1.MXBean already registered with name com.github.tobato.fastdfs.conn:type=FdfsConnectionPoolfdfsPool
解决方案：
启动类上加注解
@EnableMBeanExport(registration = RegistrationPolicy.IGNORE_EXISTING)
2.Ribbon：Request URI does not contain a valid hostname
解决方案：
注册的服务名不能带有下划线：否则会报异常。
3.illegalArgumentException
一般是 实体类中的数据类型与数据库不匹配 日期/钱
4.javax.net.ssl.SSLException: Unsupported record version Unknown-0.0
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
解决：将jdbc配置文件中设置：useSSL=false
5. KeeperErrorCode = ConnectionLoss for /dubbo
解决：VM options：-Dproject.env=pressure
6."ERROR" dispatch for POST "/error", parameters={masked}
@PostMapping || 请求参数接受错误
