How to integrate mybatis3 in springboot2.0

This article introduces how to integrate mybatis3 in springboot2.0. The content is very detailed. Interested friends can use it for reference. I hope it will be helpful to you.

SpringBoot's support for MyBatis requires the following two dependencies to be added, which can be copied to the project's pom path

Org.mybatis.spring.boot mybatis-spring-boot-starter 1.3.2 mysql mysql-connector-java

Then we need to configure MyBatis, including adding MyBatis classes, configuring related packet scanning paths, including scanning DAO, MODEL, and XML mapping files

Create a new MyBatis configuration class under the config package

Import org.apache.ibatis.session.SqlSessionFactory;import org.mybatis.spring.SqlSessionFactoryBean;import org.mybatis.spring.annotation.MapperScan;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.core.io.support.PathMatchingResourcePatternResolver;import javax.sql.DataSource;@Configurationpublic class MybatisConfig {@ Autowired private DataSource dataSource; @ Bean public SqlSessionFactory sqlSessionFactory () throws Exception {SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean () SessionFactory.setDataSource (dataSource); sessionFactory.setTypeAliasesPackage ("cn.mulc.swagger.entity"); / / scan Model PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver (); sessionFactory.setMapperLocations (resolver.getResources ("classpath*:/mybatis/*.xml")); / / scan mapping file return sessionFactory.getObject ();}}

Create a new database named demo, and then configure it in the application.yml file

Server: port: 8080spring: datasource: driverClassName: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/demo?useUnicode=true&zeroDateTimeBehavior=convertToNull&autoReconnect=true&characterEncoding=utf-8 username: root password: root

Modify the startup class to add the package sweep configuration

@ SpringBootApplication@MapperScan ("cn.mulc.swagger.mapper") public class SwaggerApplication {public static void main (String [] args) {SpringApplication.run (SwaggerApplication.class, args);}}

Start the program, you can find that there is no error and the log has been typed out without mapper

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