如何解决@NotBlank不生效的问题

/**
     * 标签体系ID
     */
    @NotBlank(message = "00000002")
    @Length(max = 20, message = "00000005")
    private String systemId;
 
    /**
     * 条件模板id
     */
    private String templateId;
 
    /**
     * 条件模板代码
     */
    private String templateCode;
 
    /**
     * 条件模板名称
     */
    @NotBlank(message = "00001001")
    @Length(max = 20, message = "00001002")
    private String templateName;
 
    /**
     * 条件表达式
     */
    @NotBlank(message = "00001003")
    @Length(max = 200, message = "00001004")
    private String templateConditionExpr;
 
    /**
     * 排序
     */
    private Integer sort;
 
    /**
     * 条件模板字段数据
     */
    @Valid
    @NotEmpty(message = "00001005")
    private List<PotentialConColParam> conTemplatesCols;

/**
     * 标签代码
     */
    @NotBlank(message = "00001006")
    @Length(max = 64, message = "00001007")
    private String labelCode;
 
    /**
     * 条件名称
     */
    @NotBlank(message = "00001008")
    @Length(max = 20, message = "00001009")
    private String conditionName;
 
    /**
     * 操作符
     */
    @NotBlank(message = "00001010")
    @Length(max = 20, message = "00001011")
    private String operation;
 
    /**
     * 条件赋值
     */
    @NotBlank(message = "00001012")
    @Length(max = 20, message = "00001013")
    private String conditionValue;