KissXML的使用

使用KissXML前的操作

 1. 使用KissXML必须导入libxml2.2.dylib框架 2. 在Header Research Paths中添加路径:/usr/include/libxml2

创建

    //创建根元素结点    GDataXMLElement *rootElement = [GDataXMLElement elementWithName:@"China"];    NSArray *provinces = @[@"Henan", @"Zhejiang", @"Jiangsu"];    NSArray *citys = @[@[@"郑州", @"洛阳"],                       @[@"杭州", @"金华", @"台州"],                       @[@"南京", @"苏州", @"无锡"]];    for (int i = 0; i < 3; i++) {        //创建第二层元素结点        GDataXMLElement *province = [GDataXMLElement elementWithName:@"province"];        //创建第二层元素结点的属性结点        GDataXMLElement *provinceName = [GDataXMLElement elementWithName:@"name" stringValue:provinces[i]];        //第二层元素结点添加属性结点        [province addAttribute:provinceName];        for (NSString *string in citys[i]) {            //创建第三层元素结点            GDataXMLElement *city = [GDataXMLElement elementWithName:@"city" stringValue:string];            //第二层元素结点添加子节点(第三层元素结点)            [province addChild:city];        }        //根元素结点添加子节点(第二层元素结点)        [rootElement addChild:province];    }    GDataXMLDocument *doc = [[GDataXMLDocument alloc] initWithRootElement:rootElement];    [doc setVersion:@"2.0"];    [doc setCharacterEncoding:@"UTF-8"];    NSData *data = doc.XMLData;    NSString *filePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/city.xml"];    NSLog(@"%@", filePath);    [data writeToFile:filePath atomically:YES];

读取

forin遍历

- (IBAction)readXML:(id)sender {    //读取文件    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"xml" ofType:@"xml"];    NSData *data = [NSData dataWithContentsOfFile:filePath];    //解析成文档    GDataXMLDocument *document = [[GDataXMLDocument alloc] initWithData:data error:nil];    //获取根元素结点    GDataXMLElement *rootElement = document.rootElement;    //获取根元素结点的属性结点    GDataXMLNode *rootNode = [rootElement attributeForName:@"name"];    //打印根元素结点的属性结点的名字和字符串值    NSLog(@"%@", rootNode.stringValue);    //在根元素结点的子节点数组中遍历第二层元素结点    for (GDataXMLElement *element in rootElement.children) {        //获取第二层元素结点的属性结点        GDataXMLNode *node1 = [element attributeForName:@"name"];        NSLog(@"%@", node1.stringValue);         //在第二层元素结点的子节点数组中遍历第三层元素结点        for (GDataXMLElement *sonElement in element.children) {            //在第三层元素结点的子节点数组中遍历第四层元素结点            for (GDataXMLNode *grandsonElement in sonElement.children) {                //打印第四层元素结点的名字和字符串值                NSLog(@"%@:%@", grandsonElement.name, grandsonElement.stringValue);            }        }    }}

XPath遍历

//遍历与属性有关的结点/*//@country  //所有是country的属性结点//cd[@country]  //所有含有country属性的cd元素结点//cd[@*]    //所有含有属性的元素结点//cd[@country=\"USA\"]  //所有含有country="USA"属性的cd元素结点*/- (IBAction)xpathReadXML:(UIButton *)sender {    //读取XML文件    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"xml2" ofType:@"xml"];    NSData *data = [NSData dataWithContentsOfFile:filePath];    //解析XML文档    GDataXMLDocument *document = [[GDataXMLDocument alloc] initWithData:data error:nil];    //创建XPath路径    NSString *XPath = @"//cd[@*]";    //查找符合XPath路径的所有结点    NSArray *array = [document nodesForXPath:XPath error:nil];    //遍历所有结点    for (GDataXMLElement *element in array) {        //打印结点的名字和字符串值        NSLog(@"name:%@\nstringValue:%@", element.name, element.stringValue);    }}