使用 AFNetworking 2.0 发布 JSON 数据

Question

我有一个网络脚本，它通过 HTTP POST 请求接受 JSON 字符串作为输入。 我遇到了几个相同的 AFNetworking 1.x 示例，任何人都可以指点我或给 AFNetworking 2.0 示例以对带有格式 JSON 作为输入的 Web 脚本执行 HTTP POST 请求吗？

谢谢

Answer 1

迅速：

将此添加到manager.AFHTTPRequestOperationManager

manager.requestSerializer = AFJSONRequestSerializer(writingOptions: NSJSONWritingOptions.PrettyPrinted)

Answer 2

如果要发布参数字典 json 字符串，请使用以下代码

NSMutableURLRequest * urlRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"your_webservice_post_url"]];
[urlRequest setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[urlRequest setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
NSError *error;
NSDictionary *parameters = @{@"customValue":@"value"};
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:parameters options:NSJSONWritingPrettyPrinted error:&error];
 [urlRequest setHTTPMethod:@"POST"];
 [urlRequest setHTTPBody:jsonData];

Answer 3

这里是一些以 JSON 格式存储在 NSMutableDictionary 参数中的 POST 参数的简单模板。适用于 AFNetworking 2.4.1。

NSString *baseURL = @"http://your-server.com/";
NSString *path = @"method/url/";

NSMutableDictionary *parameters = [NSMutableDictionary dictionary];
[parameters setObject:@"value" forKey:@"key"];

AFHTTPSessionManager *manager = [[AFHTTPSessionManager alloc] initWithBaseURL:baseURL];
manager.requestSerializer = [AFJSONRequestSerializer serializer];
manager.responseSerializer = [AFJSONResponseSerializer serializer];

[manager POST:path parameters:parameters success:^(NSURLSessionDataTask *task, id responseObject) {

        NSLog(@"JSON: %@", responseObject);
        //here is place for code executed in success case

} failure:^(NSURLSessionDataTask *task, NSError *error) {

        //here is place for code executed in error case
        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Error while sending POST"
                                                            message:@"Sorry, try again."
                                                           delegate:nil
                                                  cancelButtonTitle:@"Ok"
                                                  otherButtonTitles:nil];
        [alertView show];

        NSLog(@"Error: %@", [error localizedDescription]);
}];

Answer 4

如果你想将json发布到服务器，你应该在下面使用这种方式发布你的参数。

使用这种方式，你可以发现你的请求头中的“Content-Type”是“application/json”。

AFJSONRequestSerializer *serializer = [AFJSONRequestSerializer serializer];
[serializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[serializer setValue:@"application/json" forHTTPHeaderField:@"Accept"];
manager.requestSerializer = serializer;

 NSDictionary *paras = @{@"uid" : @(10020)};

[manager POST:@"http://your.request.url" parameters:paras success:^(AFHTTPRequestOperation *operation, id responseObject) {



}failure:^(AFHTTPRequestOperation *operation, NSError *error) {

    NSLog(@"the falire is %@", error);

}];

希望对您有所帮助。 :)

Answer 5

在搜索文档并尝试了一些代码后，我得到了以下示例

 AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.requestSerializer = [AFJSONRequestSerializer serializer];


NSDictionary *params = @ {@"user" :txtUserName, @"pwd" :txtPwd };


[manager POST:URL_SIGNIN parameters:params
success:^(AFHTTPRequestOperation *operation, id responseObject)
{
    NSLog(@"JSON: %@", responseObject);
}
failure:
 ^(AFHTTPRequestOperation *operation, NSError *error) {
     NSLog(@"Error: %@", error);
 }];

另外不要忘记在服务器脚本中将响应头类型设置为 Application/json。