ViewController.m#

//
//  ViewController.m
//  解析
//
//

#import "ViewController.h"
#import "GDataXMLNode.h"
#import "Student.h"
#import "JSONKit.h"

@interface ViewController ()<NSXMLParserDelegate>


@property(nonatomic, strong)NSMutableArray *dataArray;

//当前节点
@property(nonatomic, strong)NSString *currentElement;


@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

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


#pragma mark ---NSXMLParser---
- (IBAction)xmlParser:(UIButton *)sender {
    
    NSLog(@"xml解析");
    
    //1.获取路径
    NSString *path = [[NSBundle mainBundle]pathForResource:@"Stu_xml" ofType:@"txt"];
    
    //2.转换成data对象
    NSData *data = [NSData dataWithContentsOfFile:path];
    
    //3.创建解析对象(NSXMLParser是系统自带的xml解析类,基于事件驱动,采用协议回调机制)
    NSXMLParser *parser = [[NSXMLParser alloc] initWithData:data];
    
    //4.设置代理
    parser.delegate = self;
    
    //5.开始解析
    [parser parse];

    
}

//DOM解析,先读取完整地xml文档,然后在内存中形成树的结构,再根据节点关系,去获取数据,这里我们使用Google提供的第三方类GDataXMLNode来解析,解析的速度比NSXMLParser快.
- (IBAction)domParser:(UIButton *)sender {
    
    
    NSLog(@"dom解析");
    //1.先获取路径
    NSString *path = [[NSBundle mainBundle]pathForResource:@"Stu_xml" ofType:@"txt"];
    //2.转化成data对象
    NSData *data =[NSData dataWithContentsOfFile:path];
    //3.创建文档对象,此时文档里存放的是树状结构的数据
     //创建error对象
    NSError *error ;
    GDataXMLDocument  *document = [[GDataXMLDocument alloc] initWithData:data options:0 error:&error];
    //4.获取文档节点
    GDataXMLElement *rootElement = document.rootElement;
    
    
    //5.
     //初始化数组
    self.dataArray = [NSMutableArray arrayWithCapacity:5];
     //遍历根节点的子节点(student)
    for (GDataXMLElement *subElement in rootElement.children) {
        //创建model
        Student *student = [Student new];
        NSLog(@"-=-=-=-=-=%@",subElement);
        //取student基本信息name,gender,age,hobby,phoneNumber
        for (GDataXMLElement *contentElement in subElement.children) {
            NSLog(@"==========%@",contentElement);
            //.name是节点的名字,.stringValue是节点存储的值
            /*
            if ([contentElement.name isEqualToString:@"name"]) {
                student.name = contentElement.stringValue;
            } else if ([contentElement.name isEqualToString:@"age"]){
                student.age = [contentElement.stringValue intValue];
            } else if ([contentElement.name isEqualToString:@"gender"]){
                student.gender = contentElement.stringValue;
            } else if ([contentElement.name isEqualToString:@"hobby"]){
                student.hobby = contentElement.stringValue;
            } else if ([contentElement.name isEqualToString:@"phoneNumber"]){
                student.phoneNumber = contentElement.stringValue;
            }
            
       */
        //或使用KVC
        [student setValue:contentElement.stringValue forKey:contentElement.name];
        
            
      }
         //将student对象添加到数组中
        [_dataArray addObject:student];
        
    }
    
    for (Student *stu in _dataArray) {
        NSLog(@"%@",stu);
    }
    
    
    
}
#pragma mark---NSJSONSerialization解析------
- (IBAction)functionParser:(id)sender {

    
    NSLog(@"json解析---------------------------------------系统");
    //1.获取路径
    NSString *path = [[NSBundle mainBundle]pathForResource:@"Stu_json" ofType:@"txt"];
    //2.创建data
    NSData *data = [NSData dataWithContentsOfFile:path];
    //3.解析jeson数据
    NSError *error;
    NSArray *array = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
    
    NSLog(@"%@",array);
    //创建并初始化数组dataarray
    self.dataArray = [[NSMutableArray alloc] initWithCapacity:5];
    //遍历数组
    for (NSDictionary *dic in array) {
        //创建model
        Student *stu = [Student new];
        [stu setValuesForKeysWithDictionary:dic];
        [_dataArray addObject:stu];
        
    }
    //检验
    for (Student *stu in _dataArray) {
        NSLog(@"%@",stu);
    }
    
    
    
    
    
}
#pragma mark---JSONKit解析----
- (IBAction)jsonKitParser:(UIButton *)sender {
    NSLog(@"jsonKit解析");
    
    //1.获取路径
    NSString *path = [[NSBundle mainBundle]pathForResource:@"Stu_json" ofType:@"txt"];
    //2.创建data
    NSData *data = [NSData dataWithContentsOfFile:path];
    
    //3.解析jeson数据
    
    NSArray *array = [data objectFromJSONData];
    NSLog(@"%@",array);//数组内最后一个字典大括号后不能有","
    //创建并初始化数组dataarray
    self.dataArray = [[NSMutableArray alloc] initWithCapacity:5];
    //遍历数组
    for (NSDictionary *dic in array) {
        //创建model
        Student *stu = [Student new];
        [stu setValuesForKeysWithDictionary:dic];
        [_dataArray addObject:stu];
        
    }
    //检验
    for (Student *stu in _dataArray) {
        NSLog(@"%@",stu);
    }

}







#pragma mark ---NSXMLParserDelegate---


//1.开始解析文档
- (void)parserDidStartDocument:(NSXMLParser *)parser{
    NSLog(@"%s---%d----开始解析文档%d",__FUNCTION__,__LINE__,1);
    self.dataArray = [[NSMutableArray alloc] initWithCapacity:5];
}


//2.开始解析标签
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(nullable NSString *)namespaceURI qualifiedName:(nullable NSString *)qName attributes:(NSDictionary<NSString *, NSString *> *)attributeDict{
    NSLog(@"%s---%d----开始解析标签%d",__FUNCTION__,__LINE__,2);
    //获取当前节点
    _currentElement = elementName;
    //这一步作用是根据xml解析出来的节点信息来创建对应的model,(没有赋值过程,只有model的预建立)
    if ([elementName isEqualToString:@"student"]) {
        Student *student = [Student new];
        [_dataArray addObject:student];
    }
}

//3.读取标签里的值
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
    NSLog(@"%s---%d----读取标签里的值%d",__FUNCTION__,__LINE__,3);
    //方法循环执行,我们需要取数组的最后一个元素
    Student *student = _dataArray.lastObject;
    //KVC  model赋值
    [student setValue:string forKey:_currentElement];
    NSLog(@"%@",string);
    
}

//4.结束标签解析
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(nullable NSString *)namespaceURI qualifiedName:(nullable NSString *)qName{
    NSLog(@"%s---%d----结束标签解析%d",__FUNCTION__,__LINE__,4);
    //当前节点置为空
    _currentElement = nil;
}

//5.结束解析文档
- (void)parserDidEndDocument:(NSXMLParser *)parser{
     NSLog(@"%s---%d----结束解析文档%d",__FUNCTION__,__LINE__,5);
    //打印结果,验证解析
    for (Student *stu in _dataArray) {
        NSLog(@"%@",stu);
    }
}
//6.若解析出现错误,打印错误原因
- (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError{
    NSLog(@"%s---%d----%d",__FUNCTION__,__LINE__,6);
    NSLog(@"paeserError = %@",parseError);//若出错会打印要解析的文件中,错误的位置
}
@end

Student.h#

//
//  Student.h
// 解析
//

//

#import <Foundation/Foundation.h>

@interface Student : NSObject

//姓名
@property(nonatomic, strong)NSString *name;
//性别
@property(nonatomic, strong)NSString *gender;
//爱好
@property(nonatomic, strong)NSString *hobby;
//电话号码
@property(nonatomic, strong)NSString *phoneNumber;
//年龄
@property(nonatomic, assign)int age;


@end

Student.m#

//
//  Student.m
//  解析
//

//

#import "Student.h"

@implementation Student


-(void)setValue:(id)value forUndefinedKey:(NSString *)key{
    
}


- (NSString *)description
{
    return [NSString stringWithFormat:@"%@ %d %@", _name,_age,_gender];
}

@end