Dynamic Datasource_dynamic-datasource

Dynamic-Datasource是一款动态数据源的轻量级实现，封装成Spring Starter方式引入，支持Mybatis、MybatisPlus读写分离，支持通过注解动态切换切换数据源。

@DS：指定使用数据库跟配置文件中配置的对应，可以注解在方法上和类上，同时存在方法注解优先于类上注解,强烈建议注解在service实现或mapper接口方法上。

依赖

<dependency>
  <groupId>com.baomidou</groupId>
  <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
  <version>版本号</version>
</dependency>

配置文件，两个数据源，mysql和pgsql，三个库text、cca、gene_text

server:
  port: 8081
  address: 127.0.0.1
 
spring:
  application:
    name: template
  datasource:
    dynamic:
      # 默认数据库
      primary: master
      # 严格匹配数据源,默认false. true未匹配到指定数据源时抛异常
      strict: true
      datasource:
        text:
          url: jdbc:mysql://127.0.0.1:3306/text?characterEncoding=UTF-8&serverTimezone=GMT%2B8
          username: root
          password: 123456
          driver-class-name: com.mysql.cj.jdbc.Driver
        cca:
          url: jdbc:mysql://127.0.0.1:3306/cca?characterEncoding=UTF-8&serverTimezone=GMT%2B8
          username: root
          password: 123456
          driver-class-name: com.mysql.cj.jdbc.Driver
        geneText:
          url: jdbc:postgresql://127.0.0.1:5432/gene_text
          username: postgres
          password: postgres
          driver-class-name: org.postgresql.Driver
 
mybatis-plus:
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
  mapper-locations: classpath:**/mapper/*.xml

text库中user表

@Data
@TableName("user")
public class User {
 
    @TableId
    private Integer uId;
 
    private String uName;
 
    private Integer uAge;
 
    private LocalDateTime uBirthDay;
 
    private Integer dId;
 
    private LocalDateTime createTime;
 
    private LocalDateTime updateTime;
}

Mapper

@DS("text")
@Mapper
public interface UserMapper extends BaseMapper<User> {}

cca库中的config表

@Data
@TableName("config")
public class Config {
 
    @TableId
    private Integer configId;
 
    private String configName;
 
    private String configKey;
    
    private String configValue;
    
    private LocalDateTime createTime;
    
    private LocalDateTime updateTime;
 
}

Mapper

@DS("cca")
@Mapper
public interface ConfigMapper extends BaseMapper<Config> {}

 gene_text库中的call表

@Data
@TableName("call")
public class Call {
 
    @TableId
    private String partyId;
 
    private String dn;
 
    private String keyName;
 
    private String value;
 
    private LocalDateTime createTime;
 
}

Mapper

@DS("geneText")
@Mapper
public interface CallMapper extends BaseMapper<Call> {}

 使用，查询text库中的user表

@RestController
@RequestMapping("/template")
public class TemplateController extends BaseController{
 
    @Autowired
    private UserServiceImpl userService;
 
    @PostMapping("/queryTemplate")
    public ResponseResult queryTemplate(@RequestBody QueryReq queryReq) {
        return success(userService.queryTemplate(queryReq));
    }
}

@Service
public class UserServiceImpl implements UserService {
 
    @Autowired
    private UserMapper userMapper;
 
    @Override
    public Page<User> queryTemplate(QueryReq queryReq) {
        // 分页设置
        Page<User> userPage = Page.of(1, 10);
 
        // 查询条件设置
        QueryWrapper<User> queryWrapper = new QueryWrapper<>();
        if (StrUtil.isNotBlank(queryReq.getName())) {
            queryWrapper.eq("u_name", queryReq.getName());
        }
        if (queryReq.getAge() != null) {
            queryWrapper.eq("u_age", queryReq.getAge());
        }
        if (queryReq.getCreateTime() != null && queryReq.getEndTime() != null) {
            queryWrapper.between("u_birth_day", queryReq.getCreateTime(), queryReq.getEndTime());
        }
 
        return userMapper.selectPage(userPage, queryWrapper);
    }
}

测试

查询geneText库call表

@RestController
@RequestMapping("/template")
public class TemplateController extends BaseController{
 
    @Autowired
    private CallServiceImpl callService;
 
    @GetMapping("/query")
    public ResponseResult query() {
        return success(callService.queryTemplate());
    }
 
}

@Service
public class CallServiceImpl implements CallService {
 
    @Autowired
    private CallMapper callMapper;
 
    @Override
    public Page<Call> queryTemplate() {
        // 分页设置
        Page<Call> callPage = Page.of(1, 10);
 
        // 查询条件设置
        QueryWrapper<Call> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("dn", "6001");
 
        return callMapper.selectPage(callPage, queryWrapper);
    }
}

测试