J2EE Web開發入門—經過action是以傳統方式返回JSON數據

時間 2019-11-06

標籤 j2ee web 開發入門經過 action 傳統方式返回 json 數據欄目 Java 简体版

原文原文鏈接

關鍵字：maven、m2eclipse、JSON、Struts2、Log4j2、tomcat、jdk7、Config Browser Pluginjavascript

Created by Bob 20131031html

l 開發準備工做

1、開發所需工具及相關組件介紹

Eclipse IDE for Java EE Developers, 247 MBjava

http://www.eclipse.org/downloads/jquery

apache-tomcat-7.0.42-windowsweb

http://www.apache.org/dist/tomcat/tomcat-7/v7.0.42/bin/apache

Java SE Development Kit 7u45json

http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.htmlwindows

apache-maven-3.1.0-binapi

http://maven.apache.org/download.cgitomcat

2、搭建開發環境參考文檔

JDK安裝及配置

http://xiaoxing598.diandian.com/post/2012-05-06/17031020

Maven安裝及配置

http://blog.csdn.net/yuguiyang1990/article/details/8775046

安裝m2eclipse插件

http://blog.csdn.net/yuguiyang1990/article/details/8796410

Tomcat安裝及配置

http://jingyan.baidu.com/article/8065f87fcc0f182330249841.html

SVN安裝及配置

http://www.tech-juice.org/2012/05/01/how-to-add-a-new-eclipse-project-to-an-svn-repository/

ConfigBrowser插件

http://struts.apache.org/release/2.2.x/docs/config-browser-plugin.html

l 第一個開發實踐

經過Struts2返回第一個JSON對象的源碼下載：

http://bobproject.googlecode.com/svn/tags/tag_ReportWebApp_source_v1.0

1、經過maven的pom.xml引入相關組件

1、struts2的dependency

http://mvnrepository.com/artifact/org.apache.struts/struts2-core/2.3.15.2

2、json的dependency

</dependency>

3、javax.servlet的dependency

<groupId>org.eclipse.jetty.orbit</groupId>

<artifactId>javax.servlet</artifactId>

</dependency>

4、log4j2的dependency http://logging.apache.org/log4j/2.x/maven-artifacts.html

<groupId>org.apache.logging.log4j</groupId>

</dependency>

<groupId>org.apache.logging.log4j</groupId>

</dependency>

5、ConfigBrowser插件

<groupId>org.apache.struts</groupId>

<artifactId>struts2-config-browser-plugin</artifactId>

</dependency>

2、搭建struts2程序框架

1、建立ReportAction.java

建立public void doAction() throws IOException；

2、建立struts.xml配置文件

<!DOCTYPE struts PUBLIC

"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"

"http://struts.apache.org/dtds/struts-2.3.dtd">

<action name="testJSONFromActionByGeneral" class="com.tuoming.iqa.action.ReportAction"

method="doAction">

</action>

</package>

</struts>

3、web.xml中添加struts2配置代碼

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.5"

xmlns="http://java.sun.com/xml/ns/javaee"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/javaee

http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

<welcome-file-list>

<welcome-file>index.jsp</welcome-file>

</welcome-file-list>

<filter-name>struts2</filter-name>

<filter-class>

org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter

</filter-class>

</filter>

<filter-mapping>

<filter-name>struts2</filter-name>

<url-pattern>*.action</url-pattern>

</filter-mapping>

</web-app>

4、index.jsp中添加客戶端代碼

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

String path = request.getContextPath();

String basePath = request.getScheme() + "://"

+ request.getServerName() + ":" + request.getServerPort()

+ path + "/";

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<metahttp-equiv="Content-Type"content="text/html; charset=UTF-8">

<title>Struts2與JSON測試</title>

</head>

<body>

<a href="<%=basePath%>testJSONFromActionByGeneral.action" title="測試從Action以常規方式獲取JSON數據">測試從Action以常規方式獲取JSON數據</a>

</body>

</html>

5、pom.xml中添加tomcat-maven-plugin的plugin

<groupId>org.codehaus.mojo</groupId>

<artifactId>tomcat-maven-plugin</artifactId>

<url>http://localhost:8080/manager/text</url>

<path>/ ReportWebApp</path>

<server>tomcat</server>

<username>admin</username>

<password>password</password>

</configuration>

</plugin>

6、Right Click >> Run As >> Maven Build,在窗口中的Goals內輸入：package tomcat:redeploy

3、採用Log4j2實現日誌功能

1、指定目錄下建立log4j2.xml，內容以下：

<?xml version="1.0" encoding="UTF-8"?>

<RollingFile name="outErrorFile" fileName="RWA_logs/exception.log"

filePattern="RWA_logs/$${date:yyyy-MM}/exception-%d{MM-dd-yyyy}-%i.log.gz">

<PatternLayout

pattern="%d{yyyy.MM.dd HH:mm:ss z} %-5level %class{36} %L %M - %msg%xEx%n" />

</RollingFile>

<RollingFile name="outDebugFile" fileName="RWA_logs/debug.log"

filePattern="RWA_logs/$${date:yyyy-MM}/exception-%d{MM-dd-yyyy}-%i.log.gz">

<PatternLayout

pattern="%d{yyyy.MM.dd HH:mm:ss z} %-5level %class{36} %L %M - %msg%xEx%n" />

</RollingFile>

<RollingFile name="outInfoFile" fileName="RWA_logs/info.log"

filePattern="RWA_logs/$${date:yyyy-MM}/exception-%d{MM-dd-yyyy}-%i.log.gz">

<PatternLayout

pattern="%d{yyyy.MM.dd HH:mm:ss z} %-5level %class{36} %L %M - %msg%xEx%n" />

</RollingFile>

<PatternLayout

pattern="%d{yyyy.MM.dd HH:mm:ss z} %-5level %class{36} %L %M - %msg%xEx%n" />

</Console>

</appenders>

<appender-ref level="DEBUG" ref="outDebugFile" />

<appender-ref level="ERROR" ref="outErrorFile" />

<appender-ref level="INFO" ref="outInfoFile" />

</root>

</loggers>

</configuration>

2、需打印日誌的Class中添加成員變量代碼

private static Logger log = LogManager.getLogger(ReportInfo.class.getName());

3、打印日誌方法以下

log.debug("經過action是以傳統方式返回JSON數據");

4、C:\tomcat\bin\RWA_logs目錄下查看日誌是否生成

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