我有一個WebSocket應用程序，該程序以編程方式注冊了端點，而沒有使用注釋。

相關代碼為：ServerEndpointConfig.Configurator configurator =

(ServerEndpointConfig.Configurator)configuratorClass.newInstance();

ServerEndpointConfig serverEndpointConfig = ServerEndpointConfig.Builder

.create(endpointClass, endpointPath)

.configurator(configurator)

.build();

ServerContainer serverContainer = (ServerContainer)app

.getServletContext()

.getAttribute("javax.websocket.server.ServerContainer");

serverContainer.addEndpoint(serverEndpointConfig);

當我在帶有嵌入式Jetty容器的IDE中運行它時，一切工作正常，其中依賴關系通過Maven在tomcat-websocket和tomcat-websocket-api庫上，但是當我在Tomcat(8.5.5)中部署它，然后嘗試建立WebSocket連接，在瀏覽器的控制臺中出現以下錯誤：WebSocket與“ ws：//127.0.0.1：8080 / echo”的連接失敗：WebSocket握手期間出錯：意外的響應代碼：500

我在Catalina輸出中未記錄任何錯誤或其他信息，并且不確定如何調試此問題。

我需要以編程方式配置端點，因為在編譯時尚不了解許多信息，因此請不要將我指向注釋解決方案。

我已將日志級別設置為FINE，這是相關的代碼段：T.550 FINE [http-nio-IP-Acceptor-0] o.a.tomcat.util.threads.LimitLatch.countUpOrAwait Counting up[http-nio-IP-Acceptor-0] latch=2

T.551 FINE [http-nio-IP-exec-3] o.a.coyote.AbstractProtocol$ConnectionHandler.process Processing socket [o.a.tomcat.util.net.NioChannel@1e87b268:java.nio.channels.SocketChannel[connected local=/192.168.1.17:8080 remote=/192.168.1.17:51259]] with status [OPEN_READ]

T.551 FINE [http-nio-IP-exec-3] o.a.coyote.http11.Http11InputBuffer.parseRequestLine Received [GET /echo HTTP/1.1

Host: 192.168.1.17:8080

Connection: Upgrade

Pragma: no-cache

Cache-Control: no-cache

Upgrade: websocket

Origin: http://192.168.1.17:8080

Sec-WebSocket-Version: 13

User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36

Accept-Encoding: gzip, deflate, sdch

Accept-Language: en-US,en;q=0.8

Cookie: LUCEE_ADMIN_LANG=en; cfid=de1b0016-ad0c-4601-b8ce-ecb47771b9c8; cftoken=0; LUCEE_ADMIN_LASTPAGE=debugging.logs

Sec-WebSocket-Key: Ogg0VPp9O3XZlR8rrgz4Gg==

Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits

]

T.553 FINE [http-nio-IP-exec-3] o.a.tomcat.util.http.Rfc6265CookieProcessor.parseCookieHeader Cookies: Parsing b[]: LUCEE_ADMIN_LANG=en; cfid=de1b0016-ad0c-4601-b8ce-ecb47771b9c8; cftoken=0; LUCEE_ADMIN_LASTPAGE=debugging.logs

T.554 FINE [http-nio-IP-exec-3] o.a.catalina.authenticator.AuthenticatorBase.invoke Security checking request GET /echo

T.554 FINE [http-nio-IP-exec-3] o.a.catalina.realm.RealmBase.findSecurityConstraints No applicable constraints defined

T.554 FINE [http-nio-IP-exec-3] o.a.catalina.authenticator.AuthenticatorBase.invoke Not subject to any constraint

T.561 FINE [http-nio-IP-exec-3] o.a.tomcat.util.http.Parameters.setEncoding Set encoding to ISO-8859-1

T.563 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.loadClass loadClass(o.a.tomcat.util.collections.LocalStrings, false)

T.563 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.loadClass Delegating to parent classloader1 java.net.URLClassLoader@31befd9f

T.563 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.loadClass Searching local repositories

T.563 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.findClass findClass(o.a.tomcat.util.collections.LocalStrings)

T.564 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.findClass --> Returning ClassNotFoundException

T.564 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.getResourceAsStream getResourceAsStream(org/apache/tomcat/util/collections/LocalStrings.properties)

T.564 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.getResourceAsStream Delegating to parent classloader java.net.URLClassLoader@31befd9f

T.565 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.getResourceAsStream Searching local repositories

T.565 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.getResourceAsStream --> Resource not found, returning null

T.566 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.loadClass loadClass(o.a.tomcat.util.collections.LocalStrings_en, false)

T.566 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.loadClass Delegating to parent classloader1 java.net.URLClassLoader@31befd9f

T.567 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.loadClass Searching local repositories

T.567 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.findClass findClass(o.a.tomcat.util.collections.LocalStrings_en)

T.568 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.findClass --> Returning ClassNotFoundException

T.569 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.getResourceAsStream getResourceAsStream(org/apache/tomcat/util/collections/LocalStrings_en.properties)

T.569 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.getResourceAsStream Delegating to parent classloader java.net.URLClassLoader@31befd9f

T.570 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.getResourceAsStream Searching local repositories

T.571 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.getResourceAsStream --> Resource not found, returning null

T.571 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.loadClass loadClass(o.a.tomcat.util.collections.LocalStrings_en_US, false)

T.571 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.loadClass Delegating to parent classloader1 java.net.URLClassLoader@31befd9f

T.572 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.loadClass Searching local repositories

T.572 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.findClass findClass(o.a.tomcat.util.collections.LocalStrings_en_US)

T.573 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.findClass --> Returning ClassNotFoundException

T.573 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.getResourceAsStream getResourceAsStream(org/apache/tomcat/util/collections/LocalStrings_en_US.properties)

T.573 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.getResourceAsStream Delegating to parent classloader java.net.URLClassLoader@31befd9f

T.574 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.getResourceAsStream Searching local repositories

T.574 FINE [http-nio-IP-exec-3] o.a.catalina.loader.WebappClassLoaderBase.getResourceAsStream --> Resource not found, returning null

T.581 FINE [http-nio-IP-exec-3] o.a.coyote.AbstractProcessorLight.process Socket: [o.a.tomcat.util.net.NioEndpoint$NioSocketWrapper@6689cfeb:o.a.tomcat.util.net.NioChannel@1e87b268:java.nio.channels.SocketChannel[connected local=/192.168.1.17:8080 remote=/192.168.1.17:51259]], Status in: [OPEN_READ], State out: [CLOSED]

T.582 FINE [http-nio-IP-exec-3] o.a.tomcat.util.threads.LimitLatch.countDown Counting down[http-nio-IP-exec-3] latch=2

T.114 FINE [http-nio-IP-exec-4] o.a.coyote.AbstractProtocol$ConnectionHandler.process Processing socket [o.a.tomcat.util.net.NioChannel@406eaa39:java.nio.channels.SocketChannel[connected local=/192.168.1.17:8080 remote=/192.168.1.17:51254]] with status [ERROR]

T.115 FINE [http-nio-IP-exec-4] o.a.tomcat.util.threads.LimitLatch.countDown Counting down[http-nio-IP-exec-4] latch=1

總結

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