Common SQL sets

@valid Verification method ：
If you are springboot project , So you don't have to introduce , Has introduced , He exists at the core of web In the development package .

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <version>2.0.5.RELEASE</version>
</dependency>

If you're not springboot project , Then introduce the following dependencies ：

<dependency>
    <groupId>javax.validation</groupId>
    <artifactId>validation-api</artifactId>
    <version>1.1.0.Final</version>
</dependency>
 
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>5.4.1.Final</version>
</dependency>

Introduce annotations between entity classes

  /**  full name  */
    @NotBlank(message = " Please enter name ")
    @Length(message = " Names cannot exceed  {max}  character ", max = 10)
    public String name;
 
    /**  Age  */
    @NotNull(message = " Please enter age ")
    @Range(message = " The age range is  {min}  To  {max}  Between ", min = 1, max = 100)
    public Integer age;

Abnormal information ：

Confused query plus foreach The batch operation ：

<select id="searchPrivate" resultType="">
    select *
    from customer c LEFT JOIN base_user bu ON c.cur_uid = bu.id AND bu.status =  1
    <where>
        c.del_flag = 0
        <if test="param.cusName != null and param.cusName != ''">
            and c.cus_name like concat('%',#{
    param.cusName},'%')
        </if>
        <if test="param.cusId != null and param.cusId != ''">
            and c.cus_id = #{
    param.cusId}
        </if>
         <if test="param.intentElecStart != null">
            and <![CDATA[ c.intent_elec >= #{
    param.intentElecStart} ]]>
        </if>
        <if test="param.intentElecEnd != null">
            and <![CDATA[ c.intent_elec <= #{
    param.intentElecEnd} ]]>
        </if>
          <if test="param.cusType != null">
            and c.cus_type = #{
    param.cusType}
        </if>
            <if test="null != param.userIdList and param.userIdList.size() &gt; 0">
            and c.cur_uid in (
            <foreach collection="param.userIdList" item="item" separator=",">
                #{
    item}
            </foreach>
            )
        </if>
         <if test="null != param.cusIds and param.cusIds.size() &gt; 0">
            or c.cus_id in (
            <foreach collection="param.cusIds" item="item" separator=",">
                #{
    item}
            </foreach>
            )
        </if>
    </where>
    order by c.update_time desc
</select>