AWS错误信息:InvalidInstanceID。NotFound

我想开一家亚马逊EC2云机[startinstance] [2]方法使用Java中的aws-sdk。我的代码如下。

公共字符串startInstance(字符串instanceId)抛出异常{List instanceIds =新ArrayList <字符串> ();instanceIds.add (instanceId);StartInstancesRequest startRequest =新StartInstancesRequest (instanceIds);startRequest.setRequestCredentials (getCredentials ());StartInstancesResult startreresult = ec2.startInstances(startRequest);List< instanceatechange > stateChangeList = startResult .getStartingInstances();log.trace (“从实例开始“{}”:“, instanceId);//等待实例被启动返回waitForTransitionCompletion (stateChangeList“运行”, instanceId);｝

当我运行上面的代码，我得到以下AWS错误:

状态码:400， AWS请求ID: e1bd4795-a609-44d1-9 e80-43611e80006b, AWS错误代码:无效instanceid。NotFound, AWS错误信息:实例ID“i-2b97ac 2 f”在com.amazonaws.http.AmazonHttpClient不存在。handleErrorResponse (AmazonHttpCli ent.java:538)在com.amazonaws.http.AmazonHttpClient.executeHelper (AmazonHttpClient。ja弗吉尼亚州:283)在com.amazonaws.http.AmazonHttpClient.execute (AmazonHttpClient.java:168)在com.amazonaws.services.ec2.AmazonEC2Client.invoke (AmazonEC2Client。jav答:5208在com.amazonaws.services.ec2.AmazonEC2Client)。startInstances (AmazonEC2Cl ient.java:2426）