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Spring mvc页面表单提交获取数据后台接收参数实现

1.新建一个web工程,搭建好Springmvc运行环境

2.新建两个页面(提交页面,成功页面)如下:

     2.1form 页面

 1 <%@ page language="java" contentType="text/html; charset=utf-8"
 2     pageEncoding="utf-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10     <!-- 提交路径 -->
11     <form action="${pageContext.request.contextPath}/controller2/form"
12         method="post" accept-charset="UTF-8">
13         <table>
14             <tr>
15                 <td>用户名:</td>
16                 <td><input type="text" name="userName"></td>
17             </tr>
18             <tr>
19                 <td>密码:</td>
20                 <td><input type="password" name="userPwd"></td>
21             </tr>
22             <tr>
23                 <td><input type="submit" value="登陆"></td>
24             </tr>
25         </table>
26     </form>
27 </body>
28 </html>

   success页面

 1 <%@ page language="java" contentType="text/html; charset=utf-8"
 2     pageEncoding="utf-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 form page is success
11 </body>
12 </html>

 

  2.1、直接把表单的参数写在Controller相应的方法的形参中  

    (控制器中方法的形参String userName,String userPwd名称必须和登陆页面的name="userName",name="userPwd"相同)

  

 1 package com.springmvc.tranfercontroller;
 2 
 3 import org.springframework.stereotype.Controller;
 4 import org.springframework.web.bind.annotation.RequestMapping;
 5 
 6 /**
 7  * 基于注解带参数传输案例
 8  * 
 9  * @author Administrator
10  *
11  */
12 @Controller
13 @RequestMapping(value = "/controller2")
14 public class TranferController2 {
15     // 成功提交跳转对应的方法
16     @RequestMapping(value = "/form")
17     public String form(String userName, Integer userPwd) {
18         System.out.println("用户名:" + userName + "用户密码:" + userPwd);
19         System.out.println("println login of controller");
20         return "success";
21     }
22 
23     // 访问页面路径对应的方法
24     @RequestMapping(value = "/form2")
25     public String form() {
26         return "form";
27     }
28 }

 

    2.2通过HttpServletRequest接收

(控制器中String userName=request.getParameter("userName");String userPwd=request.getParameter("userPwd");的参数名称必须和登陆页面的name="userName",name="userPwd"相同)

 1 @Controller
 2     @RequestMapping("/controller2")
 3     public class TranferController2 {
 4         @RequestMapping("/form")
 5         public String form(HttpServletRequest request) {
 6             String userName=request.getParameter("userName");
 7             String userPwd=request.getParameter("userPwd");
 8             System.out.println("用户名:" + userName + "用户密码:" + userPwd);
 9             System.out.println("println login of controller");
10             return "success";
11         }
12     }

  

3.在web项目中经常会提交表单,偶尔会遇到表单中文参数乱码

如:

  3.1、在html中head部分设置

1
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />

   3.2、在form标签中增加:

1
<form method="post" action="#" accept-charset="UTF-8">

以上两种方式都试了一下,问题还是不能解决。

在web.xml文件中增加如下代码:

复制代码
    <filter>
      <filter-name>encodingFilter</filter-name>
      <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
      <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
      </init-param>
      <init-param>
        <param-name>forceEncoding</param-name>
        <param-value>true</param-value>
      </init-param>
    </filter>
    <filter-mapping>
      <filter-name>encodingFilter</filter-name>
      <url-pattern>/*</url-pattern>
    </filter-mapping>
复制代码

 

4.测试结果(注意访问路径不同)

 

posted @ 2020-06-04 10:04  云源  阅读(1995)  评论(0编辑  收藏  举报
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