Mybatis学习笔记11:PageHelper分页插件
1、引入PageHelper的包
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>最新版本</version>
</dependency>
2、使用
@Test
public void test01() throws IOException {
// 1、获取sqlSessionFactory对象
SqlSessionFactory sqlSessionFactory = getSqlSessionFactory();
// 2、获取sqlSession对象
SqlSession openSession = sqlSessionFactory.openSession();
try {
EmployeeMapper mapper = openSession.getMapper(EmployeeMapper.class);
Page<Object> page = PageHelper.startPage(5, 1);
List<Employee> emps = mapper.getEmps();
//传入要连续显示多少页
PageInfo<Employee> info = new PageInfo<>(emps, 5);
for (Employee employee : emps) {
System.out.println(employee);
}
/*System.out.println("当前页码:"+page.getPageNum());
System.out.println("总记录数:"+page.getTotal());
System.out.println("每页的记录数:"+page.getPageSize());
System.out.println("总页码:"+page.getPages());*/
///xxx
System.out.println("当前页码:"+info.getPageNum());
System.out.println("总记录数:"+info.getTotal());
System.out.println("每页的记录数:"+info.getPageSize());
System.out.println("总页码:"+info.getPages());
System.out.println("是否第一页:"+info.isIsFirstPage());
System.out.println("连续显示的页码:");
int[] nums = info.getNavigatepageNums();
for (int i = 0; i < nums.length; i++) {
System.out.println(nums[i]);
}
//xxxx
} finally {
openSession.close();
}
}