使用rownum对oracle分页

以Student表为例进行分页

纯sql分页

 SELECT * FROM (
       SELECT ROWNUM RN,A.* FROM (
            SELECT *
            FROM STUDENT ORDER BY SNAME ASC
       )A WHERE ROWNUM <= 20 )
  WHERE RN >=11;

mybatis分页

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMap PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN" "http://ibatis.apache.org/dtd/sql-map-2.dtd" >
<sqlMap namespace="student">
	<typeAlias alias="Student" type="com.bobo.code.model.Student" />
	<select id="select" resultClass="Student">
		SELECT * FROM
		(
			SELECT  A.*,ROWNUM RN	FROM
				 (SELECT * FROM	STUDENT) A
			WHERE  <![CDATA[ ROWNUM <=  #maxRowNum#]]>
		)
		WHERE  <![CDATA[RN >=   #minRowNum#]]>
	</select>

	<select id="count" resultClass="java.lang.Integer">
		SELECT count(*) FROM STUDENT
	</select>

</sqlMap>

　　

		queryMap.put("minRowNum", (pageNumber - 1)*Pager.DEFAULT_PAGE_SIZE +1);//oracle rownum起
		queryMap.put("maxRowNum", pageNumber * Pager.DEFAULT_PAGE_SIZE );//oracle rownum止

　

 

开发过程异常

无法转换为内部表示

当Student的属性id 为Integer,和数据库中的字段ID为VARCHAR2 导致不对应会取不出数据,报错(无法转换为内部表示):

如果sql语句错误,比如多了一个逗号之类的,会报错(ORA-00936):