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  • mybatis list array参数

    <!--List:forech中的collection属性类型是List,collection的值必须是:list,item的值可以随意,Dao接口中参数名字随意 -->
        <select id="getEmployeesListParams" resultType="Employees">
            select *
            from EMPLOYEES e
            where e.EMPLOYEE_ID in
            <foreach collection="list" item="employeeId" index="index"
                open="(" close=")" separator=",">
                #{employeeId}
            </foreach>
        </select>

        <!--Array:forech中的collection属性类型是array,collection的值必须是:list,item的值可以随意,Dao接口中参数名字随意 -->
        <select id="getEmployeesArrayParams" resultType="Employees">
            select *
            from EMPLOYEES e
            where e.EMPLOYEE_ID in
            <foreach collection="array" item="employeeId" index="index"
                open="(" close=")" separator=",">
                #{employeeId}
            </foreach>
        </select>

        <!--Map:不单单forech中的collection属性是map.key,其它所有属性都是map.key,比如下面的departmentId -->
        <select id="getEmployeesMapParams" resultType="Employees">
            select *
            from EMPLOYEES e
            <where>
                <if test="departmentId!=null and departmentId!=''">
                    e.DEPARTMENT_ID=#{departmentId}
                </if>
                <if test="employeeIdsArray!=null and employeeIdsArray.length!=0">
                    AND e.EMPLOYEE_ID in
                    <foreach collection="employeeIdsArray" item="employeeId"
                        index="index" open="(" close=")" separator=",">
                        #{employeeId}
                    </foreach>
                </if>
            </where>
        </select>

    Mapper类:
    public interface EmployeesMapper { 

        List<Employees> getEmployeesListParams(List<String> employeeIds);

        List<Employees> getEmployeesArrayParams(String[] employeeIds);

        List<Employees> getEmployeesMapParams(Map<String,Object> params);
    }

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  • 原文地址:https://www.cnblogs.com/zfzf1/p/6910231.html
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