我试图点击REST api以查看用户是否有效。我知道connectionDidFinishLoading
运行,但我不确定如何检查响应(xml)。请指教。
signIn
功能让球滚动
- (IBAction)signIn:(id)sender;
{
[emailError setHidden:YES];
if([emailAddressTxt text] && [passwordTxt text]) {
// send user/pass to server for validation
if([self NSStringIsValidEmail:[emailAddressTxt text]]) {
NSString *post = [NSString stringWithFormat:@"Email=%@&Password=%@", emailAddressTxt.text, passwordTxt.text];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:@"http://www.mySite.com/validate.php"]];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setHTTPBody:postData];
[NSURLConnection connectionWithRequest:request delegate:self];
}
} else {
// give error dialogue
[emailError setText:@"User not found"];
[emailError setHidden:NO];
}
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
//[signInData setLength:0];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)d {
//[signInData appendData:d];
// updated to:
signInData = (NSMutableData *)d;
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
// Fail..
[emailError setText:@"Connection Error"];
[emailError setHidden:NO];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
NSString *responseText = [[NSString alloc] initWithData:signInData encoding:NSUTF8StringEncoding];
NSLog(@"%@", @"check");
NSLog(@"%@", responseText);
}
// an example response would be:
// <string xmlns="http://thedomain.com/">invalid login</string>
答案 0 :(得分:2)
通常要解析XML
你会使用NSXMLParser
,但是字符串响应很简单,如“<string xmlns="http://thedomain.com/">invalid login</string>
”我假设有效登录看起来像这样:“{ {1}}“
如果是这种情况,您只需查找包含字符串<string xmlns="http://thedomain.com/">valid login</string>
但不包含@"valid login"
@"invalid login"
如果(甚至更好)成功的回答是“if (([responseText rangeOfString:@"invalid login"].location == NSNotFound) && ([responseText rangeOfString:@"valid login"].location != NSNotFound)){
// Congrats valid
}
”,则if语句变得更容易理解。
<string xmlns="http://thedomain.com/">successful login</string>