java 比较两个对象属性值变化情况，用于记录日志使用

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package com.cdc.console.controller;import java.beans.PropertyDescriptor;import java.lang.reflect.Field;import java.lang.reflect.Method;public class Test<T> {    public String contrastObj(Object oldBean, Object newBean) {        String str="";        //if (oldBean instanceof SysConfServer && newBean instanceof SysConfServer) {            T pojo1 = (T) oldBean;            T pojo2 = (T) newBean;        try {            Class clazz = pojo1.getClass();            Field[] fields = pojo1.getClass().getDeclaredFields();            int i=1;            for (Field field : fields) {                if("serialVersionUID".equals(field.getName())){                    continue;                }                PropertyDescriptor pd = new PropertyDescriptor(field.getName(), clazz);                Method getMethod = pd.getReadMethod();                Object o1 = getMethod.invoke(pojo1);                Object o2 = getMethod.invoke(pojo2);                if(o1==null || o2 == null){                    continue;                }                if (!o1.toString().equals(o2.toString())) {                    if(i!=1){                        str+=";";                    }                    str+=i+"、字段名称"+field.getName()+",旧值:"+o1+",新值:"+o2;                    i++;                }             }        } catch (Exception e) {            e.printStackTrace();        }     // }        return str;    }}

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