JSON&XML解析

JSON

使用JSONKit 需要添加-fno-objc-arc 是mrc的修改之后进行isa 替换就能编译通过

<code-pre class="code-pre" id="pre-bJACDi"><code-line class="line-numbers-rows"></code-line>- (void)viewDidLoad {
<code-line class="line-numbers-rows"></code-line>    [super viewDidLoad];
<code-line class="line-numbers-rows"></code-line>    NSString *path = [NSString stringWithFormat:@"/Users/wyc/Desktop/jsontext.date"];
<code-line class="line-numbers-rows"></code-line>    NSData *data = [NSData dataWithContentsOfFile:path];
<code-line class="line-numbers-rows"></code-line>    NSURL *url = [NSURL URLWithString:@"file:///Users/wyc/Desktop/jsontext.date"];
<code-line class="line-numbers-rows"></code-line>    NSURLRequest *request = [NSURLRequest requestWithURL:url];
<code-line class="line-numbers-rows"></code-line>    
<code-line class="line-numbers-rows"></code-line>    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) {
<code-line class="line-numbers-rows"></code-line>       id result =  [[JSONDecoder decoder]objectWithData:data];
<code-line class="line-numbers-rows"></code-line>        NSDictionary *dic = [result objectForKey:@"people"];
<code-line class="line-numbers-rows"></code-line>        for (id item in dic) {
<code-line class="line-numbers-rows"></code-line>            NSLog(@"%@",item[@"email"]);
<code-line class="line-numbers-rows"></code-line>            NSLog(@"%@",item[@"firstName"]);
<code-line class="line-numbers-rows"></code-line>            NSLog(@"%@",item[@"lastName"]);
<code-line class="line-numbers-rows"></code-line>        }
<code-line class="line-numbers-rows"></code-line>    }];
<code-line class="line-numbers-rows"></code-line>}
</code-pre>

XML

100

101

<code-pre class="code-pre" id="pre-xeCSFp"><code-line class="line-numbers-rows"></code-line>@interface Book : NSObject
<code-line class="line-numbers-rows"></code-line>@property (nonatomic, assign) NSInteger idd;
<code-line class="line-numbers-rows"></code-line>@property (nonatomic, copy) NSString *title;
<code-line class="line-numbers-rows"></code-line>@property (nonatomic, copy) NSString *author;
<code-line class="line-numbers-rows"></code-line>@property (nonatomic, copy) NSString *summary;
<code-line class="line-numbers-rows"></code-line>@end
<code-line class="line-numbers-rows"></code-line>
<code-line class="line-numbers-rows"></code-line>#import "Book.h"
<code-line class="line-numbers-rows"></code-line>@interface ViewController ()<NSXMLParserDelegate>
<code-line class="line-numbers-rows"></code-line>//目标数组
<code-line class="line-numbers-rows"></code-line>@property (nonatomic, strong) NSMutableArray *Books;
<code-line class="line-numbers-rows"></code-line>//当前正在解析的对象
<code-line class="line-numbers-rows"></code-line>@property (nonatomic, strong) Book *currentBook;
<code-line class="line-numbers-rows"></code-line>//拼接字符串
<code-line class="line-numbers-rows"></code-line>@property (nonatomic, strong) NSMutableString *elementString;
<code-line class="line-numbers-rows"></code-line>@end
<code-line class="line-numbers-rows"></code-line>
<code-line class="line-numbers-rows"></code-line>- (void)viewDidLoad {
<code-line class="line-numbers-rows"></code-line>    [super viewDidLoad];
<code-line class="line-numbers-rows"></code-line>    [self loadXML];
<code-line class="line-numbers-rows"></code-line>}
<code-line class="line-numbers-rows"></code-line>-(void)loadXML
<code-line class="line-numbers-rows"></code-line>{
<code-line class="line-numbers-rows"></code-line>    NSURL *url = [NSURL URLWithString:@"file:///Users/wyc/Desktop/aaa.xml"];
<code-line class="line-numbers-rows"></code-line>    NSURLRequest *request = [NSURLRequest requestWithURL:url];
<code-line class="line-numbers-rows"></code-line>    
<code-line class="line-numbers-rows"></code-line>    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse * _Nullable response, NSData * _Nullable data, NSError * _Nullable connectionError) {
<code-line class="line-numbers-rows"></code-line>        //实例化xml解析器
<code-line class="line-numbers-rows"></code-line>        NSXMLParser *parser = [[NSXMLParser alloc]initWithData:data];
<code-line class="line-numbers-rows"></code-line>        //设置代理
<code-line class="line-numbers-rows"></code-line>        parser.delegate = self;
<code-line class="line-numbers-rows"></code-line>        //开始解析  一旦开始解析 后续工作都是由代理方法实现
<code-line class="line-numbers-rows"></code-line>        [parser parse];
<code-line class="line-numbers-rows"></code-line>    }];
<code-line class="line-numbers-rows"></code-line>}
<code-line class="line-numbers-rows"></code-line>//mark:delegatexml
<code-line class="line-numbers-rows"></code-line>//打开文档
<code-line class="line-numbers-rows"></code-line>-(void)parserDidStartDocument:(NSXMLParser *)parser
<code-line class="line-numbers-rows"></code-line>{
<code-line class="line-numbers-rows"></code-line>    //清除数组
<code-line class="line-numbers-rows"></code-line>    [self.roots removeAllObjects];
<code-line class="line-numbers-rows"></code-line>}
<code-line class="line-numbers-rows"></code-line>//开始节点 只能读取出节点属性名称跟值
<code-line class="line-numbers-rows"></code-line>-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary<NSString *,NSString *> *)attributeDict
<code-line class="line-numbers-rows"></code-line>{
<code-line class="line-numbers-rows"></code-line>//    NSLog(@"elementName:%@",elementName);
<code-line class="line-numbers-rows"></code-line>//    NSLog(@"namespaceURI:%@",namespaceURI);
<code-line class="line-numbers-rows"></code-line>//    NSLog(@"qName:%@",qName);
<code-line class="line-numbers-rows"></code-line>//    NSLog(@"attributeDict:%@",attributeDict);
<code-line class="line-numbers-rows"></code-line>    if ([elementName isEqualToString:@"Book"]) {
<code-line class="line-numbers-rows"></code-line>        self.currentBook = [[Book alloc]init];
<code-line class="line-numbers-rows"></code-line>        self.currentBook.idd = @([attributeDict[@"idd"] intValue]);
<code-line class="line-numbers-rows"></code-line>//        NSLog(@"attributeDict:%@",attributeDict[@"idd"]);
<code-line class="line-numbers-rows"></code-line>    }
<code-line class="line-numbers-rows"></code-line>    [self.elementString setString:@""];
<code-line class="line-numbers-rows"></code-line>}
<code-line class="line-numbers-rows"></code-line>//发现节点内容
<code-line class="line-numbers-rows"></code-line>-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
<code-line class="line-numbers-rows"></code-line>{
<code-line class="line-numbers-rows"></code-line>    [self.elementString appendString:string];
<code-line class="line-numbers-rows"></code-line>//    NSLog(@"内容为:%@",string);
<code-line class="line-numbers-rows"></code-line>}
<code-line class="line-numbers-rows"></code-line>//结束节点
<code-line class="line-numbers-rows"></code-line>-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
<code-line class="line-numbers-rows"></code-line>{
<code-line class="line-numbers-rows"></code-line>//    NSLog(@"%@",elementName);
<code-line class="line-numbers-rows"></code-line>    if ([elementName isEqualToString:@"Book"]) {
<code-line class="line-numbers-rows"></code-line>        [self.Books addObject:self.currentBook];
<code-line class="line-numbers-rows"></code-line>    }else if (![elementName isEqualToString:@"Books"]){
<code-line class="line-numbers-rows"></code-line>        [self.currentBook setValue:self.elementString forKey:elementName];
<code-line class="line-numbers-rows"></code-line>    }
<code-line class="line-numbers-rows"></code-line>//    }else if ([elementName isEqualToString:@"title"]){
<code-line class="line-numbers-rows"></code-line>//        self.currentBook.title = self.elementString;
<code-line class="line-numbers-rows"></code-line>//    }else if ([elementName isEqualToString:@"author"]){
<code-line class="line-numbers-rows"></code-line>//        self.currentBook.author = self.elementString;
<code-line class="line-numbers-rows"></code-line>//    }else if ([elementName isEqualToString:@"summary"]){
<code-line class="line-numbers-rows"></code-line>//        self.currentBook.summary = self.elementString;
<code-line class="line-numbers-rows"></code-line>//    }
<code-line class="line-numbers-rows"></code-line>}
<code-line class="line-numbers-rows"></code-line>//结束文档
<code-line class="line-numbers-rows"></code-line>-(void)parserDidEndDocument:(NSXMLParser *)parser
<code-line class="line-numbers-rows"></code-line>{
<code-line class="line-numbers-rows"></code-line>    NSLog(@"文档解析结束:%@",self.Books);
<code-line class="line-numbers-rows"></code-line>    
<code-line class="line-numbers-rows"></code-line>}
<code-line class="line-numbers-rows"></code-line>//lazy
<code-line class="line-numbers-rows"></code-line>-(NSMutableArray *)roots
<code-line class="line-numbers-rows"></code-line>{
<code-line class="line-numbers-rows"></code-line>    if (_Books == nil) {
<code-line class="line-numbers-rows"></code-line>        _Books = [[NSMutableArray alloc]init];
<code-line class="line-numbers-rows"></code-line>    }
<code-line class="line-numbers-rows"></code-line>    return _Books;
<code-line class="line-numbers-rows"></code-line>}
<code-line class="line-numbers-rows"></code-line>-(NSMutableString *)elementString
<code-line class="line-numbers-rows"></code-line>{
<code-line class="line-numbers-rows"></code-line>    if (_elementString == nil) {
<code-line class="line-numbers-rows"></code-line>        _elementString = [[NSMutableString alloc]init];
<code-line class="line-numbers-rows"></code-line>    }
<code-line class="line-numbers-rows"></code-line>    return _elementString;
<code-line class="line-numbers-rows"></code-line>}
</code-pre>

__EOF__

本文作者：若云
本文链接：https://www.cnblogs.com/fucker/articles/5037647.html
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