PageHelper插件实现服务器端分页功能

一、添加依赖
在.pom文件中添加

    <dependency>
      <groupId>com.github.pagehelpergroupId>
      <artifactId>pagehelperartifactId>
      <version>3.5.1version>
    dependency>

二、添加配置
在spring-mybaits.xml文件中添加插件

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

三、controller代码

    //分页展示用户
    @RequestMapping(value = "/user.do")
    public ModelAndView test1(HttpServletRequest request, HttpServletResponse response, ModelMap mode) throws Exception {

        ModelAndView modelAndView = new ModelAndView();
        int pageNumber = 1;
        try{
            if(request.getParameter("pageNow").equals(null)){
                System.out.println("参数空");
            }else {
                pageNumber = Integer.parseInt(request.getParameter("pageNow"));
            }
        }catch (Exception e){
            //处理空针错误
        }

        System.out.println("请求参数"+request.getParameter("pageNow"));
        PageInfo pageInfo = userService.selectUserByPage(pageNumber,5);

//        Map map = new HashMap();
//        List