生成xml

第一个是原创的，在读取模板xml文件，然后添加内容
第二个是转载的，直接创建xml文件,引用http://blog.csdn.net/hzc543806053/article/details/7310418/

package TestPMD;import java.io.File;import java.io.FileOutputStream;import java.io.OutputStreamWriter;import org.dom4j.Document;import org.dom4j.DocumentException;import org.dom4j.DocumentHelper;import org.dom4j.Element;import org.dom4j.io.OutputFormat;import org.dom4j.io.SAXReader;import org.dom4j.io.XMLWriter;public class addxml {public static void main(String[] args) throws DocumentException {SAXReader reader = new SAXReader();      Document document = reader.read(new File("e:\\cppdemo.xml"));     Element root = document.getRootElement();     Element elementRule=creatXml("12","12","12","//WhileStatement[not(Statement/Block)]","class Example {void bar() {while (baz)buz.doSomething();}");    root.add(elementRule);    Element elementRule2=creatXml("12","12","12","//ClassOrInterfaceDeclaration[not (matches(@Image,'^([A-Z][a-z|0-9]+)+$'))]","class Example {void bar() {while (baz)buz.doSomething();}");    root.add(elementRule2);    try {writerDocumentToNewFile(document);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}public static Element creatXml(String name,String message,String description,String value,String example){Element elementRule = DocumentHelper.createElement("rule");elementRule.addAttribute("name", name);  elementRule.addAttribute("language", "java"); elementRule.addAttribute("message", message); elementRule.addAttribute("class", "net.sourceforge.pmd.lang.rule.XPathRule"); elementRule.addElement("description").addText(description); Element elementPros=elementRule.addElement("properties");  Element elementPro=elementPros.addElement("property").addAttribute("name", "xpath"); elementPro.addElement("value").addCDATA(value); elementRule.addElement("priority").addText("3");elementRule.addElement("example").addCDATA(example);return elementRule;}public static void writerDocumentToNewFile(Document document)throws Exception{          //输出格式          OutputFormat format = OutputFormat.createPrettyPrint();          //设置编码          format.setEncoding("UTF-8");          //XMLWriter 指定输出文件以及格式          XMLWriter writer = new XMLWriter(new OutputStreamWriter(new FileOutputStream(new File("e:\\demo1.xml")),"UTF-8"), format);                    //写入新文件          writer.write(document);          writer.flush();          writer.close();      }  }

package dds;import java.io.FileOutputStream;  import org.dom4j.Document;  import org.dom4j.DocumentHelper;  import org.dom4j.Element;  import org.dom4j.io.OutputFormat;  import org.dom4j.io.XMLWriter;    /**  * 用DOM4J创建xml文档  *   *  */    public class test {        public static void main(String[] args) throws Exception {                    //1.第一种 创建文档及设置根元素节点的方式                    //创建文档的根节点  //      Document document = DocumentHelper.createDocument();  //      //创建文档的 根元素节点  //      Element root = DocumentHelper.createElement("Person");  //        document.setRootElement(root);                    //2.第二种 创建文档及设置根元素节点的方式          Element root = DocumentHelper.createElement("Person");          Document document = DocumentHelper.createDocument(root);          //给根节点添加属性          root.addAttribute("学校", "南大").addAttribute("位置", "江西");                    //给根节点添加孩子节点          Element element1 = root.addElement("学生");          element1.addElement("姓名").addAttribute("婚姻", "单身").addText("小章");          element1.addElement("年龄").addText("21");                    Element element2 = root.addElement("学生");          element2.addElement("姓名").addAttribute("婚姻", "单身").addText("小红").addElement("爱好").addText("唱歌");          element2.addElement("年龄").addText("22");                                      //把生成的xml文档存放在硬盘上  true代表是否换行          OutputFormat format = new OutputFormat("    ",true);          format.setEncoding("GBK");//设置编码格式          XMLWriter xmlWriter = new XMLWriter(new FileOutputStream("Person.xml"),format);                xmlWriter.write(document);          xmlWriter.close();      }    }