向服务器发送json数据的方法汇总

1 AFNetworking3.0如何post一个json数据到服务器

 NSDictionary *dic = @{@"username":self.registerPhoneField.text,@"phone":self.registerPhoneField.text,@"psw":self.registerPasswordField.text};
// 初始化Manager
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

// 不加上这句话，会报“Request failed: unacceptable content-type: text/plain”错误，因为我们要获取text/plain类型数据
manager.responseSerializer = [AFHTTPResponseSerializer serializer];


[manager POST:@"http://10.1.130.77/login/submit" parameters:dic progress:^(NSProgress * _Nonnull downloadProgress) {
    // 这里可以获取到目前的数据请求的进度
} success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
    // 请求成功，解析数据
    NSLog(@"%@", responseObject);
    NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableContainers | NSJSONReadingMutableLeaves error:nil];
    
    NSLog(@"%@", dic);
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
    // 请求失败
    NSLog(@"%@", [error localizedDescription]);
}];

丰富版 加入了json转化代码

NSDictionary *dic = @{@"username":self.loginPhoneFiled.text,@"phone":self.loginPhoneFiled.text,@"psw":self.loginPasswordField.text};

// 初始化Manager
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

// 不加上这句话，会报“Request failed: unacceptable content-type: text/plain”错误，因为我们要获取text/plain类型数据
manager.responseSerializer = [AFJSONResponseSerializer serializer];
manager.requestSerializer =[AFJSONRequestSerializer serializer];

manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];

[manager.requestSerializer setValue:@"application/json"forHTTPHeaderField:@"Accept"];
[manager.requestSerializer setValue:@"application/json;charset=utf-8"forHTTPHeaderField:@"Content-Type"];


NSData *data = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:nil];
request.HTTPBody = data;
// post请求
[manager POST:@"http://10.1.130.77:8080/login/submit.do" parameters:dic constructingBodyWithBlock:^(id  _Nonnull formData) {
    // 拼接data到请求体，这个block的参数是遵守AFMultipartFormData协议的。
    
} progress:^(NSProgress * _Nonnull uploadProgress) {
    // 这里可以获取到目前的数据请求的进度
    
} success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
    
    // 请求成功，解析数据
    NSLog(@"%@", responseObject);
    
    NSDictionary *dic1 = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableContainers |         NSJSONReadingMutableLeaves error:nil];
    
    NSLog(@"%@", dic1);
    
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
    
    // 请求失败
    NSLog(@"%@", [error localizedDescription]);
}];

2 AFNetworking2.0如何post一个json数据到服务器

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
//申明返回的结果是json类型
manager.responseSerializer = [AFJSONResponseSerializer serializer];
//申明请求的数据是json类型
manager.requestSerializer=[AFJSONRequestSerializer serializer];
//如果报接受类型不一致请替换一致text/html或别的
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];
//传入的参数
NSDictionary *parameters = @{@"1":@"XXXX",@"2":@"XXXX",@"3":@"XXXXX"};
//你的接口地址
NSString *url=@"http://xxxxx";
//发送请求
[manager POST:url parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

3 NSURLConnection

      // 1.创建请求
     NSURL *url = [NSURL URLWithString:@"http://10.1.130.77:8080/login/submit.do"];
     NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
     request.HTTPMethod = @"POST";

     // 2.设置请求头
     [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];

     // 3.设置请求体
     NSDictionary *json = @{
                                                          @"username" : self.loginPhoneFiled.text,
                                                          @"phone" : self.loginPasswordField.text,
                                                          @"psw" : self.loginPhoneFiled.text
                                                          };

 //    NSData --> NSDictionary
     // NSDictionary --> NSData
     NSData *data = [NSJSONSerialization dataWithJSONObject:json options:NSJSONWritingPrettyPrinted error:nil];
     request.HTTPBody = data;

     // 4.发送请求
     [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
          
         }];

4ASIHTTPRequest提交JSON数据

            NSDictionary *user = [[NSDictionary alloc] initWithObjectsAndKeys:@"0", @"Version", nil];
            if ([NSJSONSerialization isValidJSONObject:user])
            {
                NSError *error;
                NSData *jsonData = [NSJSONSerialization dataWithJSONObject:user options:NSJSONWritingPrettyPrinted error: &error];
                NSMutableData *tempJsonData = [NSMutableData dataWithData:jsonData];
                //NSLog(@"Register JSON:%@",[[NSString alloc] initWithData:tempJsonData encoding:NSUTF8StringEncoding]);
                
                NSURL *url = [NSURL URLWithString:@"http://42.96.140.61/lev_version.php"];
                ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
                [request addRequestHeader:@"Content-Type" value:@"application/json; encoding=utf-8"];
                [request addRequestHeader:@"Accept" value:@"application/json"];
                [request setRequestMethod:@"POST"];
                [request setPostBody:tempJsonData];
                [request startSynchronous];
                NSError *error1 = [request error];
                if (!error1) {
                    NSString *response = [request responseString];
                    NSLog(@"Test：%@",response);
                }
            }