对象生成xml

你肯定想过，给你一个对象就生成对应的xml格式文件，这里就是一个。

CreateXMLUtils

package common;

import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.Node;
import org.dom4j.Text;

/**
* 生成XML的工具类
*@date Dec 23, 200910:04:38 AM
*@author zhangjp
*@param
*/
public class CreateXMLUtil {

/**
* 对普通的list进行生成XML
* @param list
* @param UID 是否把serialVersionUID也些在XML中
* @returnCreateXMLUtil.java
*/
public static String getClassXML(List<?> list,boolean UID){
  try {
   if (list == null || list.size() == 0) {
    return null;
   }
   Document document = DocumentHelper.createDocument();
   Element root = document.addElement("kedou");
   for (int i = 0; i < list.size(); i++) {
    String className = list.get(i).getClass().getName();
    String name = className.substring(className.lastIndexOf('.')+1);
    Element element = root.addElement(name);
       Field[] fields = list.get(i).getClass().getDeclaredFields();

    for (int j = 0; j < fields.length; j++) {
     fields[j].setAccessible(true);
     if(fields[j].get(list.get(i))==null){
      continue;
     }
     String objValue = fields[j].get(list.get(i)).toString();
     String fieldName = fields[j].toString().substring(fields[j].toString().lastIndexOf('.')+1);

     if("serialVersionUID".equals(fieldName)){
      if(UID==false){
       continue;
      }
     }

     element.addAttribute(fieldName,objValue);

     // HttpServletResponse response =
     // ServletActionContext.getResponse();
     // PrintWriter out = response.getWriter();
     // response.setContentType("text/xml;charset=utf-8");
     // response.setHeader("Cache-Control", "no-cache");
     // out.print(document.asXML());

    }

   return document.asXML();
  } catch (SecurityException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IllegalArgumentException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IllegalAccessException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

  return null;
}

/**
* 对一般的pojo进行生成相对应得xml
* @param obj
* @param rootName 根节点名称
* @param UID 是否把serialVersionUID也写在XML中
* @returnCreateXMLUtil.java
*/
public static String getClassXML(Object obj,String rootName,boolean UID){
  try {
   if (obj == null) {
    return null;
   }
   Document document = DocumentHelper.createDocument();
   Element root = document.addElement(rootName);
    String className = obj.getClass().getName();
    String name = className.substring(className.lastIndexOf('.')+1);
    Element element = root.addElement(name);
       Field[] fields = obj.getClass().getDeclaredFields();

    for (int j = 0; j < fields.length; j++) {
     fields[j].setAccessible(true);
     if(fields[j].get(obj)==null){
      continue;
     }
     String objValue = fields[j].get(obj).toString();
     String fieldName = fields[j].toString().substring(fields[j].toString().lastIndexOf('.')+1);
     if("serialVersionUID".equals(fieldName)){
      if(UID==false){
       continue;
      }
     }
     Element ele = element.addElement(fieldName);
     ele.addText(objValue);
     // HttpServletResponse response =
     // ServletActionContext.getResponse();
     // PrintWriter out = response.getWriter();
     // response.setContentType("text/xml;charset=utf-8");
     // response.setHeader("Cache-Control", "no-cache");
     // out.print(document.asXML());

    }

   return document.asXML();
  } catch (SecurityException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IllegalArgumentException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IllegalAccessException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

  return null;
}
public static String getClassXML(Object obj){
  try {
   if (obj == null) {
    return null;
   }
   Document document = DocumentHelper.createDocument();
   Element root = document.addElement("kedou");
    String className = obj.getClass().getName();
    String name = className.substring(className.lastIndexOf('.')+1);
    Element element = root.addElement(name);
       Field[] fields = obj.getClass().getDeclaredFields();

    for (int j = 0; j < fields.length; j++) {
     fields[j].setAccessible(true);
     if(fields[j].get(obj)==null){
      continue;
     }
     String objValue = fields[j].get(obj).toString();
     String fieldName = fields[j].toString().substring(fields[j].toString().lastIndexOf('.')+1);
     element.addAttribute(fieldName,objValue);

     // HttpServletResponse response =
     // ServletActionContext.getResponse();
     // PrintWriter out = response.getWriter();
     // response.setContentType("text/xml;charset=utf-8");
     // response.setHeader("Cache-Control", "no-cache");
     // out.print(document.asXML());

    }

   return document.asXML();
  } catch (SecurityException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IllegalArgumentException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IllegalAccessException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

  return null;
}

/**
*
*
   @author： zhangjp
   @功能：把一个简单和合一个list对象生成的xml合并成一个xml
   @公用: yes
   @date： Feb 14, 2010
*/
public static String getClassXML(Object object,String objRootName ,List list,String listRootName){
  try {
   Document document = DocumentHelper.createDocument();
   Element root = document.addElement("root");
   Element objectNode = CreateXMLUtil.getClassXMLDocument(object, objRootName,false);
   Element listNode = CreateXMLUtil.getClassXMLDocument(list, listRootName);
   root.add(objectNode);
   root.add(listNode);
   return document.asXML();
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  return null;
}

/**
*
   @author： zhangjp
   @功能：获得object对象的根元素
   @公用:是
   @date： Feb 14, 2010
*/
public static Element getClassXMLDocument(Object obj,String rootName,boolean UID){
  try {
   if (obj == null) {
    return null;
   }
   Document document = DocumentHelper.createDocument();
   Element root = document.addElement(rootName);
    String className = obj.getClass().getName();
    String name = className.substring(className.lastIndexOf('.')+1);
    Element element = root.addElement(name);
       Field[] fields = obj.getClass().getDeclaredFields();

    for (int j = 0; j < fields.length; j++) {
     fields[j].setAccessible(true);
     if(fields[j].get(obj)==null){
      continue;
     }
     String objValue = fields[j].get(obj).toString();
     String fieldName = fields[j].toString().substring(fields[j].toString().lastIndexOf('.')+1);
     if("serialVersionUID".equals(fieldName)){
      if(UID==false){
       continue;
      }
     }
     Element ele = element.addElement(fieldName);
     ele.addText(objValue);

public void writeDocument(String str,File file) throws Exception{
   try {
      /* StringWriter writer = new StringWriter();
       OutputFormat format = OutputFormat.createPrettyPrint();
       format.setEncoding("utf-8");
       XMLWriter xmlwriter = new XMLWriter(writer, format);
       xmlwriter.write(str);
       String outString = writer.toString();   */

     OutputStream os = new FileOutputStream(file);
     PrintWriter out = new PrintWriter(new OutputStreamWriter(os,"utf-8"));
     System.out.println(str);
     out.print(str);
     out.flush();
   } catch (Exception ex) {
         ex.printStackTrace();
     }
}

/**
*
   @author： zhangjp
   @功能：test
   @公用:
   @date： Feb 14, 2010
*/
public static void main(String[] args) {

   /***
    * test here
    */
}
}