问题：导入spark程序的maven依赖包时，无法导入，且报错：0:23 Unable to import maven project: See logs for details
2019-08-23 00:34:05,140 [ 747292] WARN - #org.jetbrains.idea.maven - Cannot reconnect. java.lang.RuntimeException: Cannot reconnect. at org.jetbrains.idea.maven.server.RemoteObjectWrapper.perform(RemoteObjectWrapper.java:111) at org.jetbrains.idea.maven.server.MavenIndexerWrapper.createIndex(MavenIndexerWrapper.java:61) at org.jetbrains.idea.maven.indices.MavenIndex.createContext(MavenIndex.java:396) at org.jetbrains.idea.maven.indices.MavenIndex.access$500(MavenIndex.java:48) at org.jetbrains.idea.maven.indices.MavenIndex$IndexData.<init>(MavenIndex.java:703) at org.jetbrains.idea.maven.indices.MavenIndex.doOpen(MavenIndex.java:236) at org.jetbrains.idea.maven.indices.MavenIndex.open(MavenIndex.java:202) at org.jetbrains.idea.maven.indices.MavenIndex.<init>(MavenIndex.java:104) at org.jetbrains.idea.maven.indices.MavenIndices.add(MavenIndices.java:92) at org.jetbrains.idea.maven.indices.MavenIndicesManager.ensureIndicesExist(MavenIndicesManager.java:174) at org.jetbrains.idea.maven.indices.MavenProjectIndicesManager$3.run(MavenProjectIndicesManager.java:117) at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:337) at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:327) at com.intellij.util.ui.update.MergingUpdateQueue.lambda$flush$1(MergingUpdateQueue.java:277) at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:291) at com.intellij.util.ui.update.MergingUpdateQueue.run(MergingUpdateQueue.java:246) at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:246) at com.intellij.util.Alarm$Request.runSafely(Alarm.java:417) at com.intellij.util.Alarm$Request.access$700(Alarm.java:344) at com.intellij.util.Alarm$Request$1.run(Alarm.java:384) at com.intellij.util.Alarm$Request.run(Alarm.java:395) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at com.intellij.util.concurrency.SchedulingWrapper$MyScheduledFutureTask.run(SchedulingWrapper.java:242) at com.intellij.util.concurrency.BoundedTaskExecutor$2.run(BoundedTaskExecutor.java:212) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)Caused by: java.rmi.UnmarshalException: Error unmarshaling return header; nested exception is: java.net.SocketException: Connection reset
原因：maven版本问题，我原来使用的是maven3.6.0，不兼容。
我需要导入的maven依赖如下：
<properties> <scala.version>2.11.8</scala.version> <hadoop.version>2.7.4</hadoop.version> <spark.version>2.1.3</spark.version> </properties> <dependencies> <dependency> <groupId>org.scala-lang</groupId> <artifactId>scala-library</artifactId> <version>${scala.version}</version> </dependency> <dependency> <groupId>org.apache.spark</groupId> <artifactId>spark-core_2.11</artifactId> <version>${spark.version}</version> </dependency>
</dependencies>
<build> <sourceDirectory>src/main/scala</sourceDirectory> <testSourceDirectory>src/test/scala</testSourceDirectory> <plugins> <plugin> <groupId>net.alchim31.maven</groupId> <artifactId>scala-maven-plugin</artifactId> <version>3.2.2</version> <executions> <execution> <goals> <goal>compile</goal> <goal>testCompile</goal> </goals> <configuration> <args> <arg>-dependencyfile</arg> <arg>${project.build.directory}/.scala_dependencies</arg> </args> </configuration> </execution> </executions> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <version>2.4.3</version> <executions> <execution> <phase>package</phase> <goals> <goal>shade</goal> </goals> <configuration> <filters> <filter> <artifact>*:*</artifact> <excludes> <exclude>META-INF/*.SF</exclude> <exclude>META-INF/*.DSA</exclude> <exclude>META-INF/*.RSA</exclude> </excludes> </filter> </filters> <transformers> <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer"> <mainClass></mainClass> </transformer> </transformers> </configuration> </execution> </executions> </plugin> </plugins> </build>
测试步骤：
1.更换仓库为一个空白的repository。同时该仓库的路径比较浅，怀疑是原来的仓库的路径太深了。或者原来仓库内容有问题。没用。
2.pom.xml中删除一些依赖、插件，然后一个个添加，没用。
解决方法：更换maven为idea自带的maven3.3.9.
转载于:https://www.cnblogs.com/mediocreWorld/p/11426836.html
相关资源：spark-token-provider-kafka-0-10_2.12-3.0.0.jar