iOS的网路请求

来源：互联网发布：windows tracert 多个编辑：程序博客网时间：2024/05/17 20:30

//首先创建一个UIViewController,然后在.m文件中写入

//签订协议

@interface MainViewController ()<NSURLConnectionDataDelegate>

//可变的数据属性,用来拼接每一小块数据

@property (nonatomic,retain)NSMutableData *data;

@property (nonatomic,retain)UIImageView *imageView;

@end

@implementation MainViewController

- (void)viewDidLoad {

[superviewDidLoad];

// Do any additional setup after loading the view.

self.imageView = [[UIImageViewalloc]initWithFrame:CGRectMake(30,64,280, 200)];

self.imageView.backgroundColor = [UIColorredColor];

[self.viewaddSubview:self.imageView];

[_imageView release];

UIButton *buttonGET = [UIButtonbuttonWithType:UIButtonTypeSystem];

buttonGET.frame =CGRectMake(50,300,100, 40);

buttonGET.backgroundColor = [UIColorcyanColor];

[buttonGET setTitle:@"GET请求"forState:UIControlStateNormal];

[buttonGET addTarget:selfaction:@selector(getAction:)forControlEvents:UIControlEventTouchUpInside];

[self.viewaddSubview:buttonGET];

UIButton *buttonPOST = [UIButtonbuttonWithType:UIButtonTypeSystem];

buttonPOST.frame =CGRectMake(200,300,100, 40);

buttonPOST.backgroundColor = [UIColorcyanColor];

[buttonPOST setTitle:@"POST请求"forState:UIControlStateNormal];

[buttonPOST addTarget:selfaction:@selector(postAction:)forControlEvents:UIControlEventTouchUpInside];

[self.viewaddSubview:buttonPOST];

UIButton *buttonSync = [UIButtonbuttonWithType:UIButtonTypeSystem];

buttonSync.frame =CGRectMake(50,400,100, 40);

buttonSync.backgroundColor = [UIColorcyanColor];

[buttonSync setTitle:@"异步连接(代理)"forState:UIControlStateNormal];

[buttonSync addTarget:selfaction:@selector(syncAction:)forControlEvents:UIControlEventTouchUpInside];

[self.viewaddSubview:buttonSync];

UIButton *buttonAsync = [UIButtonbuttonWithType:UIButtonTypeSystem];

buttonAsync.frame =CGRectMake(200,400,100, 40);

buttonAsync.backgroundColor = [UIColorcyanColor];

[buttonAsync setTitle:@"异步连接(blick)"forState:UIControlStateNormal];

[buttonAsync addTarget:selfaction:@selector(asynAction:)forControlEvents:UIControlEventTouchUpInside];

[self.viewaddSubview:buttonAsync];

}

- (void)getAction:(UIButton *)button

{

//get请求

//1.创建请求

//地址字符串

NSString *str =@"添加网址";

//对地址进行编码处理,对一些特殊字符转为utf-8编码格式

str = [str stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

//通过字符串产生一个url

NSURL *url = [NSURLURLWithString:str];

//参数1:URL

//参数2:请求数据的缓存策略

//参数3:超时时间

NSMutableURLRequest *request = [NSMutableURLRequestrequestWithURL:urlcachePolicy:NSURLRequestUseProtocolCachePolicytimeoutInterval:60];

//设置请求方式(GET)

request.HTTPMethod =@"GET";

//2.建立连接,连接服务器

//同步连接服务器

//这个同步的方法可以直接获取到完整的网络数据

NSURLResponse *response =nil;

NSError *error =nil;

//参数1:要发送给服务器的请求

//参数2:从服务器获得的响应信息

//参数3:错误信息

NSData *data = [NSURLConnectionsendSynchronousRequest:requestreturningResponse:&response error:&error];

NSLog(@"服务器响应信息: %@", response);

NSLog(@"错误信息: %@", error);

//3.获取数据,处理

UIImage *image = [UIImageimageWithData:data];

self.imageView.image = image;

}

- (void)postAction:(UIButton *)button

{

//post请求

//1.创建请求

NSString *str =@"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx";

str = [str stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

NSURL *url = [NSURLURLWithString:str];

NSMutableURLRequest *request = [NSMutableURLRequestrequestWithURL:urlcachePolicy:NSURLRequestUseProtocolCachePolicytimeoutInterval:60];

//设置请求方式

request.HTTPMethod =@"POST";

//设置post请求body

NSString *bodyStr =@"date=20131129&startRecord=1&len=30&udid=1234567890&terminalType=Iphone&cid=213";

//将一个字符串对象,转换为一个NSData对象

NSData *bodyData = [bodyStrdataUsingEncoding:NSUTF8StringEncoding];

request.HTTPBody = bodyData;

//2.建立连接,连接服务器

NSURLResponse *response =nil;

NSError *error =nil;

NSData *resultData = [NSURLConnectionsendSynchronousRequest:requestreturningResponse:&response error:&error];

NSLog(@"%@", response);

//3.处理数据

NSError *errorJSON =nil;

id result = [NSJSONSerializationJSONObjectWithData:resultDataoptions:NSJSONReadingMutableContainerserror:&errorJSON];

NSLog(@"%@", result);

NSString *resultstr = [[NSStringalloc]initWithData:resultDataencoding:NSUTF8StringEncoding];

NSLog(@"%@", resultstr);

}

- (void)syncAction:(UIButton *)button

{

//异步连接服务器(协议方式连接)

//1.创建请求

str = [str stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

NSURL *url = [NSURLURLWithString:str];

NSMutableURLRequest *request = [NSMutableURLRequestrequestWithURL:urlcachePolicy:NSURLRequestUseProtocolCachePolicytimeoutInterval:60];

request.HTTPMethod =@"GET";

//2.连接服务器

[NSURLConnectionconnectionWithRequest:requestdelegate:self];

}

//收到服务器的响应信息

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

{

//每次收到服务器响应信息的时候,对数据进行初始化,准备拼接

self.data = [NSMutableDatadata];

NSLog(@"%@", response);

}

//接收到服务器数据

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

{

//拼接数据

[self.dataappendData:data];

NSLog(@"获取数据");

}

//完成加载

- (void)connectionDidFinishLoading:(NSURLConnection *)connection

{

//使用数据

id resulet = [NSJSONSerializationJSONObjectWithData:self.dataoptions:NSJSONReadingMutableContainerserror:nil];

NSLog(@"完成加载");

}

- (void)asynAction:(UIButton *)button

{

//异步连接(block)

//1.创建请求

str = [str stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

NSURL *url = [NSURLURLWithString:str];

NSMutableURLRequest *request = [NSMutableURLRequestrequestWithURL:urlcachePolicy:NSURLRequestUseProtocolCachePolicytimeoutInterval:60];

request.HTTPMethod =@"GET";

//2.连接服务器

//参数1:请求

//参数2:操作队列,网络请求完毕,返回到哪个线程中

//参数3:处理数据的block

[NSURLConnectionsendAsynchronousRequest:requestqueue:[NSOperationQueuemainQueue] completionHandler:^(NSURLResponse *response,NSData *data,NSError *connectionError) {

//3.处理数据

NSError *resultError =nil;

id result = [NSJSONSerializationJSONObjectWithData:dataoptions:NSJSONReadingMutableContainerserror:&resultError];

NSLog(@"%@", result);

}];

}

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