主要是对文件的三种解析方法，相关的文件已经压缩附件中
.h文件
#import <UIKit/UIKit.h>
#import "StudentModel.h"
#import "GDataXMLNode.h"
@interface RootViewController : UIViewController<NSXMLParserDelegate>
@property(nonatomic,retain)NSMutableArray *dataArray;
//存放临时变量
@property(nonatomic ,retain)NSString *tempStr;
@end
.m文件
#import "RootViewController.h"
@interface RootViewController ()
@end
@implementation RootViewController
- (void)viewDidLoad {
[super viewDidLoad];
UIButton *button1 =[UIButton buttonWithType:UIButtonTypeCustom];
[button1 setTitle:@"JSON" forState:UIControlStateNormal];
UIButton *button2 =[UIButton buttonWithType:UIButtonTypeCustom];
[button2 setTitle:@"DOM" forState:UIControlStateNormal];
UIButton *button3 =[UIButton buttonWithType:UIButtonTypeCustom];
[button3 setTitle:@"SAX" forState:UIControlStateNormal];
button1.frame =CGRectMake(10, 80, 50, 20);
button2.frame =CGRectMake(30,110, 50, 20);
button3.frame =CGRectMake( 80, 150, 50, 20);
button1.layer.borderWidth =1;
button1.layer.borderColor =[UIColor blackColor].CGColor;
button2.layer.borderWidth =1;
button2.layer.borderColor =[UIColor blackColor].CGColor;
button3.layer.borderWidth =1;
button3.layer.borderColor =[UIColor blackColor].CGColor;
[self.view addSubview:button1];
[self.view addSubview:button2];
[self.view addSubview:button3];
self.view.backgroundColor =[UIColor redColor];
[button1 addTarget:self action:@selector(change1) forControlEvents:UIControlEventTouchUpInside];
[button2 addTarget:self action:@selector(change2) forControlEvents:UIControlEventTouchUpInside];
[button3 addTarget:self action:@selector(change3) forControlEvents:UIControlEventTouchUpInside];
}
//解析json
-(void)change1
{
NSString *path=[[NSBundle mainBundle]pathForResource:@"Student" ofType:@"txt"];
//根据路径将文件转换为nsJSON
NSData *data =[NSData dataWithContentsOfFile:path];
self.dataArray =[NSMutableArray array];
//创建错误信息
NSError *error =nil;
//获取数组（里面装的字典）
NSArray *array = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&error];
//遍历数组
for (NSDictionary *dic in array) {
StudentModel *stu =[StudentModel getStudentModel];
[stu setValuesForKeysWithDictionary:dic];
[self.dataArray addObject:stu];
}
//结果打印查看
StudentModel *stu1 =[self.dataArray objectAtIndex:1];
NSLog(@"%@",stu1.name);
}
-(void)change2
{
//dom解析
// NSString *path =[[NSBundle mainBundle]pathForResource:@"Student" ofType:@"xml"];
// NSData *data =[NSData dataWithContentsOfFile:path];
// self.dataArray =[NSMutableArray array];
// //转载数据（数据全部加入内存，因此说dom解析在解析大数据时比较消耗内存）
// //1.参数代表数据 2参数没用 3参数是错误信息
// NSError *error =nil;
// GDataXMLDocument *document =[[GDataXMLDocument alloc]initWithData:data options:0 error:&error];
// //获取根节点
// GDataXMLElement *rootElement =[document rootElement];
// //获取所有子节点
// NSArray *array =[rootElement elementsForName:@"student"];
//
// //遍历
// for (GDataXMLElement *node in array) {
// StudentModel *stu =[StudentModel getStudentModel];
// stu.name = [[[node elementsForName:@"name"]lastObject]stringValue];
// stu.sex =[[[node elementsForName:@"sex"]lastObject]stringValue];
// stu.number =[[[[node elementsForName:@"number"]lastObject]stringValue]integerValue];
// stu.phone =[[[[node elementsForName:@"phone"]lastObject]stringValue]integerValue];
// [self.dataArray addObject:stu];
//
// }
// StudentModel *model =[self.dataArray objectAtIndex:1];
// NSLog(@"%@",model.name);
NSString *path =[[NSBundle mainBundle]pathForResource:@"Student" ofType:@"xml"];
NSData *data =[NSData dataWithContentsOfFile:path];
self.dataArray =[NSMutableArray array];
NSError *error =nil;
GDataXMLDocument *document =[[GDataXMLDocument alloc]initWithData:data options:0 error:&error];
GDataXMLElement *rootElement =[document rootElement];
NSArray *array =[rootElement elementsForName:@"student"];
for (GDataXMLElement *node in array) {
StudentModel *stu =[StudentModel getStudentModel];
stu.name =[[[node elementsForName:@"name"]lastObject]stringValue];
stu.sex =[[[node elementsForName:@"sex"]lastObject]stringValue];
stu.number =[[[[node elementsForName:@"number"]lastObject]stringValue] integerValue];
stu.phone = [[[[node
elementsForName:@"phone"]lastObject]stringValue]integerValue];
[self.dataArray addObject:stu];
}
StudentModel *model =[self.dataArray objectAtIndex: 1];
NSLog(@"%@",model.name);
}
-(void)change3
{
//用sax方式来解析XML文件
//获取要解析的文件路径
NSString *path =[[NSBundle mainBundle]pathForResource:@"Student" ofType:@"xml"];
//把这个文件转化为nsdata
NSData *data =[NSData dataWithContentsOfFile:path];
//创建解析类
NSXMLParser *parser =[[NSXMLParser alloc]initWithData:data];
//设置代理
parser.delegate =self;
//开始解析
[parser parse];
}
-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
//发现节点内容
//记录节点内容
self.tempStr =string;
}
#pragma -mark SAX解析代理方法
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
//头节点
if ([elementName isEqualToString:@"students"]) {
self.dataArray =[NSMutableArray array];
} else if ([elementName isEqualToString:@"student"]){
StudentModel *stu =[StudentModel getStudentModel];
[self.dataArray addObject:stu];
}
}
-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
//发现尾节点
//取出stdentmodel
StudentModel *stu =[self.dataArray lastObject];
if ([elementName isEqualToString:@"number"]) {
stu.number =[self.tempStr integerValue];
} else if ([elementName isEqualToString:@"name"]){
stu.name =self.tempStr;
}else if ([elementName isEqualToString:@"sex"]){
stu.sex =self.tempStr;
}else if ([elementName isEqualToString:@"phone"]){
stu.phone =[self.tempStr integerValue];
}
}
//解析完成
-(void)parserDidEndDocument:(NSXMLParser *)parser{
NSLog(@"解析完成");
StudentModel *stu =[self.dataArray objectAtIndex:1];
NSLog(@"%@",stu.name);
}
@end
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原文地址：http://10136044.blog.51cto.com/10126044/1679371
