• java利用dom4j对输入的任意对象生成xml文件


    最近业务需求要求对集合和pojo对象进行生成xml文件,和对xml的解析,解析xml我以前写过,对于生成还是比较陌生的,近两天自己写了个 ,在真正的使用的时候你必须重载已满足业务需要。下面就是本人最近写的,拿出来分享。

    pojo对象文件

    package pojo;

    import java.io.Serializable;
    import java.util.Date;

    public class User implements Serializable {

     private String name ;
        private String password;
        private String realName;
        private Integer sex;
        private Integer age;
        private Date birthday;
        private String phone;
     public String getName() {
      return name;
     }
     public void setName(String name) {
      this.name = name;
     }
     public String getPassword() {
      return password;
     }
     public void setPassword(String password) {
      this.password = password;
     }
     public String getRealName() {
      return realName;
     }
     public void setRealName(String realName) {
      this.realName = realName;
     }
     public Integer getSex() {
      return sex;
     }
     public void setSex(Integer sex) {
      this.sex = sex;
     }
     public Integer getAge() {
      return age;
     }
     public void setAge(Integer age) {
      this.age = age;
     }
     public Date getBirthday() {
      return birthday;
     }
     public void setBirthday(Date birthday) {
      this.birthday = birthday;
     }
     public String getPhone() {
      return phone;
     }
     public void setPhone(String phone) {
      this.phone = phone;
     }
       
       
    }

    生成主文件

    package javaReflect;

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

    import org.dom4j.Document;
    import org.dom4j.DocumentHelper;
    import org.dom4j.Element;
    import org.dom4j.io.OutputFormat;
    import org.dom4j.io.XMLWriter;

    import pojo.User;
    /**
     *
     *@date Dec 24, 20097:09:05 PM
     *@author zhangjp
     *@param
     */
    public class ReflectTest1 {
     
     public ReflectTest1(){
      getClassXML(getObjectData());
     }

      /**
       * 获得list数据
       * @returnReflectTest1.java
       */
     public  List<User> getData(){
      List <User> list = new ArrayList<User>();
         User u1 = new User();
         u1.setName("zhangsan");
         u1.setPassword("123456");
         u1.setRealName("zhangjip");
         u1.setSex(1);
         u1.setAge(22);
         u1.setBirthday(new Date());
         u1.setPhone("123455555555");
        
         User u2 = new User();
         u2.setName("wangwu");
         u2.setPassword("5555");
         u2.setRealName("zhangjip");
         u2.setSex(1);
         u2.setAge(30);
         u2.setBirthday(new Date());
         u2.setPhone("12345588888");
         list.add(u1);
         list.add(u2);
      return list;
     }
     /**
      * 获得object数据
      * @returnReflectTest1.java
      */
     public Object getObjectData(){
        User u1 = new User();
         u1.setName("zhangsan");
         u1.setPassword("123456");
         u1.setRealName("zhangjip");
         u1.setSex(1);
         u1.setAge(22);
         u1.setBirthday(new Date());
         u1.setPhone("123455555555");
         return u1;
     }
     /**
      * object生成
      * @param objReflectTest1.java
      */
     public void getClassXML(Object obj){
      try {
       if (obj == null) {
        return;
       }
       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);
                          MyOutputFormat.createCompactFormat();
         // 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());
         
        }
        
       writeDocument(document.asXML(),new File("D:\MyXNL"));
      } 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();
      }
      
      
     }
     

        /**
         * list生成
         * @param listReflectTest1.java
         */
     public void getClassXML(List<?> list){
      try {
       if (list == null || list.size() == 0) {
        return;
       }
       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);
         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());
         
        }
        
        
       }
       writeDocument(document.asXML(),new File("D:\MyXNL"));
      } 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();
      }
      
      
     }
     
     
     /**
      * 写xml文件
      * @param str
      * @param file
      * @throws ExceptionReflectTest1.java
      */
     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();  
         }
     }
     
     public static void main(String[] args){
      new ReflectTest1();
     }

    }

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  • 原文地址:https://www.cnblogs.com/alaricblog/p/3278349.html
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