问题
i try to parse within my iPhone SDK 4
http://de.news.search.yahoo.com/news/rss?p=iphone&ei=UTF-8&fl=0&x=wrt
there are some german umlaute
<description><![CDATA[Mehr als die Hälfte der Belegschaft des weltweit größten]]></description>
As I read in another forum as long they are wrapped in CDATA it should be fine.
But in the moment the parser found the element "description" he breaks with:
error parsing XML: Unable to download story feed from web site (Error code 9 ) http://de.news.search.yahoo.com/news/rss?p=iphone&ei=UTF-8&fl=0&x=wrt
The english feeds works fine !? So its something with this umlaute, but what can i do?
greets chris
JUST FOR UNDERSTANDING .. HERE MY WHOLE PARSER
- (void)parseXMLFileAtURL:(NSString *)URL {
aktuelleUrl = URL;
stories = [[NSMutableArray alloc] init];
NSURL *xmlURL = [NSURL URLWithString:aktuelleUrl];
// here, for some reason you have to use NSClassFromString when trying to alloc NSXMLParser, otherwise you will get an object not found error
// this may be necessary only for the toolchain
rssParser = [[NSXMLParser alloc] initWithContentsOfURL:xmlURL];
// Set self as the delegate of the parser so that it will receive the parser delegate methods callbacks.
[rssParser setDelegate:self];
// Depending on the XML document you're parsing, you may want to enable these features of NSXMLParser.
[rssParser setShouldProcessNamespaces:NO];
[rssParser setShouldReportNamespacePrefixes:NO];
[rssParser setShouldResolveExternalEntities:NO];
[rssParser parse];
}
- (void)parserDidStartDocument:(NSXMLParser *)parser{
//NSLog(@"found file and started parsing");
}
- (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError {
NSString * errorString = [NSString stringWithFormat:@"Unable to download story feed from web site (Error code %i ) %@", [parseError code], aktuelleUrl];
NSLog(@"error parsing XML: %@", errorString);
}
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{
NSLog(@"found this element: %@", elementName);
currentElement = [elementName copy];
if ([elementName isEqualToString:@"channel"]) {
channel1item2 = 1;
// clear out our story item caches...
// item = [[NSMutableDictionary alloc] init];
currentTitle = [[NSMutableString alloc] init];
// currentDate = [[NSMutableString alloc] init];
currentSummary = [[NSMutableString alloc] init];
currentLink = [[NSMutableString alloc] init];
}
if ([elementName isEqualToString:@"item"]) {
channel1item2 = 2;
// clear out our story item caches...
item = [[NSMutableDictionary alloc] init];
currentTitle = [[NSMutableString alloc] init];
currentDate = [[NSMutableString alloc] init];
currentSummary = [[NSMutableString alloc] init];
currentLink = [[NSMutableString alloc] init];
currentEncoded = [[NSMutableString alloc] init];
}
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
//NSLog(@"ended element: %@ c1i2: %i", elementName, channel1item2);
if (channel1item2 == 1) {
if (![currentTitle isEqualToString:@""]) { aCurrentTitle = currentTitle; }
if (![currentLink isEqualToString:@""]) { aCurrentLink = currentLink; }
if (![currentSummary isEqualToString:@""]) {aCurrentSummary = currentSummary; }
}
else if ([elementName isEqualToString:@"item"]) {
[item setObject:currentTitle forKey:@"title"];
[item setObject:currentLink forKey:@"link"];
[item setObject:currentSummary forKey:@"summary"];
[item setObject:currentDate forKey:@"date"];
[item setObject:currentEncoded forKey:@"content:encoded"];
[stories addObject:[item copy]];
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
//NSLog(@"found characters: %@", string);
// save the characters for the current item...
if ([currentElement isEqualToString:@"title"]) {
[currentTitle appendString:string];
} else if ([currentElement isEqualToString:@"link"]) {
[currentLink appendString:string];
//NSLog(@"parselink '%@'",string);
} else if ([currentElement isEqualToString:@"description"]) {
[currentSummary appendString:string];
} else if ([currentElement isEqualToString:@"pubDate"]) {
[currentDate appendString:string];
} else if ([currentElement isEqualToString:@"content:encoded"]) {
[currentEncoded appendString:string];
}
else if ([currentElement isEqualToString:@"media:content"]) {
//NSLog(@"mediacontent %@",string);
}
}
- (void)parserDidEndDocument:(NSXMLParser *)parser {
// NSLog(@"all done!");
//NSLog(@"stories array has %d items", [stories count]);
}
回答1:
Perhaps look into -stringWithContentsOfURL:usedEncoding:error: to download the XML:
NSError *error = nil;
NSStringEncoding encoding;
NSString *xmlFeedStr = [NSString stringWithContentsOfURL:[NSURL URLWithString:@"http://de.news.search.yahoo.com/news/rss?p=iphone&ei=UTF-8&fl=0&x=wrt"] usedEncoding:&encoding error:&error];
NSXMLParser *rssParser = [[NSXMLParser alloc] initWithData:[xmlFeedStr dataUsingEncoding:encoding allowLossyConversion:YES]];
...
[rssParser release];
回答2:
From the documentation:
NSXMLParserInvalidCharacterError = 9
Perhaps the document is not really encoded in UTF-8?
回答3:
Now I solved it different. Wrote my own XML parser just simple for my needs and with the following routine, i found in some forum, i encode the xml string. Also I marked the answer above as 'accepted' as it lead me into the right direction.
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)s {
[resultString appendString:s];
}
- (NSString*)convertEntiesInString:(NSString*)s {
resultString = [[NSMutableString alloc] init];
if(s == nil) {
//NSLog(@"ERROR : Parameter string is nil");
}
NSString* xmlStr = [NSString stringWithFormat:@"<d>%@</d>", s];
NSData *data = [xmlStr dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];
NSXMLParser* xmlParse = [[NSXMLParser alloc] initWithData:data];
[xmlParse setDelegate:self];
[xmlParse parse];
NSString* returnStr = [[NSString alloc] initWithFormat:@"%@",resultString];
return returnStr;
}
objectsResultStr = [self convertEntiesInString:orgString]];
来源：https://stackoverflow.com/questions/3352027/iphone-nsxmlparser-error-9