ios-程序中模拟GET和POST请求登录

NSString *name = @"哈";
NSString *pwd = @"123";

NSString *strUrl = [NSString stringWithFormat:@"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，URLQuery就是对?之后进行的百分号转义操作。
strUrl = [strUrl stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];

//当地址中出现空格或者汉字 url返回nil,所以我们需要在上面给它做一次百分号转义操作
NSURL *url = [NSURL URLWithString:strUrl];

NSURLRequest *request = [NSURLRequest requestWithURL:url];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] 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 = [NSJSONSerialization JSONObjectWithData:data options:0 error:NULL];
NSLog(@"%@",dic);

}else{
NSLog(@"服务器内部错误");
}
}];

}

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

NSURL *url = [NSURL URLWithString:strUrl];
//如果需要改变请求的方式就要把request的类变成是mutableRequest
 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL: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，以UTF-8编码的形式
request.HTTPBody = [body dataUsingEncoding:NSUTF8StringEncoding];

[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] 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 = [NSJSONSerialization JSONObjectWithData:data options:0 error:NULL];
NSLog(@"%@",dic);
}else{
NSLog(@"服务器内部错误");
}
}];