[英]Play Framework 2.1 Cannot handle JSON POST request from controller
I am trying to achieve something simple, using play framework 2.1 (java): 我正在尝试使用播放框架2.1(java)实现一些简单操作:
Post JSON data via jquery, and retrieve it from a controller. 通过jquery发布JSON数据,然后从控制器中检索它。
Could you kindly tell me where I am wrong? 您能告诉我我哪里错了吗?
It starts from a javascript call: 它从javascript调用开始:
var object = new Object();
object.title = "Hamlet";
object.author = "Bill";
var jsonData = JSON.parse(JSON.stringify(object));
jsRoutes.controllers.Application.update().ajax({
type : 'POST',
dataType : 'json',
data : jsonData,
success : function(data) {
// I get the success
},
error : function(data) {
alert('error');
}
});
The data seems to be correctly posted: Firebug console: 数据似乎已正确发布:Firebug控制台:
Headers: 标头:
Response Headers
Content-Length 2
Content-Type text/plain; charset=utf-8
Request Headers
Accept application/json, text/javascript, */*; q=0.01
Accept-Encoding gzip, deflate
... Parameters ...参数
Parametersapplication/x-www-form-urlencoded
title Hamlet
author Bill
Source
title=Hamlet&Author=Bill
It routes here: 它在这里路由:
POST /update controllers.Application.update()
Here is the Application Controller: 这是应用程序控制器:
@BodyParser.Of(BodyParser.Json.class)
public static Result update() {
JsonNode json = request().body().asJson();
if(json == null){
return badRequest("empty json"); // PROBLEM: THE JSON IS ALWAYS NULL
}
return ok("{}");
}
And the problem I get is I cannot retrieve my parameters from the request. 我得到的问题是我无法从请求中检索参数。 the request() seems empty if i print it :
如果我打印出request()似乎是空的:
DefaultRequestBody(None,None,None,None,None,None,true)
Do you see where I am wrong? 看到我错了吗? How could I get the JSON right?
我如何正确获取JSON?
Thanks in advance 提前致谢
I had exactly the same issue. 我有完全一样的问题。 Besides the
dataType
, you have to set contentType
as well, as the original poster suggested: 除了
dataType
,还必须设置contentType
,如原始发布者建议的那样:
var jsonMsg = JSON.stringify(msg);
jsRoutes.controllers.Application.sendJson().ajax({
type : 'POST',
dataType : 'json',
contentType : 'application/json; charset=utf-8',
data : jsonMsg
});
这可以帮助您本示例演示如何逐步实现Ajax播放播放2.x:如何使用通用按钮发出AJAX请求
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