实体对象拷贝代码,Java代码库,德仔网

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【Java】实体对象拷贝

作者:刘远程 / 发布于2013/7/19/ 599

两个实体可以是不同类型，但只会拷贝同名且提供set及get方法的部分


	package com.goofus.tool.shove.util;

	import java.lang.reflect.InvocationTargetException;
	import java.lang.reflect.Method;

	import com.goofus.tool.shove.entry.Message;

	public class BeanUtil {
	
	private static String skipMethod = "wait#hashCode#getClass#equals#toString#notify#notifyAll";
	
	/**
	 * 实体拷贝，根据get及set方法
	 * @author goofus/yinly
	 * Jul 18, 2013
	 * @param src
	 * @param dest
	 */
	@SuppressWarnings("unchecked")
	public final static void copy(Object src, Object dest) {
	 Class srcClazz = src.getClass();
	 Class destClazz = dest.getClass();
	 Method[] sMethods = srcClazz.getMethods();
	 Method[] dMethods = destClazz.getMethods();
	 for(int i=0,ilen=sMethods.length; i<ilen; i++) {
	 Method method = sMethods[i];
	 String mn = method.getName();
	
	 if(BeanUtil.skipMethod.indexOf(mn) == -1) {
	 if(mn.startsWith("get")) {
	 try {
	 mn = mn.replaceFirst("get", "set");
	 for(int j=0,jlen=dMethods.length; j<jlen; j++) {
	 Method dMethod = dMethods[j];
	 if(dMethod.getName().equalsIgnoreCase(mn)) {
	 dMethod.invoke(dest, method.invoke(src));
	 }
	 }
	 } catch (IllegalArgumentException e) {
	 e.printStackTrace();
	 } catch (IllegalAccessException e) {
	 e.printStackTrace();
	 } catch (InvocationTargetException e) {
	 e.printStackTrace();
	 }
	 }
	 }
	 }
	}

	/**
	 * @author goofus/yinly
	 * Jul 18, 2013
	 * @param args
	 */
	public static void main(String[] args) {
	 Message m = new Message();
	 m.setContent("test bean copy.");
	 Message m3 = m;
	 System.out.println(m);
	 System.out.println(m3);
	 System.out.println(m.getContent());
	 m.setContent(m.getContent() + "kkkkkkkkkkkkkkkkkkkkkkk");
	 System.out.println(m3.getContent());
	 System.out.println("----------------------");
	
	 Message m2 = new Message();
	 copy(m,m2);
	 System.out.println(m);
	 System.out.println(m2);
	 System.out.println(m.getContent());
	 m.setContent(m.getContent() + "000000000000000000000000");
	 System.out.println(m.getContent());
	 System.out.println(m2.getContent());
	}

	public String getSkipMethod() {
	 return skipMethod;
	}

	public void setSkipMethod(String skipMethod) {
	 this.skipMethod = this.skipMethod + "#" + skipMethod;
	}

	}

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　实体对象拷贝　

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