dubbo会把注册的信息储存在文件中，然后缓存在本地，但是储存文件的命名中拼入了ip和端口这样文件名就有一个冒，在持久化的时候就直接报文件路径无效的错误

Question

09:31:59,965  WARN ZookeeperRegistry:191 -  [DUBBO] Failed to save registry store file, cause: Invalid file path, dubbo version: 2.6.0, current host: 127.0.0.1
java.io.IOException: Invalid file path
    at java.io.File.createNewFile(File.java:1021)
    at com.alibaba.dubbo.registry.support.AbstractRegistry.doSaveProperties(AbstractRegistry.java:155)
    at com.alibaba.dubbo.registry.support.AbstractRegistry$SaveProperties.run(AbstractRegistry.java:497)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:750)

```

Answer 1

dubbo:registry 可以指定file属性，指定本地文件缓存的文件名