(1)无条件的分页的mapper文件配置和Java代码实现
<!-- 传入的参数类型为map,此时无需使用map.get("key")去获得实际值,只需填入key值便可 -->
<select id="findByPage" parameterType="map" resultMap="studentMap">
select id,name,age,sex from student
limit #{start},#{end}
</select>
/*
* 无条件分页查询
*/
public List<Student> findByPage(int start,int end)
{
SqlSession sqlSession = null;
try{
sqlSession = MyBatisUtil.getSqlSession();
Map<String,Object> param = new LinkedHashMap<String,Object>();
param.put("start",start);
param.put("end",end);
List<Student> stuList;
stuList = sqlSession.selectList(Student.class.getName()+".findByPage", param);
System.out.println("添加查询成功");
return stuList;
}catch(Exception e){
e.printStackTrace();
throw e;
}finally{
MyBatisUtil.closeSqlSession();
}
}
(2)有条件的分页的mapper文件配置和Java代码实现
<select id="findByPageAndRequest" parameterType="map" resultMap="studentMap">
select id,name,age,sex from student
where name like #{name}
limit #{start},#{end}
</select>
/*
* 有条件分页查询
*/
public List<Student> findByPageAndRequest(String name,int start,int end)
{
SqlSession sqlSession = null;
try{
sqlSession = MyBatisUtil.getSqlSession();
Map<String,Object> params = new LinkedHashMap<String,Object>();
//当sql的条件有模糊匹配时,参数需前后带上%
params.put("name", "%"+name+"%");
params.put("start", start);
params.put("end", end);
List<Student> stuList;
stuList = sqlSession.selectList(Student.class.getName()
+".findByPageAndRequest", params);
System.out.println("添加查询成功");
return stuList;
}catch(Exception e){
e.printStackTrace();
throw e;
}finally{
MyBatisUtil.closeSqlSession();
}
}