如果responseType为arraybuffer，如何从$ http读取JSON错误响应 [英] How to read JSON error response from $http if responseType is arraybuffer

问题描述

我使用

$http.post(url, data, { responseType: "arraybuffer" }).success(
            function (data) { /*  */ });

如果发生错误，服务器将以类似JSON对象的错误响应

In case of an error, the server responds with an error JSON object like

{ "message" : "something went wrong!" }

除了成功响应以外，还有什么方法可以得到错误响应?

Is there any way to get the error response in a different type than a success response?

$http.post(url, data, { responseType: "arraybuffer" })
  .success(function (data) { /*  */ })
  .error(function (data) { /* how to access data.message ??? */ })

推荐答案

正如@Paul LeBeau指出的那样，我的答案假设响应是ASCII编码的.

As @Paul LeBeau points out, my answer assumes that the response is ASCII encoded.

基本上，您只需要将ArrayBuffer解码为字符串并使用JSON.parse().

Basically you just need to decode the ArrayBuffer into a string and use JSON.parse().

var decodedString = String.fromCharCode.apply(null, new Uint8Array(data));
var obj = JSON.parse(decodedString);
var message = obj['message'];

我在IE11和更高版本中进行了测试Chrome，效果很好.

I ran tests in IE11 & Chrome and this works just fine.

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