Intellij IDEA 14 做爲Java IDE 神器,接觸後發現,很是好用,對它愛不釋手,打算離開eclipse和myeclipse,投入Intellij IDEA的懷抱。html
然而在使用的過程當中會發現Intellij IDEA也有一些不盡如意的地方,不免會有些不爽:Intellij IDEA 的插件庫遠不及eclipse的豐富。 mybatis-generator在eclipse中有專門的插件,而沒有開發出Intellij IDEA可以使用的插件。java
不過不用灰心,若是你的項目是使用maven組織的,那麼咱們能夠在Intellij IDEA中使用 mybatis-generator-maven-plugin插件來完成MyBatis model 和Mapper文件的自動生成。sql
- <build>
- <finalName>xxx</finalName>
- <plugins>
- <plugin>
- <groupId>org.mybatis.generator</groupId>
- <artifactId>mybatis-generator-maven-plugin</artifactId>
- <version>1.3.2</version>
- <configuration>
- <verbose>true</verbose>
- <overwrite>true</overwrite>
- </configuration>
- </plugin>
- </plugins>
- </build>
- <?xml version="1.0" encoding="UTF-8"?>
- <!DOCTYPE generatorConfiguration
- PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
- "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
- <generatorConfiguration>
- <!--導入屬性配置 -->
- <properties resource="generator.properties"></properties>
- <!--指定特定數據庫的jdbc驅動jar包的位置 -->
- <classPathEntry location="${jdbc.driverLocation}"/>
- <context id="default" targetRuntime="MyBatis3">
- <!-- optional,旨在建立class時,對註釋進行控制 -->
- <commentGenerator>
- <property name="suppressDate" value="true" />
- </commentGenerator>
- <!--jdbc的數據庫鏈接 -->
- <jdbcConnection driverClass="${jdbc.driverClass}" connectionURL="${jdbc.connectionURL}" userId="${jdbc.userId}" password="${jdbc.password}">
- </jdbcConnection>
- <!-- 非必需,類型處理器,在數據庫類型和java類型之間的轉換控制-->
- <javaTypeResolver >
- <property name="forceBigDecimals" value="false" />
- </javaTypeResolver>
- <!-- Model模型生成器,用來生成含有主鍵key的類,記錄類 以及查詢Example類
- targetPackage 指定生成的model生成所在的包名
- targetProject 指定在該項目下所在的路徑
- -->
- <javaModelGenerator targetPackage="org.louis.hometutor.po" targetProject="src/main/java">
- <!-- 是否對model添加 構造函數 -->
- <property name="constructorBased" value="true"/>
- <!-- 是否容許子包,即targetPackage.schemaName.tableName -->
- <property name="enableSubPackages" value="false"/>
- <!-- 創建的Model對象是否 不可改變 即生成的Model對象不會有 setter方法,只有構造方法 -->
- <property name="immutable" value="true"/>
- <!-- 給Model添加一個父類 -->
- <property name="rootClass" value="com.foo.louis.Hello"/>
- <!-- 是否對類CHAR類型的列的數據進行trim操做 -->
- <property name="trimStrings" value="true"/>
- </javaModelGenerator>
- <!--Mapper映射文件生成所在的目錄 爲每個數據庫的表生成對應的SqlMap文件 -->
- <sqlMapGenerator targetPackage="org.louis.hometutor.domain" targetProject="src/main/java">
- <property name="enableSubPackages" value="false"/>
- </sqlMapGenerator>
- <!-- 客戶端代碼,生成易於使用的針對Model對象和XML配置文件 的代碼
- type="ANNOTATEDMAPPER",生成Java Model 和基於註解的Mapper對象
- type="MIXEDMAPPER",生成基於註解的Java Model 和相應的Mapper對象
- type="XMLMAPPER",生成SQLMap XML文件和獨立的Mapper接口
- -->
- <javaClientGenerator targetPackage="com.foo.tourist.dao" targetProject="src/main/java" type="MIXEDMAPPER">
- <property name="enableSubPackages" value=""/>
- <!--
- 定義Maper.java 源代碼中的ByExample() 方法的可視性,可選的值有:
- public;
- private;
- protected;
- default
- 注意:若是 targetRuntime="MyBatis3",此參數被忽略
- -->
- <property name="exampleMethodVisibility" value=""/>
- <!--
- 方法名計數器
- Important note: this property is ignored if the target runtime is MyBatis3.
- -->
- <property name="methodNameCalculator" value=""/>
- <!--
- 爲生成的接口添加父接口
- -->
- <property name="rootInterface" value=""/>
- </javaClientGenerator>
- <table tableName="lession" schema="louis">
- <!-- optional , only for mybatis3 runtime
- 自動生成的鍵值(identity,或者序列值)
- 若是指定此元素,MBG將會生成<selectKey>元素,而後將此元素插入到SQL Map的<insert> 元素之中
- sqlStatement 的語句將會返回新的值
- 若是是一個自增主鍵的話,你可使用預約義的語句,或者添加自定義的SQL語句. 預約義的值以下:
- Cloudscape This will translate to: VALUES IDENTITY_VAL_LOCAL()
- DB2: VALUES IDENTITY_VAL_LOCAL()
- DB2_MF: SELECT IDENTITY_VAL_LOCAL() FROM SYSIBM.SYSDUMMY1
- Derby: VALUES IDENTITY_VAL_LOCAL()
- HSQLDB: CALL IDENTITY()
- Informix: select dbinfo('sqlca.sqlerrd1') from systables where tabid=1
- MySql: SELECT LAST_INSERT_ID()
- SqlServer: SELECT SCOPE_IDENTITY()
- SYBASE: SELECT @@IDENTITY
- JDBC: This will configure MBG to generate code for MyBatis3 suport of JDBC standard generated keys. This is a database independent method of obtaining the value from identity columns.
- identity: 自增主鍵 If true, then the column is flagged as an identity column and the generated <selectKey> element will be placed after the insert (for an identity column). If false, then the generated <selectKey> will be placed before the insert (typically for a sequence).
- -->
- <generatedKey column="" sqlStatement="" identity="" type=""/>
- <!-- optional.
- 列的命名規則:
- MBG使用 <columnRenamingRule> 元素在計算列名的對應 名稱以前,先對列名進行重命名,
- 做用:通常須要對BUSI_CLIENT_NO 前的BUSI_進行過濾
- 支持正在表達式
- searchString 表示要被換掉的字符串
- replaceString 則是要換成的字符串,默認狀況下爲空字符串,可選
- -->
- <columnRenamingRule searchString="" replaceString=""/>
- <!-- optional.告訴 MBG 忽略某一列
- column,須要忽略的列
- delimitedColumnName:true ,匹配column的值和數據庫列的名稱 大小寫徹底匹配,false 忽略大小寫匹配
- 是否限定表的列名,即固定表列在Model中的名稱
- -->
- <ignoreColumn column="PLAN_ID" delimitedColumnName="true" />
- <!--optional.覆蓋MBG對Model 的生成規則
- column: 數據庫的列名
- javaType: 對應的Java數據類型的徹底限定名
- 在必要的時候能夠覆蓋由JavaTypeResolver計算獲得的java數據類型. For some databases, this is necessary to handle "odd" database types (e.g. MySql's unsigned bigint type should be mapped to java.lang.Object).
- jdbcType:該列的JDBC數據類型(INTEGER, DECIMAL, NUMERIC, VARCHAR, etc.),該列能夠覆蓋由JavaTypeResolver計算獲得的Jdbc類型,對某些數據庫而言,對於處理特定的JDBC 驅動癖好 頗有必要(e.g. DB2's LONGVARCHAR type should be mapped to VARCHAR for iBATIS).
- typeHandler:
- -->
- <columnOverride column="" javaType="" jdbcType="" typeHandler="" delimitedColumnName="" />
- </table>
- </context>
- </generatorConfiguration>
這裏使用了外置的配置文件generator.properties,能夠將一下屬性配置到properties文件之中,增長配置的靈活性:數據庫
- jdbc.driverLocation=D:\\maven\\com\\oracle\\ojdbc14\\10.2.0.4.0\\ojdbc14-10.2.0.4.0.jar
- jdbc.driverClass=oracle.jdbc.driver.OracleDriver
- jdbc.connectionURL=jdbc:oracle:thin:@//localhost:1521/XE
- jdbc.userId=LOUIS
- jdbc.password=123456
項目目錄以下:apache
以後彈出運行配置框,爲當前配置配置一個名稱,這裏其名爲"generator",而後在 「Command line」 選項中輸入「mybatis-generator:generate -e」mybatis
這裏加了「-e 」選項是爲了讓該插件輸出詳細信息,這樣能夠幫助咱們定位問題。oracle
若是添加成功,則會在run 選項中有「generator」 選項,以下:app
點擊運行,而後不出意外的話,會在控制檯輸出:less
- C:\Java\jdk1.7.0_71\bin\java -Dmaven.home=D:\software\apache-maven-3.0.5-bin -Dclassworlds.conf=D:\software\apache-maven-3.0.5-bin\bin\m2.conf -Didea.launcher.port=7533 "-Didea.launcher.bin.path=D:\applications\JetBrains\IntelliJ IDEA 14.0.2\bin" -Dfile.encoding=UTF-8 -classpath "D:\software\apache-maven-3.0.5-bin\boot\plexus-classworlds-2.4.jar;D:\applications\JetBrains\IntelliJ IDEA 14.0.2\lib\idea_rt.jar" com.intellij.rt.execution.application.AppMain org.codehaus.classworlds.Launcher -Didea.version=14.0.2 -s D:\software\apache-maven-3.0.5-bin\conf\settings.xml mybatis-generator:generate -e
- [INFO] Error stacktraces are turned on.
- [INFO] Scanning for projects...
- [INFO]
- [INFO] ------------------------------------------------------------------------
- [INFO] Building hometutor Maven Webapp 1.0-SNAPSHOT
- [INFO] ------------------------------------------------------------------------
- [INFO]
- [INFO] --- mybatis-generator-maven-plugin:1.3.2:generate (default-cli) @ hometutor ---
- [INFO] Connecting to the Database
- [INFO] Introspecting table louis.lession
- log4j:WARN No appenders could be found for logger (org.mybatis.generator.internal.db.DatabaseIntrospector).
- log4j:WARN Please initialize the log4j system properly.
- log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
- [INFO] Generating Example class for table LOUIS.LESSION
- [INFO] Generating Record class for table LOUIS.LESSION
- [INFO] Generating Mapper Interface for table LOUIS.LESSION
- [INFO] Generating SQL Map for table LOUIS.LESSION
- [INFO] Saving file LessionMapper.xml
- [INFO] Saving file LessionExample.java
- [INFO] Saving file Lession.java
- [INFO] Saving file LessionMapper.java
- [WARNING] Root class com.foo.louis.Hello cannot be loaded, checking for member overrides is disabled for this class
- [WARNING] Existing file E:\sources\tutor\src\main\java\org\louis\hometutor\po\Lession.java was overwritten
- [WARNING] Existing file E:\sources\tutor\src\main\java\com\foo\tourist\dao\LessionMapper.java was overwritten
- [INFO] ------------------------------------------------------------------------
- [INFO] BUILD SUCCESS
- [INFO] ------------------------------------------------------------------------
- [INFO] Total time: 2.334s
- [INFO] Finished at: Tue Jan 27 12:04:08 CST 2015
- [INFO] Final Memory: 8M/107M
- [INFO] ------------------------------------------------------------------------
- Process finished with exit code 0
好,看到BUILD SUCCESS,則大功告成,若是有錯誤的話,因爲添加了-e 選項,會把具體的詳細錯誤信息打印出來的,根據錯誤信息修改便可dom