前记

最近几天电脑启动Pycharm和IDEA都偶尔会出现异常并且无法打开, 最开始是只出现一两次重启解决了也就没管, 今天电脑刚开机就遇见IDEA无法启动了, 这可就不能忍了.

注 : 题主电脑是Windows

解决

由于上官网很快就解决了就忘记截图了, 不过栈顶的异常如下 :

java.net.BindException: Address already in use: bind

看到这个异常的时候大概推测应该是端口被占用了, 刚好异常提醒很贴心的给出了官网的处理连接Start Failed, Internal error: recovering IDE to the working state after the critical startup error – IDEs Support (IntelliJ Platform) | JetBrains

在官网中找到了下面这段话

If you get “java.net.BindException: Address already in use: bind “ exception, please refer to IDEA-238995 for the workaround.

进入上面的超链接就有解决方案了, 解决方案我贴在下面

官网给出的解决方案

应变方法 : 在具有管理员权限的Powershell或者cmd中运行如下命令 :

( 如果是Win10可以直接右键最下角的开始就可以找到带管理员的powershell )

1 2	netsh int ipv4 set dynamicport tcp start=49152 num=16383 netsh int ipv4 set dynamicport udp start=49152 num=16383

如果上面的命令运行了之后还是打不开IDEA, 那么试一下下面的命令

1 2	net stop winnat net start winnat

PROBLEM

If all the 50 ports between 6942 and 6991 are reserved, taken by the other apps or firewall doesn’t allow IDE to bind on them, startup fails with the following exception:

java.util.concurrent.CompletionException: java.net.BindException: Address already in use: bind
    at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314)
    at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:319)
    at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1702)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.net.BindException: Address already in use: bind
    at java.base/sun.nio.ch.Net.bind0(Native Method)
    at java.base/sun.nio.ch.Net.bind(Net.java:455)
    at java.base/sun.nio.ch.Net.bind(Net.java:447)
    at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:227)
    at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:134)
    at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:550)
    at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1334)
    at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:506)
    at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:491)
    at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:973)
    at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:248)
    at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:356)
    at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
    at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500)
    at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
    at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
    ... 1 more

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JRE 11.0.6+8-b765.25 amd64 by JetBrains s.r.o
C:\Users\yatwi\AppData\Local\JetBrains\Toolbox\apps\Rider\ch-0\201.6668.197\jbr