JAVA 对象 & byte数组之间转化

深碍√TFBOYSˉ_ 2022-05-24 05:46 252阅读 0赞

对象 & byte数组之间转化工具类

效果图：objectToByteArray: [B@7d4991ad
    byteArrayToObject: WXOrderMsgEntity(uuid=null, orderSeq=W2018052100000002, carportSeq=1001, stakeSeq=102) {"carportSeq":1001,"orderSeq":"W2018052100000002","stakeSeq":102}

package com.extracme.echarge;
    
    import java.io.ByteArrayInputStream;
    import java.io.ByteArrayOutputStream;
    import java.io.IOException;
    import java.io.ObjectInputStream;
    import java.io.ObjectOutputStream;
    
    import com.alibaba.fastjson.JSON;
    import com.aliyun.openservices.ons.api.Message;
    import com.extracme.evready.charge.define.WXOrderMsgEntity;
    
    public class TestHalp {
    
    	public static void main(String[] args) {
    		WXOrderMsgEntity msg=new WXOrderMsgEntity();
    		msg.setCarportSeq(1001);
    		msg.setOrderSeq("W2018052100000002");
    		msg.setStakeSeq(102);
    		
    		byte[] objectToByteArray = objectToByteArray(msg);
            System.err.println("objectToByteArray: " + objectToByteArray);
            
    		Message message=new Message();
    		message.setBody(objectToByteArray);
    		
    		Object byteArrayToObject = byteArrayToObject(message.getBody());
    		System.err.println("byteArrayToObject: " + byteArrayToObject.toString());
    		WXOrderMsgEntity d=(WXOrderMsgEntity)byteArrayToObject;
    		System.out.println(JSON.toJSONString(d));
    	}
    
    	    /**
    	     * 对象转Byte数组
    	     * @param obj
    	     * @return
    	     */
    	    public static byte[] objectToByteArray(Object obj) {
    	        byte[] bytes = null;
    	        ByteArrayOutputStream byteArrayOutputStream = null;
    	        ObjectOutputStream objectOutputStream = null;
    	        try {
    	            byteArrayOutputStream = new ByteArrayOutputStream();
    	            objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);
    	            objectOutputStream.writeObject(obj);
    	            objectOutputStream.flush();
    	            bytes = byteArrayOutputStream.toByteArray();
    
    	        } catch (IOException e) {
    	            System.err.println("objectToByteArray failed, " + e);
    	        } finally {
    	            if (objectOutputStream != null) {
    	                try {
    	                    objectOutputStream.close();
    	                } catch (IOException e) {
    	                    System.err.println("close objectOutputStream failed, " + e);
    	                }
    	            }
    	            if (byteArrayOutputStream != null) {
    	                try {
    	                    byteArrayOutputStream.close();
    	                } catch (IOException e) {
    	                    System.err.println("close byteArrayOutputStream failed, " + e);
    	                }
    	            }
    
    	        }
    	        return bytes;
    	    }
    
    	    /**
    	     * Byte数组转对象
    	     * @param bytes
    	     * @return
    	     */
    	    public static Object byteArrayToObject(byte[] bytes) {
    	        Object obj = null;
    	        ByteArrayInputStream byteArrayInputStream = null;
    	        ObjectInputStream objectInputStream = null;
    	        try {
    	            byteArrayInputStream = new ByteArrayInputStream(bytes);
    	            objectInputStream = new ObjectInputStream(byteArrayInputStream);
    	            obj = objectInputStream.readObject();
    	        } catch (Exception e) {
    	            System.err.println("byteArrayToObject failed, " + e);
    	        } finally {
    	            if (byteArrayInputStream != null) {
    	                try {
    	                    byteArrayInputStream.close();
    	                } catch (IOException e) {
    	                    System.err.println("close byteArrayInputStream failed, " + e);
    	                }
    	            }
    	            if (objectInputStream != null) {
    	                try {
    	                    objectInputStream.close();
    	                } catch (IOException e) {
    	                    System.err.println("close objectInputStream failed, " + e);
    	                }
    	            }
    	        }
    	        return obj;
    	    }
    }