将NSXMLParser与CDATA结合使用 [英] Using NSXMLParser with CDATA

问题描述

我正在使用NSXMLParser解析RSS feed，它对于标题和其他字符串都可以正常工作，但是其中一个元素是像

I'm parsing an RSS feed with NSXMLParser and it's working fine for the title and other strings but one of the elements is an image thats like

<!CDATA <a href="http:image..etc> 

如何在表格视图中将其添加为单元格图像?我可以将其定义为图像类型吗?

How do I add that as my cell image in my table view? Would I define that as an image type?

这就是我用来解析的内容:

This is what i'm using to do my parsing:

- (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:@"item"]) {
    // 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];
}

}

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{     
//NSLog(@"ended element: %@", elementName);
if ([elementName isEqualToString:@"item"]) {
    // save values to an item, then store that item into the array...
    [item setObject:currentTitle forKey:@"title"];
    [item setObject:currentLink forKey:@"link"];
    [item setObject:currentSummary forKey:@"description"];
    [item setObject:currentDate forKey:@"date"];

    [stories addObject:[item copy]];
    NSLog(@"adding story: %@", currentTitle);
}

}

- (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];
} else if ([currentElement isEqualToString:@"description"]) {
    [currentSummary appendString:string];
} else if ([currentElement isEqualToString:@"pubDate"]) {
    [currentDate appendString:string];
}

}

推荐答案

CDATA的要点是，其中的任何内容都不会被视为XML文档的一部分. 因此，如果CDATA中有标签，则解析器将忽略它们.

The point of CDATA is that anything within it is not treated as part of the XML document. So if you have tags in CDATA the parser will ignore them.

我猜这个CDATA在description元素中.因此，您需要手动或通过解析器的另一个实例从"description"元素中提取标签.

I'm guessing this CDATA is in the description element. So you'll need to extract the tags from the "description" element, either manually or via another instance of a parser.

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