读取一组设备，遇到异常不会中断执行_snmpapi.getalltabledata-优快云博客

本文详细阐述了如何利用线程池技术优化设备资源的获取过程，包括设备节点初始化、线程池构建与任务执行，以及有序关闭线程池的方法。通过合理设置线程数量和超时策略，实现高效、有序地执行资源获取任务，提高系统性能。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

1、使用线程池:

List<NodeDevice> nodeDevices = DBDataService.getInstance() .getNodes(ClientContext.user);

int i = nodeDevices.size();

// 如果没有设备直接返回

if (i == 0)

return newList;

int j = i;

int k = 50;

if (j > k)

{

j = k;

}

// 构造一个线程池

ThreadPoolExecutor threadPool = new ThreadPoolExecutor(j, j, 30L,

TimeUnit.SECONDS, new ArrayBlockingQueue<Runnable>(3),

new ThreadPoolExecutor.DiscardOldestPolicy());

for (NodeDevice nodeDevice : nodeDevices)

{

// 执行给定任务

threadPool.execute(new ThreadPoolTask(nodeDevice, resourceMap,

newList));

}

// 按过去执行已提交任务的顺序发起一个有序的关闭

threadPool.shutdown();

// 基于完成执行给定 Runnable 所调用的方法。

for (boolean bool = false; !(bool); bool = threadPool

.awaitTermination(1L, TimeUnit.SECONDS)) ;

// 线程池执行的任务

public class ThreadPoolTask extends Thread

{

private static final long serialVersionUID = 0;

// 保存任务所需要的数据

private NodeDevice nodeDevice;

private Map<String, List<NodeResourceObject>> resourceMap;

private List<NodeResourceObject> newList;

ThreadPoolTask(NodeDevice nodeDevice,

Map<String, List<NodeResourceObject>> resourceMap,

List<NodeResourceObject> newList)

{

this.nodeDevice = nodeDevice;

this.resourceMap = resourceMap;

this.newList = newList;

}

@Override

public void run()

{

try

{

SNMPTarget target = SNMPTargetTool

.nodeToSNMPConnInfo(nodeDevice);

List<eocCNUUanuthListEntry> uanuthList = SNMPFactory

.getSNMPAPI().getAllTableData(

eocCNUUanuthListEntry.class, target);

List<NodeResourceObject> resources = resourceMap.get(nodeDevice

.getNodeName());

if (uanuthList.size() > 0)

{

for (NodeResourceObject resource : resources)

{

for (int i = 0; i < uanuthList.size(); i++)

{

if (uanuthList.get(i).getEocCNUUnauthListMac() != null

&& resource.getExtendFieldStringB().equals(

uanuthList.get(i)

.getEocCNUUnauthListMac()))

{

isequals = true;

}

if (isequals)

{

newList.add(resource);

}

else

{

NodeResourceObject newObj = new NodeResourceObject();

newObj.setNodeResourceKey(resource

.getNodeResourceKey());

newObj.setNodeName(resource.getNodeName());

newObj.setResourceRSIDValue(resource

.getResourceRSIDValue());

newObj.setExtendFieldStringB(resource

.getExtendFieldStringB());

newObj.setResourceCheckStatus("");

newList.add(newObj);

}

} catch (Exception ex)

{

}

2、接收异常，但不抛出：

for(int i=0;i<num.length;i++)

{

try{

……………..

}catch(Exception)

{

}