如何手动中断ajax,如何正确中断JAX-RS AJAX请求

「爱情、让人受尽委屈。」 2022-09-03 06:17 100阅读 0赞

我有一个部署到JBoss 7.1.1.Final的Java EE应用程序.该应用程序利用JAX-RS为客户端提供REST服务.其中一个服务保持客户端连接,直到通过a接收响应对象BlockingQueue.到目前为止,这似乎工作正常.但是,即使删除了应用程序部署/关闭了应用程序,连接也会保持打开状态.它甚至可以阻止JBoss关闭.

所以我试图通过@PreDestroy回调中断等待线程来执行干净关闭.该服务看起来像这样:

@Path("/mypath")

@SessionScoped

public class MyResource implements Serializable \{

private static final long serialVersionUID = 1L;

@Inject

private EntityManager em;

private Thread thread = null;

@GET

@Path("/\{id:\[0-9\]\[0-9\]\*\}")

@Produces(\{

MediaType.TEXT\_PLAIN,

MediaType.TEXT\_XML

\})

public Response getObjects(@PathParam("id") long id) \{

MyGroup group = this.em.find(MyGroup.class, id);

if (group == null) \{

return Response.status(Status.NOT\_FOUND)

.entity("Group not found\\n")

.build();

if (group.isEmpty()) \{

return Response.status(Status.PRECONDITION\_FAILED)

.entity("Group is empty\\n")

.build();

BlockingQueue> queue = ... // Get queue for group

this.thread = Thread.currentThread();

try \{

MyObject object = queue.take();

\} catch (InterruptedException e) \{

return Response.noContent().build();

return Response.ok(object)

.type(MediaType.TEXT\_XML)

.build();

@PreDestroy

public void shutdown() \{

if (this.thread != null) \{

this.thread.interrupt();

它似乎有效,有点......客户收到预期的响应.但是,JBoss打印此异常:

13:38:44,489 ERROR \[org.jboss.as.txn\] JBAS010151: Unable to get transaction state: java.lang.IllegalStateException

at org.jboss.msc.value.InjectedValue.getValue(InjectedValue.java:47)

at org.jboss.as.txn.deployment.TransactionRollbackSetupAction.teardown(TransactionRollbackSetupAction.java:43)

at org.jboss.as.web.ThreadSetupBindingListener.unbind(ThreadSetupBindingListener.java:61) \[jboss-as-web-7.1.1.Final.jar:7.1.1.Final\]

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:195) \[jbossweb-7.0.13.Final.jar:\]

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) \[jbossweb-7.0.13.Final.jar:\]

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) \[jbossweb-7.0.13.Final.jar:\]

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) \[jbossweb-7.0.13.Final.jar:\]

at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) \[jbossweb-7.0.13.Final.jar:\]

at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) \[jbossweb-7.0.13.Final.jar:\]

at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) \[jbossweb-7.0.13.Final.jar:\]

at java.lang.Thread.run(Thread.java:636) \[rt.jar:1.6.0\_18\]

13:38:44,492 ERROR \[org.apache.catalina.connector.CoyoteAdapter\] An exception or error occurred in the container during the request processing: java.lang.RuntimeException: java.lang.IllegalStateException

at org.jboss.as.web.ThreadSetupBindingListener.unbind(ThreadSetupBindingListener.java:67) \[jboss-as-web-7.1.1.Final.jar:7.1.1.Final\]