将JSON数据发送到服务器错误 [英] Sending JSON Data to Server Error

问题描述

我想将JSON数据发送到控制器的POST处理程序.我是在客户端这样做的:

I want to sent a JSON data to my controller's POST handler. I do that at my client side:

var userName = $('#userName').val();
var password = $('#password').val();
var mail = $('#mail').val();
var admin =$("#admin").is(':checked');
var user = {userName: userName, password: password, mail: mail, admin:admin};

$.ajax({
   async : false,
   type:'POST',
   url: '/uxiy/webapp/uxmer',
   data: user,
   dataType: 'json',
   success: function(data) {
       ...
   },
   error: function(data) {
       ...
   }
});

我的Spring控制器如下:

My Spring controller as follows:

@RequestMapping(method = RequestMethod.POST)
public void createUser(HttpServletResponse response, @RequestBody User user) {
    user.setName("POST worked");
    //todo If error occurs response.sendError(HttpServletResponse.SC_NOT_FOUND);
    response.setStatus(HttpServletResponse.SC_OK);
}

但是，当我发送数据时，在Firebug上出现了该错误:

However when I send my data I get that error at Firebug:

"NetworkError:415不支持的媒体类型"

"NetworkError: 415 Unsupported Media Type"

怎么了?

PS: Firebug POST详细信息的示例:

PS: An example of Firebug POST details:

Parameters  application/x-www-form-urlencoded
admin   true
mail    [e-mail]
password    r
userName    userx
Source
userName=userx&password=r&mail=user%40user.com&admin=true

PS2: 在我添加

contentType: 'application/json',

它开始给予

"NetworkError: 400 Bad Request" 

可能是什么问题，进行序列化等?

What can be the problem, making serialization, etc?

PS3: 此处: http://blog.springsource. com/2010/01/25/ajax-simplifications-in-spring-3-0/它说:

如果存在验证错误，则会返回HTTP 400和 错误消息，否则返回HTTP 200.

If there are validation errors, a HTTP 400 is returned with the error messages, otherwise a HTTP 200 is returned.

我遇到400错误的请求错误.也许问题与此有关?

I have 400 Bad Request Error. Maybe the problem is related to that?

推荐答案

问题与JSON数组有关.这不是从客户端发送到服务器的有效JSON字符串.

Problem was about the JSON array. It was not a valid JSON string that was sent from client to server.

---

编辑

为了澄清这一点，我偶然发现了这篇文章.需要在Ajax请求中执行正确的JSON.stringify(data).奇怪，但是在设置相应的dataType时.ajax函数无法完成.

To clarify this, I stumbled upon this post. It is required to do a proper JSON.stringify(data) in the Ajax request. It's strange but it's not done by the .ajax function when setting the corresponding dataType.

$.ajax({
    async : false,
    type:'POST',
    url: '/uxiy/webapp/uxmer',
    data: JSON.stringify(user),
    dataType: 'json',
    success: function(data) {
        ...
    },
    error: function(data) {
        ...
    }
});

这篇关于将JSON数据发送到服务器错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！