网络解析 get 和post

//get同步

- (IBAction)getT:(id)sender {

//准备一个Url

NSURL *url=[NSURL URLWithString:BASE_URL];

//创建一个请求对象

NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:url];

//选择请求方式

[request setHTTPMethod:@"GET"];

//创建响应对象

NSURLResponse *response=nil;

//是否出错

NSError *error=nil;

//创建连接

NSData *data=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];

//解析数据

NSArray*arr=[NSJSONSerialization JSONObjectWithData:data options:(NSJSONReadingMutableContainers) error:nil];

//转换成字符串

NSString *s=[NSString stringWithFormat:@"%@",arr];

//打印

NSLog(@"%@",s);

}

*******************************************

//POST  同步

- (IBAction)postT:(id)sender {

//准备一个url

NSURL *url=[NSURL URLWithString:BASE_URL_2];

//创建一个请求对象

NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:url];

[request setHTTPMethod:@"POST"];

//body

NSData *databody=[BASE_URL_2_PARAM dataUsingEncoding:NSUTF8StringEncoding];

//给请求设置body

[request setHTTPBody:databody];

//创建连接

NSData *data=[NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];

//数据解析

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

NSString *s=[NSString stringWithFormat:@"%@",dic];

NSLog(@"%@",s);

}

*****************************

//GET 异步  代理

- (IBAction)getYBDL:(id)sender {

//准备 URl

NSURL *url=[NSURL URLWithString:BASE_URL];

//创建请求对象

NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:url];

[request setHTTPMethod:@"GET"];

//创建链接(同时设置代理)

NSURLConnection*conn=[NSURLConnection connectionWithRequest:request delegate:self];

//启动链接

[conn start];

}

//代理方法一 :接收到响应

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

{

self.redata=[NSMutableData data];

}

//代理方法二:接收数据

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

{

[self.redata appendData:data];

}

//代理方法三:接收完成处理数据

-(void)connectionDidFinishLoading:(NSURLConnection *)connection

{

//数据处理

NSArray *arr=[NSJSONSerialization JSONObjectWithData:self.redata options:(NSJSONReadingMutableContainers) error:nil];

NSString *s=[NSString stringWithFormat:@"%@",arr];

NSLog(@"%@",s);

}

//代理方法四:出错

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

{

}

******************************************************

//POST异步 block

- (IBAction)postBLOCK:(id)sender {

//准备url

NSURL *url=[NSURL URLWithString:BASE_URL_2];

//创建请求对象

NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:url];

[request setHTTPMethod:@"POST"];

//加body

NSData *databody=[BASE_URL_2_PARAM dataUsingEncoding:NSUTF8StringEncoding];

[request setHTTPBody:databody];

//创建连接

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

//解析数据

NSArray *arr=[NSJSONSerialization JSONObjectWithData:data options:(NSJSONReadingMutableContainers) error:nil];

//转换数据

NSString *s=[NSString stringWithFormat:@"%@",arr];

//打印

NSLog(@"%@",s);

}];

}

***************************************************

//GET异步 block

- (IBAction)getBLOCK:(id)sender {

NSURL *url=[NSURL URLWithString:BASE_URL];

NSURLRequest *request=[NSURLRequest requestWithURL:url];

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

NSArray *arr=[NSJSONSerialization JSONObjectWithData:data options:(NSJSONReadingMutableContainers) error:nil];

NSString *s=[NSString stringWithFormat:@"%@",arr];

NSLog(@"%@",s);

}];

}