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本篇文章為大家展示了使用Spring Boot如何實現對MyBatis的整合，內容簡明扼要并且容易理解，絕對能使你眼前一亮，通過這篇文章的詳細介紹希望你能有所收獲。
1.加入mybatis-spring-boot-stater的Maven依賴
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.1.1</version>
</dependency>2.配置數據源
在src/main/resource中，application.properties配置文件中，這里面添加了一些數據庫連接的信息
spring.datasource.url=jdbc:mysql://localhost:3306/test spring.datasource.username=root spring.datasource.password=root spring.datasource.driver-class-name=com.mysql.jdbc.Driver
3.代碼注入數據源
package com.example;
import javax.sql.DataSource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.boot.web.servlet.ServletListenerRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.core.env.Environment;
import org.springframework.web.servlet.DispatcherServlet;
import com.alibaba.druid.pool.DruidDataSource;
import com.example.Listener.IndexListener;
import com.example.filter.IndexFilter;
import com.example.servlet.MyServlet;
@SpringBootApplication
public class SpringBootSimpleApplication {
@Autowired
private Environment env;
@Bean
public DataSource dataSource() {
DruidDataSource dataSource = new DruidDataSource();
dataSource.setUrl(env.getProperty("spring.datasource.url"));
dataSource.setUsername(env.getProperty("spring.datasource.username"));//用戶名
dataSource.setPassword(env.getProperty("spring.datasource.password"));//密碼
dataSource.setDriverClassName(env.getProperty("spring.datasource.driver-class-name"));
dataSource.setInitialSize(2);
dataSource.setMaxActive(20);
dataSource.setMinIdle(0);
dataSource.setMaxWait(60000);
dataSource.setValidationQuery("SELECT 1");
dataSource.setTestOnBorrow(false);
dataSource.setTestWhileIdle(true);
dataSource.setPoolPreparedStatements(false);
return dataSource;
}
public static void main(String[] args) {
SpringApplication.run(SpringBootSimpleApplication.class, args);
}
}4.增加MyBatis的配置
MyBatisConfig.java類：
package com.example.mybatis;
import javax.sql.DataSource;
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;
@Configuration
//加上這個注解，使得支持事務
@EnableTransactionManagement
public class MyBatisConfig implements TransactionManagementConfigurer {
@Autowired
private DataSource dataSource;
@Override
public PlatformTransactionManager annotationDrivenTransactionManager() {
return new DataSourceTransactionManager(dataSource);
}
@Bean(name = "sqlSessionFactory")
public SqlSessionFactory sqlSessionFactoryBean() {
SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
bean.setDataSource(dataSource);
try {
return bean.getObject();
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException(e);
}
}
@Bean
public SqlSessionTemplate sqlSessionTemplate(SqlSessionFactory sqlSessionFactory) {
return new SqlSessionTemplate(sqlSessionFactory);
}
}MyBatisMapperScannerConfig.java類：
package com.example.mybatis;
import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
* 掃描mybatis的接口
*/
@Configuration
// 因為這個對象的掃描，需要在MyBatisConfig的后面注入，所以加上下面的注解
@AutoConfigureAfter(MyBatisConfig.class)
public class MyBatisMapperScannerConfig {
@Bean
public MapperScannerConfigurer mapperScannerConfigurer() {
MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();
//獲取之前注入的beanName為sqlSessionFactory的對象
mapperScannerConfigurer.setSqlSessionFactoryBeanName("sqlSessionFactory");
//指定xml配置文件的路徑
mapperScannerConfigurer.setBasePackage("com.example.mybatis.mapper");
return mapperScannerConfigurer;
}
}5.mybatis接口配置，這里使用student表作為示例
使用@Mapper注解來標識一個接口為MyBatis的接口，MyBatis會自動尋找這個接口
package com.example.mybatis.mapper;
import java.util.List;
import java.util.Map;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
@Mapper
public interface StudentMapper {
@Select("select * from student;")
public List<Map<String,Object>> find();
@Insert("insert into student(id,name,age,score_sum,score_avg) "+
"values(#{id},'Jim',33,200,100)")
public int insert(@Param("id")int id);
}6.service業務層調用接口
package com.example.mybatis;
import java.util.List;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.example.mybatis.mapper.StudentMapper;
@Service
public class StuMybatisService {
@Autowired
private StudentMapper studentMapper;
public List<Map<String,Object>> find(){
return studentMapper.find();
}
public int insert(int id){
return studentMapper.insert(id);
}
}7.controller控制層調用service業務層
package com.example.mybatis;
import java.util.List;
import java.util.Map;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/stumybatis")
public class StuMybatisController {
private static Logger logger = LogManager.getLogger(StuMybatisController.class);
@Autowired
private StuMybatisService stuMybatisService;
@RequestMapping("/list")
public List<Map<String,Object>> getStus(){
logger.info("從數據庫讀取Student集合");
return stuMybatisService.find();
}
@RequestMapping("/add")
public void addStus(){
logger.info("student表中插入數據");
stuMybatisService.insert(2);
}
}最終啟動程序，進行訪問：
http://localhost:8080/stumybatis/list
返回結果：
[{"score_sum":180.0,"name":"張三","id":1,"age":25,"score_avg":90.0},{"score_sum":200.0,"name":"Jim","id":2,"age":33,"score_avg":100.0}]上述內容就是使用Spring Boot如何實現對MyBatis的整合，你們學到知識或技能了嗎？如果還想學到更多技能或者豐富自己的知識儲備，歡迎關注億速云行業資訊頻道。
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