Struts2/第一个程序-Regist-优快云博客

本文链接：https://blog.youkuaiyun.com/rorger/article/details/6028511

本文介绍如何使用Struts2框架实现一个简单的用户注册程序，包括环境搭建、配置文件编写及页面展示等内容。

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Struts2/第一个Regist程序

唉，太╭(╯^╰)╮啦；

我的JSP还没有学到家，居然就要我用Struts2；

今天花了中午睡觉的时间，进行了Struts2的第一个程序;

//我写的是hello程序，不是helloWorld，不过差不多，由于命名不是很规范，见谅

1.下载struts2；去apache下个full包

2.使用MyEclipse，建立一个userlibrary，导入struts2的lib，方便以后使用，这里我取名为struts2；

3.建立一个web工程，默认会有一个index.jsp网页

4.给工程增加userlibrary，就是struts2

5.在src下面建立 struts.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
    <package name="default" extends="struts-default">
    <action name="Regist" class="example.Regist">
    <result name="success">/success.jsp</result>
    <result name="error">/error.jsp</result>
    </action>
    </package>
</struts>

6. src下建立一个Regist.java(O(∩_∩)O~，其实这个在前面第5步会更好)

package example;

import com.opensymphony.xwork2.ActionSupport;

public class Regist extends ActionSupport {
    public String execute() throws Exception {
        if (password==confirmPassword) {
            return this.SUCCESS;
        }
        else {
            return this.ERROR;
        }
    }

    private String userName;
    private String password;
    private String confirmPassword;

    public void setUserName(String userName) {
        this.userName = userName;
    }

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

    public String getPassword() {
        return password;
    }

    public String getUserName() {
        return this.userName;
    }

    public void setConfirmPassword(String confirmPassword) {
        this.confirmPassword = confirmPassword;
    }

    public String getConfirmPassword() {
        return confirmPassword;
    }

}

7.配置Web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
    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">

    <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>
   <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
   </welcome-file-list>

</web-app>

8.确认你的WEB-INF下的lib包含了很多必要的包，如果不知道什么包，就全部导入吧，我这里是直接拷贝进去的

9.写jsp啦 3个文件，一个index.jsp 第二个 success.jsp 第三个是error.jsp

首先是index.jsp

<?xml version="1.0" encoding="UTF-8" ?>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<!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=UTF-8" />
<title>首页</title>
</head>
<body>
<center><h2>用户注册</h2></center>
<s:form action="Regist">
    <s:textfield name="userName" label="姓名:"></s:textfield>
    <s:password name="password" label="密码"></s:password>
    <s:password name="confirmPassword" label="确认密码"></s:password>
    <s:submit value="提交"></s:submit>
</s:form>
</body>
</html>

第二个是success.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<%
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>My JSP 'success.jsp' starting page</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">
    

</head>

<body>
    <h3>Success!</h3><br>
    注册成功,您的用户名是:<s:property value="userName" /><br/>
    您的密码是:<s:property value="password" /><br/>
    <span style="font-family:Arial;color:red">注意!请妥善保管好您的密码.</span>
</body>
</html>

第三个是error.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<%
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>My JSP 'success.jsp' starting page</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">
    

</head>

<body>
    <h3>Sorry!</h3><br>
    <span style="font-family:Arial;color:red"> password not equrals to the confirm one.</span>
    <a href="javascript:history.go(-2)">You can go back .</a>
</body>
</html>