IOS中get同步异步请求与post同步异步请求

 #import "ViewController.h"      @interface ViewController ()    @property(nonatomic,strong)UITextView *textView;    @property(nonatomic,copy)NSString *BASE_URL;    @property(nonatomic,copy)NSString *BASE_URL1_PARAM;    @property(nonatomic,strong)NSMutableData *mutableData;    @end      @implementation ViewController      - (void)viewDidLoad {        [super viewDidLoad];                        // Do any additional setup after loading the view, typically from a nib.    }    #pragma mark - get同步    - (IBAction)getSyncButtonAction:(UIButton *)sender    {        NSString * BASE_URL= @"www.baidu.com";        //1.准备URL地址        NSURL *url = [NSURL URLWithString:BASE_URL];                //2.准备请求对象        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];                //2.1设置请求方式        [request setHTTPMethod:@"GET"];                //3.准备返回结果        NSURLResponse *response = nil;        NSError *error = nil;                //4.创建链接对象,并发送请求,并获取结果(需要的数据)        NSData *data =  [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];                //5.打印获取到的一些信息        NSLog(@"结果类型:%@",response.MIMEType);        NSLog(@"请求的网址:%@",response.URL);        NSLog(@"结果长度:%lld",response.expectedContentLength);        NSLog(@"请求到的结果:%@",data);                //6.解析文件        NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];                //7.显示在textView里        self.textView.text = [NSString stringWithFormat:@"%@",dict];            }      #pragma mark - get异步    - (IBAction)getAsyncButtonAction:(UIButton *)sender    {        //1.准备url地址        NSURL *url = [NSURL URLWithString:_BASE_URL];        //2.创建请求对象        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];        //3.创建链接对象,发送请求        [NSURLConnection connectionWithRequest:request delegate:self];            }        #pragma mark - POST同步    - (IBAction)postSyncButtonAction:(UIButton *)sender    {        //1.准备网址        NSURL *url = [NSURL URLWithString:_BASE_URL];                //2.准备请求对象        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];                //2.1设置请求方式        [request setHTTPMethod:@"POST"];                //2.2设置请求参数    #warning 设置请求参数,需要的是NSData类型        NSData *param = [_BASE_URL1_PARAM dataUsingEncoding:NSUTF8StringEncoding];        [request setHTTPBody:param];                //3.创建链接对象,并发送请求,获取结果        NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];                //4.解析        NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];                //5.显示        self.textView.text = [NSString stringWithFormat:@"%@",dict];    }      #pragma mark - POST异步    - (IBAction)postAsyncButtonAction:(UIButton *)sender    {        __block ViewController *weakSelf = self;                //1.准备地址        NSURL *url = [NSURL URLWithString:_BASE_URL];        //2.创建请求对象,并设置请求方法和参数        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];        [request setHTTPMethod:@"POST"];        [request setHTTPBody:[_BASE_URL1_PARAM dataUsingEncoding:NSUTF8StringEncoding]];                //3.创建链接对象,发送请求,在block内部完成分析        [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue new]  completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {            //NSLog(@"%@",data);                        //4.解析            NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];                        //5.回到主线程,进行更新页面            dispatch_sync(dispatch_get_main_queue(), ^{                weakSelf.textView.text = [NSString stringWithFormat:@"%@",dict];            });                    }];                            }        #pragma mark - 清除    - (IBAction)clearButtonAction:(UIButton *)sender    {        _textView.text = nil;    }            #pragma mark - 实现协议方法    #pragma mark 开始接收请求结果    - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response    {        //初始化        self.mutableData = [NSMutableData data];    }      #pragma mark - 接收数据    - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data    {        //拼接接收到的数据        [self.mutableData appendData:data];            }      #pragma makr - 接收完毕    - (void)connectionDidFinishLoading:(NSURLConnection *)connection    {        //解析        NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:_mutableData options:NSJSONReadingAllowFragments error:nil];        _textView.text = [NSString stringWithFormat:@"%@",dict];    }        #pragma mark - 接收错误    - (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error    {            }- (void)didReceiveMemoryWarning {        [super didReceiveMemoryWarning];        // Dispose of any resources that can be recreated.    }      @end
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IOS中get同步异步请求与post同步异步请求
