代码bug修改

pqs-common/common-web/src/main/java/com/njcn/web/config/DateTimeValidator.java

@@ -1,5 +1,6 @@
 package com.njcn.web.config;
 
+import cn.hutool.core.util.StrUtil;
 import com.njcn.web.pojo.annotation.DateTimeStrValid;
 
 import javax.validation.ConstraintValidator;
@@ -21,7 +22,7 @@ public class DateTimeValidator implements ConstraintValidator<DateTimeStrValid,
 
     @Override
     public boolean isValid(String value, ConstraintValidatorContext context) {
-        if (value == null) {
+        if (StrUtil.isBlank(value)) {
             return true;
         }
         String format = dateTime.format();