Iphone 使用asihttprequest登录网站

当我试图登录到我制作的一个简单网页时，你在一个-（iAction）{}中有代码

当我按下按钮时，它应该得到数据

这是我的密码

-(IBAction)fetchData:(id)sender {
NSURL *url = [NSURL URLWithString:@"http://rssit.site90.com/login.php"];
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
[request setRequestMethod:@"POST"];
[request addPostValue:@"" forKey:@"username"];
[request addPostValue:@"" forKey:@"password"];


[request setDelegate:self];
[request startAsynchronous];
NSLog(@"%d, %@", request.responseStatusCode, [request responseString]);

}

当我运行它时，它返回0，（null），我查看了asihttprequest的头文件，这意味着不需要身份验证？但那个网站上有一个登录名

---

我输入了一个用户名和密码，但我没有在这里列出它

重写代码，如下所示，答对了

-(IBAction)fetchData:(id)sender 
{
    NSURL *url = [NSURL URLWithString:@"http://rssit.site90.com/login.php"];
    ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
    [request setRequestMethod:@"POST"];
    [request addPostValue:@"" forKey:@"username"];
    [request addPostValue:@"" forKey:@"password"];
    [request setDelegate:self];
    [request startAsynchronous];

    //Add finish or failed selector
    [request setDidFinishSelector:@selector(requestLoginFinished:)];
    [request setDidFailSelector:@selector(requestLoginFailed:)];

    NSLog(@"%d, %@", request.responseStatusCode, [request responseString]);

}

- (void)requestLoginFinished:(ASIHTTPRequest *)request
{
//Check response of request here and act accordingly
NSString *yourResponse = [request responseString]; //corrected here please change it to responseString
//Parse above response and check it.
}


- (void)requestLoginFailed:(ASIHTTPRequest *)request
{
//some error was there processing request 
//Check error 
NSError *error = [request error];
NSLog(@"Failed ---> %@",[error localizedDescription]);
}

---

当您发出请求时，您需要等待直到请求完成，尽管您发出的是异步请求，因为这是登录信息，您需要等待响应到来。

您可能需要查找“异步”的含义；-）当我尝试由于未捕获的异常“NSInvalidArgumentException”而终止应用程序时，原因：“-[ASIFormDataRequest response]：未识别的选择器发送到instanceSorry abt，它应该是[request responseString]。我已经更新了我的答案。请再次检查。好的，当我这样做时，它所做的只是显示登录页面的html代码，但它不登录。它在NSLog中打印什么？您收到正确的响应了吗？对于http代码，我收到200，然后我只收到登录页面html代码，这正常吗？既然我有了登录凭据，我该如何使它前进到下一页？