解析XML

快来打我* 2022-08-01 14:48 236阅读 0赞

//  ParserDataViewController.m

//  AppUI组件学习

//  Created by 麦子 on 15/6/27.

\#import "ParserDataViewController.h"

\#import "StudentByXml.h"

@interface ParserDataViewController ()\{

NSMutableArray \*array;

StudentByXml \*xmlEntity;

NSString \*proName;

bool flag;

@end

@implementation ParserDataViewController

\- (void)viewDidLoad \{

\[superviewDidLoad\];

self.view.backgroundColor = \[UIColorwhiteColor\];

self.title = @"xml和Json数据解析";

\[self create\];

\- (void)create\{

UIButton \*json = \[UIButtonbuttonWithType:UIButtonTypeRoundedRect\];

\[json setTitle:@"json解析"forState:UIControlStateNormal\];

json.tag = 1;

json.frame = CGRectMake(50, 100, 300,  100);

\[json addTarget:selfaction:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside\];

\[self.view addSubview:json\];

UIButton \*xml = \[UIButtonbuttonWithType:UIButtonTypeRoundedRect\];

\[xml setTitle:@"xml解析"forState:UIControlStateNormal\];

xml.frame = CGRectMake(50, 300, 300,  100);

xml.tag = 2;

\[xml addTarget:selfaction:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside\];

\[self.view addSubview:xml\];

// 初步熟悉网络请求

\- (void)netWorkByStudent:(NSString \*)urlRequest\{

//  组装URL请求对象

NSURL \*url = \[NSURL URLWithString:urlRequest\];

NSMutableURLRequest \*request = \[\[NSMutableURLRequestalloc\]  initWithURL:url\];

//  请求设置

\[request setHTTPMethod:@"post"\];

//  设置参数

NSString \*str = @"city=AA&password=12345";

NSData \*data = \[str dataUsingEncoding:NSUTF8StringEncoding\];

\[request setHTTPBody:data\];

//  返回结果 \-- 同步和异步

NSData \*result = \[NSURLConnection sendSynchronousRequest:request

returningResponse:nil error:nil\];

// 对数据处理，如字符串

NSString \*resultStr = \[\[NSStringalloc\] initWithData:result encoding:NSUTF8StringEncoding\];

\- (void)btnClick:(UIButton \*)btn\{

switch (btn.tag) \{

case 1:\{

break;

case 2:\{

// 获取完整路径

NSString \*path = \[\[NSBundle mainBundle\]pathForResource:@"xml\_demo" ofType:@"xml"\];

// 读到内存中

NSData \*data =  \[NSData dataWithContentsOfFile:path\];

// 构建xml对象

NSXMLParser \*parser = \[\[NSXMLParser alloc\] initWithData:data\];

// 设定代理对象

parser.delegate = self;

// 开始转换

\[parser parse\];

// 解析内存数据

//            NSString \*content = \[\[NSString alloc\] initWithData:data encoding:NSUTF8StringEncoding\];

//            NSLog(@"%@",content);

break;

default:

break;

// 文档开始

\- (void)parserDidStartDocument:(NSXMLParser \*)parser\{

array = \[\[NSMutableArray alloc\] initWithCapacity:100\];

// 元素开始

\- (void)parser:(NSXMLParser \*)parser didStartElement:(NSString \*)elementName namespaceURI:(NSString \*)namespaceURI qualifiedName:(NSString \*)qName attributes:(NSDictionary \*)attributeDict\{

if (flag) \{

proName = elementName;

if (\[elementName isEqualToString:@"student"\]) \{

xmlEntity = \[\[StudentByXml alloc\] init\];

flag = true;

// 获取属性\----强大的KVC，对于不确定但是有规律的key来说，简单方便。

NSArray \*keyArray = \[attributeDict allKeys\];

for (NSString \*key  in keyArray) \{

\[xmlEntity setValue:\[attributeDict objectForKey:key\] forKey:key\];

// 利用KVC形式设置数据

\- (void)parser:(NSXMLParser \*)parser foundCharacters:(NSString \*)string\{

string = \[string stringByTrimmingCharactersInSet:\[NSCharacterSet whitespaceCharacterSet\]\];

//    if (!\[string isEqualToString:@"\\n"\]) \{

if (flag && proName.length >  0 && string.length > 0) \{

\[xmlEntity setValue:string forKey:proName\];

proName = @"";

//    \}

// 元素结束

\- (void)parser:(NSXMLParser \*)parser didEndElement:(NSString \*)elementName namespaceURI:(NSString \*)namespaceURI qualifiedName:(NSString \*)qName\{

if (flag && \[elementName isEqualToString:@"student"\]) \{

flag = false;

\[array addObject:xmlEntity\];

NSLog(@"%@--%@---%ld--%@---%@",xmlEntity.name,xmlEntity.sex,xmlEntity.age,xmlEntity.school,xmlEntity.area);

// 文档结束

\- (void)parserDidEndDocument:(NSXMLParser \*)parser\{

NSLog(@"%@",array);

\- (void)didReceiveMemoryWarning \{

\[super didReceiveMemoryWarning\];

@end