类似BeanUtils的东西

 package com.demo.study;import java.lang.reflect.Field;import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;public class BeanUtilCopy {@SuppressWarnings("unchecked")public static void copyProperties(Object target, Object source)throws Exception {/* * 分别获得源对象和目标对象的Class类型对象,Class对象是整个反射机制的源头和灵魂！ * * Class对象是在类加载的时候产生,保存着类的相关属性，构造器，方法等信息 */Class sourceClz = source.getClass();Class targetClz = target.getClass();// 得到Class对象所表征的类的所有属性(包括私有属性)Field[] fields = sourceClz.getDeclaredFields();for (int i = 0; i < fields.length; i++) {String fieldName = fields[i].getName();Field targetField = null;try {// 得到targetClz对象所表征的类的名为fieldName的属性，不存在就进入下次循环targetField = targetClz.getDeclaredField(fieldName);} catch (SecurityException e) {e.printStackTrace();break;} catch (NoSuchFieldException e) {continue;}// 判断sourceClz字段类型和targetClz同名字段类型是否相同if (fields[i].getType() == targetField.getType()) {// 由属性名字得到对应get和set方法的名字String getMethodName = "get"+ fieldName.substring(0, 1).toUpperCase()+ fieldName.substring(1);String setMethodName = "set"+ fieldName.substring(0, 1).toUpperCase()+ fieldName.substring(1);// 由方法的名字得到get和set方法的Method对象Method getMethod;try {getMethod = sourceClz.getDeclaredMethod(getMethodName,new Class[] {});Method setMethod = targetClz.getDeclaredMethod(setMethodName, fields[i].getType());// 调用source对象的getMethod方法Object result = getMethod.invoke(source, new Object[] {});// 调用target对象的setMethod方法setMethod.invoke(target, result);} catch (SecurityException e) {e.printStackTrace();} catch (NoSuchMethodException e) {e.printStackTrace();} catch (IllegalArgumentException e) {e.printStackTrace();} catch (IllegalAccessException e) {e.printStackTrace();} catch (InvocationTargetException e) {e.printStackTrace();}} else {throw new Exception("同名属性类型不匹配！");}}}}