1 // 2 //  ZFViewController.m 3 //  0628-表單驗證 4 // 5 //  Created by zfan on 14-6-28. 6 //  Copyright (c) 2014年 zfan. All rights reserved. 7 // 8  9 #import "ZFViewController.h"10 #import "MBPRogressHUD+MJ.h"11 12 @interface ZFViewController ()13 14 @property (weak, nonatomic) IBOutlet UITextField *userNameTextField;15 @property (weak, nonatomic) IBOutlet UITextField *passWordTextField;16 17 @end18 19 @implementation ZFViewController20 21 - (void)viewDidLoad22 {23     [super viewDidLoad];24 }25 26 - (IBAction)login:(id)sender27 {28     //驗證賬號和密碼是否合法29     if (self.userNameTextField.text.length == 0)30     {31         [MBProgressHUD showError:@"請輸入賬號"];32         return;33     }34     35     if (self.passWordTextField.text.length == 0)36     {37         [MBProgressHUD showError:@"請輸入密碼"];38         return;39     }40     41     //取出賬號和密碼42     NSString *userName = self.userNameTextField.text;43     NSString *password = self.passWordTextField.text;44     45     //生成URL46     NSString *urlPath = [NSString stringWithFormat:@"http://192.168.1.101:8080/ZFServer/login?username=%@&pwd=%@", userName, password];47     NSURL *url = [NSURL URLWithString:urlPath];48     49     //生成連接50     NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];51     52     //建立連接并接收返回數據(同步執行)53 //    NSData *loginData = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:nil error:nil];54     55     56     //建立連接并接收返回數據(異步執行)57     NSOperationQueue *queue = [[NSOperationQueue alloc] init];58     [NSURLConnection sendAsynchronousRequest:urlRequest queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {59         NSData *loginData = data;60         NSLog(@"%ld", (unsigned long)loginData.length);61     }];62     63     //打印返回的數據長度64     NSLog(@"%@", self.userNameTextField.text);65     NSLog(@"%@", self.passWordTextField.text);66 //    NSLog(@"%ld", (unsigned long)loginData.length);67 }68 69 @end

[NSURLConnection sendSynchronousRequest:urlRequest returningResponse:nil error:nil];

NSOperationQueue *queue = [[NSOperationQueue alloc] init];[NSURLConnection sendAsynchronousRequest:urlRequest queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {　　NSData *loginData = data;　　NSLog(@"%ld", (unsigned long)loginData.length);}];