JAVA序列化和反序列化XML

港控/mmm° 2022-08-24 00:49 219阅读 0赞

package com.lss.utils;
    
    import java.beans.XMLDecoder;
    import java.beans.XMLEncoder;
    import java.io.BufferedInputStream;
    import java.io.BufferedOutputStream;
    import java.io.ByteArrayInputStream;
    import java.io.ByteArrayOutputStream;
    
    /**
     * JAVA序列化和反序列化XML
     * <p>
     * 属性是包含getter,setter属性生成， 序列化的类必须包含一个公共无参构造函数。
     * </p>
     * 
     * @author kevin LUAN
     * 
     */
    public class SerializableXmlUtils {
    	@SuppressWarnings("unchecked")
    	public static <T> T parserXML(String xml) {
    		ByteArrayInputStream in = new ByteArrayInputStream(xml.getBytes());
    		XMLDecoder decoder = new XMLDecoder(new BufferedInputStream(in));
    		decoder.close();
    		return (T) decoder.readObject();
    	}
    
    	public static <T> String formatXML(T entity) {
    		ByteArrayOutputStream out = new ByteArrayOutputStream();
    		XMLEncoder encoder = new XMLEncoder(new BufferedOutputStream(out));
    		encoder.writeObject(entity);
    		encoder.close();
    		return out.toString();
    	}
    
    	public static void main(String[] args) throws Exception {
    		User user = new User();
    		user.setId(1);
    		user.setName("张三丰");
    		user.setAihao(new String[] { "篮球", "足球" });
    		user.setStudent(new Student(1, "二年级"));
    		String xml = formatXML(user);
    		System.out.println("序列化到XML:\n" + xml);
    		user = parserXML(xml);
    		System.out.println("反序列化Bean:\n" + user);
    	}
    }

\# 测试Bean Code

package com.lss.utils;
    
    import java.util.Arrays;
    
    public class User {
    	private int id;
    	private String name;
    	private Student student;
    	private String aihao[];
    
    	@Override
    	public String toString() {
    		return "{id:" + id + ",name:" + name + ",student:" + student + ",aihao:" + Arrays.toString(aihao) + "}";
    	}
    
    	public Student getStudent() {
    		return student;
    	}
    
    	public void setStudent(Student student) {
    		this.student = student;
    	}
    
    	public int getId() {
    		return id;
    	}
    
    	public void setId(int id) {
    		this.id = id;
    	}
    
    	public String getName() {
    		return name;
    	}
    
    	public void setName(String name) {
    		this.name = name;
    	}
    
    	public String[] getAihao() {
    		return aihao;
    	}
    
    	public void setAihao(String[] aihao) {
    		this.aihao = aihao;
    	}
    
    }

package com.lss.utils;
    
    public class Student {
    	private int classId;
    	private String level;
    
    	public Student() {
    	}
    
    	public Student(int classId, String level) {
    		this.classId = classId;
    		this.level = level;
    	}
    
    	public int getClassId() {
    		return classId;
    	}
    
    	public void setClassId(int classId) {
    		this.classId = classId;
    	}
    
    	public String getLevel() {
    		return level;
    	}
    
    	public void setLevel(String level) {
    		this.level = level;
    	}
    
    	@Override
    	public String toString() {
    		return "{classId:" + classId + ",level:" + level + "}";
    	}
    }

\#运行测试结果：

序列化到XML:

<?xml version="1.0" encoding="UTF-8"?>
    <java version="1.7.0_45" class="java.beans.XMLDecoder">
     <object class="com.koudai.laohuji.service.User">
      <void property="aihao">
       <array class="java.lang.String" length="2">
        <void index="0">
         <string>篮球</string>
        </void>
        <void index="1">
         <string>足球</string>
        </void>
       </array>
      </void>
      <void property="id">
       <int>1</int>
      </void>
      <void property="name">
       <string>张三丰</string>
      </void>
      <void property="student">
       <object class="com.koudai.laohuji.service.Student">
        <void property="classId">
         <int>1</int>
        </void>
        <void property="level">
         <string>二年级</string>
        </void>
       </object>
      </void>
     </object>
    </java>

反序列化Bean:

\{id:1,name:张三丰,student:\{classId:1,level:二年级\},aihao:\[篮球, 足球\]\}