根据配置文件刷新spingboot项目内存数据库配置

1：根据配置文件刷新spingboot项目内存数据库配置实例：

@Slf4j
@Configuration
@RefreshScope
@Data
public class DruidConfiguration {
    @Value("${spring.datasource.url}")
    private String dbUrl;
    @Value("${spring.datasource.username}")
    private String username;
    @Value("${spring.datasource.password}")
    private String password;
    @Value("${spring.datasource.driver-class-name}")
    private String driverClassName;
   

    @Bean
    @RefreshScope
    public DruidDataSource dataSource() {
        DruidDataSource datasource = new DruidDataSource();
        datasource.setUrl(this.dbUrl);
        datasource.setDriverClassName(this.driverClassName);
        datasource.setUsername(this.username);
        datasource.setPassword(this.password);
        return datasource;
    }

    @Bean
    @RefreshScope
    public DruidDataSource dataSource(String username, String password) {
        DruidDataSource datasource = new DruidDataSource();
        datasource.setUrl(this.dbUrl);
        datasource.setDriverClassName(this.driverClassName);
        datasource.setUsername(username);
        datasource.setPassword(password);
        return datasource;
    }
}

2：带参数的dataSource函数，可支持手动调用接口方式动态刷新内存数据库配置，保证项目无缝切换数据库配置：

@RestController
@RequestMapping("/switch")
@Slf4j
@RequiredArgsConstructor
public class SwitchController {

    private final DruidConfiguration druidConfiguration;

    /**
     * 切换账号
     * @param dto
     * @return
     */
    @PostMapping(value = "/switchAccount", produces = {"application/json;charset=UTF-8"})
    @ApiOperation(value="切换数据库账户",notes="切换数据库账户")
    public Result switchAccount(@RequestBody SwitchAccountDto dto) {
        druidConfiguration.dataSource(dto.getUsername(), dto.getPassword());
        return Result.ok();
    }
}