Two common methods of "iOS development-Network" parsing XML data

There are two common ways to parse XML data

First Kind

Parsing XML data using Google's Gdataxmlnode
Dom mode parsing is used.
First swallow the XML and then the 1.1-point resolution

The second Kind

Parsing XML data using Apple's own Nsxmlparser
Using the Sax parsing method
Parsing of a tag for a token

First step of Use step

First put the Gdataxml folder into the project

Step Two

Change what's inside bulid setting.

Change header File Search path

Add a path inside the header Search paths/USR/INCLUDE/LIBXML2

Add-LXML2 inside the other Linker flags

Change the GDATAXMLNODE.M file to a non-arc environment

The third step introduces the header file

#import "GDataXML/GDataXMLNode.h"

Code

Load the entire document gdataxmldocument *doc = [[Gdataxmldocument alloc] initwithdata:data options:0Error:nil];Get with elemental gdataxmlelement *rootelement = doc. RootElement;Get all the video elements Nsarray *elements= [rootelement elementsforname:@"Video"];Iterating over the array for (Gdataxmlelement *eleminchelements) {Video *video = [[Video alloc] init];Video. ID= [Elem attributeforname:@"id"]. StringValue;Video. Length= [Elem attributeforname:@"Length"]. StringValue;Video. Name= [Elem attributeforname:@"Name"]. StringValue;Video. Image= [Elem attributeforname:@"Image"]. StringValue;Video. URL= [Elem attributeforname:@"url"]. StringValue;[Self. VideosAddobject:video];}

The second way to use parsing

This method is provided by Apple and requires the proxy method to be set

The proxy method is invoked whenever a tag is encountered

//创建解析器NSXMLParser *parser = [[NSXMLParser alloc] initWithData:data];//设置解析器的代理parser.delegateself;//开始解析[parser parse];//这是一个同步操作

Proxy method

/** * will be called when parsing to the beginning of the document * /- (void) Parserdidstartdocument: (Nsxmlparser *) parser{}/** * Parse to the beginning of an element will call * * @param elementname element name * @param attributedict Property Dictionary */- (void) Parser: (Nsxmlparser *) parser didstartelement: (NSString *) elementname NamespaceURI: (NSString *) NamespaceURI QualifiedName: (NSString *) QName attributes: (nsdictionary *) attributedict{if([@"Videos"Isequaltostring:elementname])return;    Hmvideo *video = [Hmvideo videowithdict:attributedict]; [Self.videos Addobject:video];}/** * Parse to the end of an element will call * * @param elementname element name */- (void) Parser: (Nsxmlparser *) parser didendelement: (NSString *) elementname NamespaceURI: (NSString *) NamespaceURI QualifiedName: (NSString *) qname{}/** * will be called when parsing to the end of the document (parse end) */- (void) Parserdidenddocument: (Nsxmlparser *) parser{}

Two common methods of "iOS development-Network" parsing XML data