PageHelper使用方法，加实例（笔记）

╰半夏微凉° 2022-04-22 13:16 359阅读 0赞

1.在pom.xml中添加如下：

<dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>${pagehelper-version}</version>
    </dependency>
    
    
    <dependency>
      <groupId>com.github.jsqlparser</groupId>
      <artifactId>jsqlparser</artifactId>
      <version>${jsqlparser-version}</version>
    </dependency>

2.在spring-mybatis中添加如下

<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.PageInterceptor">
                    <property name="properties">
                        
                        <value>
                            helperDialect=postgresql
                            reasonable=true
                            supportMethodsArguments=true
                            params=count=countSql
                            autoRuntimeDialect=true
                        </value>
                    </property>
                </bean>
            </array>
        </property>
    </bean>

3.在controller中

@RequestMapping("pageHelperTest")
    public void getList(){
       userService.test();
    }

在service中

public void test(){
       PageHelper.startPage(1, 5);
       ArrayList<Users> list = userDao.getUserList();
       PageInfo<Users> page = new PageInfo<Users>(list);
       System.out.println("总数量：" + page.getTotal());
       System.out.println("当前页查询记录：" + page.getList().size());
       System.out.println("当前页码：" + page.getPageNum());
       System.out.println("每页显示数量：" + page.getPageSize());
       System.out.println("总页：" + page.getPages());
    }

在dao中

ArrayList<Users> getUserList();

在mapping.xml中

<select id="getUserList"  resultType="com.hanpeng.entity.Users">
       select * from tb_users
    </select>