Eclipse、Scala 和 Maven - Class 文件未生成
Eclipse, Scala & Maven - Class files are not generating
我在 eclipse 中将我的 scala 项目转换为使用 Maven（只需右键单击项目并配置 Maven 构建），这创建了 pom.xml，添加了正确的依赖关系，从 maven 存储库中提取所需的 jars 但每当我尝试编译 我没有在 target\classes 文件夹中看到 class 文件生成。但是，我在 target\classes 文件夹下的相应目录中看到了实际的源代码，即 scala 文件。我不确定为什么要复制 target\classes 文件夹中的源文件。
另一个奇怪的事情是，如果我在 eclipse 中打开单个 scala 文件并进行一些代码更改，那么它会自动构建那个 class 文件，但是我有 1000 多个 scala 文件，所以这不是一个可行的选择。
我尝试了所有选项，例如 Eclipse - Clean & Build，但没有任何效果，我什至尝试在 eclipse 中使用 maven build 但它总是出现此消息 "Nothing to compile - all classes are up to date"，我清理了我的目标目录但是仍然是一个问题。
对于这方面的任何帮助，我将不胜感激。
提前致谢
我正在使用 Scala Eclipse IDE
-Scala IDE Eclipse SDK 构建
构建 ID：3.0.4-2.11-20140520-1158-Typesafe
Content of Pom.xml
<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<groupId>notmaven</groupId>
<artifactId>notmaven</artifactId>
<version>0.0.1-SNAPSHOT</version>
<repositories>
<repository>
<snapshots>
<enabled>false</enabled>
</snapshots>
<id>central</id>
<name>Central Repository</name>
<url>http://repo.maven.apache.org/maven2</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<releases>
<updatePolicy>never</updatePolicy>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
<id>central</id>
<name>Central Repository</name>
<url>http://repo.maven.apache.org/maven2</url>
</pluginRepository>
</pluginRepositories>
<build>
<sourceDirectory>C:\projectsomu\notmaven\src</sourceDirectory>
<scriptSourceDirectory>C:\projectsomu\notmaven\src\main\scripts</scriptSourceDirectory>
<testSourceDirectory>C:\projectsomu\notmaven\src\test\java</testSourceDirectory>
<outputDirectory>C:\projectsomu\notmaven\target\classes</outputDirectory>
<testOutputDirectory>C:\projectsomu\notmaven\target\test-classes</testOutputDirectory>
<resources>
<resource>
<directory>C:\projectsomu\notmaven\src</directory>
<excludes>
<exclude>**/*.java</exclude>
</excludes>
</resource>
</resources>
<testResources>
<testResource>
<directory>C:\projectsomu\notmaven\src\test\resources</directory>
</testResource>
</testResources>
<directory>C:\projectsomu\notmaven\target</directory>
<finalName>notmaven-0.0.1-SNAPSHOT</finalName>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.3</version>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.2-beta-5</version>
</plugin>
<plugin>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.1</version>
</plugin>
<plugin>
<artifactId>maven-release-plugin</artifactId>
<version>2.0</version>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<executions>
<execution>
<id>default-compile</id>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<source>1.3</source>
<target>1.2</target>
</configuration>
</execution>
<execution>
<id>default-testCompile</id>
<phase>test-compile</phase>
<goals>
<goal>testCompile</goal>
</goals>
<configuration>
<source>1.3</source>
<target>1.2</target>
</configuration>
</execution>
</executions>
<configuration>
<source>1.3</source>
<target>1.2</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>2.4.1</version>
<executions>
<execution>
<id>default-clean</id>
<phase>clean</phase>
<goals>
<goal>clean</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>2.5</version>
<executions>
<execution>
<id>default-testResources</id>
<phase>process-test-resources</phase>
<goals>
<goal>testResources</goal>
</goals>
</execution>
<execution>
<id>default-resources</id>
<phase>process-resources</phase>
<goals>
<goal>resources</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>2.3.2</version>
<executions>
<execution>
<id>default-jar</id>
<phase>package</phase>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.10</version>
<executions>
<execution>
<id>default-test</id>
<phase>test</phase>
<goals>
<goal>test</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.3.1</version>
<executions>
<execution>
<id>default-install</id>
<phase>install</phase>
<goals>
<goal>install</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.7</version>
<executions>
<execution>
<id>default-deploy</id>
<phase>deploy</phase>
<goals>
<goal>deploy</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-site-plugin</artifactId>
<version>3.0</version>
<executions>
<execution>
<id>default-site</id>
<phase>site</phase>
<goals>
<goal>site</goal>
</goals>
<configuration>
<outputDirectory>C:\projectsomu\notmaven\target\site</outputDirectory>
<reportPlugins>
<reportPlugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
</reportPlugin>
</reportPlugins>
</configuration>
</execution>
<execution>
<id>default-deploy</id>
<phase>site-deploy</phase>
<goals>
<goal>deploy</goal>
</goals>
<configuration>
<outputDirectory>C:\projectsomu\notmaven\target\site</outputDirectory>
<reportPlugins>
<reportPlugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
</reportPlugin>
</reportPlugins>
</configuration>
</execution>
</executions>
<configuration>
<outputDirectory>C:\projectsomu\notmaven\target\site</outputDirectory>
<reportPlugins>
<reportPlugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
</reportPlugin>
</reportPlugins>
</configuration>
</plugin>
</plugins>
</build>
<reporting>
<outputDirectory>C:\projectsomu\notmaven\target\site</outputDirectory>
</reporting>
</project>
您 should add 将以下插件添加到您的 maven 配置 (pom.xml) 并重新配置项目。
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<version>3.1.3</version>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
</plugin>
你should also add the m2e-scala plugin from its update site.
我在 eclipse 中将我的 scala 项目转换为使用 Maven（只需右键单击项目并配置 Maven 构建），这创建了 pom.xml，添加了正确的依赖关系，从 maven 存储库中提取所需的 jars 但每当我尝试编译 我没有在 target\classes 文件夹中看到 class 文件生成。但是，我在 target\classes 文件夹下的相应目录中看到了实际的源代码，即 scala 文件。我不确定为什么要复制 target\classes 文件夹中的源文件。
另一个奇怪的事情是，如果我在 eclipse 中打开单个 scala 文件并进行一些代码更改，那么它会自动构建那个 class 文件，但是我有 1000 多个 scala 文件，所以这不是一个可行的选择。
我尝试了所有选项，例如 Eclipse - Clean & Build，但没有任何效果，我什至尝试在 eclipse 中使用 maven build 但它总是出现此消息 "Nothing to compile - all classes are up to date"，我清理了我的目标目录但是仍然是一个问题。
对于这方面的任何帮助，我将不胜感激。
提前致谢
我正在使用 Scala Eclipse IDE -Scala IDE Eclipse SDK 构建 构建 ID：3.0.4-2.11-20140520-1158-Typesafe
Content of Pom.xml
<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<groupId>notmaven</groupId>
<artifactId>notmaven</artifactId>
<version>0.0.1-SNAPSHOT</version>
<repositories>
<repository>
<snapshots>
<enabled>false</enabled>
</snapshots>
<id>central</id>
<name>Central Repository</name>
<url>http://repo.maven.apache.org/maven2</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<releases>
<updatePolicy>never</updatePolicy>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
<id>central</id>
<name>Central Repository</name>
<url>http://repo.maven.apache.org/maven2</url>
</pluginRepository>
</pluginRepositories>
<build>
<sourceDirectory>C:\projectsomu\notmaven\src</sourceDirectory>
<scriptSourceDirectory>C:\projectsomu\notmaven\src\main\scripts</scriptSourceDirectory>
<testSourceDirectory>C:\projectsomu\notmaven\src\test\java</testSourceDirectory>
<outputDirectory>C:\projectsomu\notmaven\target\classes</outputDirectory>
<testOutputDirectory>C:\projectsomu\notmaven\target\test-classes</testOutputDirectory>
<resources>
<resource>
<directory>C:\projectsomu\notmaven\src</directory>
<excludes>
<exclude>**/*.java</exclude>
</excludes>
</resource>
</resources>
<testResources>
<testResource>
<directory>C:\projectsomu\notmaven\src\test\resources</directory>
</testResource>
</testResources>
<directory>C:\projectsomu\notmaven\target</directory>
<finalName>notmaven-0.0.1-SNAPSHOT</finalName>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.3</version>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.2-beta-5</version>
</plugin>
<plugin>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.1</version>
</plugin>
<plugin>
<artifactId>maven-release-plugin</artifactId>
<version>2.0</version>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<executions>
<execution>
<id>default-compile</id>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<source>1.3</source>
<target>1.2</target>
</configuration>
</execution>
<execution>
<id>default-testCompile</id>
<phase>test-compile</phase>
<goals>
<goal>testCompile</goal>
</goals>
<configuration>
<source>1.3</source>
<target>1.2</target>
</configuration>
</execution>
</executions>
<configuration>
<source>1.3</source>
<target>1.2</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>2.4.1</version>
<executions>
<execution>
<id>default-clean</id>
<phase>clean</phase>
<goals>
<goal>clean</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>2.5</version>
<executions>
<execution>
<id>default-testResources</id>
<phase>process-test-resources</phase>
<goals>
<goal>testResources</goal>
</goals>
</execution>
<execution>
<id>default-resources</id>
<phase>process-resources</phase>
<goals>
<goal>resources</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>2.3.2</version>
<executions>
<execution>
<id>default-jar</id>
<phase>package</phase>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.10</version>
<executions>
<execution>
<id>default-test</id>
<phase>test</phase>
<goals>
<goal>test</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.3.1</version>
<executions>
<execution>
<id>default-install</id>
<phase>install</phase>
<goals>
<goal>install</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.7</version>
<executions>
<execution>
<id>default-deploy</id>
<phase>deploy</phase>
<goals>
<goal>deploy</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-site-plugin</artifactId>
<version>3.0</version>
<executions>
<execution>
<id>default-site</id>
<phase>site</phase>
<goals>
<goal>site</goal>
</goals>
<configuration>
<outputDirectory>C:\projectsomu\notmaven\target\site</outputDirectory>
<reportPlugins>
<reportPlugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
</reportPlugin>
</reportPlugins>
</configuration>
</execution>
<execution>
<id>default-deploy</id>
<phase>site-deploy</phase>
<goals>
<goal>deploy</goal>
</goals>
<configuration>
<outputDirectory>C:\projectsomu\notmaven\target\site</outputDirectory>
<reportPlugins>
<reportPlugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
</reportPlugin>
</reportPlugins>
</configuration>
</execution>
</executions>
<configuration>
<outputDirectory>C:\projectsomu\notmaven\target\site</outputDirectory>
<reportPlugins>
<reportPlugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
</reportPlugin>
</reportPlugins>
</configuration>
</plugin>
</plugins>
</build>
<reporting>
<outputDirectory>C:\projectsomu\notmaven\target\site</outputDirectory>
</reporting>
</project>
您 should add 将以下插件添加到您的 maven 配置 (pom.xml) 并重新配置项目。
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<version>3.1.3</version>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
</plugin>
你should also add the m2e-scala plugin from its update site.