iOS UI 14 网络解析

//

// RootViewController.m

// ui - 14 数据解析

//

// Created by dllo on 15/11/26.

// Copyright (c) 2015年 dllo. All rights reserved.

//

#import "RootViewController.h"

#import "Student.h"

#import "GDataXMLNode.h"

@interface RootViewController ()<NSXMLParserDelegate>

@property (nonatomic,
retain)NSMutableArray *stuArr;

@property (nonatomic,
retain)NSMutableArray *stuArr2;

@property (nonatomic ,copy)NSString *elementStr;

@end

@implementation RootViewController

- (void)dealloc

{

[_stuArr release];

[_stuArr2 release];

// [_elementStr release];

[super dealloc];

}

- (void)viewDidLoad {

[super viewDidLoad];

UIButton *button1 = [UIButton buttonWithType:UIButtonTypeCustom];

button1.frame = CGRectMake(50, 100, 100, 50);

button1.backgroundColor = [UIColor
cyanColor];

[button1 setTitle:@"XML/SAX"
forState:UIControlStateNormal];

[button1 addTarget:self
action:@selector(saxAction)
forControlEvents:UIControlEventTouchUpInside];

[self.view
addSubview:button1];

UIButton *button2 = [UIButton
buttonWithType:UIButtonTypeCustom];

button2.frame =
CGRectMake(50, 200, 100, 50);

button2.backgroundColor = [UIColor
cyanColor];

[button2 setTitle:@"XML/Dom"
forState:UIControlStateNormal];

[button2 addTarget:self
action:@selector(domAction)
forControlEvents:UIControlEventTouchUpInside];

[self.view
addSubview:button2];

// Do any additional setup after loading the view.

}

//dom 与 sax
比较

// dom 先将数据全部取到内存,在解析, sax逐行取数据并解析

//dom更耗费内存,不适合大数据解析,但更加灵活,
可以解析获取指定行数据

//sax不耗费内存,但不灵活,只能逐行按顺序解析

/*******************************XML的sax工具解析************************/

- (void)saxAction

{

NSString *file = [[NSBundle
mainBundle] pathForResource:@"Student"
ofType:@"xml"];

//二进制流
安全

NSData *data = [NSData
dataWithContentsOfFile:file ];

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

parser.delegate =
self;

//开始解析

[parser parse];

}

- (void)parserDidStartDocument:(NSXMLParser *)parser

{

NSLog(@"开始解析");

//开辟数组空间

self.stuArr = [NSMutableArray
array];

}

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

{

NSLog(@"只解析开始标签:%@",elementName);

//可以全局访问开始标签

self.elementStr = elementName;

//若开始标签是student,创建学生对象并添加到数组中

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

Student *stu = [[Student
alloc]init];

[self.stuArr
addObject:stu];

[stu release];

}

}

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

{

NSLog(@"解析标签值:%@",string);

//获取正在编辑的学生对象

Student *stu =
self.stuArr.lastObject;

//为学生对象赋值

if ([self.elementStr
isEqualToString:@"name"]) {

stu.name = string;

}

if ([self.elementStr
isEqualToString:@"number"]) {

stu.number = string;

}

if ([self.elementStr
isEqualToString:@"sex"]) {

stu.sex = string;

}

if ([self.elementStr
isEqualToString:@"phone"]) {

stu.phone = string;

}

}

- (void)parserDidEndDocument:(NSXMLParser *)parser

{

NSLog(@"结束解析");

for (Student *stu
in self.stuArr) {

NSLog(@"%@ %@ %@ %@",stu.name, stu.sex, stu.number, stu.phone);

}

}

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

{

NSLog(@"只解析结束标签:%@",elementName);

//********************************防止已经解析好的标签值被非预期的标签值覆盖

self.elementStr =nil;

}

/*******************************XML的dom工具解析************************/

-(void)domAction

{

self.stuArr2 = [NSMutableArray
array];

NSString *file = [[NSBundle
mainBundle] pathForResource:@"Student"
ofType:@"xml"];

//二进制流
安全

NSData *data = [NSData
dataWithContentsOfFile:file ];

//*****************添加第三方工具dom的方法

//添加路径 : buliding setting - > Header Search paths - >
添加路径: /usr/include/libxml2

//
添加库:building Phases -> Link...
添加库:libxml2.dylib或libxml2.tbd

//参数1
从文件中读取的data对象

//参数2
预留参数
写0;

//参数3
错误信息,
若不需要可写nil

GDataXMLDocument *xmLD = [[[GDataXMLDocument
alloc]initWithData:data
options:0 error:nil]autorelease];

GDataXMLElement *xmLE = xmLD.rootElement;

// NSLog(@"整体信息:%@", xmLE);

for (GDataXMLElement *subxmle
in xmLE.children) {

// NSLog(@"每名学生的信息:%@", subxmle);

//创建学生对象

Student *stu = [[Student
alloc]init];

for (GDataXMLElement *element
in subxmle.children) {

// NSLog(@"具体信息,每一条信息,
如名字,学号,性别,电话:%@",element);

//有一个属性

//NSLog(@"标签:%@
标签值:%@",element.name, element.stringValue);

[stu setValue:element.stringValue
forKey:element.name];

}

[self.stuArr2
addObject:stu];

[stu release];

}

for (Student *stu
in self.stuArr2) {

NSLog(@"%@ %@ %@ %@",stu.name, stu.sex, stu.number, stu.phone);

}

}

- (void)didReceiveMemoryWarning {

[super
didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

/*

#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

// Get the new view controller using [segue destinationViewController].

// Pass the selected object to the new view controller.

}

*/

@end