地址已在第二轮GWT项目中使用

Question

我创建了第一个样本GWT项目。我没有定制任何旧配置。我第一次运行该项目，它运行成功。

我停止了服务器并开始运行该项目。但现在，我得到以下错误

[WARN] Server class 'org.eclipse.jetty.servlet.listener.ELContextCleaner' could not be found in the web app, but was found on the system classpath
   [WARN] Adding classpath entry 'file:/C:/dev/gwt-2.6.0/gwt-dev.jar' to the web app classpath for this session
   For additional info see: file:/C:/dev/gwt-2.6.0/doc/helpInfo/webAppClassPath.html
Starting Jetty on port 8888
   [WARN] FAILED SelectChannelConnector@127.0.0.1:8888: java.net.BindException: Address already in use: bind
java.net.BindException: Address already in use: bind
    at sun.nio.ch.Net.bind0(Native Method)
    at sun.nio.ch.Net.bind(Net.java:344)
    at sun.nio.ch.Net.bind(Net.java:336)
    at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:199)
    at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
    at org.eclipse.jetty.server.nio.SelectChannelConnector.open(SelectChannelConnector.java:187)
    at org.eclipse.jetty.server.AbstractConnector.doStart(AbstractConnector.java:316)
    at org.eclipse.jetty.server.nio.SelectChannelConnector.doStart(SelectChannelConnector.java:265)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
    at org.eclipse.jetty.server.Server.doStart(Server.java:293)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
    at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:717)
    at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:522)
    at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1104)
    at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:844)
    at com.google.gwt.dev.DevMode.main(DevMode.java:322)
   [WARN] FAILED org.eclipse.jetty.server.Server@1c6f846: java.net.BindException: Address already in use: bind
java.net.BindException: Address already in use: bind
    at sun.nio.ch.Net.bind0(Native Method)
    at sun.nio.ch.Net.bind(Net.java:344)
    at sun.nio.ch.Net.bind(Net.java:336)
    at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:199)
    at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
    at org.eclipse.jetty.server.nio.SelectChannelConnector.open(SelectChannelConnector.java:187)
    at org.eclipse.jetty.server.AbstractConnector.doStart(AbstractConnector.java:316)
    at org.eclipse.jetty.server.nio.SelectChannelConnector.doStart(SelectChannelConnector.java:265)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
    at org.eclipse.jetty.server.Server.doStart(Server.java:293)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
    at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:717)
    at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:522)
    at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1104)
    at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:844)
    at com.google.gwt.dev.DevMode.main(DevMode.java:322)
[ERROR] shell failed in doStartupServer method
Port 127.0.0.1:8888 is already is use; you probably still have another session active

它说端口已经在使用中。谁能告诉它在哪里使用？或者有没有办法停止使用这个端口？

我使用这个online帮助来创建gwt项目。

Answer 1

尝试在每次运行时使用未使用的端口。

第二次运行时，它也使用相同的端口号8888，如下面的快照所示。如果第一次运行没有停止，那么它将导致您提到的错误。

检查自动选择未使用的端口复选框

以下是设置

进入开发模式并停止已经运行的服务器，如下所示

如果仍无法正常工作，请关闭Eclipse并重新启动。