这篇文章主要介绍了Java中2个对象字段值怎么比较是否相同的相关知识，内容详细易懂，操作简单快捷，具有一定借鉴价值，相信大家阅读完这篇Java中2个对象字段值怎么比较是否相同文章都会有所收获，下面我们一起来看看吧。
工具类
package com.shucha.deveiface.biz.utils; 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); }package com.shucha.deveiface.biz.model; import lombok.Data;import lombok.experimental.Accessors; @Data@Accessors(chain = true) //注解用来配置lombok如何产生和显示getters和setters的方法public class ApIData { private String ident_card; private String name; private String hh; private String month; private String owner_id; private String street_name;}关于“Java中2个对象字段值怎么比较是否相同”这篇文章的内容就介绍到这里，感谢各位的阅读！相信大家对“Java中2个对象字段值怎么比较是否相同”知识都有一定的了解，大家如果还想学习更多知识，欢迎关注编程网行业资讯频道。
