mybatis sql语句获取不到参数
需要一个userId 我在Dao层this.getSqlSession().selectOne("userManage.retrieveUserDetail", input);执行前
syso了 input 里面是有userId的 为什么执行的时候userId 是null？？

Java code

<select id="retrieveUserDetail" parameterType="cdata" resultType="cdata">          <![CDATA[            SELECT u.user_id "userId",                   u.user_name "userName",                   u.password "password",                   u.email "email",                   u.phone_no "phoneNo",                   u.fax_no "faxNo",                   u.create_by "createBy",                   u.create_date "createDate",                   u.use_flag "useFlag",                   u.address "address",                   u.dept_id "deptId",                   d.DEPT_NAME "deptname",                   u.position "position",                   u.mobile_no "mobileNo",                   u.notes "notes",                   u.sub_dept_id "subDeptId",                    a.auth_code as "code"              FROM T_user_m u ,t_auth_user a,t_dept_m d             WHERE u.user_id = #{userId} and u.user_id=a.user_id and u.DEPT_ID=d.DEPT_ID        ]]>    </select>

[解决办法]
WHERE u.user_id = #{userId}# and u.user_id=a.user_id and u.DEPT_ID=d.DEPT_ID
[解决办法]
cdata是什么类型，定义了别名吗？
建议参数用Map代替
parameterType="java.util.Map"
[解决办法]
错了
该
WHERE u.user_id = #userId# and u.user_id=a.user_id and u.DEPT_ID=d.DEPT_ID
[解决办法]
一个参数就用parameterType=“java.lang.String”