配置Struts2的过程（样例）

1、首先，打开MyEclipse开发软件，新建一个Web Project，命名struts2;

2、配置Tomcat服务器

3、配置server.xml

server.xml:

<?xml version='1.0' encoding='utf-8'?>
<!--
  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.
-->
<!-- Note:  A "Server" is not itself a "Container", so you may not
     define subcomponents such as "Valves" at this level.
     Documentation at /docs/config/server.html
 -->
<Server port="8005" shutdown="SHUTDOWN">
  <!-- Security listener. Documentation at /docs/config/listeners.html
  <Listener className="org.apache.catalina.security.SecurityListener" />
  -->
  <!--APR library loader. Documentation at /docs/apr.html -->
  <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
  <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->
  <Listener className="org.apache.catalina.core.JasperListener" />
  <!-- Prevent memory leaks due to use of particular java/javax APIs-->
  <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
  <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />

  <!-- Global JNDI resources
       Documentation at /docs/jndi-resources-howto.html
  -->
  <GlobalNamingResources>
    <!-- Editable user database that can also be used by
         UserDatabaseRealm to authenticate users
    -->
    <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
              description="User database that can be updated and saved"
              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
              pathname="conf/tomcat-users.xml" />
  </GlobalNamingResources>

  <!-- A "Service" is a collection of one or more "Connectors" that share
       a single "Container" Note:  A "Service" is not itself a "Container",
       so you may not define subcomponents such as "Valves" at this level.
       Documentation at /docs/config/service.html
   -->
  <Service name="Catalina">

    <!--The connectors can use a shared executor, you can define one or more named thread pools-->
    <!--
    <Executor name="tomcatThreadPool" namePrefix="catalina-exec-"
        maxThreads="150" minSpareThreads="4"/>
    -->


    <!-- A "Connector" represents an endpoint by which requests are received
         and responses are returned. Documentation at :
         Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
         Java AJP  Connector: /docs/config/ajp.html
         APR (HTTP/AJP) Connector: /docs/apr.html
         Define a non-SSL HTTP/1.1 Connector on port 8080
    -->
    <Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />
    <!-- A "Connector" using the shared thread pool-->
    <!--
    <Connector executor="tomcatThreadPool"
               port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />
    -->
    <!-- Define a SSL HTTP/1.1 Connector on port 8443
         This connector uses the JSSE configuration, when using APR, the
         connector should be using the OpenSSL style configuration
         described in the APR documentation -->
    <!--
    <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true"
               maxThreads="150" scheme="https" secure="true"
               clientAuth="false" sslProtocol="TLS" />
    -->

    <!-- Define an AJP 1.3 Connector on port 8009 -->
    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />


    <!-- An Engine represents the entry point (within Catalina) that processes
         every request.  The Engine implementation for Tomcat stand alone
         analyzes the HTTP headers included with the request, and passes them
         on to the appropriate Host (virtual host).
         Documentation at /docs/config/engine.html -->

    <!-- You should set jvmRoute to support load-balancing via AJP ie :
    <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">
    -->
    <Engine name="Catalina" defaultHost="localhost">

      <!--For clustering, please take a look at documentation at:
          /docs/cluster-howto.html  (simple how to)
          /docs/config/cluster.html (reference documentation) -->
      <!--
      <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
      -->

      <!-- Use the LockOutRealm to prevent attempts to guess user passwords
           via a brute-force attack -->
      <Realm className="org.apache.catalina.realm.LockOutRealm">
        <!-- This Realm uses the UserDatabase configured in the global JNDI
             resources under the key "UserDatabase".  Any edits
             that are performed against this UserDatabase are immediately
             available for use by the Realm.  -->
        <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
               resourceName="UserDatabase"/>
      </Realm>

      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">

        <!-- SingleSignOn valve, share authentication between web applications
             Documentation at: /docs/config/valve.html -->
        <!--
        <Valve className="org.apache.catalina.authenticator.SingleSignOn" />
        -->

        <!-- Access log processes all example.
             Documentation at: /docs/config/valve.html
             Note: The pattern used is equivalent to using pattern="common" -->
        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhost_access_log." suffix=".txt"
               pattern="%h %l %u %t "%r" %s %b" />
               
       <Context path="/struts2" docBase="D:\MyEclipse\workspace\struts2\WebRoot" reloadable="true"/>

      </Host>
    </Engine>
  </Service>
</Server>

4、打开struts2，在WebContent目录下新建一个login.jsp文件，源码如下：

login.jsp:

<%@ 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 HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>登录界面</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<style type="text/css">
	 fieldset{
	      font-size: 12px;
	      font-weight: bold;
	      background-color: #807989;
	      text-align: center;
	      width:240px;
	      height: 100px;
	 }
	    form{
	      font-size:12px;
	      text-align:center;
	      background-color: #CCCCCC;
	      width:240px;
	      height: 90px;
	    }
	</style>

  </head>
  
  <body>
   <center>
    <fieldset>
         <legend>登录界面</legend>
         <form action="login.action" method="post">
                       用户名:<input type="text" name="username" id="username" value=""/><br/>
                       密 码:<input type="password" name="password" id="password" value=""/><br/>
         <input type="submit" name="submit" value="提交">
         <input type="reset" name="reset" value="重置">
     </form>
    </fieldset>
   </center>
  </body>
</html>

5、配置web.xml

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
	"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
	"http://struts.apache.org/dtds/struts-2.3.dtd">
	
<struts>
  <!-- 配置名为login的Action -->
  <package name="struts2" extends="struts-default">
        <action name="login" class="com.you.struts.LoginAction">
               <result name="success">/result.jsp</result>
        </action>
  </package>
</struts>

6、导入struts2夹包

7、在src目录下新建一个包，并在该包下创建一个LoginAction类和struts.xml文件

8、编写LoginAction，它的源文件如下：

LoginAction.java:

/**
 * @Title:LoginAction.java
 * @Package:com.you.struts
 * @Description:登录的Action
 * @author:Youhaidong(游海东)
 * @date:2013-6-30 上午12:01:36
 * @version V1.0
 */
package com.you.struts;

/**
 * 类功能说明
 * 类修改者 修改日期
 * 修改说明
 * <p>Title:LoginAction.java</p>
 * <p>Description:游海东个人开发</p>
 * <p>Copyright:Copyright(c)2013</p>
 * @author:游海东
 * @date:2013-6-30 上午12:01:36
 * @version V1.0
 */
public class LoginAction {
	
	//用户名
	private String username;
	//密码
	private String password;
	
	/**
	 * execute方法
	 * @Title:execute
	 * @Description:execute
	 * @param:@return
	 * @param:@throws Exception
	 * @return:String
	 * @throws
	 */
	public String execute() throws Exception{
		return "success";
	}

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

}

9、配置struts.xml

struts.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
	"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
	"http://struts.apache.org/dtds/struts-2.3.dtd">
	
<struts>
  <!-- 配置名为login的Action -->
  <package name="struts2" extends="struts-default">
        <action name="login" class="com.you.struts.LoginAction">
               <result name="success">/result.jsp</result>
        </action>
  </package>
</struts>

10、再次在WebContent目录下新建一个返回结果的result.jsp文件

result.jsp：

<%@ 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 HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>返回结果界面</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<style type="text/css">
	   table{
	      font-size: 12px;
	      background-color: #A2BCD8;
	      border:1px solid #E8F2FE;
	   }
	   label{
	      font-size: 12px;
	      font-weight: bold;
	   }
	</style>

  </head>
  
  <body>
     <table>
        <tr>
          <td>
            <label>用户名:${requestScope.username}</label> <br>
            <label>密码:${requestScope.password}</label>
          </td>
        </tr>
     </table>       
  </body>
</html>

11、运行Tomcat，在浏览器地址栏输入：http://localhost:8080/struts2/login.jsp

（1）按回车键，会显示如下图：

（2）输入用户名和密码后，点击“提交”，会跳到：http://localhost:8080/struts2/login.action