pom文件增加依赖
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.0.0</version>
</dependency>
<!--数据库连接池-->
<dependency>
<groupId>com.zaxxer</groupId>
<artifactId>HikariCP</artifactId>
</dependency>
1、首先在application.yml文件加入数据源连接信息以及mybatis的别名扫描包和mapper.xml映射文件路径。
2、在resource新建mappers文件夹
3、新建com.datasource包，加入JdbcProperties类和JdbcConfig类
4、启动类加入@MapperScan("com.rshare.mapper") 扫描mapper接口
mapper接口
对应的xml文件：
package com.datasource;
import org.springframework.boot.context.properties.ConfigurationProperties;
/**
* @author 这是一个jdbc配置类
* prefix yml 里面的前缀 他会自动寻找位置并且赋值
*/
@ConfigurationProperties(prefix = "jdbc")
public class JdbcProperties {
private String url;
private String driverClassName;
private String username;
private String password;
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getDriverClassName() {
return driverClassName;
}
public void setDriverClassName(String driverClassName) {
this.driverClassName = driverClassName;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
package com.datasource;
import com.zaxxer.hikari.HikariDataSource;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.sql.DataSource;
/**
* @author 数据源配置类
*/
@Configuration
@EnableConfigurationProperties(JdbcProperties.class)
public class JdbcConfig {
@Bean
public DataSource getDataSource(JdbcProperties jdbc){
HikariDataSource dataSource = new HikariDataSource();
dataSource.setJdbcUrl(jdbc.getUrl());
dataSource.setDriverClassName(jdbc.getDriverClassName());
dataSource.setUsername(jdbc.getUsername());
dataSource.setPassword(jdbc.getPassword());
return dataSource;
}
}
