比较两个对象是否相同并获得不同的字段。@Excel注解获取属性

这里的sourse 是实体类对象
field.getName()  获取实体类属性  name,sex,之类

Map<String, Object> sourceMap = mapper.convertValue(source, new TypeReference<Map<String, Object>>() {
        });
把实体类转换成Map对象

   Excel attr = field.getAnnotation(Excel.class);
   attr.name()  获取@Excel  name值
   attr.targetAttr()  获取targetAttr值
   @Excel(name = "照片",targetAttr = "latstImgPath")
    private String latstImgPath; //近照
/**
     * @Author:王梓宁
     * @Date 2020/6/30 14:24
     * 比较两个对象是否相同并获得不同的字段
     */
      private static final ObjectMapper mapper = new ObjectMapper();
    public static StringBuilder getModifyContent(Object source, Object target) {
        Map<String, Object> modifies = new HashMap<>();
        StringBuilder operDesc = new StringBuilder();
        if (!Objects.equals(source.getClass().getName(), target.getClass().getName())) {
            throw new CustomException("类型不匹配");
        }
        Map<String, Object> sourceMap = mapper.convertValue(source, new TypeReference<Map<String, Object>>() {
        });
        Map<String, Object> targetMap = mapper.convertValue(target, new TypeReference<Map<String, Object>>() {
        });
        Field[] allFields = source.getClass().getDeclaredFields();
        for (Field field : allFields) {
            Object sValue = sourceMap.get(field.getName());
            Object tValue = targetMap.get(field.getName());
            if (!Objects.equals(sValue, tValue)) {
                Excel attr = field.getAnnotation(Excel.class);
                if (attr != null) {
                    if (StringUtils.isNotBlank(attr.targetAttr())) {
                        operDesc.append(attr.name() + "变更;");
                    } else {
                        operDesc.append(attr.name() + "变更前:" + sValue + ",变更后:" + tValue + ";");
                    }
                }
            }


        }
        return operDesc;
    }