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  • 页面跳转之session

    题意:设主页为index.jsp 通过session将index.jsp中的信息传送给结果页面result.jsp。(其实,session的生命周期是整个服务器开启过程,具体不做详细介绍)。这个 其实 挺简单的,就几行代码的事情。希望能帮助迷茫着的人。(感觉自己走出了迷茫了,嘿嘿)。

    第一步:写index.jsp页面。设置好要传值的name。

    <%@ 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=ISO-8859-1">
    <title>Insert title here</title>
    </head>
    <body>
    
    <form method = "post"  action = "login">
        用户名:<input type = "text"  name = "name" >
        密码:<input type = "password"  name = "password">
        <input type ="submit" value = "提交">
    </form>
    </body>
    </html>

    第二部:strut2.xml配置(action配置)在src目录下面创建(这样才能被服务器找到)

    <?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="WEB-INF" extends="struts-default">
                <action name="login" class="com.session.test.Login">
                    <result name="success">Result.jsp</result>
                </action>
        </package>
    </struts>

    第三部(两种方法)

      3.1.1编写Login类,用session方法获取name值,用于整个服务器开启周期内。

    package com.session.test;
    
    import com.opensymphony.xwork2.ActionContext;
    import com.opensymphony.xwork2.ActionSupport;
    
    public class login extends ActionSupport{
        private String name;
        private String password;
        
          public String execute() throws Exception {
                  ActionContext context=ActionContext.getContext();
                context.getSession().put("user",name);
                context.getSession().put("password",password);
                return SUCCESS;
          }
    }

      3.1.2再编写result.jsp页面。用String name = (String) session.getAttribute("name");获取

    <%@ 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=ISO-8859-1">
    <title>Insert title here</title>
    </head>
    <body>
    <% 
        String name = (String) session.getAttribute("name");
        String password = (String) session.getAttribute("password");
    %>
    用户名:<%= name %>
    密码:<%= password %>
    </body>
    </html>

    3.2.1

    不用配置strut2.xml文件,直接从页面中获取值。为了更好的体现,设置了一个中间页面,midContinue.jsp

    <%@ 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=ISO-8859-1">
    <title>Insert title here</title>
    </head>
    <body>
    <% 
        String name = request.getParameter("name");
        session.setAttribute("name",name);
        String password = request.getParameter("password");
        session.setAttribute("password",password);
    %>
    <a href="Result.jsp">继续</a>
    </body>
    </html>

    3.1.3用session传值

    <%@ 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=ISO-8859-1">
    <title>Insert title here</title>
    </head>
    <body>
    
    <% 
        String name = (String) session.getAttribute("name");
        String password = (String) session.getAttribute("password");
    %>
    用户名:<%= name %>
    密码:<%= password %>
    </body>
    </html>

    好了这是整个过程,两种方式,希望能帮助需要的人,也不枉我又是敲代码,又是自己敲字。

    收工!有问题请回复,这是我自己写的第一篇,期望提些意见。

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  • 原文地址:https://www.cnblogs.com/yanfeiguo1011/p/3307650.html
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