spring boot和mybatis集成分页插件

MyBatis提供了拦截器接口,我们可以实现自己的拦截器,将其作为一个plugin装入到SqlSessionFactory中。
首先要说的是,Spring在依赖注入bean的时候,会把所有实现MyBatis中Interceptor接口的所有类都注入到SqlSessionFactory中,作为plugin存在。既然如此,我们集成一个plugin便很简单了,只需要使用@Bean创建PageHelper对象即可。
1、添加pom依赖
<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper</artifactId>
    <version>4.1.0</version>
</dependency>

2、MyBatisConfiguration.java类配置
package com.example.mybatis;

import java.util.Properties;

import javax.sql.DataSource;

import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.transaction.annotation.TransactionManagementConfigurer;

import com.github.pagehelper.PageHelper;

@Configuration
//加上这个注解,使得支持事务
@EnableTransactionManagement
public class MyBatisConfig implements TransactionManagementConfigurer {
    @Autowired
    private DataSource dataSource;
    
    @Override
    public PlatformTransactionManager annotationDrivenTransactionManager() {
        return new DataSourceTransactionManager(dataSource);
    }
    
    @Bean(name = "sqlSessionFactory")
    public SqlSessionFactory sqlSessionFactoryBean(PageHelper pageHelper) {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);

   //自定义数据库配置的时候,需要将pageHelper的bean注入到Plugins中,如果采用系统默认的数据库配置,则只需要定义pageHelper的bean,会自动注入。       

   bean.setPlugins(new Interceptor[] { pageHelper });
        try {
            return bean.getObject();
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException(e);
        }
    }

    @Bean
    public SqlSessionTemplate sqlSessionTemplate(SqlSessionFactory sqlSessionFactory) {
        return new SqlSessionTemplate(sqlSessionFactory);
    }
    
    @Bean
    public PageHelper pageHelper() {
        PageHelper pageHelper = new PageHelper();
        Properties p = new Properties();
        p.setProperty("offsetAsPageNum", "true");
        p.setProperty("rowBoundsWithCount", "true");
        p.setProperty("reasonable", "true");
        p.setProperty("dialect", "mysql");
        pageHelper.setProperties(p);
        return pageHelper;
    }
}

3、分页查询测试
    @RequestMapping("/likename")
    public List<Student> likeName(@RequestParam String name){
        PageHelper.startPage(1, 1);
        return stuMapper.likeName(name);
    }

原文地址:https://www.cnblogs.com/web424/p/6757296.html