SpringMVC接收页面表单参数方式

最新推荐文章于 2022-05-12 17:13:39 发布

AZHELL

最新推荐文章于 2022-05-12 17:13:39 发布

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分类专栏：框架工具

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本文介绍了五种不同的表单提交处理方法，包括直接在Controller中使用方法参数接收、通过HttpServletRequest对象接收、通过Bean对象接收、通过JSON数据接收及利用jQuery序列化表单元素并发送为JSON格式。

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表单代码如下：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Add User</title>


<script type="text/javascript">
    //添加用户
    function addUser() {
        var form = document.forms[0];
        form.action = "${pageContext.request.contextPath}/user/addUser1";
        //form.action = "${pageContext.request.contextPath}/user/addUser2";
        //form.action = "${pageContext.request.contextPath}/user/addUser3";
        form.method = "post";
        form.submit();
    }
</script>

</head>
<body>
<form>
账号:<input type="text" name="userName">
密码:<input type="password" name="password">
<input type="button" value="提交" onclick="addUser()">
</form>
</body>
</html>

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;
    }

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

    public String getPassword() {
        return password;
    }

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

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>

<html lang="en">
<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>
账号:<input type="text" name="userName">
密码: <input type="password" name="password">
<input type="button" value="提交" onclick="addUser()">
</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>
<html lang="en">
<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">
 账号:<input type="text" id="userName" name="userName">
 密码:<input type="password" id="password" name="password">
<input type="button" id="button_submit" value="提交">
</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";
    }