mybatis返回list类型的

 <resultMap id="voyageIdResult" type="java.lang.String" >
        <result column="voyage_id" property="voyageId" jdbcType="VARCHAR" />
 </resultMap>

<select id="findAll" resultMap="voyageIdResult" parameterType="java.lang.String">
      select voyage_id from load_discharg where supplier_code = #{supplierCode};
</select>