SpringMVC接收表单数据的方法
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SpringMVC接收表单数据的方法
demowu 发表于1年前
SpringMVC接收表单数据的方法
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表单的代码如下:

<%@ 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">
    //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>
        <table>
            <tr>
                <td>账号</td>
                <td>
                    <input type="text" name="userName">
                </td>
            </tr>
            <tr>
                <td>密码</td>
                <td>
                    <input type="password" name="password">
                </td>
            </tr>
            <tr>
                <td>&nbsp;</td>
                <td>
                    <input type="button" value="提交" onclick="addUser()">
                </td>
            </tr>
        </table>
    </form>
</body>
</html>

无注解方式:  

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 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>&nbsp;</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>&nbsp;</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";
    }

通过注解的方式:

 

1.@RequestParam

@RequestMapping(value = "/xxxx.do")  

public void create(@RequestParam(value="userName") String userName) throws Exception {  

     }  

2.@PathVariable

@RequestMapping(value="/{groupId}.do")  

public void detail(@PathVariable long groupId){  

 groupRepository.selectOne(groupId);  

}  


3.@ModelAttribute

@RequestMapping(value = "/xxxx.do")  

public String create(@ModelAttribute User user) throws Exception {  

userService.insert(user);  

return "redirect:/user/create.do";  }  


 

 

4.Request对象

public ModelAndView method1(HttpServletRequest request,  

         HttpServletResponse respnose) throws ServletException, IOException {  

    Map model = new HashMap();  

model.put("message","你调用的是方法");   

return new ModelAndView("/index.jsp", "model", model);  }  

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