iOS中的xmlparsing教程
嗨，我创build一个应用程序，必须打印从server.xml中的xml文件标签的值。我试着读谷歌search下的一些文档..但我找不到它…是否有人知道简单的教程或任何用于在我的应用程序中集成xmlparsing的示例代码。
你可以用下面的代码parsingXML 。 但是你必须创build你可以在下面find的类。
NSURL *URL = [[NSURL alloc] initWithString:@"http:/sites.google.com/site/iphonesdktutorials/xml/Books.xml"]; NSString *xmlString = [[NSString alloc] initWithContentsOfURL:URL encoding:NSUTF8StringEncoding error:NULL]; NSLog(@"string: %@", xmlString); NSDictionary *xmlDoc = [NSDictionary dictionaryWithXMLString:xmlString]; NSLog(@"dictionary: %@", xmlDoc);
您需要使用XMLParser名称创build这个用于XMLparsing的类。
XMLParser.h
// // XMLParser.h // // // Copyright 2016 Darshan kunjadiya. All rights reserved. #import <Foundation/Foundation.h> #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wobjc-missing-property-synthesis" typedef NS_ENUM(NSInteger, XMLDictionaryAttributesMode) { XMLDictionaryAttributesModePrefixed = 0, //default XMLDictionaryAttributesModeDictionary, XMLDictionaryAttributesModeUnprefixed, XMLDictionaryAttributesModeDiscard }; typedef NS_ENUM(NSInteger, XMLDictionaryNodeNameMode) { XMLDictionaryNodeNameModeRootOnly = 0, //default XMLDictionaryNodeNameModeAlways, XMLDictionaryNodeNameModeNever }; static NSString *const XMLDictionaryAttributesKey = @"__attributes"; static NSString *const XMLDictionaryCommentsKey = @"__comments"; static NSString *const XMLDictionaryTextKey = @"__text"; static NSString *const XMLDictionaryNodeNameKey = @"__name"; static NSString *const XMLDictionaryAttributePrefix = @"_"; @interface XMLURLParser : NSObject <NSCopying> + (XMLURLParser *)sharedInstance; @property (nonatomic, assign) BOOL collapseTextNodes; // defaults to YES @property (nonatomic, assign) BOOL stripEmptyNodes; // defaults to YES @property (nonatomic, assign) BOOL trimWhiteSpace; // defaults to YES @property (nonatomic, assign) BOOL alwaysUseArrays; // defaults to NO @property (nonatomic, assign) BOOL preserveComments; // defaults to NO @property (nonatomic, assign) BOOL wrapRootNode; // defaults to NO @property (nonatomic, assign) XMLDictionaryAttributesMode attributesMode; @property (nonatomic, assign) XMLDictionaryNodeNameMode nodeNameMode; - (NSDictionary *)dictionaryWithParser:(NSXMLParser *)parser; - (NSDictionary *)dictionaryWithData:(NSData *)data; - (NSDictionary *)dictionaryWithString:(NSString *)string; - (NSDictionary *)dictionaryWithFile:(NSString *)path; @end @interface NSDictionary (XMLParser) + (NSDictionary *)dictionaryWithXMLParser:(NSXMLParser *)parser; + (NSDictionary *)dictionaryWithXMLData:(NSData *)data; + (NSDictionary *)dictionaryWithXMLString:(NSString *)string; + (NSDictionary *)dictionaryWithXMLFile:(NSString *)path; - (NSDictionary *)attributes; - (NSDictionary *)childNodes; - (NSArray *)comments; - (NSString *)nodeName; - (NSString *)innerText; - (NSString *)innerXML; - (NSString *)XMLString; - (NSArray *)arrayValueForKeyPath:(NSString *)keyPath; - (NSString *)stringValueForKeyPath:(NSString *)keyPath; - (NSDictionary *)dictionaryValueForKeyPath:(NSString *)keyPath; @end @interface NSString (XMLParser) - (NSString *)XMLEncodedString; @end #pragma GCC diagnostic pop
XMLParser.m
// // XMLParser.m // // // Copyright 2016 Darshan kunjadiya. All rights reserved. #import "XMLParser.h" #pragma GCC diagnostic ignored "-Wobjc-missing-property-synthesis" #pragma GCC diagnostic ignored "-Wdirect-ivar-access" #pragma GCC diagnostic ignored "-Wformat-non-iso" #pragma GCC diagnostic ignored "-Wgnu" #import <Availability.h> #if !__has_feature(objc_arc) #error This class requires automatic reference counting #endif @interface XMLURLParser () <NSXMLParserDelegate> @property (nonatomic, strong) NSMutableDictionary *root; @property (nonatomic, strong) NSMutableArray *stack; @property (nonatomic, strong) NSMutableString *text; @end @implementation XMLURLParser + (XMLURLParser *)sharedInstance { static dispatch_once_t once; static XMLURLParser *sharedInstance; dispatch_once(&once, ^{ sharedInstance = [[XMLURLParser alloc] init]; }); return sharedInstance; } - (id)init { if ((self = [super init])) { _collapseTextNodes = YES; _stripEmptyNodes = YES; _trimWhiteSpace = YES; _alwaysUseArrays = NO; _preserveComments = NO; _wrapRootNode = NO; } return self; } - (id)copyWithZone:(NSZone *)zone { XMLURLParser *copy = [[[self class] allocWithZone:zone] init]; copy.collapseTextNodes = _collapseTextNodes; copy.stripEmptyNodes = _stripEmptyNodes; copy.trimWhiteSpace = _trimWhiteSpace; copy.alwaysUseArrays = _alwaysUseArrays; copy.preserveComments = _preserveComments; copy.attributesMode = _attributesMode; copy.nodeNameMode = _nodeNameMode; copy.wrapRootNode = _wrapRootNode; return copy; } - (NSDictionary *)dictionaryWithParser:(NSXMLParser *)parser { [parser setDelegate:self]; [parser parse]; id result = _root; _root = nil; _stack = nil; _text = nil; return result; } - (NSDictionary *)dictionaryWithData:(NSData *)data { NSXMLParser *parser = [[NSXMLParser alloc] initWithData:data]; return [self dictionaryWithParser:parser]; } - (NSDictionary *)dictionaryWithString:(NSString *)string { NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding]; return [self dictionaryWithData:data]; } - (NSDictionary *)dictionaryWithFile:(NSString *)path { NSData *data = [NSData dataWithContentsOfFile:path]; return [self dictionaryWithData:data]; } + (NSString *)XMLStringForNode:(id)node withNodeName:(NSString *)nodeName { if ([node isKindOfClass:[NSArray class]]) { NSMutableArray *nodes = [NSMutableArray arrayWithCapacity:[node count]]; for (id individualNode in node) { [nodes addObject:[self XMLStringForNode:individualNode withNodeName:nodeName]]; } return [nodes componentsJoinedByString:@"\n"]; } else if ([node isKindOfClass:[NSDictionary class]]) { NSDictionary *attributes = [(NSDictionary *)node attributes]; NSMutableString *attributeString = [NSMutableString string]; for (NSString *key in [attributes allKeys]) { [attributeString appendFormat:@" %@=\"%@\"", [[key description] XMLEncodedString], [[attributes[key] description] XMLEncodedString]]; } NSString *innerXML = [node innerXML]; if ([innerXML length]) { return [NSString stringWithFormat:@"<%1$@%2$@>%3$@</%1$@>", nodeName, attributeString, innerXML]; } else { return [NSString stringWithFormat:@"<%@%@/>", nodeName, attributeString]; } } else { return [NSString stringWithFormat:@"<%1$@>%2$@</%1$@>", nodeName, [[node description] XMLEncodedString]]; } } - (void)endText { if (_trimWhiteSpace) { _text = [[_text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] mutableCopy]; } if ([_text length]) { NSMutableDictionary *top = [_stack lastObject]; id existing = top[XMLDictionaryTextKey]; if ([existing isKindOfClass:[NSArray class]]) { [existing addObject:_text]; } else if (existing) { top[XMLDictionaryTextKey] = [@[existing, _text] mutableCopy]; } else { top[XMLDictionaryTextKey] = _text; } } _text = nil; } - (void)addText:(NSString *)text { if (!_text) { _text = [NSMutableString stringWithString:text]; } else { [_text appendString:text]; } } - (void)parser:(__unused NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(__unused NSString *)namespaceURI qualifiedName:(__unused NSString *)qName attributes:(NSDictionary *)attributeDict { [self endText]; NSMutableDictionary *node = [NSMutableDictionary dictionary]; switch (_nodeNameMode) { case XMLDictionaryNodeNameModeRootOnly: { if (!_root) { node[XMLDictionaryNodeNameKey] = elementName; } break; } case XMLDictionaryNodeNameModeAlways: { node[XMLDictionaryNodeNameKey] = elementName; break; } case XMLDictionaryNodeNameModeNever: { break; } } if ([attributeDict count]) { switch (_attributesMode) { case XMLDictionaryAttributesModePrefixed: { for (NSString *key in [attributeDict allKeys]) { node[[XMLDictionaryAttributePrefix stringByAppendingString:key]] = attributeDict[key]; } break; } case XMLDictionaryAttributesModeDictionary: { node[XMLDictionaryAttributesKey] = attributeDict; break; } case XMLDictionaryAttributesModeUnprefixed: { [node addEntriesFromDictionary:attributeDict]; break; } case XMLDictionaryAttributesModeDiscard: { break; } } } if (!_root) { _root = node; _stack = [NSMutableArray arrayWithObject:node]; if (_wrapRootNode) { _root = [NSMutableDictionary dictionaryWithObject:_root forKey:elementName]; [_stack insertObject:_root atIndex:0]; } } else { NSMutableDictionary *top = [_stack lastObject]; id existing = top[elementName]; if ([existing isKindOfClass:[NSArray class]]) { [existing addObject:node]; } else if (existing) { top[elementName] = [@[existing, node] mutableCopy]; } else if (_alwaysUseArrays) { top[elementName] = [NSMutableArray arrayWithObject:node]; } else { top[elementName] = node; } [_stack addObject:node]; } } - (NSString *)nameForNode:(NSDictionary *)node inDictionary:(NSDictionary *)dict { if (node.nodeName) { return node.nodeName; } else { for (NSString *name in dict) { id object = dict[name]; if (object == node) { return name; } else if ([object isKindOfClass:[NSArray class]] && [object containsObject:node]) { return name; } } } return nil; } - (void)parser:(__unused NSXMLParser *)parser didEndElement:(__unused NSString *)elementName namespaceURI:(__unused NSString *)namespaceURI qualifiedName:(__unused NSString *)qName { [self endText]; NSMutableDictionary *top = [_stack lastObject]; [_stack removeLastObject]; if (!top.attributes && !top.childNodes && !top.comments) { NSMutableDictionary *newTop = [_stack lastObject]; NSString *nodeName = [self nameForNode:top inDictionary:newTop]; if (nodeName) { id parentNode = newTop[nodeName]; if (top.innerText && _collapseTextNodes) { if ([parentNode isKindOfClass:[NSArray class]]) { parentNode[[parentNode count] - 1] = top.innerText; } else { newTop[nodeName] = top.innerText; } } else if (!top.innerText && _stripEmptyNodes) { if ([parentNode isKindOfClass:[NSArray class]]) { [parentNode removeLastObject]; } else { [newTop removeObjectForKey:nodeName]; } } else if (!top.innerText && !_collapseTextNodes && !_stripEmptyNodes) { top[XMLDictionaryTextKey] = @""; } } } } - (void)parser:(__unused NSXMLParser *)parser foundCharacters:(NSString *)string { [self addText:string]; } - (void)parser:(__unused NSXMLParser *)parser foundCDATA:(NSData *)CDATABlock { [self addText:[[NSString alloc] initWithData:CDATABlock encoding:NSUTF8StringEncoding]]; } - (void)parser:(__unused NSXMLParser *)parser foundComment:(NSString *)comment { if (_preserveComments) { NSMutableDictionary *top = [_stack lastObject]; NSMutableArray *comments = top[XMLDictionaryCommentsKey]; if (!comments) { comments = [@[comment] mutableCopy]; top[XMLDictionaryCommentsKey] = comments; } else { [comments addObject:comment]; } } } @end @implementation NSDictionary(XMLDictionary) + (NSDictionary *)dictionaryWithXMLParser:(NSXMLParser *)parser { return [[[XMLURLParser sharedInstance] copy] dictionaryWithParser:parser]; } + (NSDictionary *)dictionaryWithXMLData:(NSData *)data { return [[[XMLURLParser sharedInstance] copy] dictionaryWithData:data]; } + (NSDictionary *)dictionaryWithXMLString:(NSString *)string { return [[[XMLURLParser sharedInstance] copy] dictionaryWithString:string]; } + (NSDictionary *)dictionaryWithXMLFile:(NSString *)path { return [[[XMLURLParser sharedInstance] copy] dictionaryWithFile:path]; } - (NSDictionary *)attributes { NSDictionary *attributes = self[XMLDictionaryAttributesKey]; if (attributes) { return [attributes count]? attributes: nil; } else { NSMutableDictionary *filteredDict = [NSMutableDictionary dictionaryWithDictionary:self]; [filteredDict removeObjectsForKeys:@[XMLDictionaryCommentsKey, XMLDictionaryTextKey, XMLDictionaryNodeNameKey]]; for (NSString *key in [filteredDict allKeys]) { [filteredDict removeObjectForKey:key]; if ([key hasPrefix:XMLDictionaryAttributePrefix]) { filteredDict[[key substringFromIndex:[XMLDictionaryAttributePrefix length]]] = self[key]; } } return [filteredDict count]? filteredDict: nil; } return nil; } - (NSDictionary *)childNodes { NSMutableDictionary *filteredDict = [self mutableCopy]; [filteredDict removeObjectsForKeys:@[XMLDictionaryAttributesKey, XMLDictionaryCommentsKey, XMLDictionaryTextKey, XMLDictionaryNodeNameKey]]; for (NSString *key in [filteredDict allKeys]) { if ([key hasPrefix:XMLDictionaryAttributePrefix]) { [filteredDict removeObjectForKey:key]; } } return [filteredDict count]? filteredDict: nil; } - (NSArray *)comments { return self[XMLDictionaryCommentsKey]; } - (NSString *)nodeName { return self[XMLDictionaryNodeNameKey]; } - (id)innerText { id text = self[XMLDictionaryTextKey]; if ([text isKindOfClass:[NSArray class]]) { return [text componentsJoinedByString:@"\n"]; } else { return text; } } - (NSString *)innerXML { NSMutableArray *nodes = [NSMutableArray array]; for (NSString *comment in [self comments]) { [nodes addObject:[NSString stringWithFormat:@"<!--%@-->", [comment XMLEncodedString]]]; } NSDictionary *childNodes = [self childNodes]; for (NSString *key in childNodes) { [nodes addObject:[XMLURLParser XMLStringForNode:childNodes[key] withNodeName:key]]; } NSString *text = [self innerText]; if (text) { [nodes addObject:[text XMLEncodedString]]; } return [nodes componentsJoinedByString:@"\n"]; } - (NSString *)XMLString { if ([self count] == 1 && ![self nodeName]) { //ignore outermost dictionary return [self innerXML]; } else { return [XMLURLParser XMLStringForNode:self withNodeName:[self nodeName] ?: @"root"]; } } - (NSArray *)arrayValueForKeyPath:(NSString *)keyPath { id value = [self valueForKeyPath:keyPath]; if (value && ![value isKindOfClass:[NSArray class]]) { return @[value]; } return value; } - (NSString *)stringValueForKeyPath:(NSString *)keyPath { id value = [self valueForKeyPath:keyPath]; if ([value isKindOfClass:[NSArray class]]) { value = [value count]? value[0]: nil; } if ([value isKindOfClass:[NSDictionary class]]) { return [(NSDictionary *)value innerText]; } return value; } - (NSDictionary *)dictionaryValueForKeyPath:(NSString *)keyPath { id value = [self valueForKeyPath:keyPath]; if ([value isKindOfClass:[NSArray class]]) { value = [value count]? value[0]: nil; } if ([value isKindOfClass:[NSString class]]) { return @{XMLDictionaryTextKey: value}; } return value; } @end @implementation NSString (XMLDictionary) - (NSString *)XMLEncodedString { return [[[[[self stringByReplacingOccurrencesOfString:@"&" withString:@"&"] stringByReplacingOccurrencesOfString:@"<" withString:@"<"] stringByReplacingOccurrencesOfString:@">" withString:@">"] stringByReplacingOccurrencesOfString:@"\"" withString:@"""] stringByReplacingOccurrencesOfString:@"\'" withString:@"'"]; } @end
我希望这个答案对你有用。
使用TBXmlparsing器..这是最简单的方法，也更less的时间来parsing一个值..我可以下载TBXMLDemo项目在github上，并打印，而不是标签u可以使用表视图单元格，并将其select为null.So它看起来像标签似的。如果你需要更多的细节评论我，..我会帮助它..