使用 java 从生成的 xml 文档中删除 xml 声明
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remove xml declaration from the generated xml document using java
提问by flash
String root = "RdbTunnels";
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
Document document = documentBuilder.newDocument();
Element rootElement = document.createElement(root);
document.appendChild(rootElement);
OutputFormat format = new OutputFormat(document);
format.setIndenting(true);
XMLSerializer serializer = new XMLSerializer(System.out, format);
serializer.serialize(document);
gives the result as following
结果如下
<?xml version="1.0" encoding="UTF-8"?>
<RdbTunnels/>
but I need to remove the xml declaration from the output how can I do that
但我需要从输出中删除 xml 声明我该怎么做
采纳答案by Brian Agnew
Have you seen OutputKeysas used by Transformer? Specifically OMIT_XML_DECLARATION.
您是否见过Transformer使用的OutputKeys？特别是OMIT_XML_DECLARATION。
Note that removing the header is valid in XML 1.0, but you lose character encoding data (amongst other things) which can be very important.
请注意，删除标头在 XML 1.0 中是有效的，但是您会丢失非常重要的字符编码数据（除其他外）。
回答by Peter Lindqvist
Add this
添加这个
format.setOmitXMLDeclaration(true);
Example
例子
OutputFormat format = new OutputFormat(document);
format.setIndenting(true);
format.setOmitXMLDeclaration(true);
回答by Remy Mellet
By using the setOmitXMLDeclaration(true); method from the Format class. I'm not sure but I think it uses jDom lib.
通过使用 setOmitXMLDeclaration(true); Format 类中的方法。我不确定，但我认为它使用 jDom 库。
Example (it will display the XML file without the XML declaration of the Document document)
示例（它将显示没有文档文档的 XML 声明的 XML 文件）
XMLOutputter out= new XMLOutputter(Format.getCompactFormat().setOmitDeclaration(true));
out.output(document, System.out);
