java - 是否可以手动检查 LocateRegistry 是否存在？

Question

我have found获取 LocateRegistry 的安全方法(即使注册表尚不存在)。

Registry registry = null;
try {
    registry = LocateRegistry.getRegistry(52365);
    registry.list();
    // This call will throw an exception if the registry does not already exist
}
catch (RemoteException e) { 
    registry = LocateRegistry.createRegistry(52365);
}

是否可以先检查注册表是否存在，然后根据检查结果使用getRegistry或createRegistry？

Answer 1

Is it possible to firstly check registry existence and use getRegistry or createRegistry in accordance with the result of the check?

当然。只需先尝试 createRegistry()；捕获 ExportException，这意味着它已经在运行，并无条件地执行 getRegistry()。

I want avoid unnecessary calling of getRegistry when it doesn't exist

这不是一个有效的问题。这是一个几乎免费的电话。没有网络 Activity 。