这篇文章解决的问题是怎么在业务方法里面引入我们熟悉的HttpServletRequest和HttpServletRespon?
答案:这种引入传统的web参数的做法不推荐去做，因为这么做会实行高度耦合。
但还是说一下这种做法：
在Action修改代码如下：
package com.guigu.shen.Action7; import java.io.IOException; import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse; import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
/**
*
*
请求路径可以拆分为：根模块的名字+分模块的名字
就是相当于当访问http://127.0.0.1:8080:项目名/user/register时就会进入到
registerMethod方法。 */
@Controller
@RequestMapping(value="/user")//根模块的请求名字
public class UserAction {
/*
* 员工注册
*
*/
@RequestMapping(method=RequestMethod.POST,value="/register")//分模块的请求名字 public String registerMethod(HttpServletRequest httpServletRequest,HttpServletResponse httpServletResponse)
{/* 通过HttpServletRequest和HttpServletRespon得到数据。
*/ String username=httpServletRequest.getParameter("username");
String salery=httpServletRequest.getParameter("salary");
//保存到Session会话级别
httpServletRequest.getSession().setAttribute("username", username);
httpServletRequest.getSession().setAttribute("salary", salery);
//重定向
try {
httpServletResponse.sendRedirect(httpServletRequest.getContextPath()+"/jsp/success.jsp"); System.out.println("l路径是"+httpServletRequest.getContextPath());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null; } }
success.jsp代码如下:
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<%
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 'index.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">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head> <body>
Success. <br>
<%-- 输出上一个页面输入的值 --%>
${username}
${salary} </body>
</html>
结果如下：
Success.
aaa
1000