http://www.ffasp.com/rss/rss.asphttp://www.ffasp.com/content.asp?newsid=834Google SiteMap的作用及协议格式详解 ?K?窨? Google SiteMap Protocol是Google自己推出的一种站点地图协议，此协议文件基于早期的robots.txt文件协议，并有所升级。在Google官方指南中指出加入了Google SiteMap文件的网站将更有利于Google网页爬行机器人的爬行索引，这样将提高索引网站内容的效率和准确度。文件协议应用了简单的XML格式，一共用到6个标签，其中关键标签包括链接地址、更新时间、更新频率和索引优先权。 M?*"B? L崒蓳YAΤ Google SiteMap文件生成后格式如下： :?^舺曋1? <urlset xmlns="http://www.google.com/schemas/sitemap/0.84"> ?观C?爯? <url> 诮0JlL鯫S <loc>http://www.ffasp.com</loc> 闐}牜倍焃? <lastmod>2005-06-03T04:20-08:00</lastmod> I2櫽p_雭. <changefreq>always</changefreq> Jm厡?溁 <priority>1.0</priority> 蛄 M萷氶坬 </url> ?M柝~鞙 <url> 鮳i?O/_ <loc>http://www.ffasp.com/index.asp</loc> 攞梧Ｓ菛? <lastmod>200Mon, 31 Dec 2007 15:28:11 GMThttp://www.ffasp.com/content.asp?newsid=639解析数据XML 解析器通常情况下会处理XML文档中的所有文本。当XML元素被解析的时候，XML元素内部的文本也会被解析:<message>This text is also parsed</message>XML解析器这样做的原因是XML元素内部可能还包含了别的元素，象下面的例子，name元素内部包含了first和last两个元素:<name><first>Bill</first><last>Gates</last></name>解析器会认为上面的代码是这样的:<name><first>Bill</first><last>Gates</last></name>转义字符不合法的XML字符必须被替换为Wed, 14 Nov 2007 07:51:48 GMThttp://www.ffasp.com/content.asp?newsid=249Sat, 29 Sep 2007 22:24:34 GMThttp://www.ffasp.com/content.asp?newsid=234下载：http://www.hlib.cn/down/down.asp?downid=358XMLDOM是用来访问和操作XML文档的编程接口规范。 　　1、简介　　XMLDOM被设计为可用于任何语言和任何操作系统。借助DOM，程序员可以创建XML文档、遍历其结构，增、改、删其元素。DOM将整个XML文档视作一棵树，文档级的元素是树的根。　　2、MS的XML解析，IE5.0以上。　　是一个COM组件，至少包含下列对象：　　（1）Micosoft.XMLDOM　　（2）Micosoft.XMLDOM.parseError，有如下属性：PropertyDescriptionerrorCodeReturns a long integer error codereasonReturns a string explaining the reason for the errorlineReturns a long integer representing the line number for the errorlinePosReturns a long integer representing the line position for the errorsrcTextReturns a string containing the line that caused the errorurlReturns the url pointing the loaded documentfilePosReturns a long integer file position of the error　　（3）Microsoft.XMLHTTP，有如下属性：PropertyDescriptionreadyStateReturns the state of the documentresponseBodyReturns the response as an array of unsigned bytesresponseStreamReturns the response as an IStreamresponseTextReturns the response as a stringresponseXMLReturns the response as an xml documentstatusReturns the status code as a numberstatusTextReturns the status as a string有如下方法：PropertyDescriptionabort()Cancel the current http requestgetAllResponseHeaders()Returns the value of the http headersgetResponseHeader(headerName)Returns the value of one specified http headeropen(method, url, async, userid, password)Opens http request, and specifies the informationsend()Send the http request to the serversetRequestHeader(headerName,headerValue)Specifies the name of a http header　　（4）Node的类型nodeTypeNamed ConstantnodeTypeStringnodeNamenodeValue1ELEMENT_NODEelementtagNamenull2ATTRIBUTE_NODEattributenamevalue3TEXT_NODEtext#textcontent of node4CDATA_SECTION_NODEcdatasection#cdata-sectioncontent of node5ENTITY_REFERENCE_NODEentityreferenceentity reference namenull6ENTITY_NODEentityentity namenull7PROCESSING_INSTRUCTION_NODEprocessinginstructiontargetcontent of node8COMMENT_NODEcomment#commentcomment text9DOCUMENT_NODEdocument#documentnull10DOCUMENT_TYPE_NODEdocumenttypedoctype namenull11DOCUMENT_FRAGMENT_NODEdocumentfragment#document fragmentnull12NOTATION_NODEnotationnotation namenull　　W3C规定的属性： PropertyDescriptionattributesReturns a NamedNodeMap containing all attributes for this nodechildNodesReturns a NodeList containing all the child nodes for this nodefirstChildReturns the first child node for this nodelastChildReturns the last child node for this noSat, 29 Sep 2007 10:15:08 GMThttp://www.ffasp.com/content.asp?newsid=下载：http://www.hlib.cn/down/down.asp?downid=358XMLDOM是用来访问和操作XML文档的编程接口规范。 　　1、简介　　XMLDOM被设计为可用于任何语言和任何操作系统。借助DOM，程序员可以创建XML文档、遍历其结构，增、改、删其元素。DOM将整个XML文档视作一棵树，文档级的元素是树的根。　　2、MS的XML解析，IE5.0以上。　　是一个COM组件，至少包含下列对象：　　（1）Micosoft.XMLDOM　　（2）Micosoft.XMLDOM.parseError，有如下属性：PropertyDescriptionerrorCodeReturns a long integer error codereasonReturns a string explaining the reason for the errorlineReturns a long integer representing the line number for the errorlinePosReturns a long integer representing the line position for the errorsrcTextReturns a string containing the line that caused the errorurlReturns the url pointing the loaded documentfilePosReturns a long integer file position of the error　　（3）Microsoft.XMLHTTP，有如下属性：PropertyDescriptionreadyStateReturns the state of the documentresponseBodyReturns the response as an array of unsigned bytesresponseStreamReturns the response as an IStreamresponseTextReturns the response as a stringresponseXMLReturns the response as an xml documentstatusReturns the status code as a numberstatusTextReturns the status as a string有如下方法：PropertyDescriptionabort()Cancel the current http requestgetAllResponseHeaders()Returns the value of the http headersgetResponseHeader(headerName)Returns the value of one specified http headeropen(method, url, async, userid, password)Opens http request, and specifies the informationsend()Send the http request to the serversetRequestHeader(headerName,headerValue)Specifies the name of a http header　　（4）Node的类型nodeTypeNamed ConstantnodeTypeStringnodeNamenodeValue1ELEMENT_NODEelementtagNamenull2ATTRIBUTE_NODEattributenamevalue3TEXT_NODEtext#textcontent of node4CDATA_SECTION_NODEcdatasection#cdata-sectioncontent of node5ENTITY_REFERENCE_NODEentityreferenceentity reference namenull6ENTITY_NODEentityentity namenull7PROCESSING_INSTRUCTION_NODEprocessinginstructiontargetcontent of node8COMMENT_NODEcomment#commentcomment text9DOCUMENT_NODEdocument#documentnull10DOCUMENT_TYPE_NODEdocumenttypedoctype namenull11DOCUMENT_FRAGMENT_NODEdocumentfragment#document fragmentnull12NOTATION_NODEnotationnotation namenull　　W3C规定的属性： PropertyDescriptionattributesReturns a NamedNodeMap containing all attributes for this nodechildNodesReturns a NodeList containing all the child nodes for this nodefirstChildReturns the first child node for this nodelastChildReturns the last child node for this no