http请求 get post

- (void)get {

    NSString *name = @"张三";

    NSString *pwd = @"zhang";

   

    

    

    NSString *strUrl = [NSStringstringWithFormat:@"http://127.0.0.1/php/login.php?username=%@&password=%@",name,pwd];

    //对汉字或者空格做百分号转义

    strUrl = [strUrl stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSetURLQueryAllowedCharacterSet]];

    

    

    //当地址中出现空格或者汉字 url返回nil

    NSURL *url = [NSURLURLWithString:strUrl];

    

    

    NSURLRequest *request = [NSURLRequestrequestWithURL:url];

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

        if (connectionError) {

            NSLog(@"连接错误 %@",connectionError);

            return;

        }

        

        //

        NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;

        if (httpResponse.statusCode ==200 || httpResponse.statusCode ==304) {

            //解析数据

            NSDictionary *dic = [NSJSONSerializationJSONObjectWithData:data options:0 error:NULL];

            NSLog(@"%@",dic);

            

        }else{

            NSLog(@"服务器内部错误");

        }

    }];

}

@end

........

- (void)post {

    NSString *strUrl =@"http://127.0.0.1/php/login.php";

    

    NSURL *url = [NSURLURLWithString:strUrl];

    NSMutableURLRequest *request = [NSMutableURLRequestrequestWithURL:url];

    //发送post请求

    request.HTTPMethod = @"post";

    //设置请求体

    NSString *body =@"username=123&password=abc";

    //把字符串转换成NSData对象

    request.HTTPBody = [bodydataUsingEncoding:NSUTF8StringEncoding];

    

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

        if (connectionError) {

            NSLog(@"连接错误 %@",connectionError);

            return;

        }

        

        //

        NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;

        if (httpResponse.statusCode ==200 || httpResponse.statusCode ==304) {

            //解析数据

            NSDictionary *dic = [NSJSONSerializationJSONObjectWithData:data options:0 error:NULL];

            NSLog(@"%@",dic);

        }else{

            NSLog(@"服务器内部错误");

        }

    }];

}