动态连接到orientdb

我有一个java应用程序，它使用orientDB API（tinkerprop包）来创建Class并从OrientDB插入和提取数据。数据库正在另一台服务器上运行。动态连接到orientdb

我正在寻找我的应用程序，以防万一orientDB被关闭并且后来出现时，我不需要重新启动我的java应用程序来获得与orientDB的连接。（数据库可用时连接应自动刷新）

我可能在复制设置中有2个节点，但在两个节点都需要重新启动的情况下，我的应用程序也需要重新启动。（都面临着当插入没有发生因法定人数不可到达错误的情况下，最后，需要重新启动两台服务器）

我试着用下面的代码

while(true) 
     { 
      try { 

      OrientGraphFactory factory = new OrientGraphFactory("remote:localhost/testdb", "root", "root").setupPool(1,50);   
     OrientGraphNoTx graph = factory.getNoTx(); 
       Thread.sleep(1*30*1000); 
      } catch (InterruptedException e) { 
       e.printStackTrace(); 
      } 
     }

但是当我关闭终止应用程序orientDB服务器。下面的异常被抛出，当服务器关闭

Exception in thread "main" com.orientechnologies.orient.core.exception.OStorageException: Cannot create a connection to remote server address(es): [127.0.0.1:2424] 
    DB name="testdb" 
    at com.orientechnologies.orient.client.remote.OStorageRemote.openRemoteDatabase(OStorageRemote.java:1960) 
    at com.orientechnologies.orient.client.remote.OStorageRemote.openRemoteDatabase(OStorageRemote.java:1860) 
    at com.orientechnologies.orient.client.remote.OStorageRemote.open(OStorageRemote.java:356) 
    at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.open(ODatabaseDocumentTx.java:258) 
    at com.orientechnologies.orient.core.db.OPartitionedDatabasePool$DatabaseDocumentTxPooled.internalOpen(OPartitionedDatabasePool.java:447) 
    at com.orientechnologies.orient.core.db.OPartitionedDatabasePool.openDatabase(OPartitionedDatabasePool.java:310) 
    at com.orientechnologies.orient.core.db.OPartitionedDatabasePool.acquire(OPartitionedDatabasePool.java:268) 
    at com.tinkerpop.blueprints.impls.orient.OrientBaseGraph.<init>(OrientBaseGraph.java:143) 
    at com.tinkerpop.blueprints.impls.orient.OrientGraphNoTx.<init>(OrientGraphNoTx.java:62) 
    at com.tinkerpop.blueprints.impls.orient.OrientGraphFactory$2.getGraph(OrientGraphFactory.java:116) 
    at com.tinkerpop.blueprints.impls.orient.OrientGraphFactory.getNoTx(OrientGraphFactory.java:240)

来源

2017-04-24 Ayush

你就不能检查服务器的健康和实现循环重新连接以防万一？ –

已经添加了代码给我的问题，我试图检查服务器的健康状态 – Ayush

添加OStorageException到catch块应该够：

while(true) 
    { 
     try { 

     OrientGraphFactory factory = new OrientGraphFactory("remote:localhost/testdb", "root", "root").setupPool(1,50);   
    OrientGraphNoTx graph = factory.getNoTx(); 
      Thread.sleep(1*30*1000); 
     } catch (InterruptedException e) { 
      e.printStackTrace(); 
     } catch (OStorageException e2) { 
      e2.printStackTrace(); 
     } catch(OOfflineNodeException e3){ 
      e3.printStackTrace(); 
     } 

    }

来源

2017-04-26 08:42:46

谢谢@Luigi – Ayush

也com.orientechnologies.common.concur.OOfflineNodeException异常 – Ayush

更新了，谢谢！ –

动态连接到orientdb

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