GDXM下载地址http://download.csdn.net/detail/zjcxy3150/4660938

将GdataxMLNode.h,GdataxMLNode.m,xpath三个文件拖入项目中（是MRC如果你的项目是ARC需要关闭该.m文件，变为MRC(加-fno-objc-arc)）

找到Search Paths段，在Header Search Paths设置值为：/usr/include/libxml2

找到Linking段，在Other Linker Flags设置中填上：-lxml2

//苹果官方请求

NSURL *url=[NSURL URLWithString:@"http://www.raywenderlich.com/downloads/Party.xml"];

NSURLRequest *request=[NSURLRequest requestWithURL:url];

[NSURLConnection connectionWithRequest:request delegate:self];

#pragma mark--

#pragma mark NSURLConnection代理方法

//管道建立成功

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{

netData.length=0;

}

//接收数据

-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{

[netData appendData:data];

}

/*

<Party>

<Player>

<Name>Butch</Name>

<Level>1</Level>

<Class>Fighter</Class>

</Player>

<Player>

<Name>Shadow</Name>

<Level>2</Level>

<Class>Rogue</Class>

</Player>

<Player>

<Name>Crak</Name>

<Level>3</Level>

<Class>Wizard</Class>

</Player>

</Party>

*/

//接收完成

-(void)connectionDidFinishLoading:(NSURLConnection *)connection{

//解析xml

GdataxMLDocument *doc=[[GdataxMLDocument alloc]initWithData:netData options:0 error:Nil];

// NSLog(@"doc is %@",doc.rootElement.XMLString);

NSArray * partyMembers = [doc.rootElement nodesForXPath:@"//Party/Player" error:nil];

//NSLog(@"name is %@",names);

for (GdataxMLElement * partyMember in partyMembers) {

NSArray * names = [partyMember nodesForXPath:@"Name" error:nil];

if (names.count > 0) {

GdataxMLElement * firstName = (GdataxMLElement *)[names objectAtIndex:0];

NSLog(@"xml is %@",firstName.stringValue);

}

else

{

continue;

}

}

//管道建立失败

-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{

NSLog(@"%@",error);

}