maven下载依赖失败，请问什么原因，附上我的setting配置

Question

```java
java.lang.Throwable: Directory index may not be queried for default project
    at com.intellij.openapi.diagnostic.Logger.error(Logger.java:145)
    at com.intellij.openapi.roots.impl.RootIndex.<init>(RootIndex.java:59)
    at com.intellij.openapi.roots.impl.DirectoryIndexImpl.getRootIndex(DirectoryIndexImpl.java:119)
    at com.intellij.openapi.roots.impl.DirectoryIndexImpl.getOrderEntries(DirectoryIndexImpl.java:164)
    at com.intellij.openapi.roots.impl.ProjectFileIndexImpl.getOrderEntriesForFile(ProjectFileIndexImpl.java:108)
    at org.jetbrains.kotlin.idea.caches.project.GetModuleInfoKt.getModuleInfoByVirtualFile(getModuleInfo.kt:308)
    at org.jetbrains.kotlin.idea.core.script.dependencies.ScriptDependenciesResolveScopeProvider.getResolveScope(ScriptDependenciesResolveScopeProvider.kt:29)
    at com.intellij.psi.impl.file.impl.ResolveScopeManagerImpl.lambda$new$0(ResolveScopeManagerImpl.java:45)
    at com.intellij.util.containers.ConcurrentFactoryMap$4.create(ConcurrentFactoryMap.java:216)
    at com.intellij.util.containers.ConcurrentFactoryMap.get(ConcurrentFactoryMap.java:46)
    at com.intellij.psi.impl.file.impl.ResolveScopeManagerImpl.getResolveScopeFromProviders(ResolveScopeManagerImpl.java:63)
    at com.intellij.psi.impl.file.impl.ResolveScopeManagerImpl.getResolveScope(ResolveScopeManagerImpl.java:119)
    at com.intellij.psi.impl.ResolveScopeManager.getElementResolveScope(ResolveScopeManager.java:51)
    at com.intellij.psi.impl.source.tree.CompositePsiElement.getResolveScope(CompositePsiElement.java:258)
    at com.intellij.psi.impl.PsiClassImplUtil.processDeclarationsInClass(PsiClassImplUtil.java:431)
    at com.intellij.psi.impl.source.PsiClassImpl.processDeclarations(PsiClassImpl.java:488)
    at com.intellij.psi.scope.util.PsiScopesUtil.treeWalkUp(PsiScopesUtil.java:69)

```xml

<?xml version="1.0" encoding="UTF-8"?>


<settings xmlns="http://maven.apache.org/SETTINGS/1.2.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.2.0 http://maven.apache.org/xsd/settings-1.2.0.xsd">
  <!-- localRepository
   | The path to the local repository maven will use to store artifacts.
   |
   | Default: ${user.home}/.m2/repository
  <localRepository>/path/to/local/repo</localRepository>
  -->
  <localRepository>E:\Repository</localRepository>

    <!-- Apache Maven 配置 -->



    <!-- 阿里云镜像 -->
    <mirrors>
        <mirror>
            <id>alimaven</id>
            <name>aliyun maven</name>
            <!-- https://maven.aliyun.com/repository/public/ -->
            <url>https://maven.aliyun.com/repository/public</url>
            <mirrorOf>central</mirrorOf>
        </mirror>
    </mirrors>

    <!-- 配置: java8, 先从阿里云下载, 没有再去私服下载  -->
    <!-- 20190929 hepengju 测试结果: 影响下载顺序的是profiles标签的配置顺序(后面配置的ali仓库先下载), 而不是activeProfiles的顺序 -->
    <profiles>
        <!-- 全局JDK1.8配置 -->
        <profile>
            <id>jdk1.8</id>
            <activation>
                <activeByDefault>true</activeByDefault>
                <jdk>1.8</jdk>
            </activation>
            <properties>
                <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
                <maven.compiler.source>1.8</maven.compiler.source>
                <maven.compiler.target>1.8</maven.compiler.target>
                <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>
            </properties>
        </profile>


        <!-- 阿里云配置: 提高国内的jar包下载速度 -->
        <profile>
            <id>ali</id>
            <repositories>
                <repository>
                    <id>alimaven</id>
                    <name>aliyun maven</name>
                    <url>https://maven.aliyun.com/repository/public</url>
                    <releases>
                        <enabled>true</enabled>
                    </releases>
                    <snapshots>
                        <enabled>true</enabled>
                    </snapshots>
                </repository>
            </repositories>
            <pluginRepositories>
                <pluginRepository>
                    <id>alimaven</id>
                    <name>aliyun maven</name>
                    <url>https://maven.aliyun.com/repository/public</url>
                </pluginRepository>
            </pluginRepositories>
        </profile>

    </profiles>

    <!-- 激活配置 -->
    <activeProfiles>
        <activeProfile>jdk1.8</activeProfile>
        <activeProfile>ali</activeProfile>
    </activeProfiles>
</settings>

Answer 1

看看仓库是不是下载了一部分，删除仓库的目录再试试。