#import "ViewController.h"
#import "DDXML.h"
#import "User.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view,typically from a nib.
    
    /*
     xml的元素：开始标签到结束标签的部分。
     */
    
//    [NSURL URLWithString:@"http://www"];
//    [NSURL fileURLWithPath:@"/Users/xxx"];
    //1.读取文件内容
    NSString *path = [[NSBundle mainBundle] pathForResource:@"user.xml" ofType:nil];
    NSString *content = [NSString stringWithContentsOfURL:[NSURL fileURLWithPath:path] encoding:NSUTF8StringEncoding error:nil];
    
    //2.解析
    /*
     initWithXMLString:要解析的字符串
     options:预保留参数
     */
    //xml解析器
    DDXMLDocument *document = [[DDXMLDocument alloc] initWithXMLString:content options:0 error:nil];
    //根据xpath找指定节点
    NSArray *elements = [document nodesForXPath:@"/Users/User" error:nil];
    
    //User
    for (DDXMLElement *userElement in elements)
    {
        //[父元素对象 elementsForName:子元素名字];
        //name元素
        DDXMLElement *nameElement = [userElement elementsForName:@"name"][0];
        //age元素
        DDXMLElement *ageElement = [userElement elementsForName:@"age"][0];
        
        NSString *name = [nameElement stringValue];
        NSString *age = [ageElement stringValue];
        
        NSLog(@"--- %@ -- %@",name,age);
        
    }
   
    
}

//解析1.xml
- (void)parse1XMLFile
{
    //1.读取文件内容
    NSString *path = [[NSBundle mainBundle] pathForResource:@"1.xml" ofType:nil];
    NSString *content = [NSString stringWithContentsOfURL:[NSURL fileURLWithPath:path] encoding:NSUTF8StringEncoding error:nil];
    
    //2.解析
    /*
     initWithXMLString:要解析的字符串
     options:预保留参数
     */
    //xml解析器
    DDXMLDocument *document = [[DDXMLDocument alloc] initWithXMLString:content options:0 error:nil];
    
    /*
     root/list/list/list
     */
    
    //root/category/list/list/list
    NSArray *elements = [document nodesForXPath:@"root/category/list/list/list" error:nil];
    
    //遍历每个list元素
    for (DDXMLElement *element in elements)
    {
        //获取节点  key=value
        DDXMLNode *node = [element attributeForName:@"dname"];
        //取属性值
        NSString *name = [node stringValue];
        
        NSLog(@"%@",name);
    }
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end