GET方法解析JSON数据，使用NSJSONSerialization
1 NSString *appkey = @"bf1d95bd730f031fb019ba80ffabb89d"; 2 NSString *baseURL = @"http://op.juhe.cn/onebox/weather/query"; 3 NSString *url = [baseURL stringByAppendingString:[NSString stringWithFormat:@"?cityname=%@&dtype=&key=%@", @"上海", appkey]]; 4 NSString *urlStr = [url stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]]; 5 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlStr]]; 6 request.HTTPMethod =@"GET"; 7 request.timeoutInterval = 20; 8 request.cachePolicy = NSURLRequestReturnCacheDataElseLoad; 9 10 NSURLSession *session = [NSURLSession sharedSession]; 11 NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) { 12 NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil]; 13 NSLog(@"%@", [dict allKeys]); 14 }]; 15 [task resume];
POST方法解析JSON数据，使用NSJSONSerialization，其他参数和之前一样
1 //设置请求体 2 NSString *bodyStr = [NSString stringWithFormat:@"cityname=%@&dtype=&key=%@", @"上海", appkey]; 3 NSString *body = [bodyStr stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]]; 4 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:baseURL]]; 5 request.HTTPBody = [body dataUsingEncoding:NSUTF8StringEncoding]; 6 request.HTTPMethod =@"POST"; 7 request.timeoutInterval = 20; 8 request.cachePolicy = NSURLRequestReturnCacheDataElseLoad; 9 10 NSURLSession *session = [NSURLSession sharedSession]; 11 NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) { 12 NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil]; 13 NSLog(@"%@", [dict allKeys]); 14 }]; 15 [task resume];