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;

//當(dāng)前節(jié)點
@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.獲取路徑
    NSString *path = [[NSBundle mainBundle]pathForResource:@"Stu_xml" ofType:@"txt"];
    
    //2.轉(zhuǎn)換成data對象
    NSData *data = [NSData dataWithContentsOfFile:path];
    
    //3.創(chuàng)建解析對象(NSXMLParser是系統(tǒng)自帶的xml解析類,基于事件驅(qū)動,采用協(xié)議回調(diào)機(jī)制)
    NSXMLParser *parser = [[NSXMLParser alloc] initWithData:data];
    
    //4.設(shè)置代理
    parser.delegate = self;
    
    //5.開始解析
    [parser parse];

    
}

//DOM解析,先讀取完整地xml文檔,然后在內(nèi)存中形成樹的結(jié)構(gòu),再根據(jù)節(jié)點關(guān)系,去獲取數(shù)據(jù),這里我們使用Google提供的第三方類GDataXMLNode來解析,解析的速度比NSXMLParser快.
- (IBAction)domParser:(UIButton *)sender {
    
    
    NSLog(@"dom解析");
    //1.先獲取路徑
    NSString *path = [[NSBundle mainBundle]pathForResource:@"Stu_xml" ofType:@"txt"];
    //2.轉(zhuǎn)化成data對象
    NSData *data =[NSData dataWithContentsOfFile:path];
    //3.創(chuàng)建文檔對象,此時文檔里存放的是樹狀結(jié)構(gòu)的數(shù)據(jù)
     //創(chuàng)建error對象
    NSError *error ;
    GDataXMLDocument  *document = [[GDataXMLDocument alloc] initWithData:data options:0 error:&error];
    //4.獲取文檔節(jié)點
    GDataXMLElement *rootElement = document.rootElement;
    
    
    //5.
     //初始化數(shù)組
    self.dataArray = [NSMutableArray arrayWithCapacity:5];
     //遍歷根節(jié)點的子節(jié)點(student)
    for (GDataXMLElement *subElement in rootElement.children) {
        //創(chuàng)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是節(jié)點的名字,.stringValue是節(jié)點存儲的值
            /*
            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];
        
            
      }
         //將student對象添加到數(shù)組中
        [_dataArray addObject:student];
        
    }
    
    for (Student *stu in _dataArray) {
        NSLog(@"%@",stu);
    }
    
    
    
}
#pragma mark---NSJSONSerialization解析------
- (IBAction)functionParser:(id)sender {

    
    NSLog(@"json解析---------------------------------------系統(tǒng)");
    //1.獲取路徑
    NSString *path = [[NSBundle mainBundle]pathForResource:@"Stu_json" ofType:@"txt"];
    //2.創(chuàng)建data
    NSData *data = [NSData dataWithContentsOfFile:path];
    //3.解析jeson數(shù)據(jù)
    NSError *error;
    NSArray *array = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
    
    NSLog(@"%@",array);
    //創(chuàng)建并初始化數(shù)組dataarray
    self.dataArray = [[NSMutableArray alloc] initWithCapacity:5];
    //遍歷數(shù)組
    for (NSDictionary *dic in array) {
        //創(chuàng)建model
        Student *stu = [Student new];
        [stu setValuesForKeysWithDictionary:dic];
        [_dataArray addObject:stu];
        
    }
    //檢驗
    for (Student *stu in _dataArray) {
        NSLog(@"%@",stu);
    }
    
    
    
    
    
}
#pragma mark---JSONKit解析----
- (IBAction)jsonKitParser:(UIButton *)sender {
    NSLog(@"jsonKit解析");
    
    //1.獲取路徑
    NSString *path = [[NSBundle mainBundle]pathForResource:@"Stu_json" ofType:@"txt"];
    //2.創(chuàng)建data
    NSData *data = [NSData dataWithContentsOfFile:path];
    
    //3.解析jeson數(shù)據(jù)
    
    NSArray *array = [data objectFromJSONData];
    NSLog(@"%@",array);//數(shù)組內(nèi)最后一個字典大括號后不能有","
    //創(chuàng)建并初始化數(shù)組dataarray
    self.dataArray = [[NSMutableArray alloc] initWithCapacity:5];
    //遍歷數(shù)組
    for (NSDictionary *dic in array) {
        //創(chuàng)建model
        Student *stu = [Student new];
        [stu setValuesForKeysWithDictionary:dic];
        [_dataArray addObject:stu];
        
    }
    //檢驗
    for (Student *stu in _dataArray) {
        NSLog(@"%@",stu);
    }

}







#pragma mark ---NSXMLParserDelegate---


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


//2.開始解析標(biāo)簽
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(nullable NSString *)namespaceURI qualifiedName:(nullable NSString *)qName attributes:(NSDictionary<NSString *, NSString *> *)attributeDict{
    NSLog(@"%s---%d----開始解析標(biāo)簽%d",__FUNCTION__,__LINE__,2);
    //獲取當(dāng)前節(jié)點
    _currentElement = elementName;
    //這一步作用是根據(jù)xml解析出來的節(jié)點信息來創(chuàng)建對應(yīng)的model,(沒有賦值過程,只有model的預(yù)建立)
    if ([elementName isEqualToString:@"student"]) {
        Student *student = [Student new];
        [_dataArray addObject:student];
    }
}

//3.讀取標(biāo)簽里的值
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
    NSLog(@"%s---%d----讀取標(biāo)簽里的值%d",__FUNCTION__,__LINE__,3);
    //方法循環(huán)執(zhí)行,我們需要取數(shù)組的最后一個元素
    Student *student = _dataArray.lastObject;
    //KVC  model賦值
    [student setValue:string forKey:_currentElement];
    NSLog(@"%@",string);
    
}

//4.結(jié)束標(biāo)簽解析
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(nullable NSString *)namespaceURI qualifiedName:(nullable NSString *)qName{
    NSLog(@"%s---%d----結(jié)束標(biāo)簽解析%d",__FUNCTION__,__LINE__,4);
    //當(dāng)前節(jié)點置為空
    _currentElement = nil;
}

//5.結(jié)束解析文檔
- (void)parserDidEndDocument:(NSXMLParser *)parser{
     NSLog(@"%s---%d----結(jié)束解析文檔%d",__FUNCTION__,__LINE__,5);
    //打印結(jié)果,驗證解析
    for (Student *stu in _dataArray) {
        NSLog(@"%@",stu);
    }
}
//6.若解析出現(xiàn)錯誤,打印錯誤原因
- (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError{
    NSLog(@"%s---%d----%d",__FUNCTION__,__LINE__,6);
    NSLog(@"paeserError = %@",parseError);//若出錯會打印要解析的文件中,錯誤的位置
}
@end

Student.h#

//
//  Student.h
// 解析
//

//

#import <Foundation/Foundation.h>

@interface Student : NSObject

//姓名
@property(nonatomic, strong)NSString *name;
//性別
@property(nonatomic, strong)NSString *gender;
//愛好
@property(nonatomic, strong)NSString *hobby;
//電話號碼
@property(nonatomic, strong)NSString *phoneNumber;
//年齡
@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