Rails后端未正確接收具有JSON有效負載的Crossrider Ajax發布請求

Question

我有一個要發布到遠程服務器（Rails）的JSON對象。 將POST參數轉換為url編碼的字符串后，所有嘗試以“ application / json”形式將其發送到服務器都會失敗。 例如：

appAPI.request.post({
  url: "http://mybackend",
  postData: {hello: 'world', foo: 'bar'},
  onSuccess: function(response) {
    console.log("postback succeeded with response: " + response)
  },
  onFailure: function(httpCode) {
    console.log("postback failure: " + httpCode)
  },
  contentType: 'application/json'
});

當服務器從格式錯誤的JSON對象抱怨時返回HTTP 500：

Error occurred while parsing request parameters.
Contents:

MultiJson::LoadError (784: unexpected token at 'hello=world&foo=bar'): 
  /Users/hammady/.rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/json/common.rb:148:in `parse'
  ...

我還應該怎么做才能將JSON對象發送到我的Rails后端？

Answer 1

您需要先對對象進行字符串化。

postData: JSON.stringify({hello: 'world', foo: 'bar'});

Answer 2

使用JSON.stringify對發布的數據進行字符串化

appAPI.request.post({
  url: "http://mybackend",
  postData: JSON.stringify({hello: 'world', foo: 'bar'}),
  onSuccess: function(response) {
    console.log("postback succeeded with response: " + response)
  },
  onFailure: function(httpCode) {
    console.log("postback failure: " + httpCode)
  },
  contentType: 'application/json'
});