java - 如何修复 IntelliJ 插件中的 "connection refused"异常

Question

我正在从头开始开发 IntelliJ(社区版 15.0.3)的插件。
从一开始我就遇到了以下异常(exception)情况。

希望有人可以帮助我理解为什么我会收到此警告以及我应该如何解决它？

错误消息:

WARN: Connection refused: connect

java.net.ConnectException: Connection refused: connect
    at java.net.DualStackPlainSocketImpl.connect0(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
    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 java.net.Socket.connect(Socket.java:528)
    at java.net.Socket.<init>(Socket.java:425)
    at java.net.Socket.<init>(Socket.java:241)
    at com.intellij.idea.SocketLock.tryActivate(SocketLock.java:184)
    at com.intellij.idea.SocketLock.access$300(SocketLock.java:50)
    at com.intellij.idea.SocketLock$2.call(SocketLock.java:124)
    at com.intellij.idea.SocketLock$2.call(SocketLock.java:113)
    at com.intellij.idea.SocketLock.underLocks(SocketLock.java:157)
    at com.intellij.idea.SocketLock.lock(SocketLock.java:113)
    at com.intellij.idea.StartupUtil.lockSystemFolders(StartupUtil.java:263)
    at com.intellij.idea.StartupUtil.prepareAndStart(StartupUtil.java:101)
    at com.intellij.idea.MainImpl.start(MainImpl.java:34)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.intellij.ide.plugins.PluginManager$2.run(PluginManager.java:90)
    at java.lang.Thread.run(Thread.java:744)

MyProjectComponent.java:

import com.intellij.openapi.components.ProjectComponent;
import com.intellij.openapi.project.Project;
import org.jetbrains.annotations.NotNull;

public class MyProjectComponent implements ProjectComponent {

    private Project project;

    public MyProjectComponent(Project project) {
        this.project = project;
    }

    @Override
    public void projectOpened() {
        System.out.println("projectOpened");
    }

    @Override
    public void projectClosed() {
        System.out.println("projectClosed");
    }

    @Override
    public void initComponent() {
        System.out.println("initComponent");
    }

    @Override
    public void disposeComponent() {
        System.out.println("disposeComponent");
    }

    @NotNull
    @Override
    public String getComponentName() {
        return "ProjectComponent";
    }
}

Answer 1

此异常来自 IntelliJ 平台代码，而不是来自您的插件。您无需更改插件代码即可修复该问题。