初步：我在SO上寻找类似的问题，与我最相似的是：Unable to shut down neo4j jetty server within tomcat。我已经尝试了那里提出的所有解决方案但没有成功。
在Tomcat上运行带有嵌入式Neo4j数据库的Jersey应用程序时，我遇到了关机问题。部署（使用Maven 3.3.9）工作正常并且数据库已启动，但在重新部署/取消部署时，我收到Tomcat警告：
21-Feb-2017 17:37:10.242 WARNING [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [mytest] appears to have started a thread named [pool-17-thread-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)
21-Feb-2017 17:37:10.242 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@2c930a78]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@4c0b4554]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.242 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@1c3e6e38]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@3f71b23c]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.242 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@b05bf60]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@1d326ab1]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.242 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@72929881]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@40c024bd]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.242 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@66987d7a]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@68f1f4fa]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.242 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@e413ff5]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@4f65074c]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.242 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@6ab3d077]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@d02bfff]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.242 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@a3b973d]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@6d03be51]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.243 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@1947fbee]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@1a2527e]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.243 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@5776bf08]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@27776281]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.243 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@149750a]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@12ebf6ff]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.243 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@70078555]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@6cf882be]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.243 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@26d35b0e]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@6bc20d25]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.243 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@27a30025]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@f669b1d]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.243 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@33d1bad4]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@480122ae]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.243 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@779cb1a3]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@4c19623e]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.243 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@72206673]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@33f53ecb]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.243 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@21f680bf]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@26f91e2d]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.243 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@571bf77f]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@4d828831]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.243 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@58e40a46]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@36026f01]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.243 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@3eaac6b1]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@67300255]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.244 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@1f7e82cf]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@3a218c46]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.244 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@52d64afd]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@3513d858]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.244 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@5e104ccf]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@68e5b8f7]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.244 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@80486b4]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@237e5ef4]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.244 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@7fd41860]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@3a33256d]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.244 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@16ae35b9]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@47f65066]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.244 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@18be57e0]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@3b0501d7]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.244 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.io.pagecache.impl.muninn.CursorPool] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool@5ce1e8f3]) and a value of type [org.neo4j.io.pagecache.impl.muninn.CursorPool.CursorSets] (value [org.neo4j.io.pagecache.impl.muninn.CursorPool$CursorSets@2961f669]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.244 SEVERE [http-nio-8080-exec-6] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [mytest] created a ThreadLocal with key of type [org.neo4j.collection.pool.MarshlandPool$1] (value [org.neo4j.collection.pool.MarshlandPool$1@438ab5f2]) and a value of type [org.neo4j.collection.pool.MarshlandPool.LocalSlot] (value [org.neo4j.collection.pool.MarshlandPool$LocalSlot@50120fed]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
21-Feb-2017 17:37:10.762 INFO [http-nio-8080-exec-6] org.apache.catalina.startup.HostConfig.undeploy Undeploying context [/mytest]
我已经读过这个警告不一定是个问题，但是对于我的应用程序来说这会引起一个真正的问题，因为我需要通过远程shell访问嵌入式Neo4j DB（我使用的是端口5555）。如果我将嵌入式数据库配置为在端口5555上启用远程shell，则在关闭时，线程池错误会导致与端口5555的连接保持活动状态。我只能通过关闭tomcat并重新启动来重新部署。
我创建了一个只启动和停止Neo4j嵌入式数据库的简单版本，它显示了同样的问题（以确保它不是挂起的数据库事务）并将代码放在GitHub上：https://github.com/marijnkoolen/java-jersey-neo4j-test以防万一想检查一下他们是否可以复制这个。如果我不启动嵌入式数据库，则没有线程池问题，因此Jersey和Neo4J之间的交互出现了问题。我对Jersey和嵌入式数据库不是很有经验，所以我很可能做一些愚蠢的事情。
为便于阅读，以下是相关的代码段。
TestApplication.java：
package org.mytest;
import javax.ws.rs.core.Application;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import java.util.HashSet;
import java.util.Set;
import java.io.File;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.factory.GraphDatabaseFactory;
import org.neo4j.shell.shellSettings;
/**
* Created by marijn on 16-2-17.
*/
public class TestApplication extends Application {
File db_location = new File("/data/tagaid/neo4jdb");
GraphDatabaseService db;
public Set> getClasses() {
Set> s = new HashSet>();
s.add(HelloWorldService.class);
return s;
}
@PostConstruct
public void initialize() {
try {
db = new GraphDatabaseFactory().newEmbeddedDatabaseBuilder(db_location)
.setConfig(shellSettings.remote_shell_enabled, "true")
.setConfig(shellSettings.remote_shell_port, 5555)
.newGraphDatabase();
System.out.println("Neo4j startup succeeded"); // logged in tomcat catalina.out
} catch (Exception e) {
e.printStackTrace();
System.out.println("Neo4j startup failed"); // logged in tomcat catalina.out
}
}
@PreDestroy
public void cleanUp() {
try {
db.shutdown();
System.out.println("Neo4j shutdown succeeded"); // logged in tomcat catalina.out
} catch (Exception e) {
e.printStackTrace();
System.out.println("Neo4j shutdown failed!"); // logged in tomcat catalina.out
}
db = null; // should not be necessary
}
}
的web.xml：
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>Archetype Created Web Application</display-name>
<servlet>
<servlet-name>jersey-servlet</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>com.marijn.jerseytest</param-value>
</init-param>
<init-param>
<param-name>javax.ws.rs.Application</param-name>
<param-value>org.mytest.TestApplication</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>jersey-servlet</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>
的pom.xml：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.mytest</groupId>
<artifactId>org.mytest</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>org.mytest Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>se.jiderhamn</groupId>
<artifactId>classloader-leak-prevention</artifactId>
<scope>runtime</scope>
<version>1.15.4</version>
<exclusions>
<exclusion>
<artifactId>servlet-api</artifactId>
<groupId>javax.servlet</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-server</artifactId>
<version>2.22.1</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet-core</artifactId>
<version>2.22.1</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.test-framework.providers</groupId>
<artifactId>jersey-test-framework-provider-jdk-http</artifactId>
<version>2.22.1</version>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.0</version>
</dependency>
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j</artifactId>
<version>3.1.1</version>
</dependency>
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-io</artifactId>
<version>3.1.1</version>
</dependency>
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-kernel</artifactId>
<version>3.1.1</version>
</dependency>
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-shell</artifactId>
<version>3.1.1</version>
</dependency>
</dependencies>
<build>
<finalName>org.mytest</finalName>
<plugins>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<url>http://localhost:8080/manager/text</url>
<server>UnixTomcatServer</server>
<path>/mytest</path>
</configuration>
</plugin>
</plugins>
</build>
</project>
在catalina.out日志中，我可以看到调用@PostConstruct和@PreDestroy函数并执行关闭。然后记录线程池警告。我已经尝试过针对类似问题（https://github.com/Neo4j/Neo4j/issues/1070）建议的JVMHelper，它会杀死许多线程并处理ThreadLocal错误，但不会解决线程池问题。
设定：
在原始应用程序中测试：
在这里报道的简单应用中：
任何帮助将不胜感激。
非常感谢，
Marijn
更新2017-03-02 我已更新到Tomcat 9并将远程shell连接添加到上面的应用程序代码中。在我做的GitHub回购中，我添加了一个简单的单元测试，如@jerome-b所示，表明远程shell端口在关闭时没有释放。