java自带的xml解析工具类

 public class JaxbUtil {

     /**
      * java对象转换为xml文件
      *
      * @param xmlPath xml文件路径
      * @param load    java对象.Class
      * @return xml文件的String
      * @throws JAXBException
      */
     public static String beanToXml(Object obj, Class<?> load) throws JAXBException {
         JAXBContext context = JAXBContext.newInstance(load);
         Marshaller marshaller = context.createMarshaller();
         marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, false);
         StringWriter writer = new StringWriter();
         marshaller.marshal(obj, writer);
         return writer.toString();
     }

     /**
      * xml文件配置转换为对象
      *
      * @param xmlPath xml文件路径
      * @param load    java对象.Class
      * @return java对象
      * @throws JAXBException
      * @throws IOException
      */
     @SuppressWarnings("unchecked")
     public static <T> T xmlToBean(String xmlPath, Class<T> load) throws JAXBException, IOException {
         JAXBContext context = JAXBContext.newInstance(load);
         Unmarshaller unmarshaller = context.createUnmarshaller();
         return (T) unmarshaller.unmarshal(new StringReader(xmlPath));
     }

     /**
      * JavaBean转换成xml 默认编码UTF-8
      *
      * @param obj
      * @param writer
      * @return
      */
     public static String convertToXml(Object obj) {
         return convertToXml(obj, "UTF-8");
     }

     /**
      * JavaBean转换成xml
      *
      * @param obj
      * @param encoding
      * @return
      */
     public static String convertToXml(Object obj, String encoding) {
         String result = null;
         try {
             JAXBContext context = JAXBContext.newInstance(obj.getClass());
             Marshaller marshaller = context.createMarshaller();
             marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
             marshaller.setProperty(Marshaller.JAXB_ENCODING, encoding);
             //去掉生成xml的默认报文头
              marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
             StringWriter writer = new StringWriter();
             writer.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + "\n    ");
             marshaller.marshal(obj, writer);
             result = writer.toString();
         } catch (Exception e) {
             e.printStackTrace();
         }
         return result;
     }

     /**
      * JavaBean转换成xml去除xml声明部分
      *
      * @param obj
      * @param encoding
      * @return
      */
     public static String convertToXmlIgnoreXmlHead(Object obj, String encoding) {
         String result = null;
         try {
             JAXBContext context = JAXBContext.newInstance(obj.getClass());
             Marshaller marshaller = context.createMarshaller();
             marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
             marshaller.setProperty(Marshaller.JAXB_ENCODING, encoding);
             marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
             StringWriter writer = new StringWriter();
             marshaller.marshal(obj, writer);
             result = writer.toString();
         } catch (Exception e) {
             e.printStackTrace();
         }
         return result;
     }

     /**
      * xml转换成JavaBean
      *
      * @param xml
      * @param c
      * @return
      */
     @SuppressWarnings("unchecked")
     public static <T> T converyToJavaBean(String xml, Class<T> c) {
         T t = null;
         try {
             JAXBContext context = JAXBContext.newInstance(c);
             Unmarshaller unmarshaller = context.createUnmarshaller();
             t = (T) unmarshaller.unmarshal(new StringReader(xml));
         } catch (Exception e) {
             e.printStackTrace();
         }
         return t;
     }

     private static OutputFormat createPrettyPrint() {
         OutputFormat format = new OutputFormat();
         //format.setIndentSize(2);
         format.setNewLineAfterDeclaration(false);
         format.setNewlines(true);
         format.setTrimText(false);
         format.setPadText(false);
         return format;
     }

     /**
      *
      * @Title: formatXml
      * @author：humingbo
      * @date：2019年7月18日上午11:35:08
      * @Description: 格式化xml方法
      * @param str
      * @return
      * @throws Exception
      */
     public static String formatXml(String str) throws Exception {
         Document document = null;
         document = DocumentHelper.parseText(str);
         // 格式化输出格式
         OutputFormat format = createPrettyPrint();
         format.setEncoding("UTF-8");
         StringWriter writer = new StringWriter();
         // 格式化输出流
         XMLWriter xmlWriter = new XMLWriter(writer, format);
         // 将document写入到输出流
         xmlWriter.write(document);
         xmlWriter.close();
         return writer.toString();
     }
 }