Selenium 2とOperaDriver：java.net.BindException

Question

https://github.com/operasoftware/operadriver/からOperaDriverをダウンロードしてシンプル/ Example.javaを実行しようとしました しかし、私はいつも例外 "java.net.BindException：Address already in use"を取得していますか？ このBindExceptionがどのように発生する可能性があるのですか？どのポートがすでに占有されているかをどのようにして知ることができますか？スタックトレースには印刷されませんか？ OperaDriverはデフォルトでどこで実行されますか？ここで

は、完全なスタックトレースです：

Jun 29, 2011 10:35:16 AM com.opera.core.systems.OperaDriver <init> 
SEVERE: Error initializing OperaDriver with exception 
org.openqa.selenium.WebDriverException: java.net.BindException: Address already in use 
Build info: version: '2.0rc3', revision: '12536', time: '2011-06-20 18:19:52' 
System info: os.name: 'Linux', os.arch: 'i386', os.version: '2.6.34.8-0.2-desktop', java.version: '1.6.0_24' 
Driver info: driver.version: OperaDriver 
    at com.opera.core.systems.OperaDriver.createScopeServices(OperaDriver.java:233) 
    at com.opera.core.systems.OperaDriver.init(OperaDriver.java:192) 
    at com.opera.core.systems.OperaDriver.<init>(OperaDriver.java:147) 
    at com.opera.core.systems.OperaDriver.<init>(OperaDriver.java:105) 
    at ch.adnovum.wci.test.common.DriverFactory.getDriver(DriverFactory.java:132) 
    at ch.adnovum.wci.test.web.UpAndRunningTest.testCustomerAppOpera(UpAndRunningTest.java:62) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) 
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) 
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) 
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) 
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76) 
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) 
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) 
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) 
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) 
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) 
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) 
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236) 
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49) 
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) 
Caused by: java.net.BindException: Address already in use 
    at sun.nio.ch.Net.bind(Native Method) 
    at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:126) 
    at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:59) 
    at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:52) 
    at com.opera.core.systems.scope.stp.StpConnectionListener.start(StpConnectionListener.java:80) 
    at com.opera.core.systems.scope.stp.StpConnectionListener.<init>(StpConnectionListener.java:53) 
    at com.opera.core.systems.scope.stp.StpThread.<init>(StpThread.java:44) 
    at com.opera.core.systems.ScopeServices.<init>(ScopeServices.java:175) 
    at com.opera.core.systems.OperaDriver.createScopeServices(OperaDriver.java:230) 
    ... 27 more 

Answer 1

オペラ-webdriverをスコーププロトコルを介しオペラと通信します。デフォルトでは、このポート上でのヒントのための7001