Struts2 global_results 全局结果集

本文介绍了一个基于Struts2框架的应用实例,包括不同页面的配置与展示方式,通过UserAction和AdminAction实现了多种结果返回,展示了Struts2如何进行结果页面的跳转。

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index.jsp

<?xml version="1.0" encoding="GB18030" ?>
<%@ page language="java" contentType="text/html; charset=GB18030"
    pageEncoding="GB18030"%>

<% String context = request.getContextPath(); %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030" />
<title>Insert title here</title>
</head>
<body>
Result类型
<ol>
    <li><a href="user/user?type=1">返回success</a></li>
    <li><a href="user/user?type=2">返回error</a></li>
    <li><a href="user/user?type=3">返回global result</a></li>
    <li><a href="admin/admin">admin,继承user包</a></li>
</ol>
</body>
</html>

main.jsp

<?xml version="1.0" encoding="GB18030" ?>
<%@ page language="java" contentType="text/html; charset=GB18030"
    pageEncoding="GB18030"%>
    <%@taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030" />
<title>Main</title>
</head>
<body>
    MainPage
</body>
</html>

user_error.jsp

<?xml version="1.0" encoding="GB18030" ?>
<%@ page language="java" contentType="text/html; charset=GB18030"
    pageEncoding="GB18030"%>
    <%@taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030" />
<title>UserError</title>
</head>
<body>
    User Error!
</body>
</html>

user_success.jsp

<?xml version="1.0" encoding="GB18030" ?>
<%@ page language="java" contentType="text/html; charset=GB18030"
    pageEncoding="GB18030"%>
    <%@taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030" />
<title>UserSuccess</title>
</head>
<body>
    User Success!
</body>
</html>

struts.xml

<struts>
    <constant name="struts.devMode" value="true" />
    <package name="user" namespace="/user" extends="struts-default">


        <global-results>
            <result name="mainpage">/main.jsp</result>
        </global-results>

        <action name="index">
            <result>/index.jsp</result>
        </action>

        <action name="user" class="com.bjsxt.struts2.user.action.UserAction">
            <result>/user_success.jsp</result>
            <result name="error">/user_error.jsp</result>
        </action>       
    </package>

    <package name="admin" namespace="/admin" extends="user">
        <action name="admin" class="com.bjsxt.struts2.user.action.AdminAction">
            <result>/admin.jsp</result>
        </action>
    </package>
</struts>

AdminAction.java

package com.bjsxt.struts2.user.action;

import com.opensymphony.xwork2.ActionSupport;

public class AdminAction extends ActionSupport {

    @Override
    public String execute() throws Exception {
        return "mainpage";
    }

}

UserAction.java

package com.bjsxt.struts2.user.action;

import com.opensymphony.xwork2.ActionSupport;

public class UserAction extends ActionSupport {
    private int type;



    public int getType() {
        return type;
    }



    public void setType(int type) {
        this.type = type;
    }



    @Override
    public String execute() throws Exception {
        if(type == 1) return "success";
        else if (type == 2) return "error";
        else return "mainpage";
    }

}
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