照葫芦画瓢系列之Java --- eclipse下使用maven创建Struts 2项目

一、创建Maven项目

http://www.cnblogs.com/zhanqun/p/8425571.html

二、添加struts2核心依赖包以及其他依赖项

打开pom.xm配置界面

点击Add按钮添加struts2-core.jar

选中并点击Ok添加进入项目即可；添加完成后如下

三、新建Action

1、新建package名为cn.smallbyte.mavendemo.action

2、在包内创建以UserAction命名的class，继承自com.opensymphony.xwork2.ActionSupport

UserAction.java内容如下

package cn.smallbyte.mavendemo.action;

import java.io.UnsupportedEncodingException;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class UserAction extends ActionSupport {
    private static final long serialVersionUID = 1L;

    public String execute() {
        return SUCCESS;
    }

    public String login() {
        try {
            HttpServletRequest request = ServletActionContext.getRequest();
            HttpServletResponse response = ServletActionContext.getResponse();
            request.setCharacterEncoding("UTF-8");
            response.setContentType("text/html;charset=utf-8");
            String username = request.getParameter("username");
            String password = request.getParameter("password");
            System.out.println("name->" + username + ",password->" + password);
            if ("admin".equals(username) && "123456".equals(password)) {
                return SUCCESS;
            } else {
                return "login";
            }
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return SUCCESS;
    }
}

3、配置struts2的核心配置文件（src/main/resources下struts.xml文件），内容如下：

<?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>
    <constant name="struts.enable.DynamicMethodInvocation" value="false" />
    <constant name="struts.devMode" value="true" />
    
    <package name="mavendemoAction" namespace="/demo" extends="struts-default">
        <action name="login" class="cn.smallbyte.mavendemo.action.UserAction"
            method="login">
            <result name="success">/success.jsp</result>
            <result name="login">/login.jsp</result>
        </action>
    </package>
</struts>

4、配置/src/main/webapp/WEB-INF/web.xml，内容如下：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="WebApp_ID" version="3.0">
    <display-name>mavendemo</display-name>
    <!-- struts2 -->
    <filter>
        <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>

5、创建web页面

struts.xml文件中配置了success.jsp/login.jsp两个页面

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Login Page</title>
</head>
<body>
    <form action="${pageContext.request.contextPath}/demo/login.action" method="post">
        username:<input type="text" name="username" value="" /><br />
        password:<input type="text" name="password" value="" /> <br />
        <input type="submit" value="提交" />
    </form>
</body>
</html>

success.jsp如下

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Login Success</title>
</head>
<body>Login Success
</body>
</html>