使用AFNetworking解析XML文件
问题描述:
我正在使用Yahoo API制作一个小天气应用程序。这个API给我一个XML文件。 我现在的问题是如何解析这个文件? 这是我迄今为止的代码。使用AFNetworking解析XML文件
AFXMLRequestOperation *operation = [AFXMLRequestOperation XMLParserRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, NSXMLParser *XMLParser) {
NSLog(@"success");
XMLParser.delegate = self;
[XMLParser parse];
NSLog(@"xmlParser is %@",XMLParser);
} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, NSXMLParser *XMLParser) {
NSLog(@"failure with error %@",error);
}];
您可以通过here找到该XML文件。
。希望有人能帮助我
答
如果您正在寻找解析使用的NSXMLParser你就需要有一个实现NSXMLParserDelegate类个XML。您可以使用您的ViewController此:
@interface ViewController : UIViewController <NSXMLParserDelegate>
然后使用该协议,当你运行[XMLParser parse]
你可以解析这个XML提供的SAX方法。这是给你的XML的例子:
- (IBAction) makeRequest:(id)sender
{
NSLog(@"Making request");
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://weather.yahooapis.com/forecastrss?w=2442047&u=c"]];
AFXMLRequestOperation *operation = [AFXMLRequestOperation XMLParserRequestOperationWithRequest:request success:^(NSURLRequest *request, NSHTTPURLResponse *response, NSXMLParser *XMLParser) {
XMLParser.delegate = self;
[XMLParser parse];
} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, NSXMLParser *XMLParser) {
NSLog(@"failure with error %@",error);
}];
[operation start];
}
#pragma mark - Parsing lifecycle
- (void)startTheParsingProcess:(NSData *)parserData
{
NSXMLParser *parser = [[NSXMLParser alloc] initWithData:parserData]; //parserData passed to NSXMLParser delegate which starts the parsing process
[parser setDelegate:self];
[parser parse]; // starts the event-driven parsing operation.
}
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict
{
if ([elementName isEqualToString:@"yweather:astronomy"])
{
NSLog(@"Sunrise: %@, Sunset: %@", [attributeDict valueForKey:@"sunrise"], [attributeDict valueForKey:@"sunset"]);
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
self.tmpInnerTagText = string; // Make a temp NSString to store the text in-between tags
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if ([elementName isEqualToString:@"title"])
{
NSLog(@"%@", self.tmpInnerTagText);
}
if ([elementName isEqualToString:@"description"])
{
NSLog(@"%@", self.tmpInnerTagText);
}
}
- (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError
{
NSLog(@"Paser Error = %@", parseError);
//TODO: Create Alert message error
}
也得到AFNetworking支持您使用我不得不添加“应用程序/ RSS + XML”到下面从这个网站的说明acceptableContentTypes的RSS XML:http://www.suushmedia.com/simple-rss-reader-with-afnetworking/
希望这有助于
答
更好的解决方案:我发现here
NSPropertyListFormat format;
NSArray *myObjects = [NSPropertyListSerialization propertyListWithData:responseObject options:NSPropertyListMutableContainers format:&format error:NULL];
//If the root object of the plist is dictionary
NSDictionary *myObjects = [NSPropertyListSerialization propertyListWithData:responseObject options:NSPropertyListMutableContainers format:&format error:NULL];
看看这里 - http://*.com/questions/12147883/解析的XML-从-的NSString到获得值 – 2013-02-20 20:07:15