1 // 2 //  ViewController.m 3 //  PostJsonDemo 4 // 5 //  Created by hellovoidworld on 15/1/28. 6 //  Copyright (c) 2015年 hellovoidworld. All rights reserved. 7 // 8  9 #import "ViewController.h"10 11 @interface ViewController ()12 - (IBAction)postJson;13 14 @end15 16 @implementation ViewController17 18 - (void)viewDidLoad {19     [super viewDidLoad];20     // Do any additional setup after loading the view, typically from a nib.21 }22 23 - (IBAction)postJson {24     // 1.创建请求25     NSURL *url = [NSURL URLWithString:@"http://192.168.0.21:8080/MyTestServer/acceptJson"];26     NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];27     // 设置post发送28     request.HTTPMethod = @"POST";29    30     // 2.设置请求头31     [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];32    33     // 3.设置请求体34     NSDictionary *json = @{@"name":@"tom",35                            @"age":@"21"};36     request.HTTPBody = [NSJSONSerialization dataWithJSONObject:json options:NSJSONWritingPrettyPrinted error:nil];37    38    39     // 4.发送请求40     [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {41         NSLog(@"%@", [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil]);42     }];43    44 }45 @end