例子二：通過Xalan 1.2，使用XSLT轉(zhuǎn)換XML 做為第二個例子，我們使用了Xalan-java的XSLT引擎，這個引擎來自于APACHE的XML項目，使用這個程序，我們能夠使用XSL轉(zhuǎn)換XML源文件。這將極大的方便我們處理文檔和進(jìn)行內(nèi)容管理。 開始之前，我們需要將xerces.jar 和 xalan.jar文件放入java.class.path目錄下（這兩個文件包含在Xalan-Java 1.2 中，可以從xml.apache.org處下載）。 PHP程序如下： 函數(shù)xslt_transform()以XML和XSL文件為參數(shù)，形式可為文件名（如:foo.xml）或URL（如：http://localhost/foo.xml）。 <?php function xslt_transform($xml,$xsl) { ;;// Create a XSLTProcessorFactory object. XSLTProcessorfactory is a Java ;;// class which manufactures the processor for performing transformations. ;;$XSLTProcessorFactory = new java("org.apache.xalan.xslt.XSLTProcessorFactory"); ;;// Use the XSLTProcessorFactory method getProcessor() to create a ;;// new XSLTProcessor object. ;;$XSLTProcessor = $XSLTProcessorFactory->getProcessor(); ;;// Use XSLTInputSource objects to provide input to the XSLTProcessor ;;// process() method for transformation. Create objects for both the ;;// xml source as well as the XSL input source. Parameter of ;;// XSLTInputSource is (in this case) a 'system identifier' (URI) which ;;// can be an URL or filename. If the system identifier is an URL, it ;;// must be fully resolved. ;;$xmlID = new java("org.apache.xalan.xslt.XSLTInputSource", $xml); ;;$stylesheetID = new java("org.apache.xalan.xslt.XSLTInputSource", $xsl); ;;// Create a stringWriter object for the output. ;;$stringWriter = new java("java.io.StringWriter"); ;;// Create a ResultTarget object for the output with the XSLTResultTarget ;;// class. Parameter of XSLTResultTarget is (in this case) a 'character ;;// stream', which is the stringWriter object.;;;;$resultTarget = new java("org.apache.xalan.xslt.XSLTResultTarget", $stringWriter); ;;// Process input with the XSLTProcessors' method process(). This ;;// method uses the XSL stylesheet to transform the XML input, placing ;;// the result in the result target. ;;$XSLTProcessor->process($xmlID,$stylesheetID,$resultTarget); ;;// Use the stringWriters' method toString() to ;;// return the buffer's current value as a string to get the ;;// transformed result. ;;$result = $stringWriter->toString(); ;;$stringWriter->close(); ;;return($result); } ?> 函數(shù)定義好后，我們就可以調(diào)用它了，在下面的例程中，變量$xml指向一個URL字符串，$xsl也是如此。這個例子將顯示5個最新的phpbuilder.com文章標(biāo)題。 <?php $xml = "http://www.phpbuilder.com/rss_feed.php?type=articles&limit=5"$xsl = "http://www.soeterbroek.com/code/xml/rss_html.xsl"$out = xslt_transform($xml,$xsl); echo $out; ?> 如果你在本地機(jī)上運(yùn)行程序，必須確保你的函數(shù)參數(shù)指向正確的文件名。 <?php $xml;;= "/web/htdocs/xml_java/rss_feed.xml"$xsl;;= "/web/htdocs/xml_java/rss_html.xsl"$out = xslt_transform($xml,$xsl); echo $out; ?> 雖然這種效果我們可以通過其它方法實現(xiàn)，或許那些方法更好，但這個例子能讓你對PHP調(diào)用JAVA類有一個更好的了解。 教程結(jié)束了，希望你能夠從這篇教程中學(xué)到點東西，以下是一些你用得到的鏈接： http://www.php4win.de ~ A great Win32 distribution of PHP http://www.javasoft.com ~ Sun's Java release http://www.jars.com ~ Start searching for handy Java classes http://www.gamelan.com ~ More Java classes http://www.technetcast.com/tnc_play_stream.html?stream_id=400 ~ Sam Ruby about PHP and Java integration at Open Source Convention 2000 (audio) http://xml.apache.org ~ Apache XML Project http://www.phpbuilder.com/columns/justin20001025.php3 ~ Transforming XML with XSL using Sablotron