Spring Boot集成MyBatis與分頁插件

Maven依賴:

<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper</artifactId>
    <version>4.1.6</version>
</dependency>

MybatisConfig.java:

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  
@EnableTransactionManagement  
public class MyBatisConfig implements TransactionManagementConfigurer {
    
    @Autowired
    DataSource dataSource;
    
    

    @Bean(name = "sqlSessionFactory")
    public SqlSessionFactory sqlSessionFactoryBean() {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        // 分頁插件
        PageHelper pageHelper = new PageHelper();
        Properties props = new Properties();
        props.setProperty("reasonable", "true");
        props.setProperty("supportMethodsArguments", "true");
        props.setProperty("returnPageInfo", "check");
        props.setProperty("params", "count=countSql");
        pageHelper.setProperties(props);
        // 添加插件
        bean.setPlugins(new Interceptor[] { pageHelper });
        try {
            return bean.getObject();
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    @Bean
    public SqlSessionTemplate sqlSessionTemplate(SqlSessionFactory sqlSessionFactory) {
        return new SqlSessionTemplate(sqlSessionFactory);
    }

    @Bean
    @Override
    public PlatformTransactionManager annotationDrivenTransactionManager() {
        return new DataSourceTransactionManager(dataSource);
    }
    
    
}

PageHelper.startPage(pageNum,pageSize)方法調用后，后面必須有一個Mapper的查詢方法，必須被消費掉。

List<Map> result=userMapper.getUser()

return new PageInfo(result)

當時知道數據類型時，可以進行強轉。String s=JSON.toJSONString(json);JSONObject json=JSONObject.parentObject(String s)

還有遇到了postman無法使用的問題，因為開了綠豆vpn......