XML 文件解析
1.XML文件
<Data>
<Movie id="1">
<title>good lucky to you</title>
<box>111</box>
<summary>This is a story</summary>
</Movie>
<Movie id="2">
<title>hello</title>
<box>99</box>
<summary>oh,yes</summary>
</Movie>
<Movie id="3">
<title>Cold</title>
<box>100</box>
<summary>I love cold weather</summary>
</Movie>
</Data>
2,解析
#import "ViewController.h"
//创建模型类
@interface DataModel : NSObject
//Data
@property(nonatomic,copy)NSNumber *id;
@property (nonatomic,copy)NSString*title;
@property (nonatomic,copy)NSString*box;
@property (nonatomic,copy)NSString*summary;
-(instancetype)initWithDict:(NSDictionary*)dict;
+(instancetype)dataWithdict:(NSDictionary*)dict;
@end
@implementation DataModel
-(instancetype)initWithDict:(NSDictionary*)dict
{
if (self=[super init]) {
[self setValuesForKeysWithDictionary:dict];
}
return self;
}
+(instancetype)dataWithdict:(NSDictionary*)dict
{
return [[self alloc]initWithDict:dict];
}
@end
@interface ViewController ()<NSXMLParserDelegate>
@property(nonatomic,strong)NSMutableArray*models;
//主要用于XML标签体中的文本的读取,很多时候标签体内的内容不是一次读取出来的,需要拼接字符串
@property(nonatomic,copy)NSMutableString*str;
@property(nonatomic,strong)DataModel*datamodel;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
[self loadDataWithUrl:@"http://127.0.0.1/struts.xml"];
}
//XML解析方法
-(void)loadDataWithUrl:(NSString*)str
{
NSURL *url=[NSURL URLWithString:str];
NSURLRequest *quest=[NSURLRequest requestWithURL:url cachePolicy:1 timeoutInterval:15];
[NSURLConnection sendAsynchronousRequest:quest queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
if (!connectionError)
{
NSHTTPURLResponse *resnse=(NSHTTPURLResponse*)response;
if (resnse.statusCode==200) {
NSXMLParser *parser=[[NSXMLParser alloc]initWithData:data];
parser.delegate=self;
//开始解析
[parser parse];
}
}
else
{
NSLog(@"请求出错:%@",connectionError);
}
}];
}
#pragma mark NSXMLParserDelegate XML文档解析五部曲
//开始解析
-(void)parserDidStartDocument:(NSXMLParser *)parser
{
NSLog(@"开始解析!!清除之前的数据");
[self.models removeAllObjects];
}
//开始查找标签元素
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
//elementName 记录标签的名称 attributeDict:记录标签的属
NSLog(@"开始查找标签元素:%@",elementName);
//NSLog(@"elementName:%@,namespaceURI:%@,qName:%@",elementName,namespaceURI,qName);
//排除根节点
self.str=nil;
if ([elementName isEqualToString:@"Movie"]) {
//self.str=nil;
self.datamodel=[DataModel new];
[self.models addObject:self.datamodel];
[attributeDict enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
[self.datamodel setValue:obj forKey:key];
}];
}
}
//查找标签间的内容 可能不止执行一次
-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
//NSLog(@"标签之间的内容!!!");
[self.str appendString:string];
}
//标签查找结束
-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
//NSLog(@"标签结束:%@ ,%@",elementName,self.str);
if (![elementName isEqualToString:@"Data"]&&![elementName isEqualToString:@"Movie"]) {
[self.datamodel setValue:self.str forKey:elementName];
}
}
//解析结束
-(void)parserDidEndDocument:(NSXMLParser *)parser
{
NSLog(@"解析结束!!");
NSLog(@"%@",self.models);
}
//解析出错
-(void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError
{
NSLog(@"解析出错!!!!!!!!%@",parseError);
}
//懒加载
-(NSMutableString*)str
{
if (!_str) {
_str=[NSMutableString new];
}
return _str;
}
-(NSMutableArray*)models
{
if (!_models) {
_models=[NSMutableArray new];
}
return _models;
}
@end
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