【iOS开发】原生XML解析

- 日理万妓 2022-08-19 12:19 198阅读 0赞

**初始化方法：**

`- initWithContentsOfURL:`

Initializes a parser with the XML content referenced by the given URL.

`- initWithData:`  *Designated Initializer*

Initializes a parser with the XML contents encapsulated in a given data object.

`- initWithStream:`

Initializes a parser with the XML contents from the specified stream and parses it..

**一个简单的xml文件解析**

**实例：**

**.h**

**\#import ****<Foundation/Foundation.h>**

**@interface**** MyXMLParser : ****NSObject****<****NSXMLParserDelegate****>**

**@property**** (****nonatomic****,****strong****)  ****NSMutableArray**** \* arrM;**

**-(****void****)test;**

**@end**

**.m**

**\#import ****"MyXMLParser.h"**

**\#import ****"Student.h"**

**@interface**** ****MyXMLParser****()**

**\{**

**    ****NSMutableString**** \* \_elementStr;**

**    ****Student**** \* student;**

**\}**

**@end**

**@implementation**** MyXMLParser**

**-(****void****)test**

**\{**

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

**    ****NSXMLParser**** \* parser = \[\[****NSXMLParser**** ****alloc****\]****initWithContentsOfURL****:\[****NSURL**** ****URLWithString****:path\]\];**

**    parser.****delegate**** = ****self****;**

**    \[parser ****parse****\];**

**\}**

**\#pragma mark  - 解析开始**

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

**\{**

**    ****\_arrM**** = \[****NSMutableArray**** ****array****\];**

**    ****\_elementStr**** = \[****NSMutableString**** ****string****\];**

**\}**

**\#pragma mark -解析完成**

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

**\{**

**    ****NSLog****(****@"%@"****,****\_arrM****);**

**\}**

**\#pragma mark - **

**-(****void****)parser:(****NSXMLParser**** \*)parser didStartElement:(****nonnull**** ****NSString**** \*)elementName namespaceURI:(****nullable**** ****NSString**** \*)namespaceURI qualifiedName:(****nullable**** ****NSString**** \*)qName attributes:(****nonnull**** ****NSDictionary****<****NSString**** \*,****NSString**** \*> \*)attributeDict**

**\{**

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

**        ****student**** = \[\[****Student**** ****alloc****\]****init****\];**

**    \}**

**    \[****\_elementStr**** ****setString****:****@""****\];**

**\}**

**\#pragma mark  循环查找节点内容**

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

**\{**

**    ****// 拼接字符串**

**    \[****\_elementStr**** ****appendString****:string\];**

**\}**

**\#pragma mark 一个节点完成**

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

**\{**

**    ****NSString**** \*result = \[****NSString**** ****stringWithString****:****\_elementStr****\];**

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

**        \[****\_arrM**** ****addObject****:****student****\];**

**    \} ****else**** ****if**** (\[elementName ****isEqualToString****:****@"name"****\])\{**

**        ****student****.****name**** = result;**

**    \} ****else**** ****if**** (\[elementName ****isEqualToString****:****@"sex"****\]) \{**

**        ****student****.****sex**** = result;**

**    \}**

**\}**

**\#pragma  mark - 出错**

**-(****void****)parser:(****NSXMLParser**** \*)parser validationErrorOccurred:(****NSError**** \*)validationError**