Struts2源码粗略分析一：准备开发环境

1. 创建Tomcat工程

创建一个名为struts2的Tomcat工程，然后按照以下截图配置相关信息。

2. 配置struts-2.2.1源码

将下载下来的struts-2.2.1解压至工程下，相关内容请参考《Struts源码粗略分析一》。

然后将以下信息加入构建路径中：

• struts-2.2.1/src/xwork-core/src/main/java
• struts-2.2.1/src/xwork-core/src/main/resources
• struts-2.2.1/src/core/src/main/java
• struts-2.2.1/src/core/src/main/resources
• struts-2.2.1/src/apps/blank/src/main/java
• struts-2.2.1/src/apps/blank/src/main/resources

3. 目录结构

4. maven编译

因为源码自带的开发lib包内容不足，无法完全编译，所以要在目录

C:/Documents and Settings/Administrator/My Documents/Workspace/eclipse/struts2/struts-2.2.1/src/core
C:/Documents and Settings/Administrator/My Documents/Workspace/eclipse/struts2/struts-2.2.1/src/xwork-core

下执行命令，然后会生成以下两个target目录。

"C:/apache-maven-2.2.1/bin/mvn.bat" compile

C:/Documents and Settings/Administrator/My Documents/Workspace/eclipse/struts2/struts-2.2.1/src/core/target
"C:/apache-maven-2.2.1/bin/mvn.bat" compile C:/Documents and Settings/Administrator/My Documents/Workspace/eclipse/struts2/struts-2.2.1/src/xwork-core/target

这一步的作用就是让maven去下载编译和执行所用的第三方jar包，这样就不需要一个个找了。如果编译或运行过程中缺少什么jar文件，请到maven下的repository目录中查找。

5.配置eclipse构建路径

除了下面两个包外，将struts-2.2.1的lib目录下所有jar文件拷贝到WEB-INF的lib目录中，因为这两个包的内容我们手动生成

• struts2-core-2.2.1.jar
• xwork-core-2.2.1.jar

（类文件保留也无所谓，反正Tomcat运行时会先装载源码生产的class文件，如果ClassLoader在后续操作中发现已有相同的class文件被装载则忽略后续内容，但jar里的资源文件会影响装载，不信自己运行一下就知道了）

编译过程缺少或版本低的jar文件可以到mvn对应的repository中查找，然后添加到构建路径中。下面就是xwork-extra中应该包括的包：

/struts2/web-app/WEB-INF/xwork-extra
org
org.apache.commons
org.apache.commons.io
org.apache.commons.lang.xwork
org.objectweb.asm.xwork

PS：编译整个工程之后，需要将这部分内容手动拷贝至WEB-INF/classes文件夹下，这样程序运行时才不会出现类缺失的异常。

6.配置源码

将WEB-INF的lib中jar包全部加入构建路径

解压struts-2.2.1文件夹的lib下的xwork-core-2.2.1.jar文件至WEB-INF/xwork-extra/下，删除与xwork相关的class文件后把这些class文件也配置到构建路径中，以下是最终的配置信息

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
	<classpathentry kind="src" path="struts-2.2.1/src/xwork-core/src/main/java"/>
	<classpathentry kind="src" path="struts-2.2.1/src/xwork-core/src/main/resources"/>
	<classpathentry kind="src" path="struts-2.2.1/src/core/src/main/java"/>
	<classpathentry kind="src" path="struts-2.2.1/src/core/src/main/resources"/>
	<classpathentry kind="src" path="struts-2.2.1/src/apps/blank/src/main/java"/>
	<classpathentry kind="src" path="struts-2.2.1/src/apps/blank/src/main/resources"/>
	<classpathentry kind="src" path="xwork.demo.src"/>
	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/jdk1.5.0_16"/>
	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/4"/>
	<classpathentry kind="var" path="TOMCAT_HOME/lib/servlet-api.jar"/>
	<classpathentry kind="var" path="TOMCAT_HOME/lib/jasper.jar"/>
	<classpathentry kind="var" path="TOMCAT_HOME/lib/jsp-api.jar"/>
	<classpathentry kind="var" path="TOMCAT_HOME/lib/el-api.jar"/>
	<classpathentry kind="var" path="TOMCAT_HOME/lib/annotations-api.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/antlr-2.7.2.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/aopalliance-1.0.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/asm-3.1.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/asm-commons-3.1.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/classworlds-1.1.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/commons-beanutils-1.7.0.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/commons-chain-1.2.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/commons-collections-3.2.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/commons-digester-2.0.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/commons-fileupload-1.2.1.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/commons-io-1.3.2.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/commons-lang-2.4.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/commons-logging-1.0.4.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/commons-logging-api-1.1.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/commons-validator-1.3.1.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/dwr-1.1.1.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/ezmorph-1.0.3.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/freemarker-2.3.16.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/json-lib-2.1-jdk15.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/juli-6.0.18.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/ognl-3.0.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/org.apache.felix.bundlerepository-1.2.1.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/org.apache.felix.framework-1.4.1.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/org.apache.felix.main-1.4.1.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/org.apache.felix.shell-1.0.2.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/org.apache.felix.shell.tui-1.0.2.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/oro-2.0.8.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/oval-1.31.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/plexus-container-default-1.0-alpha-10.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/plexus-utils-1.2.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/sitemesh-2.4.2.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/spring-beans-2.5.6.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/spring-context-2.5.6.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/spring-core-2.5.6.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/spring-test-2.5.6.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/spring-web-2.5.6.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/sslext-1.2-0.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/struts-core-1.3.10.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/testng-5.1-jdk15.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/tiles-api-2.0.6.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/tiles-core-2.0.6.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/tiles-jsp-2.0.6.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/velocity-1.6.3.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/velocity-tools-1.3.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/xpp3_min-1.1.3.4.O.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/lib/xstream-1.2.2.jar"/>
	<classpathentry kind="lib" path="web-app/WEB-INF/xwork-extra"/>
	<classpathentry kind="output" path="web-app/WEB-INF/classes"/>
</classpath>

7. 配置web-app

将“/struts2/struts-2.2.1/src/apps/blank/src/main/webapp”下所有内容拷贝至“/struts2/web-app”下

8.启动第一个Struts2应用

编译所有的源码文件后启动Tomcat，如果中途有任何错误，请到maven的repository目录中查找相关jar包直至顺利通过，Good luck！！！