Tomcat在未部署时抛出严重警告。

Question

Tomcat版本: 7.0.41 (也尝试了8.0.32)

JRE: 6u42

编写了一个非常简单的JAX应用程序(作为测试)。当使用"? wsdl“时，当给出SOAP请求时，应用程序只显示wsdl文件，只返回一个字符串。

@WebService
public class SOAPWithWS
{
    @WebMethod
    public String HelloTest(String sMessage)
    {
        return "Received : " + sMessage;
    }
}

当我试图取消部署上下文时，它会给我一个警告，如下所示：

Mar 09, 2016 1:54:24 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/WS] created a ThreadLocal with key of type [com.sun.xml.bind.v2.runtime.Coordinator$1] (value [com.sun.xml.bind.v2.runtime.Coordinator$1@3e26faf2]) and a value of type [java.lang.Object[]] (value [[Ljava.lang.Object;@712545be]) 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.
Mar 09, 2016 1:54:24 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/WS] created a ThreadLocal with key of type [com.sun.xml.bind.v2.ClassFactory$1] (value [com.sun.xml.bind.v2.ClassFactory$1@4605f6fa]) and a value of type [java.util.WeakHashMap] (value [{class com.sun.xml.ws.runtime.config.TubelineDefinition=java.lang.ref.WeakReference@3199bb00, class com.sun.xml.ws.runtime.config.TubeFactoryConfig=java.lang.ref.WeakReference@63c41670, class javax.xml.bind.annotation.adapters.CollapsedStringAdapter=java.lang.ref.WeakReference@5e9d463b, class com.sun.xml.ws.runtime.config.Tubelines=java.lang.ref.WeakReference@276dfc04, class javax.xml.bind.annotation.W3CDomHandler=java.lang.ref.WeakReference@25bc7ed5, class java.util.ArrayList=java.lang.ref.WeakReference@7a2ae54d, class com.sun.xml.ws.runtime.config.MetroConfig=java.lang.ref.WeakReference@163460e4, class com.sun.xml.ws.runtime.config.TubeFactoryList=java.lang.ref.WeakReference@48c5241f}]) 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.
Mar 09, 2016 1:54:24 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/WS] created a ThreadLocal with key of type [org.glassfish.gmbal.generic.OperationTracer$1] (value [org.glassfish.gmbal.generic.OperationTracer$1@6c6948c]) and a value of type [java.util.ArrayList] (value [[]]) 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.

每次我测试时都会发生这种事。同样的情况在GlassFish服务器上没有发生(只是尝试测试这个场景)。知道发生了什么事，以及如何消除这个问题吗？

Answer 1

当将JAX实现添加为相应项目的库时，将显示此警告。

与其将JAX实现添加到项目中，不如将其添加到Tomcat本身的库列表中。在Linux上，如果Tomcat安装在/usr/java/Tomcat-7中，那么JAX库必须包含在/usr/java/Tomcat-7/lib/中。

如果不想直接将库添加到Tomcat中，那么确保在上下文未部署时完全重新启动Tomcat。如果每次在上下文未部署时重新启动Tomcat，则可以安全地忽略警告。

Answer 2

您的应用程序中有内存泄漏。检查这个话题，可能会有帮助；

What are these warnings in catalina.out?