be specified in setenv.bat, in rare case when it is needed. 119 set CLASSPATH= 120 121 rem Get standard environment variables 122 if "%CATALINA_BASE%" == "" goto gotSetenvHome 123 if exist "%CATALINA_BASE%\bin\setenv.bat" call "%CATALINA_BASE%\bin\setenv.bat" 124 goto gotSetenvBase 125 :gotSetenvHome 126 if exist "%CATALINA_HOME%\bin\setenv.bat" call "%CATALINA_HOME%\bin\setenv.bat" 127 :gotSetenvBase 128 129 rem Get standard Java environment variables 130 if exist "%CATALINA_HOME%\bin\setclasspath.bat" goto okSetclasspath 131 echo Cannot find "%CATALINA_HOME%\bin\setclasspath.bat" 132 echo This file is needed to run this program 133 goto end 134 :okSetclasspath 135 set "BASEDIR=%CATALINA_HOME%" 136 call "%CATALINA_HOME%\bin\setclasspath.bat" %1 137 if errorlevel 1 goto end 138 139 rem Add on extra jar file to CLASSPATH 140 rem Note that there are no quotes as we do not want to introduce random 141 rem quotes into the CLASSPATH 142 if "%CLASSPATH%" == "" goto emptyClasspath 143 set "CLASSPATH=%CLASSPATH%;" 144 :emptyClasspath 145 set "CLASSPATH=%CLASSPATH%%CATALINA_HOME%\bin\bootstrap.jar" 146 147 if not "%CATALINA_BASE%" == "" goto gotBase 148 set "CATALINA_BASE=%CATALINA_HOME%" 149 :gotBase 150 151 if not "%CATALINA_TMPDIR%" == "" goto gotTmpdir 152 set "CATALINA_TMPDIR=%CATALINA_BASE%\temp" 153 :gotTmpdir 154 155 rem Add tomcat-juli.jar to classpath 156 rem tomcat-juli.jar can be over-ridden per instance 157 if not exist "%CATALINA_BASE%\bin\tomcat-juli.jar" goto juliClasspathHome 158 set "CLASSPATH=%CLASSPATH%;%CATALINA_BASE%\bin\tomcat-juli.jar" 159 goto juliClasspathDone 160 :juliClasspathHome 161 set "CLASSPATH=%CLASSPATH%;%CATALINA_HOME%\bin\tomcat-juli.jar" 162 :juliClasspathDone 163 164 if not "%LOGGING_CONFIG%" == "" goto noJuliConfig 165 set LOGGING_CONFIG=-Dnop 166 if not exist "%CATALINA_BASE%\conf\logging.properties" goto noJuliConfig 167 set LOGGING_CONFIG=-Djava.util.logging.config.file="%CATALINA_BASE%\conf\logging.properties" 168 :noJuliConfig 169 set JAVA_OPTS=%JAVA_OPTS% %LOGGING_CONFIG% 170 171 if not "%LOGGING_MANAGER%" == "" goto noJuliManager 172 set LOGGING_MANAGER=-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager 173 :noJuliManager 174 set JAVA_OPTS=%JAVA_OPTS% %LOGGING_MANAGER% 175 176 rem ----- Execute The Requested Command --------------------------------------- 177 178 echo Using CATALINA_BASE: "%CATALINA_BASE%" 179 echo Using CATALINA_HOME: "%CATALINA_HOME%" 180 echo Using CATALINA_TMPDIR: "%CATALINA_TMPDIR%" 181 if ""%1"" == ""debug"" goto use_jdk 182 echo Using JRE_HOME: "%JRE_HOME%" 183 goto java_dir_displayed 184 :use_jdk 185 echo Using JAVA_HOME: "%JAVA_HOME%" 186 :java_dir_displayed 187 echo Using CLASSPATH: "%CLASSPATH%" 188 189 set _EXECJAVA=%_RUNJAVA% 190 set MAINCLASS=org.apache.catalina.startup.Bootstrap 191 set ACTION=start 192 set SECURITY_POLICY_FILE= 193 set DEBUG_OPTS= 194 set JPDA= 195 196 if not ""%1"" == ""jpda"" goto noJpda 197 set JPDA=jpda 198 if not "%JPDA_TRANSPORT%" == "" goto gotJpdaTransport 199 set JPDA_TRANSPORT=dt_socket 200 :gotJpdaTransport 201 if not "%JPDA_ADDRESS%" == "" goto gotJpdaAddress 202 set JPDA_ADDRESS=8000 203 :gotJpdaAddress 204 if not "%JPDA_SUSPEND%" == "" goto gotJpdaSuspend 205 set JPDA_SUSPEND=n 206 :gotJpdaSuspend 207 if not "%JPDA_OPTS%" == "" goto gotJpdaOpts 208 set JPDA_OPTS=-agentlib:jdwp=transport=%JPDA_TRANSPORT%,address=%JPDA_ADDRESS%,server=y,suspend=%JPDA_SUSPEND% 209 :gotJpdaOpts 210 shift 211 :noJpda 212 213 if ""%1"" == ""debug"" goto doDebug 214 if ""%1"" == ""run"" goto doRun 215 if ""%1"" == ""start"" goto doStart 216 if ""%1"" == ""stop"" goto doStop 217 if ""%1"" == ""version"" goto doVersion 218 219 echo Usage: catalina ( commands ... ) 220 echo commands: 221 echo debug Start Catalina in a debugger 222 echo debug -security Debug Catalina with a security manager 223 echo jpda start Start Catalina under JPDA debugger 224 echo run Start Catalina in the current window 225 echo run -security Start in the current window with security manager 226 echo start Start Catalina in a separate window 227 echo start -security Start in a separate window with security manager 228 echo stop Stop Catalina 229 echo version What version of tomcat are you running? 230 goto end 231 232 :doDebug 233 shift 234 set _EXECJAVA=%_RUNJDB% 235 set DEBUG_OPTS=-sourcepath "%CATALINA_HOME%\..\..\java" 236 if not ""%1"" == ""-security"" goto execCmd 237 shift 238 echo Using Security Manager 239 set "SECURITY_POLICY_FILE=%CATALINA_BASE%\conf\catalina.policy" 240 goto execCmd 241 242 :doRun 243 shift 244 if not ""%1"" == ""-security"" goto execCmd 245 shift 246 echo Using Security Manager 247 set "SECURITY_POLICY_FILE=%CATALINA_BASE%\conf\catalina.policy" 248 goto execCmd 249 250 :doStart 251 shift 252 if not "%OS%" == "Windows_NT" goto noTitle 253 if "%TITLE%" == "" set TITLE=Tomcat 254 set _EXECJAVA=start "%TITLE%" %_RUNJAVA% 255 goto gotTitle 256 :noTitle 257 set _EXECJAVA=start %_RUNJAVA% 258 :gotTitle 259 if not ""%1"" == ""-security"" goto execCmd 260 shift 261 echo Using Security Manager 262 set "SECURITY_POLICY_FILE=%CATALINA_BASE%\conf\catalina.policy" 263 goto execCmd 264 265 :doStop 266 shift 267 set ACTION=stop 268 set CATALINA_OPTS= 269 goto execCmd 270 271 :doVersion 272 %_EXECJAVA% -classpath "%CATALINA_HOME%\lib\catalina.jar" org.apache.catalina.util.ServerInfo 273 goto end 274 275 276 :execCmd 277 rem Get remaining unshifted command line arguments and save them in the 278 set CMD_LINE_ARGS= 279 :setArgs 280 if ""%1""=="""" goto doneSetArgs 281 set CMD_LINE_ARGS=%CMD_LINE_ARGS% %1 282 shift 283 goto setArgs 284 :doneSetArgs 285 286 rem Execute Java with the applicable properties 287 if not "%JPDA%" == "" goto doJpda 288 if not "%SECURITY_POLICY_FILE%" == "" goto doSecurity 289 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% 290 goto end 291 :doSecurity 292 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Djava.security.manager -Djava.security.policy=="%SECURITY_POLICY_FILE%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% 293 goto end 294 :doJpda 295 if not "%SECURITY_POLICY_FILE%" == "" goto doSecurityJpda 296 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %JPDA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% 297 goto end 298 :doSecurityJpda 299 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %JPDA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Djava.security.manager -Djava.security.policy=="%SECURITY_POLICY_FILE%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% 300 goto end 301 302 :end
在第1行，和第17行中的內容已經在前一章中作出說明，在此處再也不敖述，我對於18-85行的這段註釋比較感興趣：web
1 rem --------------------------------------------------------------------------- 2 rem Start/Stop Script for the CATALINA Server 3 rem 4 rem Environment Variable Prerequisites 5 rem 6 rem CATALINA_HOME May point at your Catalina "build" directory. 7 rem 8 rem CATALINA_BASE (Optional) Base directory for resolving dynamic portions 9 rem of a Catalina installation. If not present, resolves to 10 rem the same directory that CATALINA_HOME points to. 11 rem 12 rem CATALINA_OPTS (Optional) Java runtime options used when the "start", 13 rem or "run" command is executed. 14 rem 15 rem CATALINA_TMPDIR (Optional) Directory path location of temporary directory 16 rem the JVM should use (java.io.tmpdir). Defaults to 17 rem %CATALINA_BASE%\temp. 18 rem 19 rem JAVA_HOME Must point at your Java Development Kit installation. 20 rem Required to run the with the "debug" argument. 21 rem 22 rem JRE_HOME Must point at your Java Runtime installation. 23 rem Defaults to JAVA_HOME if empty. 24 rem 25 rem JAVA_OPTS (Optional) Java runtime options used when the "start", 26 rem "stop", or "run" command is executed. 27 rem 28 rem JAVA_ENDORSED_DIRS (Optional) Lists of of semi-colon separated directories 29 rem containing some jars in order to allow replacement of APIs 30 rem created outside of the JCP (i.e. DOM and SAX from W3C). 31 rem It can also be used to update the XML parser implementation. 32 rem Defaults to $CATALINA_HOME/endorsed. 33 rem 34 rem JPDA_TRANSPORT (Optional) JPDA transport used when the "jpda start" 35 rem command is executed. The default is "dt_socket". 36 rem 37 rem JPDA_ADDRESS (Optional) Java runtime options used when the "jpda start" 38 rem command is executed. The default is 8000. 39 rem 40 rem JPDA_SUSPEND (Optional) Java runtime options used when the "jpda start" 41 rem command is executed. Specifies whether JVM should suspend 42 rem execution immediately after startup. Default is "n". 43 rem 44 rem JPDA_OPTS (Optional) Java runtime options used when the "jpda start" 45 rem command is executed. If used, JPDA_TRANSPORT, JPDA_ADDRESS, 46 rem and JPDA_SUSPEND are ignored. Thus, all required jpda 47 rem options MUST be specified. The default is: 48 rem 49 rem -agentlib:jdwp=transport=%JPDA_TRANSPORT%, 50 rem address=%JPDA_ADDRESS%,server=y,suspend=%JPDA_SUSPEND% 51 rem 52 rem LOGGING_CONFIG (Optional) Override Tomcat's logging config file 53 rem Example (all one line) 54 rem set LOGGING_CONFIG="-Djava.util.logging.config.file=%CATALINA_BASE%\conf\logging.properties" 55 rem 56 rem LOGGING_MANAGER (Optional) Override Tomcat's logging manager 57 rem Example (all one line) 58 rem set LOGGING_MANAGER="-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager" 59 rem 60 rem TITLE (Optional) Specify the title of Tomcat window. The default 61 rem TITLE is Tomcat if it's not specified. 62 rem Example (all one line) 63 rem set TITLE=Tomcat.Cluster#1.Server#1 [%DATE% %TIME%] 64 rem 65 rem 66 rem 67 rem $Id: catalina.bat 1040546 2010-11-30 14:47:34Z markt $ 68 rem ---------------------------------------------------------------------------
這段的內容就是說明一下在啓動和中止CATALINA server時候須要的一下先決條件，CATALINA_HOME--看到這個你們可能會有點疑問，若是在操做系統上沒有設置CATALINA_HOME變量的時候，那麼這個變量應該是不存在的丫，是怎麼回事呢？是否是？下面咱們仍是用測試來講明問題：我在F:\apache-tomcat-7.0.8\bin目錄下建立一個test.bat文件，文件內容以下： sql
@echo off set CURRENT_DIR=%cd% test2.bat
意思很簡單，只是將%cd%變量的值賦給CURRENT_DIR變量，而後調用test2.bat文件，test2.bat文件的內容以下：express
echo %CURRENT_DIR%
只是簡單的輸出%CURRENT_DIR%變量，讓咱們先運行test.bat文件，查看%CURRENT_DIR%變量是否可以正確輸出：apache
結果正確顯示了，可是若是咱們直接運行test2.bat文件會有什麼結果呢？bootstrap
結果顯示不正常，這個測試就說明由test.bat調用test2.bat文件時候，test.bat中定義的變量在test2.bat中可見，就是CURRENT_DIR變量的生命週期範圍並非僅限於本文件，也能加深對於setlocal方法的理解。回到catalina.bat自己，也許咱們自己沒有設置CATALINA_HOME環境變量的習慣，可是回想一下上一節，在startup.bat中說到，若是沒有設置CATALINA_HOME變量，startup.bat內會給CATALINA_HOME變量賦值，而後在catalina.bat中依然可以訪問此變量。tomcat
這段註釋說完以後，看一下88行： 安全
if not ""%1"" == ""run"" goto mainEntry
若是接收到的第一個參數是run那麼到:mainEntry節點，事實是咱們從startup.bat調用的時候傳遞的第一個參數無疑是start，因此應該順序執行到第89行，這裏可能有人會有疑問，那何時第一個參數纔是run呢？事情是這樣的，由於並非全部人都是跟咱們同樣直接使用startup.bat文件啓動，由於startup.bat文件也只不過就是找到catalina.bat文件，而後照樣傳遞參數，其實有經驗的人大可直接使用catalina.bat文件來啓動tomcat。這就是第一個參數爲run的產生狀況。接下來咱們順序執行到第89行。cookie
看一下89行的內容：
if ""%TEMP%"" == """" goto mainEntry
若是TEMP變量爲空，那麼到mainEntry節點，這個時候咱們就須要看看咱們到底有沒有這個TEMP變量，一樣弄個小測試，寫一個小的測試test.bat文件，文件內容以下：
@echo off echo %TEMP%
查看執行結果：
記得在上一節中說過%TEMP%這個變量是從環境變量中讀取的，因此也能夠去環境變量中查看是否是有此值，來肯定TEMP變量是否是存在，一問在startup.bat和catalina.bat並無設置TEMP變量。查看環境變量：
由於TEMP存在，因此程序還須要順序執行到90行，第90行的內容以下：
if exist "%TEMP%\%~nx0.run" goto mainEntry
這句話至少看起來有點蒙圈，尤爲是\%~nx0.run這個東西，反正我第一次看見的時候我就想問問，這是毛啊，~nx0,下面看一下網上對於%~nx0的解釋：
%~nx0 contains the name of the running batch file (without the path)
意思就是表明執行命令的文件的名字，咱們來用實驗證實一下，一樣仍是修改那個test.bat文件吧。;-)
@echo off echo "%TEMP%\%~nx0.run"
若是按照上面的解釋，那麼輸出的信息應該是C:\Users\Think\AppData\Local\Temp\test.bat.run，下面看一下運行結果：
咦事實證實說法正確，可是這個文件是否是存在呢，咱們去TEMP目錄下看一下,遺憾的是在C:\Users\Think\AppData\Local\Temp目錄沒有找到這個文件，因此還得順序執行到第91行，91行的內容是：
echo Y>"%TEMP%\%~nx0.run"
這個看起來很簡單，既然不存在這個文件，那麼我就本身建立一個，同時寫入Y。也許你不信，因此我仍是拿出個例子吧，仍是test.bat呦：
@echo off echo Y>"%TEMP%\%~nx0.run"
在C:\Users\Think\AppData\Local\Temp目錄下生成了test.bat.run文件，文件的內容果真爲Y。至於生成的文件有何意義，之後再說。到如今位置我忽然感慨，我很喜歡TOMCAT，它作了什麼我都能知道，在接下來的一段時間內，我想把我看TOMCAT源代碼的感覺也下下來。也跟你們討論一下TOMCAT的工做原理。有點遠，扯回來，下面看一下92行的內容：
if not exist "%TEMP%\%~nx0.run" goto mainEntry
這個一眼就看明白了，再次判斷%~nx0.run文件是否存在，若是仍是不存在，那麼直接到mainEntry節點，因爲咱們此時此文件已經建立成功，那麼順序執行到第93行。
93行的內容爲：
echo Y>"%TEMP%\%~nx0.Y"
這個同91行命令，再也不強調。順序執行到92行。
92行的內容爲：
call "%~f0" %* <"%TEMP%\%~nx0.Y"
看到以後感受依然是蒙圈，這裏面有兩個點須要你們掌握：%~f0, %* 知道這兩組符號是什麼意思，就解決了。
%~f0:表示運行的文件的全路徑，假如我在test.bat中如此寫：
@echo off @echo %%~f0 is %~f0
那麼執行結果爲：
OK。
%*：在batch file中，每個命令的參數都以%1，%2，%3 .....的形式展示，咱們也可使用%來代替全部的參數，下面看修改萬能測試文件test.bat中的內容以下：
@echo off echo First argument: [%1] echo Second argument: [%2] echo Third argument: [%3] echo Fourth argument: [%4] echo Fifth argument: [%4] echo Entire command line: [%*]
查看運行結果：
意思就是將在catalina.bat文件中本身調用本身，傳遞參數Y，下面看一下測試，將test.bat中的內容改成：
@echo off call "%~f0" %* <"%TEMP%\%~nx0.Y"
查看運行結果，在程序運行了一段時間之後，得出以下結論：
很奇怪，奇怪亮點，爲何運行的時候會有停頓，第二，爲何會產生這個結果。下面解決這兩個困惑，我以爲程序在運行的時候確定是在後臺運行什麼操做了，因此我將test.bat中的內容改了一下：
call "%~f0" %* <"%TEMP%\%~nx0.Y"
而後再次運行，獲得結果：
原來程序在輸出最終結果以前一直到在調用本身，因此會有一個停頓的感受。
第二：爲何會產生這個結果：
下面看第96行的內容：
set RETVAL=%ERRORLEVEL%
在前面的的內容中可能給你們一種誤解，因此在看到這句話的時候，不知道是否是也有人跟我似的直接去環境變量中找ERRORLEVEL的值，找不到以後以爲我在忽悠你們，下面我跟你們說說這個ERRORLEVEL。不知道你們是否是瞭解在Linux中的$?這個結果返回值，其實ERRORLEVEL和$?差很少，都是用來表示上次執行結果的，若是返回0說明執行正確，若是不是0說明執行失敗。例如在test.bat中的內容：
call %ERRORLEVEL%
執行結果：
下面看97行的內容：
del /Q "%TEMP%\%~nx0.Y" >NUL 2>&1
這裏面有/Q， >NUL， 2>&1須要跟你們解釋一下：
/Q: 跟在del後面表示不須要交互式的刪除。安靜模式的意思。如在test.bat中的內容以下：
del /Q "%TEMP%\%~nx0.Y" >NUL 2>&1
而後運行結果爲：
此時文件系統中的文件確實已經被刪除，只是在刪除的過程當中沒有顯示刪除的過程，下面咱們從新建立此文件，而後把/Q標記去掉之後在嘗試一次：
>NUL 就是將輸出輸出到NUL中，這樣有錯誤的狀況下你什麼都拿不到。
2>&1:2是值錯誤輸出，&1是標準輸出，意思就是將錯誤輸出重定向到標準輸出中
>NUL 2>&1的意思就是將錯誤輸出重定向到標準輸出，最後在重定向到NUL中，這樣出現錯誤，你從表面上不會看出來。若是將test.bat中的刪除操做執行屢次，
@echo off del /Q "%TEMP%\%~nx0.Y" >NUL 2>&1
看結果：
也不會顯示異常，若是將>NUL 2>&1刪除之後，再次執行：
@echo off del /Q "%TEMP%\%~nx0.Y"
結果就會顯示出異常：
下面看第98行的內容：
exit /B %RETVAL%
下面的mainEntry和gotHome節點的信息同前一節剛開始的內容同樣，全部就再也不說明，若是對此有什麼疑問，請查看查看tomcat啓動文件都乾點啥一節。在接下來的部分中我想把115-137行的內容放在一塊兒說明，由於他們分爲兩部分，分別引入setenv.bat和setclasspath.bat並執行，
:okHome rem Ensure that any user defined CLASSPATH variables are not used on startup, rem but allow them to be specified in setenv.bat, in rare case when it is needed. set CLASSPATH= rem Get standard environment variables if "%CATALINA_BASE%" == "" goto gotSetenvHome if exist "%CATALINA_BASE%\bin\setenv.bat" call "%CATALINA_BASE%\bin\setenv.bat" goto gotSetenvBase :gotSetenvHome if exist "%CATALINA_HOME%\bin\setenv.bat" call "%CATALINA_HOME%\bin\setenv.bat" :gotSetenvBase rem Get standard Java environment variables if exist "%CATALINA_HOME%\bin\setclasspath.bat" goto okSetclasspath echo Cannot find "%CATALINA_HOME%\bin\setclasspath.bat" echo This file is needed to run this program goto end :okSetclasspath set "BASEDIR=%CATALINA_HOME%" call "%CATALINA_HOME%\bin\setclasspath.bat" %1 if errorlevel 1 goto end
這部分的操做就是設置環境變量，因爲在tomcat7.0.8版本中不存在setenv.bat因此就不說了，setclasspath.bat這個腳本很重要，瀏覽一下其中的內容：
@echo off rem Licensed to the Apache Software Foundation (ASF) under one or more rem contributor license agreements. See the NOTICE file distributed with rem this work for additional information regarding copyright ownership. rem The ASF licenses this file to You under the Apache License, Version 2.0 rem (the "License"); you may not use this file except in compliance with rem the License. You may obtain a copy of the License at rem rem http://www.apache.org/licenses/LICENSE-2.0 rem rem Unless required by applicable law or agreed to in writing, software rem distributed under the License is distributed on an "AS IS" BASIS, rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. rem See the License for the specific language governing permissions and rem limitations under the License. rem --------------------------------------------------------------------------- rem Set JAVA_HOME or JRE_HOME if not already set, ensure any provided settings rem are valid and consistent with the selected start-up options and set up the rem endorsed directory. rem rem $Id: setclasspath.bat 964208 2010-07-14 21:24:45Z markt $ rem --------------------------------------------------------------------------- rem Make sure prerequisite environment variables are set if not "%JAVA_HOME%" == "" goto gotJdkHome if not "%JRE_HOME%" == "" goto gotJreHome echo Neither the JAVA_HOME nor the JRE_HOME environment variable is defined echo At least one of these environment variable is needed to run this program goto exit :gotJreHome if not exist "%JRE_HOME%\bin\java.exe" goto noJavaHome if not exist "%JRE_HOME%\bin\javaw.exe" goto noJavaHome if not ""%1"" == ""debug"" goto okJavaHome echo JAVA_HOME should point to a JDK in order to run in debug mode. goto exit :gotJdkHome if not exist "%JAVA_HOME%\bin\java.exe" goto noJavaHome if not exist "%JAVA_HOME%\bin\javaw.exe" goto noJavaHome if not exist "%JAVA_HOME%\bin\jdb.exe" goto noJavaHome if not exist "%JAVA_HOME%\bin\javac.exe" goto noJavaHome if not "%JRE_HOME%" == "" goto okJavaHome set "JRE_HOME=%JAVA_HOME%" goto okJavaHome :noJavaHome echo The JAVA_HOME environment variable is not defined correctly echo This environment variable is needed to run this program echo NB: JAVA_HOME should point to a JDK not a JRE goto exit :okJavaHome if not "%BASEDIR%" == "" goto gotBasedir echo The BASEDIR environment variable is not defined echo This environment variable is needed to run this program goto exit :gotBasedir if exist "%BASEDIR%\bin\setclasspath.bat" goto okBasedir echo The BASEDIR environment variable is not defined correctly echo This environment variable is needed to run this program goto exit :okBasedir rem Don't override the endorsed dir if the user has set it previously if not "%JAVA_ENDORSED_DIRS%" == "" goto gotEndorseddir rem Set the default -Djava.endorsed.dirs argument set "JAVA_ENDORSED_DIRS=%BASEDIR%\endorsed" :gotEndorseddir rem Set standard command for invoking Java. rem Note that NT requires a window name argument when using start. rem Also note the quoting as JAVA_HOME may contain spaces. set _RUNJAVA="%JRE_HOME%\bin\java" set _RUNJDB="%JAVA_HOME%\bin\jdb" goto end :exit exit /b 1 :end exit /b 0
其中就是關於JAVA環境的一些校驗和變量的設置，重要性不言而喻，因此若是執行本步操做失敗的狀況下，程序將退出執行。
接下來是設置CLASSPATH的內容，看過前面的說明之後，對於下面的內容應該很容易就能看懂：
rem Add on extra jar file to CLASSPATH rem Note that there are no quotes as we do not want to introduce random rem quotes into the CLASSPATH if "%CLASSPATH%" == "" goto emptyClasspath set "CLASSPATH=%CLASSPATH%;" :emptyClasspath set "CLASSPATH=%CLASSPATH%%CATALINA_HOME%\bin\bootstrap.jar" if not "%CATALINA_BASE%" == "" goto gotBase set "CATALINA_BASE=%CATALINA_HOME%" :gotBase if not "%CATALINA_TMPDIR%" == "" goto gotTmpdir set "CATALINA_TMPDIR=%CATALINA_BASE%\temp" :gotTmpdir rem Add tomcat-juli.jar to classpath rem tomcat-juli.jar can be over-ridden per instance if not exist "%CATALINA_BASE%\bin\tomcat-juli.jar" goto juliClasspathHome set "CLASSPATH=%CLASSPATH%;%CATALINA_BASE%\bin\tomcat-juli.jar" goto juliClasspathDone :juliClasspathHome set "CLASSPATH=%CLASSPATH%;%CATALINA_HOME%\bin\tomcat-juli.jar" :juliClasspathDone
將tomcat-juli.jar和bootstrap.jar的全路徑追加到CLASSPATH中，究竟這兩個jar包是作什麼的，不是本文的範疇，只說明這兩個jar包須要在CLASSPATH中體現。
接下來是關於Log選項的問題：
if not "%LOGGING_CONFIG%" == "" goto noJuliConfig set LOGGING_CONFIG=-Dnop if not exist "%CATALINA_BASE%\conf\logging.properties" goto noJuliConfig set LOGGING_CONFIG=-Djava.util.logging.config.file="%CATALINA_BASE%\conf\logging.properties" :noJuliConfig set JAVA_OPTS=%JAVA_OPTS% %LOGGING_CONFIG% if not "%LOGGING_MANAGER%" == "" goto noJuliManager set LOGGING_MANAGER=-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager :noJuliManager set JAVA_OPTS=%JAVA_OPTS% %LOGGING_MANAGER%
內容很簡單，一看就明白，因此也很少說了。
在前面準備了這麼久，接下來終於到執行的時候了。下面看一下這段腳本：
rem ----- Execute The Requested Command --------------------------------------- echo Using CATALINA_BASE: "%CATALINA_BASE%" echo Using CATALINA_HOME: "%CATALINA_HOME%" echo Using CATALINA_TMPDIR: "%CATALINA_TMPDIR%" if ""%1"" == ""debug"" goto use_jdk echo Using JRE_HOME: "%JRE_HOME%" goto java_dir_displayed :use_jdk echo Using JAVA_HOME: "%JAVA_HOME%" :java_dir_displayed echo Using CLASSPATH: "%CLASSPATH%" set _EXECJAVA=%_RUNJAVA% set MAINCLASS=org.apache.catalina.startup.Bootstrap set ACTION=start set SECURITY_POLICY_FILE= set DEBUG_OPTS= set JPDA= if not ""%1"" == ""jpda"" goto noJpda set JPDA=jpda if not "%JPDA_TRANSPORT%" == "" goto gotJpdaTransport set JPDA_TRANSPORT=dt_socket :gotJpdaTransport if not "%JPDA_ADDRESS%" == "" goto gotJpdaAddress set JPDA_ADDRESS=8000 :gotJpdaAddress if not "%JPDA_SUSPEND%" == "" goto gotJpdaSuspend set JPDA_SUSPEND=n :gotJpdaSuspend if not "%JPDA_OPTS%" == "" goto gotJpdaOpts set JPDA_OPTS=-agentlib:jdwp=transport=%JPDA_TRANSPORT%,address=%JPDA_ADDRESS%,server=y,suspend=%JPDA_SUSPEND% :gotJpdaOpts shift :noJpda if ""%1"" == ""debug"" goto doDebug if ""%1"" == ""run"" goto doRun if ""%1"" == ""start"" goto doStart if ""%1"" == ""stop"" goto doStop if ""%1"" == ""version"" goto doVersion echo Usage: catalina ( commands ... ) echo commands: echo debug Start Catalina in a debugger echo debug -security Debug Catalina with a security manager echo jpda start Start Catalina under JPDA debugger echo run Start Catalina in the current window echo run -security Start in the current window with security manager echo start Start Catalina in a separate window echo start -security Start in a separate window with security manager echo stop Stop Catalina echo version What version of tomcat are you running? goto end :doDebug shift set _EXECJAVA=%_RUNJDB% set DEBUG_OPTS=-sourcepath "%CATALINA_HOME%\..\..\java" if not ""%1"" == ""-security"" goto execCmd shift echo Using Security Manager set "SECURITY_POLICY_FILE=%CATALINA_BASE%\conf\catalina.policy" goto execCmd :doRun shift if not ""%1"" == ""-security"" goto execCmd shift echo Using Security Manager set "SECURITY_POLICY_FILE=%CATALINA_BASE%\conf\catalina.policy" goto execCmd :doStart shift if not "%OS%" == "Windows_NT" goto noTitle if "%TITLE%" == "" set TITLE=Tomcat set _EXECJAVA=start "%TITLE%" %_RUNJAVA% goto gotTitle :noTitle set _EXECJAVA=start %_RUNJAVA% :gotTitle if not ""%1"" == ""-security"" goto execCmd shift echo Using Security Manager set "SECURITY_POLICY_FILE=%CATALINA_BASE%\conf\catalina.policy" goto execCmd :doStop shift set ACTION=stop set CATALINA_OPTS= goto execCmd :doVersion %_EXECJAVA% -classpath "%CATALINA_HOME%\lib\catalina.jar" org.apache.catalina.util.ServerInfo goto end :execCmd rem Get remaining unshifted command line arguments and save them in the set CMD_LINE_ARGS= :setArgs if ""%1""=="""" goto doneSetArgs set CMD_LINE_ARGS=%CMD_LINE_ARGS% %1 shift goto setArgs :doneSetArgs rem Execute Java with the applicable properties if not "%JPDA%" == "" goto doJpda if not "%SECURITY_POLICY_FILE%" == "" goto doSecurity %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% goto end :doSecurity %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Djava.security.manager -Djava.security.policy=="%SECURITY_POLICY_FILE%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% goto end :doJpda if not "%SECURITY_POLICY_FILE%" == "" goto doSecurityJpda %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %JPDA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% goto end :doSecurityJpda %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %JPDA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Djava.security.manager -Djava.security.policy=="%SECURITY_POLICY_FILE%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% goto end :end
前三行的內容是將當前設置的變量進行輸出，
echo Using CATALINA_BASE: "%CATALINA_BASE%" echo Using CATALINA_HOME: "%CATALINA_HOME%" echo Using CATALINA_TMPDIR: "%CATALINA_TMPDIR%"
CATALINA_BASE，CATALINA_HOME，CATALINA_TMPDIR這三個變量在startup.bat或者catalina.bat中已經提早設置了，射出只是爲了提示用戶當前的運行環境，接下來看181-187行的內容：
if ""%1"" == ""debug"" goto use_jdk echo Using JRE_HOME: "%JRE_HOME%" goto java_dir_displayed :use_jdk echo Using JAVA_HOME: "%JAVA_HOME%" :java_dir_displayed echo Using CLASSPATH: "%CLASSPATH%"
在解釋這段內容以前，我建議你們要對setclasspath.bat中的內容有所瞭解，由於setclasspath.bat中包含對與JRE_HOME,JAVA_HOME變量的邏輯處理和定義。這段內容的意思就是說若是catalina.bat接收到的第一個參數是debug,那麼就到use_jdk節點，因爲通常狀況下咱們是用startup.bat腳本調用catalina.bat腳本，因此第一個參數應該是start,因此應該順序執行到182行echo Using JRE_HOME: "%JRE_HOME%"，而後執行到java_dir_displayed節點，至於爲何debug的時候不使用JRE_HOME這個變量，咱們先記下，在之後的章節中在討論。
在189-194行中是設置一些變量，內容以下：
set _EXECJAVA=%_RUNJAVA% set MAINCLASS=org.apache.catalina.startup.Bootstrap set ACTION=start set SECURITY_POLICY_FILE= set DEBUG_OPTS= set JPDA=
這裏面要說兩點，%_RUNJAVA%變量和org.apache.catalina.startup.Bootstrap，其中%_RUNJAVA%是在setclasspath.bat文件中定義的，其值爲"%JRE_HOME%\bin\java"，
MAINCLASS寫過JAVA程序的人應該都知道是作什麼用的，關鍵是org.apache.catalina.startup.Bootstrap這個值是怎麼來的，在哪裏定義的，記得在catalina.bat中有過這麼一個設置：CLASSPATH=%CLASSPATH%%CATALINA_HOME%\bin\bootstrap.jar，其中org.apache.catalina.startup.Bootstrap就是該jar包中的一個類。具體內容以及意義再也不此展開。
第196行-211行是對jpda（）的處理，由於我們沒有涉及，關於jdpa的內容不在此展開，由於咱們不涉及因此跳過此步驟：
if not ""%1"" == ""jpda"" goto noJpda set JPDA=jpda if not "%JPDA_TRANSPORT%" == "" goto gotJpdaTransport set JPDA_TRANSPORT=dt_socket :gotJpdaTransport if not "%JPDA_ADDRESS%" == "" goto gotJpdaAddress set JPDA_ADDRESS=8000 :gotJpdaAddress if not "%JPDA_SUSPEND%" == "" goto gotJpdaSuspend set JPDA_SUSPEND=n :gotJpdaSuspend if not "%JPDA_OPTS%" == "" goto gotJpdaOpts set JPDA_OPTS=-agentlib:jdwp=transport=%JPDA_TRANSPORT%,address=%JPDA_ADDRESS%,server=y,suspend=%JPDA_SUSPEND% :gotJpdaOpts shift :noJpda
再次記下一個知識點JDPA。
下面到noJpda節點，內容以下：
if ""%1"" == ""debug"" goto doDebug if ""%1"" == ""run"" goto doRun if ""%1"" == ""start"" goto doStart if ""%1"" == ""stop"" goto doStop if ""%1"" == ""version"" goto doVersion echo Usage: catalina ( commands ... ) echo commands: echo debug Start Catalina in a debugger echo debug -security Debug Catalina with a security manager echo jpda start Start Catalina under JPDA debugger echo run Start Catalina in the current window echo run -security Start in the current window with security manager echo start Start Catalina in a separate window echo start -security Start in a separate window with security manager echo stop Stop Catalina echo version What version of tomcat are you running? goto end
其中
if ""%1"" == ""debug"" goto doDebug if ""%1"" == ""run"" goto doRun if ""%1"" == ""start"" goto doStart if ""%1"" == ""stop"" goto doStop if ""%1"" == ""version"" goto doVersion
是根據用戶輸入的具體命令，跳轉到具體的處理節點，例如輸入的命令，那麼就到doStart節點，219行-230行的內容是，若是你輸入的第一個參數再也不預設的命令當中，給你的提示：
echo Usage: catalina ( commands ... ) echo commands: echo debug Start Catalina in a debugger echo debug -security Debug Catalina with a security manager echo jpda start Start Catalina under JPDA debugger echo run Start Catalina in the current window echo run -security Start in the current window with security manager echo start Start Catalina in a separate window echo start -security Start in a separate window with security manager echo stop Stop Catalina echo version What version of tomcat are you running? goto end
下面先看232行-240行的doDebug節點的內容：
:doDebug shift set _EXECJAVA=%_RUNJDB% set DEBUG_OPTS=-sourcepath "%CATALINA_HOME%\..\..\java" if not ""%1"" == ""-security"" goto execCmd shift echo Using Security Manager set "SECURITY_POLICY_FILE=%CATALINA_BASE%\conf\catalina.policy" goto execCmd
一樣%_RUNJDB%變量去setclasspath.bat文件中找定義，235行的內容配置DEBUG_OPTS，接下來是安全策略的問題，若是指定參數"-security"，那麼就須要加載安全策略文件，安全策略文件爲%CATALINA_BASE%\conf\catalina.policy，內容以下：
// Licensed to the Apache Software Foundation (ASF) under one or more // contributor license agreements. See the NOTICE file distributed with // this work for additional information regarding copyright ownership. // The ASF licenses this file to You under the Apache License, Version 2.0 // (the "License"); you may not use this file except in compliance with // the License. You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. // ============================================================================ // catalina.policy - Security Policy Permissions for Tomcat 7 // // This file contains a default set of security policies to be enforced (by the // JVM) when Catalina is executed with the "-security" option. In addition // to the permissions granted here, the following additional permissions are // granted specific to each web application: // // * Read access to its document root directory // * Read, write and delete access to its working directory // // $Id: catalina.policy 981453 2010-08-02 11:00:51Z markt $ // ============================================================================ // ========== SYSTEM CODE PERMISSIONS ========================================= // These permissions apply to javac grant codeBase "file:${java.home}/lib/-" { permission java.security.AllPermission; }; // These permissions apply to all shared system extensions grant codeBase "file:${java.home}/jre/lib/ext/-" { permission java.security.AllPermission; }; // These permissions apply to javac when ${java.home] points at $JAVA_HOME/jre grant codeBase "file:${java.home}/../lib/-" { permission java.security.AllPermission; }; // These permissions apply to all shared system extensions when // ${java.home} points at $JAVA_HOME/jre grant codeBase "file:${java.home}/lib/ext/-" { permission java.security.AllPermission; }; // ========== CATALINA CODE PERMISSIONS ======================================= // These permissions apply to the daemon code grant codeBase "file:${catalina.home}/bin/commons-daemon.jar" { permission java.security.AllPermission; }; // These permissions apply to the logging API // Note: If tomcat-juli.jar is in ${catalina.base} and not in ${catalina.home}, // update this section accordingly. // grant codeBase "file:${catalina.base}/bin/tomcat-juli.jar" {..} grant codeBase "file:${catalina.home}/bin/tomcat-juli.jar" { permission java.io.FilePermission "${java.home}${file.separator}lib${file.separator}logging.properties", "read"; permission java.io.FilePermission "${catalina.base}${file.separator}conf${file.separator}logging.properties", "read"; permission java.io.FilePermission "${catalina.base}${file.separator}logs", "read, write"; permission java.io.FilePermission "${catalina.base}${file.separator}logs${file.separator}*", "read, write"; permission java.lang.RuntimePermission "shutdownHooks"; permission java.lang.RuntimePermission "getClassLoader"; permission java.lang.RuntimePermission "setContextClassLoader"; permission java.util.logging.LoggingPermission "control"; permission java.util.PropertyPermission "java.util.logging.config.class", "read"; permission java.util.PropertyPermission "java.util.logging.config.file", "read"; permission java.util.PropertyPermission "catalina.base", "read"; // Note: To enable per context logging configuration, permit read access to // the appropriate file. Be sure that the logging configuration is // secure before enabling such access. // E.g. for the examples web application: // permission java.io.FilePermission "${catalina.base}${file.separator} // webapps${file.separator}examples${file.separator}WEB-INF // ${file.separator}classes${file.separator}logging.properties", "read"; }; // These permissions apply to the server startup code grant codeBase "file:${catalina.home}/bin/bootstrap.jar" { permission java.security.AllPermission; }; // These permissions apply to the servlet API classes // and those that are shared across all class loaders // located in the "lib" directory grant codeBase "file:${catalina.home}/lib/-" { permission java.security.AllPermission; }; // If using a per instance lib directory, i.e. ${catalina.base}/lib, // then the following permission will need to be uncommented // grant codeBase "file:${catalina.base}/lib/-" { // permission java.security.AllPermission; // }; // ========== WEB APPLICATION PERMISSIONS ===================================== // These permissions are granted by default to all web applications // In addition, a web application will be given a read FilePermission // and JndiPermission for all files and directories in its document root. grant { // Required for JNDI lookup of named JDBC DataSource's and // javamail named MimePart DataSource used to send mail permission java.util.PropertyPermission "java.home", "read"; permission java.util.PropertyPermission "java.naming.*", "read"; permission java.util.PropertyPermission "javax.sql.*", "read"; // OS Specific properties to allow read access permission java.util.PropertyPermission "os.name", "read"; permission java.util.PropertyPermission "os.version", "read"; permission java.util.PropertyPermission "os.arch", "read"; permission java.util.PropertyPermission "file.separator", "read"; permission java.util.PropertyPermission "path.separator", "read"; permission java.util.PropertyPermission "line.separator", "read"; // JVM properties to allow read access permission java.util.PropertyPermission "java.version", "read"; permission java.util.PropertyPermission "java.vendor", "read"; permission java.util.PropertyPermission "java.vendor.url", "read"; permission java.util.PropertyPermission "java.class.version", "read"; permission java.util.PropertyPermission "java.specification.version", "read"; permission java.util.PropertyPermission "java.specification.vendor", "read"; permission java.util.PropertyPermission "java.specification.name", "read"; permission java.util.PropertyPermission "java.vm.specification.version", "read"; permission java.util.PropertyPermission "java.vm.specification.vendor", "read"; permission java.util.PropertyPermission "java.vm.specification.name", "read"; permission java.util.PropertyPermission "java.vm.version", "read"; permission java.util.PropertyPermission "java.vm.vendor", "read"; permission java.util.PropertyPermission "java.vm.name", "read"; // Required for OpenJMX permission java.lang.RuntimePermission "getAttribute"; // Allow read of JAXP compliant XML parser debug permission java.util.PropertyPermission "jaxp.debug", "read"; // All JSPs need to be able to read this package permission java.lang.RuntimePermission "accessClassInPackage.org.apache.tomcat"; // Precompiled JSPs need access to these packages. permission java.lang.RuntimePermission "accessClassInPackage.org.apache.jasper.el"; permission java.lang.RuntimePermission "accessClassInPackage.org.apache.jasper.runtime"; permission java.lang.RuntimePermission "accessClassInPackage.org.apache.jasper.runtime.*"; // Precompiled JSPs need access to these system properties. permission java.util.PropertyPermission "org.apache.jasper.runtime.BodyContentImpl.LIMIT_BUFFER", "read"; permission java.util.PropertyPermission "org.apache.el.parser.COERCE_TO_ZERO", "read"; // The cookie code needs these. permission java.util.PropertyPermission "org.apache.catalina.STRICT_SERVLET_COMPLIANCE", "read"; permission java.util.PropertyPermission "org.apache.tomcat.util.http.ServerCookie.STRICT_NAMING", "read"; permission java.util.PropertyPermission "org.apache.tomcat.util.http.ServerCookie.FWD_SLASH_IS_SEPARATOR", "read"; // Applications using Comet need to be able to access this package permission java.lang.RuntimePermission "accessClassInPackage.org.apache.catalina.comet"; }; // The Manager application needs access to the following packages to support the // session display functionality grant codeBase "file:${catalina.base}/webapps/manager/-" { permission java.lang.RuntimePermission "accessClassInPackage.org.apache.catalina"; permission java.lang.RuntimePermission "accessClassInPackage.org.apache.catalina.manager"; permission java.lang.RuntimePermission "accessClassInPackage.org.apache.catalina.manager.util"; }; // You can assign additional permissions to particular web applications by // adding additional "grant" entries here, based on the code base for that // application, /WEB-INF/classes/, or /WEB-INF/lib/ jar files. // // Different permissions can be granted to JSP pages, classes loaded from // the /WEB-INF/classes/ directory, all jar files in the /WEB-INF/lib/ // directory, or even to individual jar files in the /WEB-INF/lib/ directory. // // For instance, assume that the standard "examples" application // included a JDBC driver that needed to establish a network connection to the // corresponding database and used the scrape taglib to get the weather from // the NOAA web server. You might create a "grant" entries like this: // // The permissions granted to the context root directory apply to JSP pages. // grant codeBase "file:${catalina.base}/webapps/examples/-" { // permission java.net.SocketPermission "dbhost.mycompany.com:5432", "connect"; // permission java.net.SocketPermission "*.noaa.gov:80", "connect"; // }; // // The permissions granted to the context WEB-INF/classes directory // grant codeBase "file:${catalina.base}/webapps/examples/WEB-INF/classes/-" { // }; // // The permission granted to your JDBC driver // grant codeBase "jar:file:${catalina.base}/webapps/examples/WEB-INF/lib/driver.jar!/-" { // permission java.net.SocketPermission "dbhost.mycompany.com:5432", "connect"; // }; // The permission granted to the scrape taglib // grant codeBase "jar:file:${catalina.base}/webapps/examples/WEB-INF/lib/scrape.jar!/-" { // permission java.net.SocketPermission "*.noaa.gov:80", "connect"; // };
裏面涉及到一些權限的設置，有興趣你們能夠仔細研究。最終執行execCmd節點的腳本。
242行-248行doRun節點內容以下：
:doRun shift if not ""%1"" == ""-security"" goto execCmd shift echo Using Security Manager set "SECURITY_POLICY_FILE=%CATALINA_BASE%\conf\catalina.policy" goto execCmd
內容同doDebug內容類似，只是判斷是否是須要加載安全配置文件。
250行-263行的doStart節點：
:doStart shift if not "%OS%" == "Windows_NT" goto noTitle if "%TITLE%" == "" set TITLE=Tomcat set _EXECJAVA=start "%TITLE%" %_RUNJAVA% goto gotTitle :noTitle set _EXECJAVA=start %_RUNJAVA% :gotTitle if not ""%1"" == ""-security"" goto execCmd shift echo Using Security Manager set "SECURITY_POLICY_FILE=%CATALINA_BASE%\conf\catalina.policy" goto execCmd
主要內容就是，若是%OS%環境變量不是Windows_NT,那麼不設置標題，直接判斷是否須要加載安全配置文件，若是%OS%環境變量的值爲Windows_NT,那麼設置Title變量，若是沒有指定Title變量，默認值爲Tomcat,設置完_EXECJAVA變量之後，執行execCmd節點的腳本。
265行-269行的doStop節點，內容比較簡單，主要就是設置一下ACTION變量，內容以下：
:doStop shift set ACTION=stop set CATALINA_OPTS= goto execCmd
271行-273行的doVersion節點，就是調用了一下"%CATALINA_HOME%\lib\catalina.jar"中的org.apache.catalina.util.ServerInfo方法，內容以下：
:doVersion %_EXECJAVA% -classpath "%CATALINA_HOME%\lib\catalina.jar" org.apache.catalina.util.ServerInfo goto end
下面真正的重點來了，execCmd節點，其中有和startup.bat中處理參與同樣功能的節點setArgs,從279行-283行，循環讀出參數中的內容追加到CMD_LINE_ARGS變量中，內容以下：
set CMD_LINE_ARGS= :setArgs if ""%1""=="""" goto doneSetArgs set CMD_LINE_ARGS=%CMD_LINE_ARGS% %1 shift goto setArgs
286行-300行的內容就是真正的執行方法了，先看內容：
rem Execute Java with the applicable properties if not "%JPDA%" == "" goto doJpda if not "%SECURITY_POLICY_FILE%" == "" goto doSecurity %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% goto end :doSecurity %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Djava.security.manager -Djava.security.policy=="%SECURITY_POLICY_FILE%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% goto end :doJpda if not "%SECURITY_POLICY_FILE%" == "" goto doSecurityJpda %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %JPDA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% goto end :doSecurityJpda %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %JPDA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Djava.security.manager -Djava.security.policy=="%SECURITY_POLICY_FILE%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% goto end
是否是有點長，是否是有點看不懂，是否是以爲很麻煩，不要着急，我想一個辦法，更直觀的觀察這裏面到底是什麼東西：下面我在這些腳本上添點東西，弄成這個樣子：
rem Execute Java with the applicable properties if not "%JPDA%" == "" goto doJpda if not "%SECURITY_POLICY_FILE%" == "" goto doSecurity %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% echo 1 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% goto end :doSecurity %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Djava.security.manager -Djava.security.policy=="%SECURITY_POLICY_FILE%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% echo 2 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Djava.security.manager -Djava.security.policy=="%SECURITY_POLICY_FILE%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% goto end :doJpda if not "%SECURITY_POLICY_FILE%" == "" goto doSecurityJpda %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %JPDA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% echo 3 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %JPDA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% goto end :doSecurityJpda %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %JPDA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Djava.security.manager -Djava.security.policy=="%SECURITY_POLICY_FILE%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% echo 4 %_EXECJAVA% %JAVA_OPTS% %CATALINA_OPTS% %JPDA_OPTS% %DEBUG_OPTS% -Djava.endorsed.dirs="%JAVA_ENDORSED_DIRS%" -classpath "%CLASSPATH%" -Djava.security.manager -Djava.security.policy=="%SECURITY_POLICY_FILE%" -Dcatalina.base="%CATALINA_BASE%" -Dcatalina.home="%CATALINA_HOME%" -Djava.io.tmpdir="%CATALINA_TMPDIR%" %MAINCLASS% %CMD_LINE_ARGS% %ACTION% goto end :end pause
其實很簡單，就是把內容輸出，而後爲了能看清，我在後面加了個pause,嘿嘿，下面我從startup.bat啓動catalina.bat之後看輸出結果：
Using CATALINA_BASE: "F:\apache-tomcat-7.0.8" Using CATALINA_HOME: "F:\apache-tomcat-7.0.8" Using CATALINA_TMPDIR: "F:\apache-tomcat-7.0.8\temp" Using JRE_HOME: "E:\Program Files\Java\jdk1.7.0_40" Using CLASSPATH: "F:\apache-tomcat-7.0.8\bin\bootstrap.jar;F:\apache-tomca t-7.0.8\bin\tomcat-juli.jar" 1 start "Tomcat" "E:\Program Files\Java\jdk1.7.0_40\bin\java" -Djava.util.loggi ng.config.file="F:\apache-tomcat-7.0.8\conf\logging.properties" -Djava.util.logg ing.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs="F:\apa che-tomcat-7.0.8\endorsed" -classpath "F:\apache-tomcat-7.0.8\bin\bootstrap.jar; F:\apache-tomcat-7.0.8\bin\tomcat-juli.jar" -Dcatalina.base="F:\apache-tomcat-7. 0.8" -Dcatalina.home="F:\apache-tomcat-7.0.8" -Djava.io.tmpdir="F:\apache-tomcat -7.0.8\temp" org.apache.catalina.startup.Bootstrap start 請按任意鍵繼續. . .
分析一下結果得出以下結論：
_EXECJAVA=start "Tomcat" "E:\Program Files\Java\jdk1.7.0_40\bin\java" JAVA_OPTS= -Djava.util.logging.config.file="F:\apache-tomcat-7.0.8\conf\logging.properties" -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager CATALINA_OPTS= DEBUG_OPTS= -Djava.endorsed.dirs="F:\apache-tomcat-7.0.8\endorsed" -classpath "F:\apache-tomcat-7.0.8\bin\bootstrap.jar;F:\apache-tomcat-7.0.8\bin\tomcat-juli.jar" -Dcatalina.base="F:\apache-tomcat-7.0.8" -Dcatalina.home="F:\apache-tomcat-7.0.8" -Djava.io.tmpdir="F:\apache-tomcat-7.0.8\temp" MAINCLASS=org.apache.catalina.startup.Bootstrap CMD_LINE_ARGS= ACTION=start
至於其餘狀況，你們本身研究吧，但願能起到拋磚引玉的做用。在文中有三處疑問（標紅加粗字體），因爲和本文關心不太大，在之後說明，若是誰願意交流也能夠寫在評論中，昨天晚上寫了這些，腦殼都混亂了，好像若是有不正確的地方，歡迎你們指認。
相關文章
- 1. 查看tomcat啓動文件都乾點啥---catalina.bat（轉）
- 2. 查看tomcat啓動文件都乾點啥---Bootstrap.java
- 3. Tomcat啓動過程都幹了啥
- 4. tomcat啓動(一)startup.bat|catalina.bat分析
- 5. tomcat啓動時都幹了什麼
- 6. Tomcat中catalina.bat詳解
- 7. Tomcat 啓動時查看加載的類
- 8. linux 啓動 終止 tomcat,查看進程
- 9. linux查看tomcat啓動信息
- 10. windows tomcat開機啓動 以及 開機啓動的catalina.bat配置無效解決
- 更多相關文章...
- • 查看 XML 文件 - XML 教程
- • 啓動MySQL服務 - MySQL教程
- • SpringBoot中properties文件不能自動提示解決方法
- • IntelliJ IDEA中SpringBoot properties文件不能自動提示問題解決
相關標籤/搜索
每日一句
-
每一个你不满意的现在，都有一个你没有努力的曾经。
歡迎關注本站公眾號,獲取更多信息
相關文章