AFNetworking预期的内容类型错误

Question

我在失败块中获取json字符串

 NSURL *url = [[NSURL alloc] initWithString:@"http://www.vinipost.com/Services/Update/UpdateService.asmx/GetPropSubType?"];
        NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url];
        [AFJSONRequestOperation addAcceptableContentTypes:[NSSet setWithObject:@"text/html"]];

        AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) {

            NSLog(@"%@", JSON);
        } failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) {
            NSLog(@"Request Failed with Error: %@, %@", error, error.userInfo);
        }];
        [operation start];

输出:

Request Failed with Error: Error Domain=AFNetworkingErrorDomain Code=-1016 "Expected content type {(
    "text/json",
    "text/javascript",
    "application/json",
    "text/html"
)}, got text/plain" UserInfo=0x71521a0 {NSLocalizedRecoverySuggestion=[{"PropTypId":1,"PropCatId":1,"PropTyp":"Flat/ Condo"}.......**

Answer 1

您需要在操作前添加此行

[AFJSONRequestOperation addAcceptableContentTypes:
                            [NSSet setWithObject:@"text/plain"]];

Answer 2

错误很明显:Web服务返回错误的内容类型.内容类型应为以下之一:

"text/json","text/javascript","application/json","text/html"

但它回来了

纯文本/

此外,如果您查看http响应,它会在其中返回HTML TAGS,因此AFNetworking无法解析.

如果这个页面:

http://www.vinipost.com/Services/Update/UpdateService.asmx/GetPropSubType?

在您的控制之下,纠正删除html标签和更改内容类型的行为