AFNetworking 2.0:NSLocalizedDescription =请求失败:不可接受的内容类型:text/html [英] AFNetworking 2.0: NSLocalizedDescription=Request failed: unacceptable content-type: text/html

问题描述

我试图从Apple主页上获取 html.

I tried to GET html from Apple homepage.

AFHTTPRequestOperationManager *manager
= [AFHTTPRequestOperationManager manager];
[manager GET:@"http://www.apple.com/jp" parameters:nil
     success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"HTML: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

此操作失败，并显示以下错误消息:

This failed with error message as below:

2014-02-07 14:54:22.922 Tests[1833:70b] Error: Error Domain=AFNetworkingErrorDomain Code=-1016 "Request failed: unacceptable content-type: text/html" UserInfo=0x8a32650 {NSErrorFailingURLKey=http://www.apple.com/jp/, AFNetworkingOperationFailingURLResponseErrorKey=<NSHTTPURLResponse: 0xea2e1a0> { URL: http://www.apple.com/jp/ } { status code: 200, headers {
    "Accept-Ranges" = bytes;
    "Cache-Control" = "max-age=237";
    Connection = "keep-alive";
    "Content-Encoding" = gzip;
    "Content-Length" = 4402;
    "Content-Type" = "text/html; charset=UTF-8";
    Date = "Fri, 07 Feb 2014 05:52:51 GMT";
    Expires = "Fri, 07 Feb 2014 05:56:48 GMT";
    Server = Apache;
    Vary = "Accept-Encoding";
    Via = "1.0 proxy1.screen.co.jp (squid)";
    "X-Cache" = "MISS from proxy1.screen.co.jp";
    "X-Cache-Lookup" = "HIT from proxy1.screen.co.jp:8080";
} }, NSLocalizedDescription=Request failed: unacceptable content-type: text/html}

我找到了消息Request failed: unacceptable content-type: text/html，所以我知道我必须让text/html可以接受.然后，我添加了以下行:manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];.

I found the message Request failed: unacceptable content-type: text/html so I understand I have to let text/html acceptable. Then, I added the line: manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];.

AFHTTPRequestOperationManager *manager 
= [AFHTTPRequestOperationManager manager];
manager.responseSerializer.acceptableContentTypes
= [NSSet setWithObject:@"text/html"]; // ###### ADDED LINE ######
[manager GET:@"http://www.apple.com/jp" parameters:nil
     success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"HTML: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

但这也失败了.

2014-02-07 14:55:48.927 Tests[1873:70b]
Error: Error Domain=NSCocoaErrorDomain Code=3840
"The operation couldn’t be completed. (Cocoa error 3840.)"
(JSON text did not start with
array or object and option to allow fragments not set.)
UserInfo=0xfa7b870 {NSDebugDescription=
JSON text did not start with
array or object and option to allow fragments not set.}

谢谢您的帮助.

推荐答案

问题是AFHTTPRequestOperationManager默认为AFJSONResponseSerializer的responseSerializer.通过更改acceptableContentTypes，您可以更改将接受的内容类型，但不会更改AFJSONResponseSerializer仍会在响应中寻找JSON的事实.

The problem is that AFHTTPRequestOperationManager defaults to a responseSerializer of AFJSONResponseSerializer. By changing acceptableContentTypes, you are changing which content types will be accepted, but you're not changing the fact that AFJSONResponseSerializer will still look for JSON in the response.

您可能只想将responseSerializer设置为AFHTTPResponseSerializer，以便它不再尝试解析JSON(并将自动接受text/html):

You might want to just set the responseSerializer to AFHTTPResponseSerializer, so that it will no longer try to parse the JSON (and will automatically accept text/html):

manager.responseSerializer = [AFHTTPResponseSerializer serializer];

这篇关于AFNetworking 2.0:NSLocalizedDescription =请求失败:不可接受的内容类型:text/html的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！