#define BASEURL "https://www.workneed.com"
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat: @"%s/index.html",BASEURL]];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:@"GET"];
[request addValue:@"text-plain" forHTTPHeaderField:@"Content-Type"];
[request setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration];
//返回响应；注意是异步
NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
if (error) {
//请求失败，打印错误信息
NSLog(@"请求失败 :%@",error.localizedDescription);
}else{
//请求成功，NSData转成NSString
NSString *resp =[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
//看一下收到的数据
NSLog(@"resp=%@",resp);
//在主线程中刷新界面。
dispatch_async(dispatch_get_main_queue(), ^{
//刷新界面的语句一定要写在这里
});
}
}];
[task resume];//task开始执行
