Mybaits 分页插件应用

mybaits 分页插件省去了很多麻烦，接下来介绍如果应用分页插件

1.首先导入pagehelper.jar和jsplparser

2 在mybaits.xml中配置

<plugins>
<plugin interceptor="com.github.pagehelper.PageInterceptor"></plugin>
</plugins>

3 在测试里代码写

@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(1, 4);//从第几页开始显示，

List<Employee> emps = mapper.getEmps();
//传入要连续显示多少页
PageInfo<Employee> info = new PageInfo<>(emps);
for (Employee employee : emps) {
System.out.println("获取的主键值为："+employee.getId());
}
/*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("连续显示的页码："+nums[i]);
}


//xxxx
} finally {
openSession.close();
}

}