这里主要介绍一下由Google提供的一种在IOS平台上进行XML解析的开源库GdataxML，可以到http://code.google.com/p/gdata-objectivec-client/source/browse/trunk/Source/XMLSupport/下载源码，下载下来后进入文件夹找到XMLSupport文件夹，将里面的GdataxMLNode.h和GdataxMLNode.m文件拖拽到项目

注：

1.targets ->build settings 的other linker flags 添加字段 -lxml2

2.targets ->build settings 的headersearch Paths 添加字段/usr/include/libxml2

3.导入 libxml2.dylib 系统库

例如解析:

<?xml version="1.0" encoding="utf-8"?>
<Users>
    <User id="001">
        <name>Ryan</name>
        <name>hjhj</name>
        <age>24</age>
    </User>
    <User id="002">
        <name>Tang</name>
        <name>Tangss</name>
        <age>23</age>
    </User>
    <User id="003">
        <name>Tanssg</name>
        <name>Tansdsg</name>
        <age>2ssss3</age>
    </User>
</Users>

//获取工程目录xml文件
    NSString *filePach = [[NSBundle mainBundle]pathForResource:@"Users" ofType:@"xml"];
    NSData *xmlData = [[NSData alloc]initWithContentsOfFile:filePach];
    
    //使用nsdata对象初始化
    GdataxMLDocument *doc = [[GdataxMLDocument alloc]initWithData:xmlData options:0 error:nil];
    
    //获得跟节点(Users)
    GdataxMLElement *rootElement = [doc rootElement];
    
    //获取跟节点下的节点
    NSArray *users = [rootElement elementsForName:@"User"];

    
    for (GdataxMLElement *user  in users) {
        //user节点属性
         NSString *userId =[[user attributeForName:@"id"]stringValue];
        NSLog(@"userId = %@",userId);
        
        //获取name节点的值
       GdataxMLElement *nameElement = [[user elementsForName:@"name"]objectAtIndex:1];
        NSString *name = [nameElement stringValue];
        NSLog(@"name = %@",name);
        
        //获取age节点的值
        GdataxMLElement *ageElement = [[user elementsForName:@"age"]objectAtIndex:0];
        NSString *age = [ageElement stringValue];
        NSLog(@"age = %@",age);
        NSLog(@"===================");
    }