Iphone NSXMLParser不'；不要忽略CDATA
我是ios开发的新手，我尝试解析RSS文件（xml） 这是xml:（很抱歉使用这种语言）Iphone NSXMLParser不'；不要忽略CDATA,iphone,ios,xcode,xcode4.5,nsxmlparser,Iphone,Ios,Xcode,Xcode4.5,Nsxmlparser,我是ios开发的新手，我尝试解析RSS文件（xml） 这是xml:（很抱歉使用这种语言） 一般 在一次拖拉机事故中丧生，风帆冲浪者受重伤 < ! [CDATA[ ] ] > 50多岁的拖拉机司机在Kfar Yuval附近翻车并被困在下面。在内塔尼亚，一名风帆冲浪者因强风投掷石块而受重伤，在内塔尼亚，一名风帆冲浪者受轻伤 http://www.ynet.co.il/articles/0 ，7340，L-4360016，00.html 2013年3月22日星期五17:10:15+0200 h
一般
在一次拖拉机事故中丧生，风帆冲浪者受重伤
< ! [CDATA[
- (void)parserDidStartDocument:(NSXMLParser *)parser
{
self.titles = [[NSMutableArray alloc]init];
self.descriptions = [[NSMutableArray alloc]init];
self.links = [[NSMutableArray alloc]init];
}
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
if ([elementName isEqualToString:@"item"]) {
isItem = YES;
}
if ([elementName isEqualToString:@"title"]) {
isTitle=YES;
self.titlesString = [[NSMutableString alloc]init];
}
if ([elementName isEqualToString:@"description"]) {
isDesription = YES;
self.descriptionString = [NSMutableString string];
self.data = [NSMutableData data];
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
if(isItem && isTitle){
[self.titlesString appendString:string];
}
if (isItem && isDesription) {
if (self.descriptionString)
[self.descriptionString appendString:string];
}
}
- (void)parser:(NSXMLParser *)parser foundCDATA:(NSData *)CDATABlock
{
if (self.data)
[self.data appendData:CDATABlock];
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if ([elementName isEqualToString:@"item"]) {
isItem = NO;
[self.titles addObject:self.titlesString];
[self.descriptions addObject:self.descriptionString];
}
if ([elementName isEqualToString:@"title"]) {
isTitle=NO;
}
if ([elementName isEqualToString:@"description"]) {
NSString *result = [self.descriptionString stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
NSLog(@"string=%@", result);
if ([self.data length] > 0)
{
NSString *htmlSnippet = [[NSString alloc] initWithData:self.data encoding:NSUTF8StringEncoding];
NSString *imageSrc = [self firstImgUrlString:htmlSnippet];
NSLog(@"img src=%@", imageSrc);
[self.links addObject:imageSrc];
}
self.descriptionString = nil;
self.data = nil;
}
}
- (NSString *)firstImgUrlString:(NSString *)string
{
NSError *error = NULL;
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"(<img\\s[\\s\\S]*?src\\s*?=\\s*?['\"](.*?)['\"][\\s\\S]*?>)+?"
options:NSRegularExpressionCaseInsensitive
error:&error];
NSTextCheckingResult *result = [regex firstMatchInString:string
options:0
range:NSMakeRange(0, [string length])];
if (result)
return [string substringWithRange:[result rangeAtIndex:2]];
return nil;
}
@end
-（void）parserdistartdocument:（NSXMLParser*）解析器
{
self.titles=[[NSMutableArray alloc]init]；
self.descriptions=[[NSMutableArray alloc]init]；
self.links=[[NSMutableArray alloc]init]；
}
-（void）parser:（NSXMLParser*）parser didStartElement:（NSString*）elementName namespaceURI:（NSString*）namespaceURI qualifiedName:（NSString*）qName属性：（NSDictionary*）attributeDict
{
if（[elementName IsequalString:@“item”]）{
isItem=是；
}
if（[elementName IsequalString:@“title”]）{
isTitle=是；
self.titleString=[[NSMutableString alloc]init]；
}
if（[elementName IsequalString:@“description”]）{
isDesription=YES；
self.descriptionString=[NSMutableString]；
self.data=[NSMutableData]；
}
}
-（void）解析器：（NSXMLParser*）解析器查找字符：（NSString*）字符串{
如果（isItem&&isTitle）{
[self.titleString appendString:string]；
}
如果（isItem&&ISDeDescription）{
if（自我描述字符串）
[self.descriptionString appendString:string]；
}
}
-（void）解析器：（NSXMLParser*）解析器foundCDATA:（NSData*）CDATA块
{
if（自我数据）
[self.data appendData:CDATA块]；
}
-（void）parser:（NSXMLParser*）parser didEndElement:（NSString*）elementName namespaceURI:（NSString*）namespaceURI qualifiedName:（NSString*）qName
{
if（[elementName IsequalString:@“item”]）{
isItem=否；
[self.titles addObject:self.titleString]；
[self.descriptions添加对象：self.descriptionString]；
}
if（[elementName IsequalString:@“title”]）{
isTitle=否；
}
if（[elementName IsequalString:@“description”]）{
NSString*result=[self.descriptionString-ByTrimmingCharactersInSet:[NSCharacterSet-whitespaceAndNewlineCharacterSet]]；
NSLog（@“string=%@”，结果）；
如果（[self.data length]>0）
{
NSString*htmlSnippet=[[NSString alloc]initWithData:self.data encoding:NSUTF8StringEncoding]；
NSString*imageSrc=[self-firstImgUrlString:htmlSnippet]；
NSLog（@“img src=%@”，imageSrc）；
[self.links addObject:imageSrc]；
}
self.descriptionString=nil；
self.data=nil；
}
}
-（NSString*）第一个imgurlstring:（NSString*）字符串
{
n错误*错误=NULL；
NSRegularExpression*regex=[NSRegularExpression regular expression with pattern:@“（）+？”
选项：nsregularexpressioncase不敏感
错误：&错误]；
NSTextCheckingResult*结果=[regex firstMatchInString:字符串
选项：0
范围：NSMakeRange（0，[字符串长度]）；
如果（结果）
返回[string substringWithRange:[结果范围索引：2]]；
返回零；
}
@结束
foundCDATA描述foundCharactersfoundCDATACDATAfoundCharactersfoundCharactersCDATAfoundCDATAimg- (NSString *)firstImgUrlString:(NSString *)string
{
NSError *error = NULL;
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"(<img\\s[\\s\\S]*?src\\s*?=\\s*?['\"](.*?)['\"][\\s\\S]*?>)+?"
options:NSRegularExpressionCaseInsensitive
error:&error];
NSTextCheckingResult *result = [regex firstMatchInString:string
options:0
range:NSMakeRange(0, [string length])];
if (result)
return [string substringWithRange:[result rangeAtIndex:2]];
return nil;
}
foundCDATA描述foundCharactersfoundCDATACDATAfoundCharactersfoundCharactersCDATAfoundCDATAimg- (NSString *)firstImgUrlString:(NSString *)string
{
NSError *error = NULL;
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"(<img\\s[\\s\\S]*?src\\s*?=\\s*?['\"](.*?)['\"][\\s\\S]*?>)+?"
options:NSRegularExpressionCaseInsensitive
error:&error];
NSTextCheckingResult *result = [regex firstMatchInString:string
options:0
range:NSMakeRange(0, [string length])];
if (result)
return [string substringWithRange:[result rangeAtIndex:2]];
return nil;
}
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
if ([elementName isEqualToString:@"description"])
{
self.string = [NSMutableString string];
self.data = [NSMutableData data];
}
}
- (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError
{
NSLog(@"%s, parseError=%@", __FUNCTION__, parseError);
}
// In my standard NSXMLParser routine, I leave self.string `nil` when not parsing
// a particular element, and initialize it if I am parsing. I do it this way
// so only my `didStartElement` and `didEndElement` need to worry about the particulars
// and my `foundCharacters` and `foundCDATA` are simplified. But do it however you
// want.
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
if (self.string)
[self.string appendString:string];
}
- (void)parser:(NSXMLParser *)parser foundCDATA:(NSData *)CDATABlock
{
if (self.data)
[self.data appendData:CDATABlock];
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if ([elementName isEqualToString:@"description"])
{
// get the text (non-CDATA) portion
// you might want to get rid of the leading and trailing whitespace
NSString *result = [self.string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
NSLog(@"string=%@", result);
// get the img out of the CDATA
if ([self.data length] > 0)
{
NSString *htmlSnippet = [[NSString alloc] initWithData:self.data encoding:NSUTF8StringEncoding];
NSString *imageSrc = [self firstImgUrlString:htmlSnippet];
NSLog(@"img src=%@", imageSrc);
}
// once I've saved the data where I want to save it, I `nil` out my
// `string` and `data` properties:
self.string = nil;
self.data = nil;
}
}
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
if([currentElement isEqualToString:@"img"]) {
NSLog(@"%@",[attributeDict objectForKey:@"src"]);
}
}
- (void)parser:(NSXMLParser *)parser foundCDATA:(NSData *)CDATABlock
{
NSMutableString *cdstring = [[NSMutableString alloc] initWithData:CDATABlock encoding:NSUTF8StringEncoding];
}
<div>
<a href='http://www.ynet.co.il/articles/0,7340,L-4360016,00.html'>
<img src='http://www.ynet.co. il/PicServer3/2012/11/28/4302844/YOO_8879_a.jpg ' alt=' photo: Yaron Brener ' title=' Amona ' border='0' width='116 ' height='116'>
</ a>
</ div>
]]>
htmlContent = [NSString stringWithFormat:@"%@", cdstring];
[webView loadHTMLString:htmlContent baseURL:nil];