java objectUtils 使用可能會出現的問題

String s1 = ObjectUtils.identityToString(null);
String s2 = ObjectUtils.identityToString("");
String s3 = ObjectUtils.identityToString(Boolean.TRUE);
System.out.println(s1); // null
System.out.println(s2); //java.lang.String@73a80183
System.out.println(s3); //java.lang.Boolean@1afb7ac7

public static boolean isNullOrEmpty(Object obj){undefined
return obj ==null || 「」.equals(obj.toString())
}
public static boolean isEmpty(String str ) {return str==null || str.length() ==0;}

public class ObjectUtils {
    /**
     * 判斷物件是否為空（根據一般常用型別區分）
     * @param object
     * @return: boolean
     */
    public static boolean isEmpty(Object object){
        //判斷物件是否為null
        if (null == object){
            return true;
        }
        //判斷物件是否為String型別
        if (object instanceof String){
            if (object.toString().length() == 0){
                return true;
            }
        }
        //判斷物件是否為Map
        if (object instanceof Map){
            Map map = (Map)object;
            if (map.size() == 0){
                return true;
            }
        }
        //判斷物件是否為List
        if (object instanceof List){
            List list = (List)object;
            if (list.size() == 0){
                return true;
            }
        }
        //普通的類物件
        Field[] fields = object.getClass().getDeclaredFields();
        //先假設全部屬性都是空的，所以只要出現一個屬性不為空的就不需要在迴圈判斷
        boolean flag = true;
        for (Field field : fields) {
            field.setAccessible(true);
            try {
                if (!ObjectUtils.isEmpty(field.get(object))) {
                    flag = false;
                    break;
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return flag;
    }
    /**
     * 判斷obejct物件中除了names裡面的欄位，其他欄位都為null（已知物件型別）
     * @param object
     * @param names
     * @return
     */
    public static boolean isEmpty(Object object,String... names){
        Field[] fields = object.getClass().getDeclaredFields();
        //用於判斷所有屬性是否為空,如果引數為空則不查詢
        boolean flag = true;
        for (Field field : fields) {
            //不檢查 直接取值
            field.setAccessible(true);
            try {
                String fieldName = field.getName();
                List<String> nameList = new ArrayList<>();
                if (null != names && names.length != 0){
                    nameList = Arrays.asList(names);
                }
                if (!nameList.contains(fieldName) && !Objects.isNull(field.get(object))) {
                    //不為空
                    flag = false;
                    break;
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return flag;
    }
    /**
     * 判斷object物件中除了names裡面的欄位，其他欄位都為null或者是""（已知物件型別）
     * @param object
     * @param names
     * @return
     */
    public static boolean isBlank(Object object,String... names){
        Field[] fields = object.getClass().getDeclaredFields();
        //用於判斷所有屬性是否為空,如果引數為空則不查詢
        boolean flag = true;
        for (Field field : fields) {
            //不檢查 直接取值
            field.setAccessible(true);
            try {
                String fieldName = field.getName();
                List<String> nameList = new ArrayList<>();
                if (null != names && names.length != 0){
                    nameList = Arrays.asList(names);
                }
                Object value = field.get(object);
                if (!nameList.contains(fieldName) && !isEmpty(value)) {
                    //不為空
                    flag = false;
                    break;
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return flag;
    }
}