带有 JSON 主体的 POST 请求 AFNetworking 2.0答案

【问题标题】：POST request with JSON body AFNetworking 2.0带有 JSON 主体的 POST 请求 AFNetworking 2.0
【发布时间】：2015-02-07 00:17:32
【问题描述】：

是否可以使用 AFNetworking ~> 2.0 发送带有 JSON 正文的 POST 请求？

我尝试过使用：
manager.requestSerializer = [AFJSONRequestSerializer serializer]; manager POST:<url> parameters: @{@"data":@"value"} success: <block> failure: <block>'

但它不起作用。任何帮助是极大的赞赏。谢谢

【问题讨论】：

标签： ios objective-c afnetworking afnetworking-2

【解决方案1】：

您可以在 NSMutableURLRequest 中添加 JSON 正文，而不是直接在 parameters: 中。查看我的示例代码：

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
// Set post method
[request setHTTPMethod:@"POST"];
// Set header to accept JSON request
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
// Your params
NSDictionary *params = @{@"data":@"value"};
// Change your 'params' dictionary to JSON string to set it into HTTP
// body. Dictionary type will be not understanding by request.
NSString *jsonString = [self getJSONStringWithDictionary:params];

// And finally, add it to HTTP body and job done.
[request setHTTPBody:[jsonString dataUsingEncoding:NSUTF8StringEncoding]];

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.requestSerializer = [AFJSONRequestSerializer serializer];
AFHTTPRequestOperation *operation = [manager HTTPRequestOperationWithRequest:request success:<block> failure:<block>];

希望这会对您有所帮助。快乐编码！ :)

【讨论】：

【解决方案2】：

如果有人在寻找 AFNetworking 3.0，这里是代码

NSError *writeError = nil;

NSData* jsonData = [NSJSONSerialization dataWithJSONObject:params options:NSJSONWritingPrettyPrinted error:&writeError];
NSString* jsonString = [[NSString alloc]initWithData:jsonData encoding:NSUTF8StringEncoding];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url] cachePolicy:NSURLRequestReloadIgnoringCacheData  timeoutInterval:120];

[request setHTTPMethod:@"POST"];
[request setValue: @"application/json; encoding=utf-8" forHTTPHeaderField:@"Content-Type"];
[request setValue: @"application/json" forHTTPHeaderField:@"Accept"];
[request setHTTPBody: [jsonString dataUsingEncoding:NSUTF8StringEncoding]];

AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];

[[manager dataTaskWithRequest:request uploadProgress:nil downloadProgress:nil completionHandler:^(NSURLResponse * _Nonnull response, id  _Nullable responseObject, NSError * _Nullable error) {

    if (!error) {
        NSLog(@"Reply JSON: %@", responseObject);

        if ([responseObject isKindOfClass:[NSDictionary class]]) {
            //blah blah
        }
    } else {

        NSLog(@"Error: %@", error);
        NSLog(@"Response: %@",response);
        NSLog(@"Response Object: %@",responseObject);

    }
}] resume];

【讨论】：