弃用的异步get和post方法之代理方法

  1 #import "ViewController.h"
  2 #import "Header.h"
  3 
  4 @interface ViewController () <NSURLConnectionDataDelegate>
  5 
  6 /**
  7  *  用来存储数据
  8  */
  9 @property (nonatomic, strong) NSMutableData *resultData;
 10 
 11 @property (nonatomic, strong) NSMutableArray *dataArray;
 12 
 13 @end
 14 
 15 @implementation ViewController
 16 
 17 // 懒加载
 18 - (NSMutableArray *)dataArray {
 19     
 20     if (!_dataArray) {
 21         _dataArray = [NSMutableArray array];
 22     }
 23     return _dataArray;
 24 }
 25 
 26 
 27 - (void)viewDidLoad {
 28     [super viewDidLoad];
 29     // Do any additional setup after loading the view, typically from a nib.
 30 }
 31 
 32 #pragma mark - get异步请求
 33 - (IBAction)getAsynchronousRequset:(UIButton *)sender {
 34     
 35     // 1.创建url
 36     NSURL *url = [NSURL URLWithString:GET_URL];
 37     
 38     
 39     // 2.创建请求
 40     NSURLRequest *request = [NSURLRequest requestWithURL:url];
 41       
 42     // 使用delegate实现
 43     [NSURLConnection connectionWithRequest:request delegate:self];
 44     
 45 }
 46 
 47 
 48 #pragma mark - 代理方法
 49 - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
 50     
 51     // 初始化数据
 52     self.resultData = [NSMutableData data];
 53     
 54 }
 55 
 56 // 开始接收数据(这个方法会重复执行，得到的每段数据拼接在一起就可以了)
 57 - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
 58     
 59     [self.resultData appendData:data];
 60 }
 61 
 62 // 结束服务器
 63 - (void)connectionDidFinishLoading:(NSURLConnection *)connection {
 64     
 65     // 进行数据解析
 66     NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:self.resultData options:NSJSONReadingAllowFragments error:nil];
 67     NSLog(@"%@", dic);
 68 }
 69 
 70 
 71 
 72 #pragma mark - post异步请求
 73 - (IBAction)postAsynchronousRequset:(UIButton *)sender {
 74     
 75     // 1.创建url
 76     NSURL *url = [NSURL URLWithString:POST_URL];
 77     
 78     
 79     // 2.创建请求
 80     NSMutableURLRequest *mutableRequest = [NSMutableURLRequest requestWithURL:url];
 81     
 82     
 83     // 2.5.设置body
 84     // 创建一个连接字符串（这个内容在以后的开发中接口文档都有标注）
 85     NSString *dataStr = POST_BODY;
 86     
 87     // 对连接字符串进行编码【这一步千万不能忘记】
 88     NSData *postData = [dataStr dataUsingEncoding:NSUTF8StringEncoding];
 89     
 90     // 设置请求格式为post请求【在这里POST必须大写】
 91     [mutableRequest setHTTPMethod:@"POST"];
 92     
 93     // 设置请求体（body）
 94     [mutableRequest setHTTPBody:postData];
 95     
 96     // 代理方法
 97     [NSURLConnection connectionWithRequest:mutableRequest delegate:self];
 98 }
 99 
100 
101 #pragma mark - 代理方法
102 - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
103     
104     // 初始化数据
105     self.resultData = [NSMutableData data];
106     
107 }
108 
109 // 开始接收数据(这个方法会重复执行，得到的每段数据拼接在一起就可以了)
110 - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
111     
112     [self.resultData appendData:data];
113 }
114 
115 // 结束服务器
116 - (void)connectionDidFinishLoading:(NSURLConnection *)connection {
117     
118     // 进行数据解析
119     NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:self.resultData options:NSJSONReadingAllowFragments error:nil];
120     NSLog(@"%@", dic);
121 }
122 
123 @end