$ .ajax函数的成功处理程序，带有非标准的http状态代码

We've written a RESTful server API. For whatever reason, we made the decision that for DELETEs, we would like to return a 204 (No Content) status code, with an empty response. I'm trying to call this from jQuery, passing in a success handler and setting the verb to DELETE:

我们编写了一个RESTful服务器API。无论出于何种原因，我们决定对于DELETE，我们希望返回204（无内容）状态代码，其响应为空。我试图从jQuery调用它，传入成功处理程序并将动词设置为DELETE：

jQuery.ajax({
    type:'DELETE',
    url: url,
    success: callback,
});

The server returns a 204, but the success handler is never called. Is there a way I can configure jQuery to allow 204s to fire the success handler?

服务器返回204，但永远不会调用成功处理程序。有没有办法配置jQuery以允许204s触发成功处理程序？

5 个解决方案

#1

204 should be treated as success. What version of jQuery are you using? I did a couple of tests and all 200 range status codes went to the success handler. The source for jQuery 1.4.2 confirms this:

204应被视为成功。你使用的是什么版本的jQuery？我做了几个测试，所有200个范围的状态代码都转到了成功处理程序。 jQuery 1.4.2的源代码证实了这一点：

// Determines if an XMLHttpRequest was successful or not
httpSuccess: function( xhr ) {
    try {
        // IE error sometimes returns 1223 when 
        // it should be 204 so treat it as success, see #1450
        return !xhr.status && location.protocol === "file:" ||
            // Opera returns 0 when status is 304
            ( xhr.status >= 200 && xhr.status < 300 ) ||
            xhr.status === 304 || xhr.status === 1223 || xhr.status === 0;
    } catch(e) {}

    return false;
},

#2

I had a simliar issue because my script was also sending the "Content-Type" header as "application/json". While the request succeeded, it couldn't JSON.parse an empty string.

我有一个simliar问题，因为我的脚本也将“Content-Type”标题发送为“application / json”。当请求成功时，它无法JSON.parse一个空字符串。

#3

jQuery.ajax({
    ...
    error: function(xhr, errorText) {
        if(xhr.status==204) successCallback(null, errorText, xhr);
        ...
    },
    ...
});

ugly...but might help

丑陋......但可能有所帮助

#4

It's technically a problem on your server
Like Paul said, an an empty 204 response with a server content-type of json is treated by jQuery as an error.

You can get around it in jQuery by manually overriding dataType to 'text'.

从技术上讲，它在你的服务器上是一个问题就像保罗所说的那样，jQuery将一个带有服务器内容类型json的空204响应视为错误。你可以通过手动覆盖dataType到'text'来解决它在jQuery中的问题。

$.ajax({
    url: url,
    dataType:'text',
    success:(data){
       //I will now fire on 204 status with empty content
       //I have beaten the machine.
    }
});

#5

This is alternative way to callback on success... I think that will work for you.

这是成功回调的另一种方式......我认为这对你有用。

$.ajax({
    url: url,
    dataType:'text',
    statusCode: {
                204: function (data) {
                   logic here
                }
});

#1