这是我的错误日志：
Apr 12, 2014 3:27:46 AM org.apache.http.impl.client.DefaultRequestDirector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the target host: Permission denied: connect
Apr 12, 2014 3:27:46 AM org.apache.http.impl.client.DefaultRequestDirector tryConnect
INFO: Retrying connect
Apr 12, 2014 3:27:46 AM org.apache.http.impl.client.DefaultRequestDirector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the target host: Permission denied: connect
Apr 12, 2014 3:27:46 AM org.apache.http.impl.client.DefaultRequestDirector tryConnect
INFO: Retrying connect
Apr 12, 2014 3:27:46 AM org.apache.http.impl.client.DefaultRequestDirector tryConnect
INFO: I/O exception (java.net.SocketException) caught when connecting to the target host: Permission denied: connect
Apr 12, 2014 3:27:46 AM org.apache.http.impl.client.DefaultRequestDirector tryConnect
INFO: Retrying connect
org.openqa.selenium.remote.UnreachableBrowserException: Error communicating with the remote browser. It may have died.
Build info: version: '2.41.0', revision: '3192d8a', time: '2014-03-27 17:18:15'
System info: host: 'prgi-PC', ip: '192.168.1.9', os.name: 'Windows 7', os.arch: 'amd64', os.version: '6.1', java.version: '1.7.0_51'
Driver info: driver.version: RemoteWebDriver
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:589)
at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:268)
at org.openqa.selenium.remote.RemoteWebElement.findElements(RemoteWebElement.java:187)
at org.openqa.selenium.remote.RemoteWebElement.findElementsByTagName(RemoteWebElement.java:264)
at org.openqa.selenium.By$ByTagName.findElements(By.java:323)
at org.openqa.selenium.remote.RemoteWebElement.findElements(RemoteWebElement.java:163)
at com.sai.kiran.Test.main(Test.java:155)
Caused by: java.net.SocketException: Permission denied: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:83)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:117)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:178)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:131)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:610)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:445)
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:72)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)
at org.openqa.selenium.remote.HttpCommandExecutor.fallBackExecute(HttpCommandExecutor.java:322)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:301)
at org.openqa.selenium.firefox.internal.NewProfileExtensionConnection.execute(NewProfileExtensionConnection.java:165)
at org.openqa.selenium.firefox.FirefoxDriver$LazyCommandExecutor.execute(FirefoxDriver.java:362)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:568)
... 6 more
CODE：
FirefoxProfile profile = new FirefoxProfile();
String path="C:\\Users\\prgi\\Downloads\\listShack";
profile.setPreference("browser.download.folderList", 2);
profile.setPreference("browser.download.dir", path);
profile.setPreference("browser.download.manager.alertOnEXEOpen", false);
profile.setPreference("browser.helperApps.neverAsk.saveToDisk","application/msword,application/csv,text/csv,image/png ,image/jpeg");
profile.setPreference("browser.download.manager.showWhenStarting",
false);
profile.setPreference("browser.download.manager.focusWhenStarting",
false);
//profile.setPreference("browser.download.useDownloadDir",true);
profile.setPreference("browser.helperApps.alwaysAsk.force",
false);
profile.setPreference("browser.download.manager.alertOnEXEOpen", false);
profile.setPreference("browser.download.manager.closeWhenDone", false);
profile.setPreference("browser.download.manager.showAlertOnComplete", false);
profile.setPreference("browser.download.manager.useWindow",
false);
profile.setPreference("browser.download.manager.showWhenStarting",false);
profile.setPreference("services.sync.prefs.sync.browser.download.manager.showWhenStarting",
false);
profile.setPreference("pdfjs.disabled", true);
WebDriver driver = new FirefoxDriver(profile);
从这里开始管理我的元素..
注意：它每天24小时不间断工作两天，今天我经常收到此错误。
答案 0 :(得分：10)
<强>问题
我在Windows 7中本地运行InternetExplorerDriver时遇到同样的问题 - （IEDriverServer_Win32_2.42.0.zip）
org.openqa.selenium.remote.UnreachableBrowserException: Error communicating with the remote browser. It may have died.
当我在TaskManager下检查正在运行的进程时，有多个IEDriverServer.exe进程正在运行，尚未正确清理。
<强>解决方案
运行以下命令，杀死所有正在运行的IEDriverServer.exe进程，并解决了这个问题（对我而言）。
taskkill /F /IM IEDriverServer.exe
答案 1 :(得分：0)
我按照这些步骤解决了问题：
获取firefox个人资料名称
以上命令之一将打开弹出窗口，说明默认配置文件的名称，这是默认的“默认”
使用下面提到的代码获取firefox驱动程序
ProfilesIni allProfiles = new ProfilesIni();
FirefoxProfile myProfile = allProfiles.getProfile("default");
myProfile.setAcceptUntrustedCertificates(true);
myProfile.setAssumeUntrustedCertificateIssuer(true);
driver = new FirefoxDriver(myProfile);
答案 2 :(得分：0)
对于我使用以1开头的端口而不是接近默认端口值5555的端口，导致我出现此错误。将节点端口从1234更改回5558已解决了该问题。不确定端口是如何工作的，但似乎1234不稳定
答案 3 :(得分：-3)
Please try to replace exe path with below command
File file = new File("IE DriverServer.exe path");
System.setProperty("webdriver.ie.driver", file.getAbsolutePath());