#import "ViewController.h"

 @interface ViewController ()

 @end

 @implementation ViewController

 #pragma mark ----------------------

 #pragma mark Events

 -(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event

 {

     [self post];

 }

 #pragma mark ----------------------

 #pragma mark Methods

 -(void)get

 {

     NSString *urlStr = @"http://120.25.226.186:32812/login2?username=小码哥&pwd=520it&type=JSON";

     NSLog(@"转码前: %@",urlStr);

     //中文转码处理：请求接口有中文

     urlStr =  [urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

     NSLog(@"转码后: %@",urlStr);

     //1.url

     NSURL *url = [NSURL URLWithString:urlStr];

     //http://120.25.226.186:32812/login2?username=%E5%B0%8F%E7%A0%81%E5%93%A5&pwd=520it&type=JSON

     NSLog(@"url------%@",url);

     //2.urlrequest

     NSURLRequest *request = [NSURLRequest requestWithURL:url];

     //3.connect

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

         //容错处理

         if (connectionError) {

             NSLog(@"%@",connectionError);

             return ;

         }

         //4.解析

         NSLog(@"%@",[[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding]);

     }];

 }

 -(void)post

 {

     //观察URL中是否有中文,如果有中文则需要转码

     NSString *urlStr = @"http://120.25.226.186:32812/login2";

     //username=小码哥&pwd=520it&type=JSON

     //1.url

     NSURL *url = [NSURL URLWithString:urlStr];

     //2.urlrequest

     NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

     //2.1 post

     request.HTTPMethod = @"POST";

     //2.2 body

     request.HTTPBody = [@"username=小码哥&pwd=520it&type=JSON" dataUsingEncoding:NSUTF8StringEncoding];

     //3.connect

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

         //容错处理

         if (connectionError) {

             NSLog(@"%@",connectionError);

             return ;

         }

         //4.解析

         NSLog(@"%@",[[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding]);

     }];

 }

 @end