Mybatis分页插件PageHelper使用
使用PageHelper插件如何分页：
下载地址：
https://github.com/pagehelper/Mybatis-PageHelper
https://github.com/JSQLParser/JSqlParser
另外一个地址：
Pagehelper 下载地址：
http://repo1.maven.org/maven2/com/github/pagehelper/pagehelper/
jsqlparser 下载地址：
http://repo1.maven.org/maven2/com/github/jsqlparser/jsqlparser/
使用步骤：
1、导入相关包 pagehelper-x.x.x.jar 和 jsqlparser-x.x.x.jar。
2、在MyBatis全局配置文件中配置分页插件。
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<!-- 注意 <plugins> 在xml文件中的位置，必须要符合 http://mybatis.org/dtd/mybatis-3-config.dtd 中指定的顺序：-->
<!-- configuration (properties?, settings?, typeAliases?, typeHandlers?,
objectFactory?, objectWrapperFactory?, plugins?, environments?, databaseIdProvider?, mappers?) -->
<configuration>
<!-- 为SQL定义部分的parameterType或resultType属性指定自定义类型的别名 -->
<typeAliases>
<typeAlias alias="ServiceStation" type="com.mybatis.models.ServiceStation" />
<typeAlias alias="InspectorInfo" type="com.mybatis.models.InspectorInfo" />
<typeAlias alias="StationInspector" type="com.mybatis.models.StationInspector" />
</typeAliases>
<!-- 配置分页拦截器 -->
<plugins>
<!-- 配置分页插件 -->
<plugin interceptor="com.github.pagehelper.PageInterceptor"></plugin>
<!-- com.mybatis.util为PageHelper类所在包名 -->
<!-- <plugin interceptor="com.mybatis.util.PagePlugin"> -->
<!-- 设置数据库类型 Oracle,Mysql,MariaDB,SQLite,Hsqldb,PostgreSQL六种数据库-->
<!-- <property name="dialect" value="SQLite" /> -->
<!-- <property name="pageSqlId" value=".*Page.*" /> -->
<!-- </plugin> -->
</plugins>
<!-- 设置数据库连接参数 -->
<!-- 与spring 集成之后,这些可以完全删除,数据库连接的管理交给 spring 去管理 -->
<environments default="development">
<environment id="development">
<transactionManager type="JDBC" />
<dataSource type="POOLED">
<property name="driver" value="com.microsoft.sqlserver.jdbc.SQLServerDriver" />
<property name="url" value="jdbc:sqlserver://mssql-rw-cyp-coopbusiness.vip.test.suixinhuan.com;DatabaseName=CYP_CoopBusiness" />
<property name="username" value="Umanager" />
<property name="password" value="ASD123asd!1" />
</dataSource>
</environment>
</environments>
<!-- 加载SQL定义文件 -->
<!-- 这里交给sqlSessionFactory 的 mapperLocations属性去得到所有配置信息 -->
<mappers>
<mapper resource="com/mybatis/sql/ServiceStation.xml" />
<mapper resource="com/mybatis/sql/InspectorInfo.xml" />
<mapper resource="com/mybatis/sql/StationInspector.xml" />
</mappers>
</configuration>
3、使用PageHelper提供的方法进行分页
package com.mybatis;
import java.util.List;
import org.apache.ibatis.session.SqlSession;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.mybatis.dao.InspectorInfoMapper;
import com.mybatis.dao.MyBatisUtil;
import com.mybatis.dao.ServiceStationMapper;
import com.mybatis.dao.StationInspectorMapper;
import com.mybatis.models.ServiceStation;
import com.mybatis.models.InspectorInfo;
import com.mybatis.models.StationInspector;
//import com.mybatis.util.Page;
/*
* 测试类
*/
public class HelloMyBatisProgram {
public static void main(String[] args) {
SqlSession session = MyBatisUtil.getSession();
//由框架生成ServiceStationMapper接口实现对象
ServiceStationMapper ssDaoMaper = session.getMapper(ServiceStationMapper.class);
InspectorInfoMapper iiDaoMaper = session.getMapper(InspectorInfoMapper.class);
StationInspectorMapper siDaoMaper = session.getMapper(StationInspectorMapper.class);
//System.out.println(ssDaoMaper.getClass().getName());
System.out.println("===========分页获取所有服务站列表============");
//分页设置放在查询之前
Page<Object> page = PageHelper.startPage(1, 5, "StationName");
List<ServiceStation> listPage = ssDaoMaper.findAllPage("110100");
for(ServiceStation item:listPage) {
System.out.println(item.getStationName()+" "+item.getCityCode()+" "+item.getCityName());
}
System.out.println("当前页码："+page.getPageNum());
System.out.println("每页的记录数："+page.getPageSize());
System.out.println("总记录数："+page.getTotal());
System.out.println("总页码："+page.getPages());
}
}
4、可以使用更强大的PageInfo封装返回结果
package com.mybatis;
import java.util.List;
import org.apache.ibatis.session.SqlSession;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.mybatis.dao.InspectorInfoMapper;
import com.mybatis.dao.MyBatisUtil;
import com.mybatis.dao.ServiceStationMapper;
import com.mybatis.dao.StationInspectorMapper;
import com.mybatis.models.ServiceStation;
import com.mybatis.models.InspectorInfo;
import com.mybatis.models.StationInspector;
//import com.mybatis.util.Page;
/*
* 测试类
*/
public class HelloMyBatisProgram {
public static void main(String[] args) {
SqlSession session = MyBatisUtil.getSession();
//由框架生成ServiceStationMapper接口实现对象
ServiceStationMapper ssDaoMaper = session.getMapper(ServiceStationMapper.class);
InspectorInfoMapper iiDaoMaper = session.getMapper(InspectorInfoMapper.class);
StationInspectorMapper siDaoMaper = session.getMapper(StationInspectorMapper.class);
//System.out.println(ssDaoMaper.getClass().getName());
System.out.println("===========分页获取所有服务站列表============");
//分页设置放在查询之前
page = PageHelper.startPage(1, 3, "StationName desc");
List<ServiceStation> list = ssDaoMaper.findAll();
for(ServiceStation item:list) {
System.out.println(item.getStationName()+" "+item.getCityCode()+" "+item.getCityName());
}
PageInfo<ServiceStation> info = new PageInfo<ServiceStation>(list, 3);
System.out.println("当前页码："+info.getPageNum());
System.out.println("每页的记录数："+info.getPageSize());
System.out.println("总记录数："+info.getTotal());
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]);
}
}
}
