Mybatis paging plug-in pageHelper detailed explanation and simple example

<!-- Pagination Helper -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>3.7.5</version>
</dependency>

<?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">

 <configuration>
 <!-- Pagination Helper -->
 <plugins>
  <!-- com.github.pagehelper is the package name of the PageHelper class-->
  <plugin interceptor="com.github.pagehelper.PageHelper">
  <!-- Database Dialect -->
    <property name="dialect" value="MySQL"/>
    <!-- When set to true, using RowBounds paging will perform a count query to find the total number -->
    <property name="rowBoundsWithCount" value="true"/>
  </plugin>
</plugins>
 </configuration>

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />

<property name="configLocation" value="classpath:mybatis-config.xml"></property>

<property name="mapperLocations" value="classpath:com/lyitong/mapping/*.xml"></property>

<typeAliases>
    <!-- The unqualified class name of javabean with the first letter of the class in lowercase is used as its alias (in fact, the alias is not case-sensitive). You can also add the @Alias ​​annotation to the JavaBean to define an alias, for example: @Alias(student) -->
    <package name="com.lyt.usermanage.mapper"/>
  </typeAliases>

 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <!-- Load the global configuration file -->
    <property name="configLocation" value="classpath:mybatis/mybatis-config.xml"></property>
    <!-- Configure mapper scanning to find all mapper.xml mapping files. -->
    <property name="mapperLocations" value="classpath:com/lyt/usermanage/mapper/*.xml"></property>
    <!-- Configuration type alias -->
    <property name="typeAliasesPackage" value="classpath:com/lyt/usermanage/pojo/*"></property>
  </bean>

    <property name="typeAliasesPackage" value="classpath:com/lyt/usermanage/pojo/*"></property>

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="mapperLocations" value="classpath:com/lyitong/mapping/*.xml"></property>

<!-- pageHelper paging plugin-->
<property name="plugins">
  <array>
   <bean class="com.github.pagehelper.PageHelper">
    <property name="properties">
     <value>
      dialect=mysql
      rowBoundsWithCount=true
     </value>
    </property>
   </bean>
  </array>
</property>
</bean>

PageHelper.startPage(Integer.parseInt(currentPage), Integer.parseInt(pageSize));
  List<LytBbsTz> publishTz = bbsTzDao.getPublishTz(userId);
  PageInfo<LytBbsTz> info = new PageInfo<LytBbsTz>(publishTz);
  map.put("status", 1);
  map.put("tzList", info.getList());
  return map;

@RequestParam(defaultValue="1",value="currentPage")String currentPage, @RequestParam(defaultValue="10",value="pageSize")String pageSize