1 在ViewController中的代码如下
2
3 - (void)viewDidLoad {
4 [super viewDidLoad];
5
6 NSString *urlStr1 = @"http://localhost/cgi-bin/post1.cgi";
7 NSString *urlStr2 = @"http://localhost/cgi-bin/post2.cgi";
8
9 // [self sendPost1:urlStr1];
10 [self sendPost2:urlStr2];
11 }
12
13 #pragma mark -send POST 2-
14 /**
15 使用NSData（二进制数据）承载请求信息，多用于上传文件
16 */
17 -(void)sendPost2:(NSString*)urlStr{
18 //准备工作(规定好了的格式)
19 NSString *head = @"Content-type: multipart/form-data, boundary=AaB03x\n\n";
20 //规定分隔符
21 NSString *boundary = @"AaB03x";
22 //头的分隔符
23 NSString *headBoundary = [NSString stringWithFormat:@"--%@\n",boundary];
24 //尾的分隔符
25 NSString *endBoundary = [NSString stringWithFormat:@"\n--%@--\n",boundary];
26
27 //封装请求头
28 NSString *contentString = @"content-disposition: form-data; name=\"pic\"; filename=\"star_pressed.png\"Content-Type: image/png\n\n";
29
30 //创建请求
31 NSURL *url = [NSURL URLWithString:urlStr];
32 NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL:url];
33
34 //对请求操作
35 [request setHTTPMethod:@"POST"];
36 //设置上传数据的格式
37 [request addValue:@"multipart/form-data" forHTTPHeaderField:@"Content-Type"];
38
39 //设置body
40 NSData *fileData = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"star_pressed" ofType:@"png"]];
41
42 //设置总的请求体
43 NSMutableData *data = [NSMutableData data];
44
45 //报头文 = 头 + 头分隔符 + 内容说明 + body实体 + 尾分隔符
46
47 [data appendData:[head dataUsingEncoding:NSUTF8StringEncoding]];
48 [data appendData:[headBoundary dataUsingEncoding:NSUTF8StringEncoding]];
49 [data appendData:[contentString dataUsingEncoding:NSUTF8StringEncoding]];
50 [data appendData:fileData];
51 [data appendData:[endBoundary dataUsingEncoding:NSUTF8StringEncoding]];
52
53 //设置请求数据的长度
54 [request setValue:[NSString stringWithFormat:@"%lu",(unsigned long)data.length] forHTTPHeaderField:@"Content-Length"];
55
56 [request setHTTPBody:data];
57
58 //创建请求，等待返回
59 _connection = [[NSURLConnection alloc]initWithRequest:request delegate:self];
60 }
61
62 #pragma mark -send POST 1-
63 /**
64 GET相似，使用url承载请求信息，多用于登陆注册，填表等操作（这种方式的POST请求也能用GET请求实现，但是GET请求，发送的数据是裸露的）
65 */
66 -(void)sendPost1:(NSString*)urlStr{
67 NSURL *url = [NSURL URLWithString:urlStr];
68
69 NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL:url];
70
71 //规定请求方式为POST请求
72 [request setHTTPMethod:@"POST"];
73 //要上传的数据
74 NSString *postStr = @"username=jingjing&password=woxiangjingjing&message=yueme";
75 //转化成二进制数据
76 NSData *postData = [postStr dataUsingEncoding:NSUTF8StringEncoding];
77 //设置请求体
78 [request setHTTPBody:postData];
79
80 //设置请求数据的长度
81 [request setValue:[NSString stringWithFormat:@"%lu",(unsigned long)postData.length] forHTTPHeaderField:@"Content-Length"];
82
83 //设置上传数据的格式
84 [request addValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
85
86 //创建请求，等待返回
87 _connection = [[NSURLConnection alloc]initWithRequest:request delegate:self];
88 }
89
90
91
92 #pragma mark -代理方法-
93
94 - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
95
96 NSLog(@"接收到响应头");
97 NSLog(@"response:%@",response);
98
99 if (_data == nil) {
100 _data = [[NSMutableData alloc]init];
101 }
102 _data.length = 0;
103 }
104
105 - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
106 [_data appendData:data];
107
108 NSLog(@"收到数据。。。。：%ld",data.length);
109
110 }
111
112 -(void)connectionDidFinishLoading:(NSURLConnection *)connection{
113 NSString *str = [[NSString alloc]initWithData:_data encoding:NSUTF8StringEncoding];
114 NSLog(@"接收数据完毕：\n%@",str);
115 }
116
117 -(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
118 NSLog(@"报错了：%@",error);
119 }
120
121
122
123 - (void)didReceiveMemoryWarning {
124 [super didReceiveMemoryWarning];
125 // Dispose of any resources that can be recreated.
126 }
