Grails：request.JSON来自哪里，如何使用jQuery的.ajax（）或.post（）把东西放在那里？ [英] Grails: where does request.JSON come from, and how do I put things there with jQuery's .ajax() or .post()?

问题描述

我有一个控制器，需要一些json在？请求正文，并做了很棒的事情：

 code> def myController（）{
 def myAction（）{
 println这里是request.JSON：$ {request.JSON as JSON}
 println $ params
 //使用request.JSON只做
 return 
} 
} 
  

所以我可以这样使用cURL：

  curl -i -H content-type：application / json-d{\someVariable\：\Absolutely\}
  

我的grails控制器打印：

 这里是request.JSON：{someVariable： Absolutely} 
这里是params：[controller：'myController'，action：'myAction'] 
  

$ b b

到目前为止这么好，但是当我尝试用jQuery做这个时，它进入params !!!

阅读了这两个问题：
使用jQuery将POST主体设置为JSON对象

jQuery在请求主体中发布有效的json

我最好的猜测是如何编写.js：

  var sendMe = {someVariable：Absolutely} 
 $ .ajax（{
 url：'/ myController / myAction'，
类型：'POST'，
 processData：false，
 data：JSON.stringify（sendMe），
 dataType：'json'，
 success：function（data）{
 
}，
错误：function（request，status，error）{
 
} 
}）; 
  

但是当我这样做时，我的控制器打印：

 这里是request.JSON：{} 
这里是params：[{someVariable：绝对} :, controller：'myController'，action：'myAction '] 
  

我必须在jQuery上做错事。

UPDATE：看起来像这个白痴实际上有同样的问题：如何获得JSON在grails 2.0 ，但不是面对jQuery问题，他只是使用cURL和reqeust.JSON的东西。一个懒惰的家伙。

解决方案

我几天前也有同样的麻烦。

对我来说 - 解决方案是使用 jQuery.ajaxSetup 来设置ajax内容类型的默认值。

  $（function（）{
 $ .ajaxSetup（{
 contentType：application / json; charset = utf-8
 }）; 
} 
  

使用 $。 ajax 或 $。post 将JSON传输到控制器，并使用它：

  def yourJSON = request.JSON 
  

t知道为什么 $。ajax 和 $。post 中的'contentType'选项在我的测试期间被忽略。 p>

I have a controller that takes some json in the ?request body? and does awesome things with it:

def myController(){
  def myAction(){
    println "Here is request.JSON: ${request.JSON as JSON}"
    println "Here is params: $params"
    //do awesome stuff with request.JSON only
    return
  }
}

So I can hit this with cURL like so:

curl -i -H "content-type: application/json" -d "{\"someVariable\":\"Absolutely\"}"

And my grails controller prints:

Here is request.JSON: {"someVariable":"Absolutely"}
Here is params: [controller:'myController', action:'myAction']

So far so good, but when I try to do this with jQuery it goes in params!!!

Having read these two questions: Setting the POST-body to a JSON object with jQuery

jQuery posting valid json in request body

My best guess for how to write the .js is:

var sendMe = {"someVariable":"Absolutely"}
$.ajax({
  url: '/myController/myAction',
  type: 'POST',
  processData: false,
  data: JSON.stringify(sendMe),
  dataType: 'json',
  success: function(data) {

  },
  error: function(request, status, error) {

  }                     
});

But when I do this my controller prints:

Here is request.JSON: {}
Here is params: [{"someVariable":"Absolutely"}:, controller:'myController', action:'myAction']

I must be doing something wrong with jQuery.

UPDATE: looks like this idiot was actually having the same problem: How to get at JSON in grails 2.0 but instead of confronting the jQuery issue he just used cURL and the reqeust.JSON thing. What a lazy guy.

解决方案

I have the same trouble like you few days ago.

For me - the solution was to use jQuery.ajaxSetup to set the default value for ajax content type.

$(function() {
    $.ajaxSetup({
        contentType: "application/json; charset=utf-8"
    });
}

With this you could use $.ajax or $.post to transfer your JSON to the controller and use it like that:

def yourJSON = request.JSON

I dont't know why the 'contentType' option within $.ajax and $.post was ignored during my tests.

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