将样式表添加到XML文档中(Adding Stylesheet into XML document)

我想使用JAVA动态地将样式表添加到XML文档中，但是我得到了一个例外。我的代码片段如下所示：

final String xmlStr = "My XML tags in form of String here"; Document doc = convertStringToDocument(xmlStr); String documen = addStylesheet( doc); System.out.println(documen); public static String addStylesheet(Document document) { ProcessingInstruction pi = (ProcessingInstruction) document.createProcessingInstruction("xml-stylesheet", "type=\"text/xsl\" href=\"my.stylesheet.xsl\""); document.appendChild((Node) pi); return document.toString(); }

抛出的异常是：

Exception in thread "main" java.lang.ClassCastException: com.sun.org.apache.xerces.internal.dom.ProcessingInstructionImpl cannot be cast to javax.xml.stream.events.ProcessingInstruction at StringToDocumentToString.insertStylesheet(StringToDocumentToString.java:70) at StringToDocumentToString.main(StringToDocumentToString.java:27)

请指导我做错了什么。谢谢

I want to add style sheet into XML document dynamically using JAVA, However i am getting an exception. My code snippet looks like:

final String xmlStr = "My XML tags in form of String here"; Document doc = convertStringToDocument(xmlStr); String documen = addStylesheet( doc); System.out.println(documen); public static String addStylesheet(Document document) { ProcessingInstruction pi = (ProcessingInstruction) document.createProcessingInstruction("xml-stylesheet", "type=\"text/xsl\" href=\"my.stylesheet.xsl\""); document.appendChild((Node) pi); return document.toString(); }

Exception thrown is:

Exception in thread "main" java.lang.ClassCastException: com.sun.org.apache.xerces.internal.dom.ProcessingInstructionImpl cannot be cast to javax.xml.stream.events.ProcessingInstruction at StringToDocumentToString.insertStylesheet(StringToDocumentToString.java:70) at StringToDocumentToString.main(StringToDocumentToString.java:27)

Please guide me what I am doing wrong. thanks