mybatis框架的分页功能

需求说明：为用户管理之查询用户列表功能增加分页实现      列表结果按照创建时间降序排列

/**
* 需求说明：为用户管理之查询用户列表功能增加分页实现 列表结果按照创建时间降序排列
* @param roleids
* @return
*/
public List<User> getUserListByPage(@Param("usercode")String usercode,@Param("userName")String userName,@Param("userRole")Integer userRole,@Param("pageSize")Integer pageSize,@Param("currentPage")Integer currentPage);

<!--分页查询 -->
<select id="getUserListByPage" resultMap="userList" >
　　select * from smbms_user a,smbms_role r where 1=1 and a.userrole=r.id
　　　　<if test=" userName!=null and userName!='' "> and a.userName like concat('%',#{userName},'%') </if>
　　　　<if test=" userRole!=null and userRole!='' "> and a.userrole=#{userRole} </if>
　　order by a.creationdate desc limit #{currentPage},#{pageSize}
</select>

<!-- 当数据库中的字段信息与对象的属性不一致时需要通过resultMap来映射 -->
<resultMap type="User" id="userList">
　　<result property="id" column="id"/>
　　<result property="userCode" column="userCode"/>
　　<result property="userName" column="userName"/>
　　<result property="phone" column="phone"/>
　　<result property="birthday" column="birthday"/>
　　<result property="gender" column="gender"/>
　　<result property="userRole" column="userRole"/>
　　<!-- <result property="userRoleName" column="roleName"/> -->
</resultMap>

     //mybatis分页
         @Test
         public void testGetUserListByPage(){
             SqlSession sqlSession = null;
             String usercode="";
             String userName="";
             Integer userRole=3;
             Integer pageSize=5;
             Integer currentPage=0;//mysql数据库默认起步是从0开始
             List<User> userListShow=new ArrayList<User>();
             try {

                 sqlSession = MyBatisUtil.createSqlSession();
                 userListShow = sqlSession.getMapper(UserMapper.class).getUserListByPage(usercode,userName,userRole,pageSize,currentPage);

             } catch (Exception e) {
                 // TODO: handle exception
                 e.printStackTrace();
             }finally{
                 MyBatisUtil.closeSqlSession(sqlSession);
             }
             for(User user: userListShow){
                 logger.debug("testGetUserListByPage UserCode: " + user.getUserCode() + " and UserName: " + user.getUserName()+"and userRole:"+user.getUserRole());
             }

         }
     

运行结果：

 [DEBUG] 2019-12-22 17:53:33,894 cn.smbms.dao.user.UserMapper.getUserListByPage - ==>  Preparing: select * from smbms_user a,smbms_role r where 1=1 and a.userrole=r.id and a.userrole=? order by a.creationdate desc limit ?,?
 [DEBUG] 2019-12-22 17:53:33,911 cn.smbms.dao.user.UserMapper.getUserListByPage - ==> Parameters: 3(Integer), 0(Integer), 5(Integer)
 [DEBUG] 2019-12-22 17:53:33,925 org.apache.ibatis.transaction.jdbc.JdbcTransaction - Resetting autocommit to true on JDBC Connection [com.mysql.jdbc.JDBC4Connection@4a738d08]
 [DEBUG] 2019-12-22 17:53:33,925 org.apache.ibatis.transaction.jdbc.JdbcTransaction - Closing JDBC Connection [com.mysql.jdbc.JDBC4Connection@4a738d08]
 [DEBUG] 2019-12-22 17:53:33,925 org.apache.ibatis.datasource.pooled.PooledDataSource - Returned connection 1249086728 to pool.
 [DEBUG] 2019-12-22 17:53:33,926 cn.smbms.dao.user.UserMapperTest - testGetUserListByPage UserCode: sunxing and UserName: 孙兴and userRole:3
 [DEBUG] 2019-12-22 17:53:33,926 cn.smbms.dao.user.UserMapperTest - testGetUserListByPage UserCode: zhangchen and UserName: 张晨and userRole:3
 [DEBUG] 2019-12-22 17:53:33,926 cn.smbms.dao.user.UserMapperTest - testGetUserListByPage UserCode: dengchao and UserName: 邓超and userRole:3
 [DEBUG] 2019-12-22 17:53:33,926 cn.smbms.dao.user.UserMapperTest - testGetUserListByPage UserCode: zhaoyan and UserName: 赵燕and userRole:3
 [DEBUG] 2019-12-22 17:53:33,926 cn.smbms.dao.user.UserMapperTest - testGetUserListByPage UserCode: sunlei and UserName: 孙磊and userRole:3