code: public static WebValidator notBlankSpace(String propertyName, String propertyValue) {
  		WebValidator valid;
  		if (StringUtils.isEmpty(propertyValue) || propertyValue.trim().length() != 0) {
  			valid = new WebValidator(true, "");
  		} else {
  			valid = new WebValidator(false, propertyName + "不能为纯空格");
  		}
  		return valid;
  	}
docs: 验证不能为纯空格，但是不做为空校验. Validate not all spaces.
  @param propertyName
  @param propertyValue
  @since 2.0.1