Mybatis分页插件

Posted 2020-08-15 吐槽村

mybatis配置

   	<!-- mybatis分页插件 -->
	<bean id="pagehelper" class="com.github.pagehelper.PageHelper">
		<property name="properties">
			<props>
				<prop key="offsetAsPageNum">true</prop>
				<prop key="rowBoundsWithCount">true</prop>
				<prop key="pageSizeZero">true</prop>
				<prop key="reasonable">false</prop>
				<prop key="supportMethodsArguments">false</prop>
			</props>
		</property>
	</bean>

      <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->  
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  
        <property name="dataSource" ref="dataSource" />  
        <!-- 自动扫描mapping.xml文件 -->  
        <property name="mapperLocations" value="classpath:com/tucaocun/mapping/*.xml"></property>  
        <property name="plugins">
			<list>
				<!-- <ref bean="offsetLimitIntercepter" /> -->
				<ref bean="pagehelper" />
			</list>
		</property>
    </bean>  

　　java 类，写一个class继承这个抽象类

public abstract class AbstractPageForm<T extends AbstractPageForm<T>> implements Serializable {

	private static final long serialVersionUID = 1L;

	/**
	 * @Description 页码为首页
	 */
	@DefaultValue("1")
	@QueryParam("pageNum")
	protected int pageNum = 1;
	/**
	 * @Description 每页显示数量，默认为10
	 */
	@DefaultValue("10")
	@QueryParam("pageSize")
	protected int pageSize = 10;

	public int getPageNum() {
		return pageNum;
	}

	public void setPageNum(int pageNum) {
		this.pageNum = pageNum;
	}

	public int getPageSize() {
		return pageSize;
	}

	public void setPageSize(int pageSize) {
		this.pageSize = pageSize;
	}

	/**
	 * @Title enablePaging
	 * @Description 启用分页
	 * @return
	 */
	@SuppressWarnings("unchecked")
	public final T enablePaging() {
		PageHelper.startPage(pageNum, pageSize);
		return (T) this;
	}


}

　　mapper.xml   (CourseForm继承了AbstractPageForm的抽象类)

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.*.*DAO" >
  <resultMap id="BaseResultMap" type="com.*.Class" >
    <id column="id" property="id" jdbcType="INTEGER" />
   
  </resultMap>

  
    <select id="selectCourseList" resultMap="BaseResultMap" parameterType="com.*.form.CourseForm" >
    select 
    <include refid="Base_Column_List" />
    from TABLE_NAME
  </select>
  
</mapper>

　　分页类示例：

@Override
	public PageInfo<Class> queryList(CourseForm courseForm) {
　　　　　　　　//Class需要替换成自己的类
		List<Class> selectList = organizationDAO.selectList(courseForm.enablePaging());
		PageInfo<Class> pageInfo = new PageInfo<Class>(selectList);
		return pageInfo;
	}

　　pageInfo,POM配置

		
		<dependency>
		    <groupId>com.github.pagehelper</groupId>
		    <artifactId>pagehelper</artifactId>
		    <version>4.1.5</version>
		</dependency>