首页 > 代码库 > IOS 网络编程 代码

IOS 网络编程 代码

//  ViewController.m

//  16_网络编程

//  Created by lanou3g on 14-12-19.

//  Copyright (c) 2014年 mxt. All rights reserved.

 

#import "ViewController.h"

 

#define BASE_URL @"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx?date=20131129&startRecord=1&len=5&udid=1234567890&terminalType=Iphone&cid=213"

 

 

#define BASE_POST_URL @"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx?"

 

#define POST @"date=20131129&startRecord=1&len=5&udid=1234567890&terminalType=Iphone&cid=213"

 

@interface ViewController ()<NSURLConnectionDataDelegate>

@property(nonatomic,retain)NSMutableData *mutaData;

 

@end

 

@implementation ViewController

 

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

}

 

/*

不同点:

1、给服务器传输数据的?方式:

GET :通过网址字符串。

POST:通过data

2、传输数据的大小:

 GET :网址字符串最多255字节。

 POST:使?用NSData,容量超过1G

3、安全性:

 GET:所有传输给服务器的数据,显示在网址?里,类似于密码的明?输入,直接可见。

POST:数据被转成NSData(二进制数据),类似于密码的密?输入,无法直接读取

*/

 

//GET 同步

- (IBAction)getSyncButton:(id)sender {

    //1, 创建URL

    NSURL *url = [NSURL URLWithString:BASE_URL];

    //2, 创建NSURLRequest  请求对象

    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

    //2, 1

    [request setHTTPMethod:@"GET"];

    //3,返回结果对象:返回值信息

    NSURLResponse *response = nil;

    NSError *error = nil;

    

    //4,创建链接对象 NSURLConnection

    NSData *data = http://www.mamicode.com/[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];

    

   // NSLog(@"返回类型 %@ ",response);//打印返回值信息

   // NSLog(@"--------------------%@",data);

    

    //6 解析

    NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];

    //NSLog(@"+++++++++%@",dic);

    

   // NSLog(@"%@",[dic valueForKey:@"news"]);

}

 

 

//post 同步

- (IBAction)postSyncButton:(id)sender {

    //1,创建URL

    NSURL *url = [NSURL URLWithString:BASE_POST_URL];

    

    //1,1 设置请求体中的参数,进行编码

    NSString *post = [NSString stringWithFormat:POST];

    NSData *postData = http://www.mamicode.com/[post dataUsingEncoding:NSUTF8StringEncoding];

    //2,创建NSURLRequest  请求对象(可变 是因为要设置参数)

    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

    //2,1

    [request setHTTPMethod:@"POST"];

    [request setHTTPBody:postData];

     NSError *error = nil;

    //3,创建链接对象 NSURLConnection  (同步 不设置代理)

    NSData *data = http://www.mamicode.com/[NSURLConnection sendSynchronousRequest:request returningResponse:nil error:&error];

     // NSLog(@"--------------------%@",data);

    //6 解析

    NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];

    NSLog(@"+++++++++%@",dic);

    

    // NSLog(@"%@",[dic valueForKey:@"news"]);

  }

 

 

/*

 异步联接有两种实现?方式:

 1, 设置代理,接收数据

 2, 实现block(多线程)

 */

 

 

//GET异步

- (IBAction)getAsyncButton:(id)sender {

    

    //  GET异步 + block

    //1, 创建URL

    NSURL *url = [NSURL URLWithString:BASE_URL];

    //2, 创建NSURLRequest  请求对象

    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

    //2,1

    [request setHTTPMethod:@"GET"];

    //创建操作队列

    NSOperationQueue *queue = [[NSOperationQueue alloc] init];

    //3,创建链接对象 NSURLConnection (在block 内部完成解析)

    

    __block ViewController *weakSelf = self;

    

    [NSURLConnection  sendAsynchronousRequest:request queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {

        

        //3,1 解析

        NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];

        //NSLog(@"+++++++++%@",dic);

        //永远不要在子线程更新UI

        dispatch_async(dispatch_get_main_queue(), ^{

            //回到主线程 更新UI

            weakSelf.textView.text = [NSString stringWithFormat:@"%@",dic];

        });

    }];

    NSLog(@">>>>>>>>>>>>>>><<<>>%lu",_textView.retainCount);

    [queue release];

    

    

    

    

    

    

   /*

    //1, 创建URL

    NSURL *url = [NSURL URLWithString:BASE_URL];

     //2, 创建NSURLRequest  请求对象

    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

    //2,1

    [request setHTTPMethod:@"GET"];

      //3, 创建链接对象 发送请求  设置代理

    [NSURLConnection connectionWithRequest:request delegate:self];

 

    */

    

    

    

}

 

#pragma mark -NSURLConnectionDataDelegate

//开始接受

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)respons

{

    NSLog(@"开始接受");

    self.mutaData = http://www.mamicode.com/[NSMutableData data];

 

    NSLog(@"%lu",_mutaData.retainCount);

}

 

//接受数据

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data

{

    NSLog(@"---------接受数据");

 

    [self.mutaData appendData:data];

}

 

//接受完毕

- (void)connectionDidFinishLoading:(NSURLConnection *)connection

{

    NSLog(@"++接受完毕");

    //解析

    NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:_mutaData options:NSJSONReadingMutableContainers error:nil];

    

    NSLog(@"%@",dic);

}

 

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error

{

    NSLog(@"错误");

 

}

 

 

 

 

 

 

//POST 异步

- (IBAction)postAsyncButton:(id)sender {

    

    //1,创建URL

    NSURL *url = [NSURL URLWithString:BASE_POST_URL];

    

    //1,1 设置请求体中的参数,进行编码

    NSString *post = [NSString stringWithFormat:POST];

    NSData *postData = http://www.mamicode.com/[post dataUsingEncoding:NSUTF8StringEncoding];

    

    

    //2,创建NSURLRequest  请求对象(可变 是因为要设置参数)

    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

    //2,1

    [request setHTTPMethod:@"POST"];

    [request setHTTPBody:postData];

    

    //创建操作队列

    NSOperationQueue *queue = [[NSOperationQueue alloc] init];

    //3,创建链接对象 NSURLConnection (在block 内部完成解析)

    

    __block ViewController *weakSelf = self;

    

    [NSURLConnection  sendAsynchronousRequest:request queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {

        

        //3,1 解析

        NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];

        //NSLog(@"+++++++++%@",dic);

        

        //永远不要在子线程更新UI

        dispatch_async(dispatch_get_main_queue(), ^{

            //回到主线程 更新UI

            

            weakSelf.textView.text = [NSString stringWithFormat:@"%@",dic];

 

        });

    }];

     NSLog(@">>>>>>>>>>>>>>><<<>>%lu",_textView.retainCount);

    

   

    [queue release];

    

    

    

}

 

 

- (void)dealloc

{

    [_mutaData release];

    [_textView release];

    

    [super dealloc];

}

 

 

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

 

@end

 

IOS 网络编程 代码