以编程方式设置SpringBoot数据源

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
</dependency>

spring.datasource.url=jdbc:mysql://localhost:3306/mydatabase
spring.datasource.username=root
spring.datasource.password=secret
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.sql.DataSource;

@Configuration
public class DataSourceConfig {

    @Bean
    public DataSource dataSource() {
        return DataSourceBuilder.create()
                .url("jdbc:mysql://localhost:3306/mydatabase")
                .username("root")
                .password("secret")
                .driverClassName("com.mysql.jdbc.Driver")
                .build();
    }
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import javax.sql.DataSource;

@Service
public class MyService {

    private final DataSource dataSource;

    @Autowired
    public MyService(DataSource dataSource) {
        this.dataSource = dataSource;
    }

    // 使用数据源执行数据库操作
    // ...
}