UI基础整理-16

API（Application Programming Interface,应用程序编程接口）

XML:   SAX     

          Dom

JSON:  JSONSerialization

             JSONKit

在引入第三方时要注意如何使用(使用方法一般都写在下载的网页中或者下载完成后的.h/.m文件中)

容器 —>三大集合(数组,字典,集合)

引入第三方报错(第三方写在mrc的)   将其修改为arc

在Header Search中添加下方文本

修改为arc机制

//
//  ViewController.m
//  Lesson16_解析
//
//  Created by Floating_SH on 15/12/8.
//  Copyright © 2015年SH. All rights reserved.
//

#import"ViewController.h"
#import "Student.h"
#import "GDataXMLNode.h"
#import "JSONKit.h"
@interface ViewController ()<NSXMLParserDelegate>





/**
 *  一个可变数组,用来存储每次解析出来的model数据
 */
@property (nonatomic,strong)NSMutableArray *dataArray;
/**
 *  不可变字符串,用来保存当前解析到的节点名称
 */
@property (nonatomic,strong)NSString *currentElement;


@end


@implementationViewController

#pragma mark --- JSON JSONKit解析---
//JSON JSONKit解析
- (IBAction)jsonkitParserAction:(id)sender {
   
    //1.获取文件路径
    NSString*path = [[NSBundlemainBundle]pathForResource:@"JSONDocument"ofType:@"txt"];
    //2.创建Data对象
    NSData *data = [NSData dataWithContentsOfFile:path];
    //3.解析
    NSArray *array = [data objectFromJSONData];

//    NSLog(@"JSON JSONKit解析结果:%@",array);
   
    //封装model
    self.dataArray= [[NSMutableArrayalloc]initWithCapacity:6];
    for (NSDictionary *dict in array) {
        Student *student = [Studentnew];
        [student setValuesForKeysWithDictionary:dict];
        [self.dataArrayaddObject:student];
    }
   
    //验证model
    for (Student *student in self.dataArray) {
        NSLog(@"JSON JSONKit解析结果:%@",student);
    }
}

#pragma mark --- JSON Foundation解析---
//JSON Foundation解析(最好使用系统自带的解析方法)
- (IBAction)jsonFoundationParserAction:(id)sender {
   
    //1.获取文件路径
    NSString*path = [[NSBundlemainBundle]pathForResource:@"JSONDocument"ofType:@"txt"];
    //2.创建Data对象(Data是二进制文件,计算机能读懂)
    NSData *data = [NSData dataWithContentsOfFile:path];
    //3.解析(NSJSONSerialization : 专门做JSON解析的,options   NSJSONReadingAllowFragments(允许碎片):能最大限度的包容碎片)
    NSArray *array = [NSJSONSerializationJSONObjectWithData:dataoptions:NSJSONReadingAllowFragmentserror:nil];

//    NSLog(@"JSON Foundation解析结果:%@",array);

    //封装model
    self.dataArray= [[NSMutableArrayalloc]initWithCapacity:6];
    for (NSDictionary *dict in array) {
        Student *student = [Studentnew];
        [student setValuesForKeysWithDictionary:dict];
        [self.dataArrayaddObject:student];
    }
    //验证model
    for (Student *student in self.dataArray) {
        NSLog(@"JSON Foundation解析结果:%@",student);
    }
   
}

#pragma mark --- XML - DOM解析---
//xmlDOM解析
- (IBAction)xmlDomParserAction:(id)sender {
   
    //1.获取文件路径
    NSString *path = [[NSBundle mainBundle] pathForResource:@"XMLDocument"ofType:@"txt"];
    //2.创建Data对象
    NSData *data = [NSData dataWithContentsOfFile:path];
    //3.创建解析对象
    GDataXMLDocument*document = [[GDataXMLDocumentalloc]initWithData:dataoptions:0error:nil];
    //4.获取根节点
    GDataXMLElement*rootElement = [document rootElement];
   
    //解析
    self.dataArray= [[NSMutableArrayalloc]initWithCapacity:6];
    //rootElement.children  根节点的子节点
    //遍历根节点的子节点
    for (GDataXMLElement *studentElement in rootElement.children) {
        //根据子节点的个数来创建model
        Student*student = [Studentnew];
        //遍历子节点的子节点
        for (GDataXMLElement *subElement in studentElement.children) {
            //KVC赋值
            [student setValue:subElement.stringValueforKey:subElement.name];
        }
        //将model对象添加到数组
        [self.dataArrayaddObject:student];
    }
   
    //遍历打印
    for (Student *s in self.dataArray) {
        NSLog(@"XML_DOM解析结果:%@",s);
    }
   
}





#pragma mark --- XML - SAX解析---
//xmlSax解析
- (IBAction)xmlSaxParserAction:(id)sender {
    //采用协议回调机制(设置代理对象)
   
    //1.获取文件路径
    NSString*path = [[NSBundlemainBundle]pathForResource:@"XMLDocument"ofType:@"txt"];
    //2.创建data对象
    NSData *data = [[NSData alloc]initWithContentsOfFile:path];
    //3.创建解析对象
    NSXMLParser*parser = [[NSXMLParseralloc]initWithData:data];
    //4.设置代理
    parser.delegate= self;
    //5.开始解析
    [parser parse];
   
   
}
#pragma mark -----协议回调机制解析数据步骤----
//1.开始解析文档
- (void)parserDidStartDocument:(NSXMLParser*)parser{
   
    //给数组开辟空间
    self.dataArray= [[NSMutableArrayalloc]initWithCapacity:6];
   
   
}

//2.开始解析标签
- (void)parser:(NSXMLParser*)parser didStartElement:(NSString*)elementName namespaceURI:(NSString*)namespaceURI qualifiedName:(NSString*)qName attributes:(NSDictionary<NSString*,NSString*> *)attributeDict{
   
    //获取当前标签名
    self.currentElement= elementName;
    //根据student标签来预存储model对象
    if ([elementName isEqualToString:@"student"]) {
        Student *student = [Studentnew];
        [self.dataArrayaddObject:student];
    }
   
}

//3.获取标签内容(真正赋值)
- (void)parser:(NSXMLParser*)parser foundCharacters:(NSString*)string{
   
    //取出数组中最后一个元素进行赋值操作
    Student *student = [self.dataArraylastObject];
    [student setValue:stringforKey:self.currentElement];//currentElement   标签名
}


//4.结束标签解析
- (void)parser:(NSXMLParser*)parser didEndElement:(NSString*)elementName namespaceURI:(NSString*)namespaceURI qualifiedName:(NSString*)qName{
   
    //清0
    self.currentElement= nil;
}


//下面两种可以不写(为了严谨还是写上)
//5.结束文档解析
- (void)parserDidEndDocument:(NSXMLParser*)parser{
   
    //遍历,查询解析结果
    for (Student *student in self.dataArray) {
        NSLog(@"XML_SAX解析结果:%@",student);
    }
}

//6.错误处理(写错时才会执行)
- (void)parser:(NSXMLParser*)parser parseErrorOccurred:(NSError*)parseError{
   
    NSLog(@"出错了,错误代码是%@",parseError);

}