Mybatis分页插件——PageHelper

Posted 2020-10-23 晨M风

1.引入依赖

    <!-- mybatis分页插件 -->
    <dependency>
        <groupId>com.github.pagehelper</groupId>
        <artifactId>pagehelper</artifactId>
        <version>4.2.1</version>
    </dependency>

　　注意：PageHelp版本要依据 JDK版本 和 Mybatis版本来选择，不然会报错

 

2.修改spring-mybatis.xml

    <bean name="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="mapperLocations" value="classpath:com/wode/mapper/*.xml" />
        <property name="plugins">
            <array>
                <bean class="com.github.pagehelper.PageHelper">
                    <property name="properties">
                        <value>
                            dialect=mysql
                        </value>
                    </property>
                </bean>
            </array>
        </property>
    </bean>

 

3.在service层中调用

@Service
public class MsgService {
    @Resource
    private MsgMapper msgMapper;

    public PageInfo<Msg> queryMsgByUserId(String userId, int currentPage){
        //参数一是起始页（1.2.3.4...），参数二是每页显示的条数
        PageHelper.startPage(currentPage, IConstant.MSG_PAGE_SIZE);
        List<Msg> msgList = msgMapper.queryMsgByUserId(userId);
        PageInfo<Msg> pageJson = new PageInfo<Msg>(msgList);
        return pageJson;
    }
}

 

参考链接：https://github.com/pagehelper/Mybatis-PageHelper/blob/master/wikis/zh/HowToUse.md