Question

I’m parsing a very simple XML document with XCode. Sometimes it works just fine, other times it returns this:

document.cookie=’lllllll=9bb65648lllllll_9bb65648; path=/’;window.location.href=window.location.href;

Here is my header file:

@interface NewsViewController : UIViewController{


NSXMLParser *rssParser;
NSMutableArray *articles;
NSMutableDictionary *item;
NSString *currentElement;
NSMutableString *ElementValue;
BOOL errorParsing;
}

@property (weak, nonatomic) IBOutlet UILabel *newsText;
@property (retain) NSMutableString *theString;

- (void)parseXMLFileAtURL:(NSString *)URL;
@end

Here is my implementation code:

-(void)viewDidLoad{
 [self parseXMLFileAtURL:@"http://www.domain.com/news.xml"];
}
- (void)parserDidStartDocument:(NSXMLParser *)parser{
NSLog(@"File found and parsing started");
}


- (void)parseXMLFileAtURL:(NSString *)URL
{

NSString *agentString = @"Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_6; en-us) AppleWebKit/525.27.1 (KHTML, like Gecko) Version/3.2.1 Safari/525.27.1";
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:
                                [NSURL URLWithString:URL]];
[request setValue:agentString forHTTPHeaderField:@"User-Agent"];
NSData *xmlFile = [ NSURLConnection sendSynchronousRequest:request returningResponse: nil error: nil ];


articles = [[NSMutableArray alloc] init];
errorParsing=NO;

rssParser = [[NSXMLParser alloc] initWithData:xmlFile];
[rssParser setDelegate:self];

// You may need to turn some of these on depending on the type of XML file you are parsing
[rssParser setShouldProcessNamespaces:NO];
[rssParser setShouldReportNamespacePrefixes:NO];
[rssParser setShouldResolveExternalEntities:NO];

[rssParser parse];


}
- (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError {

NSString *errorString = [NSString stringWithFormat:@"Error code %i", [parseError code]];
NSLog(@"Error parsing XML: %@", errorString);


errorParsing=YES;
}

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
currentElement = [elementName copy];
ElementValue = [[NSMutableString alloc] init];
if ([elementName isEqualToString:@"item"]) {
    item = [[NSMutableDictionary alloc] init];

}

}

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
[ElementValue appendString:string];
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
if ([elementName isEqualToString:@"item"]) {
    [articles addObject:[item copy]];
} else {
    [item setObject:ElementValue forKey:elementName];
    NSLog (@"--%@",ElementValue);
}

}

- (void)parserDidEndDocument:(NSXMLParser *)parser {

if (errorParsing == NO)
{
    NSLog(@"XML processing done!");
    theString=[NSString stringWithFormat:@"%@",ElementValue];
    NSLog (@"Parsed: %@",theString);
} else {
    NSLog(@"Error occurred during XML processing");
}

}

I’m fairly stumped, but I’m sure it must be something simple I can’t see. Any tips?

Answer 1

the response you are trying to parse (probably) is not in XML.

NSLog your xml responses, and see whats being returned by the server when it returns the strange code. Validate the xml before parsing it.