1 #import "HMViewController.h"
2 #import "MBProgressHUD+MJ.h"
3
4 @interface HMViewController ()
5 @property (weak, nonatomic) IBOutlet UITextField *usernameField;
6 @property (weak, nonatomic) IBOutlet UITextField *pwdField;
7 - (IBAction)login;
8 @end
9
10 @implementation HMViewController
11
12
13 /**
14 * 登录逻辑
15 */
16 - (IBAction)login
17 {
18 // 1.表单验证(输入验证)
19 NSString *username = self.usernameField.text;
20 if (username.length == 0) { // 没有输入用户名
21 [MBProgressHUD showError:@"请输入用户名"];
22 return;
23 }
24
25 NSString *pwd = self.pwdField.text;
26 if (pwd.length == 0) { // 没有输入密码
27 [MBProgressHUD showError:@"请输入密码"];
28 return;
29 }
30
31 // 弹框
32 [MBProgressHUD showMessage:@"正在拼命登录中..."];
33
34 // 2.发送请求给服务器(带上帐号和密码)
35 // POST请求:请求体
36
37 // 2.1.设置请求路径
38 NSURL *url = [NSURL URLWithString:@"http://192.168.1.200:8080/MJServer/login"];
39
40 // 2.2.创建请求对象
41 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; // 默认就是GET请求
42 request.timeoutInterval = 5; // 设置请求超时
43 request.HTTPMethod = @"POST"; // 设置为POST请求
44
45 // 通过请求头告诉服务器客户端的类型
46 [request setValue:@"ios" forHTTPHeaderField:@"User-Agent"];
47
48 // 设置请求体
49 NSString *param = [NSString stringWithFormat:@"username=%@&pwd=%@", username, pwd];
50 request.HTTPBody = [param dataUsingEncoding:NSUTF8StringEncoding];
51
52 // 2.3.发送请求
53 NSOperationQueue *queue = [NSOperationQueue mainQueue];
54 [NSURLConnection sendAsynchronousRequest:request queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { // 当请求结束的时候调用 (拿到了服务器的数据, 请求失败)
55 // 隐藏HUD (刷新UI界面, 一定要放在主线程, 不能放在子线程)
56 [MBProgressHUD hideHUD];
57
58 /**
59 解析data :
60 {"error":"用户名不存在"}
61 {"error":"密码不正确"}
62 {"success":"登录成功"}
63 */
64 if (data) { // 请求成功
65 NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];
66 NSString *error = dict[@"error"];
67 if (error) { // 登录失败
68 [MBProgressHUD showError:error];
69 } else { // 登录成功
70 NSString *success = dict[@"success"];
71 [MBProgressHUD showSuccess:success];
72 }
73 } else { // 请求失败
74 [MBProgressHUD showError:@"网络繁忙, 请稍后再试"];
75 }
76 }];
77 }
78
79 @end
