折腾了我两天的springboot数据源datasource循环依赖问题，都被搞疯掉了

在做项目重构的时候增加了两个功能

　　1、多数据源。

　　2、token的验证从以前的数据库验证，移到了redis端。

1、多数据源使用 druid-spring-boot-starter 套件

　　其核心代码如下

　　

@Configuration
public class DynamicDataSourceConfig {

    @Bean
    @ConfigurationProperties ( "spring.datasource.druid.first" )
    public DataSource firstDataSource(){
        return DruidDataSourceBuilder.create().build();
    }

    @Bean
    @ConfigurationProperties ( "spring.datasource.druid.second" )
    public DataSource secondDataSource(){
        return DruidDataSourceBuilder.create().build();
    }

    @Bean
    @Primary
    public DynamicDataSource dataSource(DataSource firstDataSource, DataSource secondDataSource) {
        Map targetDataSources = new HashMap<>();
        //targetDataSources.put(DataSourceContext.FIRST, firstDataSource);
        targetDataSources.put(DataSourceContext.SECOND, secondDataSource);
        return new DynamicDataSource(firstDataSource, targetDataSources);
    }
}

　　2、token验证规则使用spring-shiro，核心代码如下

@Component
public class OAuth2Realm extends AuthorizingRealm {
//    @Autowired
//    private ShiroService shiroService;
    @Autowired
    private RedisTokenManager redisTokenManager;
    @Override
    public boolean supports(AuthenticationToken token) {
        return token instanceof OAuth2Token;
    }

    /**
     * 授权(验证权限时调用)
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
//        SysUserEntity user = (SysUserEntity)principals.getPrimaryPrincipal();
//        Long userId = user.getUserId();
//
//        //用户权限列表
//        Set permsSet = shiroService.getUserPermissions(userId);
//
//        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
//        info.setStringPermissions(permsSet);
//        return info;
        return null ;
    }

    /**
     * 认证(登录时调用)
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        String accessToken = (String) token.getPrincipal();
//        UsernamePasswordToken up = (UsernamePasswordToken) token;
        //根据accessToken，查询用户信息
        TokenModel tokenEntity = redisTokenManager.getToken(accessToken);
        //token失效
        if (tokenEntity == null ){
            throw new IncorrectCredentialsException( "token失效，请重新登录" );
        }
        SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(tokenEntity.getUserId(), accessToken, getName());
        return info;
//        if(tokenEntity.getType()==null||
//          Integer.valueOf(tokenEntity.getType()).equals(Constant.LoginUserType.CUSTOM.getValue())){
//          //查询用户信息
//            SysUserEntity user = shiroService.queryUser(tokenEntity.getUserId());
//            //账号锁定
//            if(user.getStatus() == 0){
//                throw new LockedAccountException("账号已被锁定,请联系管理员");
//            }
//            SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(user, accessToken, getName());
//            return info;
//        }else{
//          //查询用户信息
//            SysUserEntity user = shiroService.queryUser(tokenEntity.getUserId());
//            //账号锁定
//            if(user.getStatus() == 0){
//                throw new LockedAccountException("账号已被锁定,请联系管理员");
//            }
//            SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(user, accessToken, getName());
//            return info;
//        }



    }

}

 然后启动项目，就出现datasource循环依赖的问题。

 

The dependencies of some of the beans in the application context form a cycle:

evaluationCarService (field private io.yeliang.business.dao.EvaluationCarDao io.yeliang.business.service.impl.EvaluationCarServiceImpl.evaluationCarDao)
↓
evaluationCarDao defined in file [D:\workspace\tmxc-parent\tmxc-order-service\target\classes\io\yeliang\business\dao\EvaluationCarDao.class]
↓
sqlSessionFactory defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]
┌─────┐
| dataSource defined in class path resource [io/yeliang/dynamicdatasource/DynamicDataSourceConfig.class]
↑ ↓
| firstDataSource defined in class path resource [io/yeliang/dynamicdatasource/DynamicDataSourceConfig.class]
↑ ↓
| dataSourceInitializer
└─────┘

 

过程就不过了，痛苦。

。

。

。

。

。

。

结论是把

@Component
public class OAuth2Realm extends AuthorizingRealm {
//    @Autowired
//    private ShiroService shiroService;中这两行的注解打开就行。或随便找个service注册都行。目的是让datasource提前注册到spring容器。这个肯定不是好办法，先这样吧。受不了了。记录一下。

有更好的办法，欢迎留言。谢谢

 

转载于:https://www.cnblogs.com/jpfss/p/8295623.html