ios开发-get和post

直接上代码:

示例:(在storyboard中拖两个控件textField、一个UIButton,连线(userNameText、password、login))

@interface ViewController()

@property(nonatomic,weak)IBOutlet UITextField *userNameText;

@property(nonatomic,weak)IBOutlet UITextField *passWord;

@end

 

-(IBAction)login

{

  [self postLoginWithUserName:self.userNameText.text  password:self.passWord.text];

}

post登陆

-(void)postLoginWithUserName:(NSString *)userName  password:(NSString *)password
{

  //1.url

  NSURL *url = [NSURL URLWithString:@"http://本机IP/login.php"];

  //2.request

  NSMutableNSURLRequest *request = [NSMutableNSURLRequest requestWithURL:url];

  //对于post请求的数据题要和request一起提交

  request.HTTPMethod = @"POST";

 

  //准备数据题

  NSString *bodyString = [NSString *stringWithFormat:@"username=%@&password=%@",username,password];

  //设置二进制数据

  request.HTTPBody = [bodyString dataUsingEncoding:NSUTF8StringEncoding];

  

 

  //3.发送网络连接,获取二进制数据

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

 NSString *result = [NSString alloc]initWithData:data encoding:NSUTF8Encoding];

}

 

 

 

 

get登陆

-(void)getLoginWithUserName:(NSString *)userName  password:(NSString *)password

{

  //1.url

  NSString *urlString = [NSString stringWithFormat:@"http://本机IP地址/login.php?username = %@&password = %@",userName,password];

  //百分号转义

  urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

  NSURL *url = [NSURL URLWithString:urlString];

  //2.request

  NSURLRequest *request = [NSURLRequest requestWithURL:url];

  //3.发送网络连接,获取二进制数据

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

  NSString *result = [NSString alloc]initWithData:data encoding:NSUTF8Encoding];

}

 

小结:

1.

get:

http://本机IP地址/login.php?username = %@&password = %@

http://ip地址/登陆的脚本文件?(后面有参数)参数变量名 = 参数数值&(继续接参数)变量名 = 数值

post

http://ip地址/登陆的脚本

2.request

get:什么都不需要处理,因为参数已经在URL中指定了

post:指定访问方法

  HTTPMethod = @"post";

  

  指定二进制数据

  HTTPBody = 参数字符串的二进制数据

 

3.NSURLConnection 异步

get和post一样

 

在实际网络开发中,真正会发生变化的地方就在请求

 

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