IntelliJ Idea Maven項目中Scala模塊的Scala簽名錯誤

Question

免責聲明：我是Scala的新手，並嘗試使用IntelliJ IDEA中的簡單scala archtype創建示例Scala Maven項目。 IntelliJ版本是14.1.2

下面是我的pom文件，我確實將Scala版本從2.7改為2.11.6，原型默認生成。

<!-- language: lang-xml -->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>learn.rxscala</groupId>
  <artifactId>rxscala-reactive-course-play</artifactId>
  <version>1.0.0-SNAPSHOT</version>
  <inceptionYear>2008</inceptionYear>
  <properties>
    <scala.version>2.11.6</scala.version>
    <slf4j.version>1.7.5</slf4j.version>
    <reactivex.version>0.23.0</reactivex.version>
    <rx.scala.compat.version>2.11</rx.scala.compat.version>
    <scala.async.version>0.9.2</scala.async.version>
  </properties>

  <repositories>
    <repository>
      <id>scala-tools.org</id>
      <name>Scala-Tools Maven2 Repository</name>
      <url>http://scala-tools.org/repo-releases</url>
    </repository>
  </repositories>

  <pluginRepositories>
    <pluginRepository>
      <id>scala-tools.org</id>
      <name>Scala-Tools Maven2 Repository</name>
      <url>http://scala-tools.org/repo-releases</url>
    </pluginRepository>
  </pluginRepositories>

  <dependencies>
    <dependency>
      <groupId>org.scala-lang</groupId>
      <artifactId>scala-library</artifactId>
      <version>${scala.version}</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.10</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.specs</groupId>
      <artifactId>specs</artifactId>
      <version>1.2.5</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>io.reactivex</groupId>
      <artifactId>rxscala_${rx.scala.compat.version}</artifactId>
      <version>${reactivex.version}</version>
    </dependency>
    <dependency>
      <groupId>org.scala-lang.modules</groupId>
      <artifactId>scala-async_${rx.scala.compat.version}</artifactId>
      <version>${scala.async.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>
  </dependencies>

  <build>
    <sourceDirectory>src/main/scala</sourceDirectory>
    <testSourceDirectory>src/test/scala</testSourceDirectory>
    <plugins>
      <plugin>
        <groupId>org.scala-tools</groupId>
        <artifactId>maven-scala-plugin</artifactId>
        <executions>
          <execution>
            <goals>
              <goal>compile</goal>
              <goal>testCompile</goal>
            </goals>
          </execution>
        </executions>
        <configuration>
          <scalaVersion>${scala.version}</scalaVersion>
          <args>
            <arg>-target:jvm-1.5</arg>
          </args>
        </configuration>
      </plugin>
    </plugins>
  </build>
  <reporting>
    <plugins>
      <plugin>
        <groupId>org.scala-tools</groupId>
        <artifactId>maven-scala-plugin</artifactId>
        <configuration>
          <scalaVersion>${scala.version}</scalaVersion>
        </configuration>
      </plugin>
    </plugins>
  </reporting>
</project>

在運行Maven測試時，我不斷收到以下錯誤 -

[WARNING] error: error while loading JUnit4, Scala signature JUnit4 has wrong version
[WARNING]  expected: 5.0
[WARNING]  found: 4.1 in JUnit4.class

我不知道如何解決這個問題？

Answer 1

只需確保使用最新的scala-archetype-simple，因為IDEA需要新的scala-archetype-simple才能使用。 但默認情況下，IDEA不提供正確的scala-srchetype-simple，您需要自己鍵入正確的scala-srchetype。

它像是。

 groupId:net.alchim31.maven

 artifactId:scala-archetype-simple

 version:1.6

 packaging:maven-archetype

Answer 2

我也有這個問題，在嘗試手動更正版本號時，我發現使用終端或CMD這么簡單，你可以建立一個新項目。

使用mvn命令可確保使用正確的ver構建項目。

mvn -B archetype：generate -DarchetypeGroupId = org.apache.maven.archetypes -DgroupId = com.mycompany.app -DartifactId = my-app

參考： http ： //maven.apache.org/guides/getting-started/index.html