Struts2 Demo Project

最新推荐文章于 2022-05-04 13:20:01 发布

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最新推荐文章于 2022-05-04 13:20:01 发布

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分类专栏： Java

本文链接：https://blog.youkuaiyun.com/foreverkoking/article/details/9885721

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本文介绍了一个基于Struts2框架的简单登录示例，包括配置文件、Java类及JSP页面的具体实现，并展示了如何使用Struts2进行国际化。

1 整体结构纵览

1.1 配置文件

Java Resources/src/struts.xml

WebContent/WEB-INF/web.xml

1.2 java文件

Java Resources/src/lee/LoginAction.java

1.3 jsp文件

WebContent/error.jsp

WebContent/index.jsp

WebContent/welcome.jsp

1.4 jar文件

WebContent/WEB-INF/lib/

包括

commons-fileupload.jar

commons-logging-api.jar

freemaker.jar

ognl.jar

struts-core.jar

xwork.jar

1.5 国际化资源文件

WebContent/WEB-INF/classes/lee/messageResource_zh_CN.properties

WebContent/WEB-INF/classed/lee/messageResource.properties

注: 国际化步骤

编写资源文件
在struts.xml文件中声明以便加载资源文件
使用bean标签显示国际化信息

2 具体实现

2.1 配置文件实现

web.xml

<?xml version="1.0" encoding="gbk"?>
<web-app 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" version="2.5">
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>

struts.xml

<?xml version="1.0" encoding="gbk"?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

<constant name="struts.custom.i18n.resources" value="messageResource" />

<constant name="struts.i18n.encoding" value="GBK" />

<package name="lee" extends="struts-default">
<action name="login" class="lee.LoginAction">

<result name="input">/login.jsp</result>
<result name="error">/error.jsp</result>
<result name="success">/welcome.jsp</result>
</action>
</package>
</struts>

2.2 java文件实现

LoginAction.java文件

package lee;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ActionContext;

/**
* Description:
* Copyright (C), 2008-2010, Yeeku.H.Lee
* This program is protected by copyright laws.
* Program Name:
* Date:
* @author Yeeku.H.Lee kongyeeku@163.com
* @version 1.0
*/
//Struts2的Action继承了ActionSupport
public class LoginActionextends ActionSupport
{
//定义封装请求参数的username和password属性
private String username;
private String password;

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;
}
//定义处理用户请求的execute方法
public String execute()throws Exception
{
//当username为scott，password为tiger即登录成功
if (getUsername().equals("scott")
&& getPassword().equals("tiger") )
{
//将登录的用户名放入session范围内
ActionContext.getContext().getSession().put("user" , getUsername());
return SUCCESS;
}
else
{
return ERROR;
}
}
}

2.3 jsp文件实现

error.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags"%>

<html>
<head>
<title><s:text name="errorPage"/></title>
</head>
<body>
<s:text name="failTip"/>
</body>
</html>

index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
<title><s:text name="loginPage"/></title>
</head>
<body>
<s:form action="login">
<s:textfield name="username" key="user"/>
<s:textfield name="password" key="pass"/>
<s:submit key="login"/>
</s:form>
</body>
</html>

welcome.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
<title><s:text name="succPage"/></title>
</head>
<body>
<s:text name="succTip">
<s:param>${sessionScope.user}</s:param>
</s:text> 
</body>
</html>