java中Spring接收表单参数的方法

程序员文章站 2022-05-05 13:13:47

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本篇文章主要介绍了SpringMVC接收页面表单参数的相关知识，具有很好的参考价值。下面跟着小编一起来看下吧

1、直接把表单的参数写在Controller相应的方法的形参中

@RequestMapping("/addUser1")
 public String addUser1(String userName,String password) {
  System.out.println("userName is:"+userName);
  System.out.println("password is:"+password);
  return "/user/success";
 }

2、通过HttpServletRequest接收

@RequestMapping("/addUser2")
 public String addUser2(HttpServletRequest request) {
  String userName = request.getParameter("userName");
  String password = request.getParameter("password");
  System.out.println("userName is:"+userName);
  System.out.println("password is:"+password);
  return "/user/success";
 }

3、通过一个bean来接收

1）建立一个和表单中参数对应的bean

public class User { private String userName; private String password; public String getUserName() { return userName; }
　　//getter，setter方法。。. }

2）用这个bean来封装接收的参数

　　@RequestMapping("/addUser3")
 public String addUser3(User user) {
  System.out.println("userName is:"+user.getUserName());
  System.out.println("password is:"+user.getPassword());
  return "/user/success";
 }

4、通过json数据接收

<%@ 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=UTF-8">
<title>Add User</title>
<script type="text/javascript" src="${pageContext.request.contextPath}/resource/script/jquery-1.9.1.min.js"></script>
<script type="text/javascript">
 $(document).ready(function(){
  $("#button_submit").click(function(){
   var name = $("#userName").val();
   var pass = $("#password").val();
   var user = {userName:name,password:pass};//拼装成json格式
   $.ajax({
    type:"POST",
    url:"${pageContext.request.contextPath}/user/addUser4",
    data:user,
    success:function(data){
     alert("成功");
    },
    error:function(e) {
     alert("出错："+e);
    }
   });
  });
 });
</script>
</head>
<body>
 <form>
  <table>
   <tr>
    <td>账号</td>
    <td>
     <input type="text" id="userName" name="userName">
    </td>
   </tr>
   <tr>
    <td>密码</td>
    <td>
     <input type="password" id="password" name="password">
    </td>
   </tr>
   <tr>
    <td> </td>
    <td>
     <input type="button" id="button_submit" value="提交">
    </td>
   </tr>
  </table>
 </form>
</body>
</html>

依然可以使用bean来接收json数据

@RequestMapping("/addUser4")
 public String addUser4(User user) {
  System.out.println("userName is:"+user.getUserName());
  System.out.println("password is:"+user.getPassword());
  return "/user/success";
 }

5、使用jQuery的serializeArray() 方法序列化表单元素

如果表单元素很多，手工拼装成json数据非常麻烦，可以使用jQuery提供的serializeArray()方法序列化表单元素，返回json数据结构数据。　

<%@ 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=UTF-8">
<title>Add User</title>
<script type="text/javascript" src="${pageContext.request.contextPath}/resource/script/jquery-1.9.1.min.js"></script>
<script type="text/javascript">
 $(document).ready(function(){
  $("#button_submit").click(function(){
   //序列化表单元素，返回json数据
   var params = $("#userForm").serializeArray();
   //也可以把表单之外的元素按照name value的格式存进来
   //params.push({name:"hello",value:"man"});
   $.ajax({
    type:"POST",
    url:"${pageContext.request.contextPath}/user/addUser5",
    data:params,
    success:function(data){
     alert("成功");
    },
    error:function(e) {
     alert("出错："+e);
    }
   });
  });
 });
</script>
</head>
<body>
 <form id="userForm">
  <table>
   <tr>
    <td>账号</td>
    <td>
     <input type="text" id="userName" name="userName">
    </td>
   </tr>
   <tr>
    <td>密码</td>
    <td>
     <input type="password" id="password" name="password">
    </td>
   </tr>
   <tr>
    <td> </td>
    <td>
     <input type="button" id="button_submit" value="提交">
    </td>
   </tr>
  </table>
 </form>
</body>
</html>

依然可以使用bean来接收json数据：

@RequestMapping("/addUser5")
 public String addUser5(User user) {
  System.out.println("userName is:"+user.getUserName());
  System.out.println("password is:"+user.getPassword());
  return "/user/success";
 }

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