厨师 Selenium：当我去集线器 ip:4444/wd/hub 时出现奇怪的错误

Question

我得到以下堆栈跟踪：

{ “状态”：13， “价值”： { “类”：“java.lang.NullPointerException”， “堆栈跟踪”： [ { "fileName": "ExternalSessionKey.java", "className": "org.openqa.grid.internal.ExternalSessionKey", "methodName": "fromWebDriverRequest", “行号”：77 }, { "fileName": "WebDriverRequest.java", "className": "org.openqa.grid.web.servlet.handler.WebDriverRequest", “方法名”：“提取会话”， “行号”：62 }, { "fileName": "RequestHandler.java", "className": "org.openqa.grid.web.servlet.handler.RequestHandler", “方法名”：“getSession”， “行号”：237 }, { "fileName": "RequestHandler.java", "className": "org.openqa.grid.web.servlet.handler.RequestHandler", “方法名”：“过程”， “行号”：119 }, { "fileName": "DriverServlet.java", "className": "org.openqa.grid.web.servlet.DriverServlet", “方法名”：“过程”， “行号”：83 }, { "fileName": "DriverServlet.java", "className": "org.openqa.grid.web.servlet.DriverServlet", "方法名": "doGet", “行号”：61 }, { "fileName": "HttpServlet.java", "className": "javax.servlet.http.HttpServlet", “方法名”：“服务”， “行号”：707 }, { "fileName": "HttpServlet.java", "className": "javax.servlet.http.HttpServlet", “方法名”：“服务”， “行号”：820 }, { "fileName": "ServletHolder.java", "className": "org.seleniumhq.jetty7.servlet.ServletHolder", “方法名”：“句柄”， “行号”：565 }, { "fileName": "ServletHandler.java", "className": "org.seleniumhq.jetty7.servlet.ServletHandler", "方法名": "doHandle", “行号”：479 }, { "fileName": "SessionHandler.java", "className": "org.seleniumhq.jetty7.server.session.SessionHandler", "方法名": "doHandle", “行号”：225 }, { "fileName": "ContextHandler.java", "className": "org.seleniumhq.jetty7.server.handler.ContextHandler", "方法名": "doHandle", “行号”：1031 }, { "fileName": "ServletHandler.java", "className": "org.seleniumhq.jetty7.servlet.ServletHandler", "methodName": "doScope", “行号”：406 }, { "fileName": "SessionHandler.java", "className": "org.seleniumhq.jetty7.server.session.SessionHandler", "methodName": "doScope", “行号”：186 }, { "fileName": "ContextHandler.java", "className": "org.seleniumhq.jetty7.server.handler.ContextHandler", "methodName": "doScope", “行号”：965 }, { "fileName": "ScopedHandler.java", "className": "org.seleniumhq.jetty7.server.handler.ScopedHandler", “方法名”：“句柄”， “行号”：117 }, { "fileName": "HandlerWrapper.java", "className": "org.seleniumhq.jetty7.server.handler.HandlerWrapper", “方法名”：“句柄”， “行号”：111 }, { "fileName": "Server.java", "className": "org.seleniumhq.jetty7.server.Server", “方法名”：“句柄”， “行号”：349 }, { "fileName": "AbstractHttpConnection.java", "className": "org.seleniumhq.jetty7.server.AbstractHttpConnection", "methodName": "handleRequest", “行号”：452 }, { "fileName": "BlockingHttpConnection.java", "className": "org.seleniumhq.jetty7.server.BlockingHttpConnection", "methodName": "handleRequest", “行号”：47 }, { "fileName": "AbstractHttpConnection.java", "className": "org.seleniumhq.jetty7.server.AbstractHttpConnection", "methodName": "headerComplete", “行号”：884 }, { "fileName": "AbstractHttpConnection.java", "className": "org.seleniumhq.jetty7.server.AbstractHttpConnection$RequestHandler", "methodName": "headerComplete", “行号”：938 }, { "fileName": "HttpParser.java", "className": "org.seleniumhq.jetty7.http.HttpParser", "methodName": "parseNext", “行号”：634 }, { "fileName": "HttpParser.java", "className": "org.seleniumhq.jetty7.http.HttpParser", "methodName": "parseAvailable", “行号”：230 }, { "fileName": "BlockingHttpConnection.java", "className": "org.seleniumhq.jetty7.server.BlockingHttpConnection", “方法名”：“句柄”， “行号”：66 }, { "fileName": "SocketConnector.java", "className": "org.seleniumhq.jetty7.server.bio.SocketConnector$ConnectorEndPoint", “方法名”：“运行”， “行号”：254 }, { "fileName": "QueuedThreadPool.java", "className": "org.seleniumhq.jetty7.util.thread.QueuedThreadPool", "methodName": "runJob", “行号”：599 }, { "fileName": "QueuedThreadPool.java", "className": "org.seleniumhq.jetty7.util.thread.QueuedThreadPool$3", “方法名”：“运行”， “行号”：534 }, { "fileName": "Thread.java", "className": "java.lang.Thread", “方法名”：“运行”， “行号”：745 } ] } }

你见过这样的错误吗？

由于日志文件中没有任何内容，您知道如何解决此问题吗？

Answer 1

经过一些研究，这似乎是预期的行为，不应该影响测试：

https://github.com/nicegraham/selenium-grid2-api/blob/master/README.md#wdhub