package com.shucha.deveiface.biz.utils; /** * @author tqf * @Description * @Version 1.0 * @since 2022-03-21 16:50 */ import com.shucha.deveiface.biz.model.Comparison; import java.lang.reflect.Field; import java.util.ArrayList; import java.util.List; public class CompareObjUtil { public static List<Comparison> compareObj(Object beforeObj, Object afterObj) throws Exception{ List<Comparison> diffs = new ArrayList<>(); if(beforeObj == null) { throw new RuntimeException("原对象不能为空"); } if(afterObj == null) { throw new RuntimeException("新对象不能为空"); } if(!beforeObj.getClass().isAssignableFrom(afterObj.getClass())){ throw new RuntimeException("两个对象不相同,无法比较"); } //取出属性 Field[] beforeFields = beforeObj.getClass().getDeclaredFields(); Field[] afterFields = afterObj.getClass().getDeclaredFields(); Field.setAccessible(beforeFields, true); Field.setAccessible(afterFields, true); //遍历取出差异值 if(beforeFields != null && beforeFields.length > 0){ for(int i=0; i<beforeFields.length; i++){ Object beforeValue = beforeFields[i].get(beforeObj); Object afterValue = afterFields[i].get(afterObj); if((beforeValue != null && !"".equals(beforeValue) && !beforeValue.equals(afterValue)) || ((beforeValue == null || "".equals(beforeValue)) && afterValue != null)){ Comparison comparison = new Comparison(); comparison.setField(beforeFields[i].getName()); comparison.setBefore(beforeValue); comparison.setAfter(afterValue); comparison.setIsUpdate(true); diffs.add(comparison); } } } return diffs; } } public static void main(String[] args) throws Exception { ApIData apIData = new ApIData() .setName("张三") .setMonth("5") .setHh("1"); ApIData apIData1 = new ApIData() .setName("张三") .setMonth("9") .setHh("35"); List<Comparison> list = CompareObjUtil.compareObj(apIData, apIData1); System.out.println(list); }
Atas ialah kandungan terperinci Bagaimana untuk membandingkan dua nilai medan objek di Jawa untuk melihat sama ada ia adalah sama. Untuk maklumat lanjut, sila ikut artikel berkaitan lain di laman web China PHP!