Intellij Idea Maven 存储库都在“更新”字段中显示“错误”

Question

我正在尝试运行几个 Maven 项目。 主要是我想在另一个（本地）项目中使用来自一个（本地）项目的方法。

我知道我需要获取 Maven 才能将一个项目添加到本地.m2存储库。

但是，当我尝试更新本地存储库时，它只会显示“错误”。 它还说，当我尝试更新远程存储库时，Maven 说一些插件（例如org.apache.maven.plugins:maven-javadoc-plugin:3.0

所以我想我错过了 Idea 的设置步骤。 但是我不知道那是什么，我找不到它。

我已经尝试根据 SO 上的几个答案使缓存无效并重新启动，但这没有帮助。 该项目在命令行中构建良好。

idea.log 已响应尝试更新 local.m2 数据库：

2021-04-12 11:24:38,002 [254387512]   WARN -      #org.jetbrains.idea.maven - Failed to update Maven indices for: [local] /Users/jontyn/.m2/repository 
java.lang.RuntimeException: Cannot reconnect.
    at org.jetbrains.idea.maven.server.RemoteObjectWrapper.perform(RemoteObjectWrapper.java:82)
    at org.jetbrains.idea.maven.server.MavenIndexerWrapper.createIndex(MavenIndexerWrapper.java:50)
    at org.jetbrains.idea.maven.indices.MavenIndex.createContext(MavenIndex.java:384)
    at org.jetbrains.idea.maven.indices.MavenIndex.updateOrRepair(MavenIndex.java:337)
    at org.jetbrains.idea.maven.indices.MavenIndices.updateOrRepair(MavenIndices.java:128)
    at org.jetbrains.idea.maven.indices.MavenIndicesManager.doUpdateIndices(MavenIndicesManager.java:292)
    at org.jetbrains.idea.maven.indices.MavenIndicesManager$3.run(MavenIndicesManager.java:256)
    at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:962)
    at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcessWithProgressAsync$5(CoreProgressManager.java:472)
    at com.intellij.openapi.progress.impl.ProgressRunner.lambda$submit$3(ProgressRunner.java:235)
    at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:178)
    at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:658)
    at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:610)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:65)
    at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:165)
    at com.intellij.openapi.progress.impl.ProgressRunner.lambda$submit$4(ProgressRunner.java:235)
    at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1700)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:668)
    at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:665)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:665)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is: 
    java.net.ConnectException: Connection refused (Connection refused)
    at java.rmi/sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:623)
    at java.rmi/sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:209)
    at java.rmi/sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:196)
    at java.rmi/sun.rmi.server.UnicastRef.invoke(UnicastRef.java:132)
    at java.rmi/java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:217)
    at java.rmi/java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:162)
    at com.sun.proxy.$Proxy121.createIndexer(Unknown Source)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at com.intellij.execution.rmi.RemoteUtil.invokeRemote(RemoteUtil.java:150)
    at com.intellij.execution.rmi.RemoteUtil.access$400(RemoteUtil.java:21)
    at com.intellij.execution.rmi.RemoteUtil$1.lambda$invoke$0(RemoteUtil.java:134)
    at com.intellij.openapi.util.ClassLoaderUtil.computeWithClassLoader(ClassLoaderUtil.java:31)
    at com.intellij.execution.rmi.RemoteUtil.executeWithClassLoader(RemoteUtil.java:202)
    at com.intellij.execution.rmi.RemoteUtil$1.invoke(RemoteUtil.java:134)
    at com.sun.proxy.$Proxy121.createIndexer(Unknown Source)
    at org.jetbrains.idea.maven.server.MavenServerConnectorImpl.createIndexer(MavenServerConnectorImpl.java:197)
    at org.jetbrains.idea.maven.server.MavenServerManager$4.create(MavenServerManager.java:381)
    at org.jetbrains.idea.maven.server.MavenServerManager$4.create(MavenServerManager.java:377)
    at org.jetbrains.idea.maven.server.RemoteObjectWrapper.getOrCreateWrappee(RemoteObjectWrapper.java:41)
    at org.jetbrains.idea.maven.server.MavenIndexerWrapper.getRemoteId(MavenIndexerWrapper.java:136)
    at org.jetbrains.idea.maven.server.MavenIndexerWrapper.lambda$createIndex$0(MavenIndexerWrapper.java:50)
    at org.jetbrains.idea.maven.server.RemoteObjectWrapper.perform(RemoteObjectWrapper.java:76)
    ... 23 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
    at java.base/java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
    at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
    at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
    at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.base/java.net.Socket.connect(Socket.java:609)
    at java.base/java.net.Socket.connect(Socket.java:558)
    at java.base/java.net.Socket.<init>(Socket.java:454)
    at java.base/java.net.Socket.<init>(Socket.java:231)
    at com.intellij.execution.rmi.RemoteServer$1.createSocket(RemoteServer.java:122)
    at java.rmi/sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:617)
    ... 47 more

Answer 1

Idea 需要连接到网络才能访问 local.m2 存储库？

IDE 在导入基于 Maven 的项目或下载 Z9115F7317F737F7Z2 索引时启动 Maven 服务器进程。 对于与此进程的通信 IDE 使用环回接口。 请参阅无法导入 Maven 项目，导入失败并出现错误：无法重新连接相关文档：

无法访问 localhost 可能有多种原因：

• DNS 配置错误127.0.0.1是 IPv4 环回流量的标准地址，本地主机名称必须解析为127.0.0.1 IPv4 地址。 如果不是 - 将发生错误。

• 防病毒或防火墙阻止与本地主机的连接

• 间歇性发生此错误时的 IDE 错误： https://youtrack.jetbrains.com/issue/IDEA-263673它通常会在下一次尝试或项目重新打开时起作用。