////  LWTViewController.m//  网络编程练习 -- NSURLConnection -- get请求////  Created by apple on 14-6-26.//  Copyright (c) 2014年 lwt. All rights reserved.//#import "LWTViewController.h"#import "MBProgressHUD+MJ.h"@interface LWTViewController () <NSURLConnectionDataDelegate>@property (weak, nonatomic) IBOutlet UITextField *usernameField;@property (weak, nonatomic) IBOutlet UITextField *pwdField;@property (nonatomic, strong) NSMutableData *data;- (IBAction)loginBtnOnClick;@end@implementation LWTViewController- (void)viewDidLoad{    [super viewDidLoad];}- (IBAction)loginBtnOnClick {        NSString *username = self.usernameField.text;    NSString *pwd = self.pwdField.text;        if (username.length == 0) {        [MBProgressHUD showError:@"请输入用户名"];        return;    }        if (pwd.length == 0) {        [MBProgressHUD showError:@"请输入密码"];        return;    }        NSString *urlStr = [[NSString stringWithFormat:@"http://192.168.1.24:8080/MJServer/login?username=%@&pwd=%@", username, pwd] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];    NSURL *url = [NSURL URLWithString:urlStr];    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];    request.timeoutInterval = 5;    //    [self dataSyncFromRequest:request];//    [self dataAsyncFromRequest:request];    [self delegateFromRequest:request];        }/** *  同步请求, 会阻塞线程 */- (void)dataSyncFromRequest : (NSURLRequest *)request{    NSData *data =http://www.mamicode.com/ [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];        NSLog(@"%d",data.length);}/** *  异步请求 */- (void)dataAsyncFromRequest : (NSURLRequest *)request{    [MBProgressHUD showMessage:@"正在拼命加载中..."];    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {        [MBProgressHUD hideHUD];                if (connectionError) {            [MBProgressHUD showError:@"网络繁忙,请稍后再试!!"];            return ;        }                NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];                NSString *error = dict[@"error"];        if (error) {            [MBProgressHUD showError:error];        }else        {            NSString *success = dict[@"success"];            [MBProgressHUD showSuccess:success];        }            }];}- (void)delegateFromRequest : (NSURLRequest *)request{    NSURLConnection *conn = [NSURLConnection connectionWithRequest:request delegate:self];        [conn start];        [MBProgressHUD showMessage:@"正在拼命加载中..."];}- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{    NSLog(@"didFailWithError");    [MBProgressHUD hideHUD];    [MBProgressHUD showError:@"网络繁忙,请稍后再试"];}- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{    NSLog(@"didReceiveResponse");    self.data = [NSMutableData data];}- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{    NSLog(@"didReceiveData");    [self.data appendData:data];}- (void)connectionDidFinishLoading:(NSURLConnection *)connection{    NSLog(@"connectionDidFinishLoading");    [MBProgressHUD hideHUD];        NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:self.data options:NSJSONReadingMutableLeaves error:nil];        NSString *error = dict[@"error"];        if (error) {        [MBProgressHUD showError:error];    }else    {        NSString *success = dict[@"success"];        [MBProgressHUD showSuccess:success];    }}@end

////  LWTViewController.m//  网络编程练习 -- NSURLConnection -- POST请求////  Created by apple on 14-6-26.//  Copyright (c) 2014年 lwt. All rights reserved.//#import "LWTViewController.h"#import "MBProgressHUD+MJ.h"@interface LWTViewController ()@property (weak, nonatomic) IBOutlet UITextField *usernameField;@property (weak, nonatomic) IBOutlet UITextField *pwdField;@property (nonatomic, strong) NSMutableData *data;- (IBAction)loginBtnOnClick;@end@implementation LWTViewController- (void)viewDidLoad{    [super viewDidLoad];}- (IBAction)loginBtnOnClick{    NSString *username = self.usernameField.text;    NSString *pwd = self.pwdField.text;    if (username.length == 0) {        [MBProgressHUD showError:@"请输入用户名"];        return;    }    if (pwd.length == 0) {        [MBProgressHUD showError:@"请输入密码"];        return;    }        NSURL *url = [NSURL URLWithString:[@"http://192.168.1.24:8080/MJServer/login" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];    request.timeoutInterval = 5;    request.HTTPMethod = @"POST";    [request setValue:@"Andriod and iOS" forHTTPHeaderField:@"User-Agent"];    NSString *body = [NSString stringWithFormat:@"username=%@&pwd=%@", username, pwd];    request.HTTPBody = [body dataUsingEncoding:NSUTF8StringEncoding];        [MBProgressHUD showMessage:@"正在拼命加载中..."];        [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {        [MBProgressHUD hideHUD];        if (connectionError) {            [MBProgressHUD showError:@"网络繁忙, 请稍后重试!!"];            return ;        }                NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];        NSString *error = dict[@"error"];        if (error) {            [MBProgressHUD showError:error];        }else        {            NSString *success = dict[@"success"];            [MBProgressHUD showSuccess:success];        }            }];}@end