XML DOM JSON 解析

#import "MyViewController.h"

@interface MyViewController ()

@end

@implementation MyViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view.

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

/*

#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

    // Get the new view controller using [segue destinationViewController].

    // Pass the selected object to the new view controller.

}

*/

#pragma mark --SAX解析

// SAX特点: 逐行按每个标签进行解析

// 优点: 适合处理大型数据, 不占内存

// 缺点: 不能对某个标签进行修改, 不能定位到某个指定的标签

- (IBAction)myButton:(UIButton *)sender

{

    // 1.获取文件

    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"Students" ofType:@"txt"];

    

    // 2.将文件转换成NSData类型

    NSData *data = [NSData dataWithContentsOfFile:filePath];

    

    // 3.用系统自带工具NSXMLParser解析数据

    NSXMLParser *parser = [[NSXMLParser alloc] initWithData:data];

    

    // 4.设置代理 签订协议并用代理方法解析

    parser.delegate = self;

    

    // 5.开始解析xml

    [parser parse];

    [parser release];

}

#pragma mark -- 解析电影list

- (IBAction)movieButton:(UIButton *)sender

{

    NSString *file = [[NSBundle mainBundle] pathForResource:@"movielist副本" ofType:@"txt"];

    NSData *data = [NSData dataWithContentsOfFile:file];

    NSMutableDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];

    NSLog(@"dic = %@", dic);

    

    // 取出字典中key为error_code的值

    NSString *error_codeStr = [NSString stringWithFormat:@"%@", [dic objectForKey:@"error_code"]];

    NSLog(@"error_codeStr = %@", error_codeStr);

    

    NSString *reasonStr = [NSString stringWithFormat:@"%@", [dic objectForKey:@"reason"]];

    NSLog(@"reasonStr = %@", reasonStr); 

    

    if ([error_codeStr isEqualToString:@"0"]) {

        NSLog(@"网络请求数据成功");

        

        NSMutableArray *array = [dic objectForKey:@"result"];

        NSLog(@"result = %@", array);

    } else if ([error_codeStr isEqualToString:@"0001"]) {

        NSLog(@"提示用户网络请求失败,请重新加载");

        // 弹出提示框 当用户点确定时 帮助用户重新加载

    }

    

    

    

}

#pragma mark --1.开始解析

- (void)parserDidStartDocument:(NSXMLParser *)parser

{

    NSLog(@"开始解析");

    // 1.初始化数组

    self.allStudentArray = [NSMutableArray array];

    

}

#pragma mark --2.开始解析标签

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict

{

    NSLog(@"开始标签 = %@", elementName);

    

    // 根据开始标签stu判断是否是学生 如果是,创建一个学生对象

    if ([elementName isEqualToString:@"stu"]) {

        Students *stu = [[Students alloc] init];

        // 将学生对象放入数组中

        

        [self.allStudentArray addObject:stu];

        [stu release];

    }

    self.currentElement = elementName;

}

#pragma mark --3.解析标签值

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string

{

   

    // 取出学生对象,并赋值

    Students *stu = [self.allStudentArray lastObject];

    /*

    // 判断如果当前的开始标签是<name>那么我就将值存入

    if ([self.currentElement isEqualToString:@"name"]) {

        stu.name = string;

    }

    if ([self.currentElement isEqualToString:@"number"]) {

        stu.number = string;

    }

    if ([self.currentElement isEqualToString:@"time"]) {

        stu.time = string;

    }

    if ([self.currentElement isEqualToString:@"address"]) {

        stu.address = string;

    }

     */

    

    

    // 键值编码 根据key值 自动匹配属性值

    // 如果你的key值跟属性名一样,kvc会自动给属性value赋值

    [stu setValue:string forKey:self.currentElement];

}

#pragma mark --4.解析标签结束

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName

{

    self.currentElement = nil;

    NSLog(@"结束标签 = %@", elementName);

}

#pragma mark --5.解析结束

- (void)parserDidEndDocument:(NSXMLParser *)parser

{

    for (Students *stu in self.allStudentArray) {

        NSLog(@"name = %@ number = %@ time = %@ address = %@", stu.name, stu.number, stu.time, stu.address);

    }

    NSLog(@"结束标签");

}

#pragma mark Dom解析

- (IBAction)button1:(UIButton *)sender

{

    NSLog(@"Dom解析");

    

    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"Students" ofType:@"txt"];

 

    NSData *data = [NSData dataWithContentsOfFile:filePath];

    

    // 1.创建Dom解析工具对象

    GDataXMLDocument *xmlDocument = [[GDataXMLDocument alloc] initWithData:data options:0 error:nil];

    

    // 2.获取根节点

    GDataXMLElement *rootElement = xmlDocument.rootElement;

    NSLog(@"root = %@", rootElement);

    

    // 6.创建存放model学生的数组

    self.allStudentArray = [NSMutableArray array];

    

    // 3.遍历根节点上的子节点

    for (GDataXMLElement *subElement in rootElement.children) {

        

        // 5.循环创建存放学生属性值的对象

        Students *stu = [[Students alloc] init];

        NSLog(@"子节点 = %@", subElement);

        

        // 4.遍历子节点上的子节点

        for (GDataXMLElement *ssubElement in subElement.children) {

            

            // 7.kvc进行赋值

            [stu setValue:ssubElement.stringValue forKey:ssubElement.name];

        }

        [self.allStudentArray addObject:stu];

        [stu release];

    }

//    GDataXMLElement *twoElement = [rootElement.children objectAtIndex:1];

//    NSLog(@"获取第二个子节点 = %@", twoElement);

    

    for (Students *stu in self.allStudentArray) {

        NSLog(@"name = %@ number = %@ time = %@ address = %@", stu.name, stu.number, stu.time, stu.address);

    }

}

#pragma mark json解析

- (IBAction)button2:(UIButton *)sender

{

    NSLog(@"json");

    // 1.找到文件路径

    NSString *file = [[NSBundle mainBundle] pathForResource:@"Teachers副本" ofType:@"txt"];

    

    NSData *data = [NSData dataWithContentsOfFile:file];

    

    // 2.通过系统自带的json解析工具解析数据

    NSMutableArray *array = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];

    

    NSLog(@"array = %@", array);

    self.allStudentArray = [NSMutableArray array];

    for (NSDictionary *dic in array) {

        Students *stu = [[Students alloc] init];

        [stu setValuesForKeysWithDictionary:dic];

        [self.allStudentArray addObject:stu];

        [stu release];

    

    }

    for (Students *stu in self.allStudentArray) {

        NSLog(@"name = %@ number = %@ gender = %@ phone = %@", stu.name, stu.number, stu.gender, stu.phone);

    }

    

    // 用jsonkit工具解析json数据

    NSMutableArray *array2 = [data objectFromJSONData];

    NSLog(@"array2 = %@", array2);

}

@end