iPhone开发技巧之网络篇（1）— 解析XML A

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<?xml version="1.0" encoding="UTF-8"?>
<users>
<user name="hoge" age="20" />
<user name="fuga" age="30" />
</users>

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static NSString *feedURLString = @"http://www.yifeiyang.net/test/test.xml";

- (void)parserDidStartDocument:(NSXMLParser *)parser
{
// 解析开始时的处理
}

- (void)parseXMLFileAtURL:(NSURL *)URL parseError:(NSError **)error
{
NSXMLParser *parser = [[NSXMLParser alloc] initWithContentsOfURL:URL];
[parser setDelegate:self];
[parser setShouldProcessNamespaces:NO];
[parser setShouldReportNamespacePrefixes:NO];
[parser setShouldResolveExternalEntities:NO];
[parser parse];
NSError *parseError = [parser parserError];
if (parseError && error) {
*error = parseError;
}
[parser release];
}

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
// 元素开始句柄
if (qName) {
elementName = qName;
}
if ([elementName isEqualToString:@"user"]) {
// 输出属性值
NSLog(@"Name is %@ , Age is %@", [attributeDict objectForKey:@"name"], [attributeDict objectForKey:@"age"]);
}
}

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
// 元素终了句柄
if (qName) {
elementName = qName;
}
}

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
// 取得元素的text
}

NSError *parseError = nil;
[self parseXMLFileAtURL:[NSURL URLWithString:feedURLString] parseError:&parseError];