Objective C iPhone的XMLStreamReader？

概述我使用 XMLWriter生成xml.现在我想用一些Reader库/框架阅读这个xml.是否有任何补充框架/库可用于此. 我目前正在寻找使用TouchXML库来阅读它,但它不能以预期的方式工作,因为它不支持流读取. 我想做点什么： XmlReader pReader = XmlTextReader.Create(pPath); while (pReader.Read()){ 我使用 XMLWriter生成xml.现在我想用一些Reader库/框架阅读这个xml.是否有任何补充框架/库可用于此.

我目前正在寻找使用touchXML库来阅读它,但它不能以预期的方式工作,因为它不支持流读取.

我想做点什么：

XmlReader pReader = XmlTextReader.Create(pPath);    while (pReader.Read()){        switch (pReader.Localname){            case EXPEL_DEVICES:            {                //if ((pimportFlags & (int)ExportClass.Devices) != 0)                //{                for (pReader.ReadToFollowing(LOCAL_name,nameSPACE_EXPORT);                     !pReader.EOF && pReader.Localname == @"name"; )                {                    if (!pReader.ReadToFollowing(DEVICE_ID,nameSPACE_EXPORT))                        throw new AException(DEVICE_ID);                    Nsstring *value = pReader.ReadElementContentAsstring();                }            }                break;        }    }

解决方法 在失去我自己的声望值50后,我终于使用了libxml2并将我的XMLStreamReader类作为以下内容,我希望我之前能够找到它：P.请注意,为了使用它,我们需要在我们的框架中包含libxml2.dylib,并在构建设置中将-lxml2添加到其他链接器标志中并在标头搜索路径中添加/usr/include / libxml2

头文件：

#import <Foundation/Foundation.h>#import <libxml/xmlreader.h>@interface XMLStreamReader : NSObject {    xmlTextReaderPtr xmlReader;}@property (nonatomic,Readonly,assign) BOol eof;@property (nonatomic,retain) Nsstring *localname;@property (nonatomic,assign) xmlElementType nodeType;@property (nonatomic,assign) BOol read;@property (nonatomic,assign) BOol readElementContentAsBoolean;@property (nonatomic,retain) Nsstring *readElementContentAsstring;- (voID) close;- (ID) getAttribute:(Nsstring *) paramname;- (ID) initWithPath:(Nsstring *) path;@end

实施文件：

#import "XMLStreamReader.h"@implementation XMLStreamReader@dynamic eof;@dynamic localname;@dynamic nodeType;@dynamic read;@dynamic readElementContentAsBoolean;@dynamic readElementContentAsstring;- (voID) dealloc{    xmlFreeTextReader(xmlReader);    [super dealloc];}/** * xmlTextReaderClose: * @reader:  the xmlTextReaderPtr used * * This method releases any resources allocated by the current instance * changes the state to Closed and close any underlying input. * * Returns 0 or -1 in case of error */- (voID) close{    xmlTextReaderClose(xmlReader);}/** * @reader:  the xmlTextReaderPtr used * @name: the qualifIEd name of the attribute. * * ProvIDes the value of the attribute with the specifIEd qualifIEd name. * * Returns a string containing the value of the specifIEd attribute,or NulL *    in case of error. The string must be deallocated by the caller. */- (ID) getAttribute:(Nsstring *) paramname{    xmlChar *attribute = xmlTextReaderGetAttribute(xmlReader,(xmlChar *)[paramname UTF8String]);    if(attribute != NulL){        Nsstring *rtString = [Nsstring stringWithUTF8String:(const char *)attribute];        free(attribute);        return rtString;    }    return NulL;}/** * Checks if,the reader has reached to the end of file * 'EOF' is not used as it is already defined in stdio.h * as '#define  EOF (-1)' */- (BOol) eof{    return xmlTextReaderReadState(xmlReader) == XML_TEXTREADER_MODE_EOF;}/** * Initializing the xml stream reader with some uri * or local path. */- (ID) initWithPath:(Nsstring *) path{    if(self = [super init]){        xmlReader = xmlNewTextReaderfilename([path UTF8String]);        if(xmlReader == NulL)            return nil;    }    return self;}/** * @reader:  the xmlTextReaderPtr used * * The local name of the node. * * Returns the local name or NulL if not available,*   if non NulL it need to be freed by the caller. */- (Nsstring *) localname{    xmlChar *lclname = xmlTextReaderLocalname(xmlReader);    if(lclname != NulL){        Nsstring *rtString = [Nsstring stringWithUTF8String:(const char *)lclname];        free(lclname);        return rtString;    }    return NulL;}- (xmlElementType) nodeType{    return xmlTextReaderNodeType(xmlReader);}/** * @reader:  the xmlTextReaderPtr used * *  Moves the position of the current instance to the next node in *  the stream,exposing its propertIEs. * *  Returns 1 if the node was read successfully,0 if there is no more *          nodes to read,or -1 in case of error */- (BOol) read{    return xmlTextReaderRead(xmlReader);}/** * @reader:  the xmlTextReaderPtr used * * Reads the contents of an element or a text node as a Boolean. * * Returns a string containing the contents of the Element or Text node,*         or NulL if the reader is positioned on any other type of node. *         The string must be deallocated by the caller. */- (voID) readElementContentAsBoolean{    return [[self readElementContentAsstring] boolValue];}/** * @reader:  the xmlTextReaderPtr used * * Reads the contents of an element or a text node as a string. * * Returns a string containing the contents of the Element or Text node,*         or NulL if the reader is positioned on any other type of node. *         The string must be deallocated by the caller. */- (Nsstring *) readElementContentAsstring{    xmlChar *content = xmlTextReaderReadString(xmlReader);    if(content != NulL){        Nsstring *rtString = [Nsstring stringWithUTF8String:(const char *)content];        free(content);        return rtString;    }    return NulL;}/** * @reader:  the xmlTextReaderPtr used * @localname:  the local name of the attribute. * @namespaceURI:  the namespace URI of the attribute. * * Moves the position of the current instance to the attribute with the * specifIEd local name and namespace URI. * * Returns 1 in case of success,-1 in case of error,0 if not found */- (int) readToFollowing:(Nsstring *) localname namespace:(Nsstring *) namespaceURI{    return xmlTextReaderMovetoAttributeNs(xmlReader,(xmlChar *)[localname UTF8String],(xmlChar *)[namespaceURI UTF8String]);}@end

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