1 #import "MainViewController.h"
2
3 @interface MainViewController ()<NSURLConnectionDataDelegate>
4
5 @property (nonatomic, retain)UIImageView *imageView;
6
7 @property (nonatomic, retain)NSMutableData *data;// 可变数据 Data 用于拼接每次接受来的数据块
8 @end
9
10 @implementation MainViewController
11
12 - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
13 {
14 self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
15 if (self) {
16 // Custom initialization
17 }
18 return self;
19 }
20
21 - (void)viewDidLoad
22 {
23 [super viewDidLoad];
24 // Do any additional setup after loading the view.
25 self.imageView = [[UIImageView alloc] initWithFrame:CGRectMake(20, 20, 280, 280)];
26 self.imageView.backgroundColor = [UIColor redColor];
27 [self.view addSubview:self.imageView];
28 [self.imageView release];
29
30 UIButton *button1 = [UIButton buttonWithType:UIButtonTypeSystem];
31 button1.frame = CGRectMake(20, 320, 120, 40);
32 button1.backgroundColor = [UIColor brownColor];
33 [button1 setTitle:@"同步 GET" forState:UIControlStateNormal];
34 [button1 addTarget:self action:@selector(buttonClicked1:) forControlEvents:UIControlEventTouchUpInside];
35 [self.view addSubview:button1];
36
37
38 UIButton *button2 = [UIButton buttonWithType:UIButtonTypeSystem];
39 button2.frame = CGRectMake(180, 320, 120, 40);
40 button2.backgroundColor = [UIColor brownColor];
41 [button2 setTitle:@"同步 POST" forState:UIControlStateNormal];
42 [button2 addTarget:self action:@selector(buttonClicked2:) forControlEvents:UIControlEventTouchUpInside];
43 [self.view addSubview:button2];
44
45
46 UIButton *button3 = [UIButton buttonWithType:UIButtonTypeSystem];
47 button3.frame = CGRectMake(20, 400, 120, 40);
48 button3.backgroundColor = [UIColor brownColor];
49 [button3 setTitle:@"异步 GET" forState:UIControlStateNormal];
50 [button3 addTarget:self action:@selector(buttonClicked3:) forControlEvents:UIControlEventTouchUpInside];
51 [self.view addSubview:button3];
52
53
54 UIButton *button4 = [UIButton buttonWithType:UIButtonTypeSystem];
55 button4.frame = CGRectMake(180, 400, 120, 40);
56 button4.backgroundColor = [UIColor brownColor];
57 [button4 setTitle:@"异步 POST" forState:UIControlStateNormal];
58 [button4 addTarget:self action:@selector(buttonClicked4:) forControlEvents:UIControlEventTouchUpInside];
59 [self.view addSubview:button4];
60
61 }
62
63 - (void)buttonClicked1:(UIButton *)button
64 {
65 // 同步GET
66 // 1.拼接网络地址
67 NSString *str = @"http://cdn.gq.com.tw.s3-ap-northeast-1.amazonaws.com/userfiles/images_A1/6954/2011100658141857.jpg"
68 ;
69 // 2.将地址转化为URL对象
70 NSURL *url = [NSURL URLWithString:str];
71
72 // 3. 创建一个请求（request）
73 // 参数1： 请求地址（NSURL）
74 // 参数2：给请求选择一个缓存策略
75 // 参数3: 请求超时时间
76 NSMutableURLRequest *requset = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:30.0];
77 // 4. 给请求设置 请求方式
78 [requset setHTTPMethod:@"GET"];
79 // 5. 将请求发送给服务器
80
81 // 同步连接
82 // 参数1：请求（request）
83 // 参数2：响应信息
84 // 参数3：错误信息
85 // 同步连接的方法 会一直等待 数据完整接受之后才继续执行
86 NSURLResponse *response = nil;
87 NSError *error = nil;
88 NSData *data = [NSURLConnection sendSynchronousRequest:requset returningResponse:&response error:&error];
89
90 //在这里获得的是完整的 data数据
91 NSLog(@"服务器响应信息：%@", response);
92
93 // 使用NSData数据
94 UIImage *image = [UIImage imageWithData:data];
95 self.imageView.image = image;
96 NSLog(@"%@", NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES));
97
98 }
99 -(void)dealloc
100 {
101 [_data release];
102 [_imageView release];
103 [super dealloc];
104 }
105 - (void)buttonClicked2:(UIButton *)button
106 {
107 // 同步POST
108 NSString *str = @"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx";
109 NSURL *url = [NSURL URLWithString:str];
110
111 // 创建请求
112 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
113 // 设置请求方式
114 [request setHTTPMethod:@"POST"];
115
116 // 产生一个body
117 NSString *bodyStr = @"date=20131129&startRecord=1&len=30&udid=1234567890&terminalType=Iphone&cid=213";
118 NSData *data = [bodyStr dataUsingEncoding:NSUTF8StringEncoding];
119
120 // 设置post请求 附带的数据
121 [request setHTTPBody:data];
122
123 // 同步连接 获取内容
124 NSURLResponse *response = nil;
125 NSData *dataBack = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
126 NSLog(@"%@", response);
127
128 // 测试返回数据内容
129 NSString *result = [[NSString alloc] initWithData:dataBack encoding:NSUTF8StringEncoding];
130 NSLog(@"%@", result);
131
132 }
133
134 - (void)buttonClicked3:(UIButton *)button
135 {
136 // 异步
137 // 1. 产生请求
138 NSString *str = @"http://pic13.nipic.com/20110313/2686941_211532129160_2.jpg";
139 NSURL *url = [NSURL URLWithString:str];
140
141 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
142
143 [request setHTTPMethod:@"GET"];
144
145 // 2.建立连接
146 // 异步联接 不会卡死界面
147 // 参数1:设定好的请求
148 // 参数2：设定网络请求的代理人
149 [NSURLConnection connectionWithRequest:request delegate:self];
150
151
152 }
153 // 当收到服务器的响应信息 的时候 调用
154 -(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
155 {
156 // 当每次需要接受新的数据的时候 初始化data属性
157 NSLog(@"%s", __FUNCTION__);
158 self.data = [NSMutableData data];
159 }
160 // 当收到服务器发送来的 data数据块 的时候 调用
161 -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
162 {
163 NSLog(@"%s", __FUNCTION__);
164 [self.data appendData:data];
165 }
166 // 当数据接受完毕 的时候 调用
167 -(void)connectionDidFinishLoading:(NSURLConnection *)connection
168 {
169 // 调用这个方法 说明 self.data属性已经是一个完整的数据
170 NSLog(@"%s", __FUNCTION__);
171 UIImage *image = [UIImage imageWithData:self.data];
172 self.imageView.image = image;
173 }
174 - (void)buttonClicked4:(UIButton *)button
175 {
176 // 异步POST
177
178 NSString *str = @"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx";
179 NSURL *url = [NSURL URLWithString:str];
180
181 // 创建请求
182 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
183 // 设置请求方式
184 [request setHTTPMethod:@"POST"];
185
186 // 设置body
187 NSString *bodyStr = @"date=20131129&startRecord=1&len=30&udid=1234567890&terminalType=Iphone&cid=213";
188 NSData *data = [bodyStr dataUsingEncoding:NSUTF8StringEncoding];
189
190 // 设置post请求 附带的数据
191 [request setHTTPBody:data];
192
193
194
195 // 2. 连接
196 // block 基础上的异步连接
197
198
199 // 参数1：请求
200 // 参数2：返回主线程
201 // 参数3：
202 [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
203 // 当异步联接完毕 而且 请求但完整的数据（参数data）之后 才执行这个块的内容
204
205 // 在这个块中 写处理数据的代码 （解析/转化为image/音频/视频）
206 NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
207 NSLog(@"%@", dic);
208 }];
209
210 }
时间： 2024-08-07 01:06:39