Java在各种框架下编译Scala 【一】

如何利用Java在各种框架下编译Scala项目？本文转载自一位外国开发人员的blog，是一篇利用Java语言在最流行的各种Java框架下调用Scala的项目的教程，从细微入手解决实际问题。

 

下面是一个教程文件是我在如今最佳或者说最流行的Java框架——Spring、Hibernate/JPA、Wicket、Maven和Intellij IDEA上充分利用Java语言调用Scala的项目，希望能帮助其他的Java程序员使用一个企业级的Scala项目。

在IDE上的设置

首先，下载的IntelliJ IDEA的10.0.x（社区版），因为目前它是最好的Scala的IDE。然后选择File |设置|插件(具体的安装方式请参见本博客中SCALA开发之环境搭建【IntelliJ IDEA】)，选择可用的选项卡来安装Scala插件。

创建Maven项目

在IntelliJ IDEA中，选择文件|新建项目，然后选择Maven的模块创建一个Maven项目。然后修改如下所示的pom.xml。添加所有你需要的设置，建立Scala的汇编语言：

<project xmlnsxmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"           
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/maven-v4_0_0.xsd">           
    <modelVersion>4.0.0</modelVersion>           
    <groupId>com.foo</groupId>           
    <artifactId>myapp</artifactId>           
    <packaging>war</packaging>           
    <version>1.0-SNAPSHOT</version>           
    <name>myapp Java EE 6 Webapp</name>           
    <url>http://maven.apache.org</url>           
    <properties>           
        <spring.version>3.0.3.RELEASE</spring.version>           
     </properties>          
           
    <repositories>           
        <repository>           
            <id>java.net2</id>           
            <name>Repository hosting the jee6 artifacts</name>           
            <url>http://download.java.net/maven/2</url>           
         </repository>          
           
        <repository>           
            <id>scala-tools.org</id>           
             <name>Scala-tools Maven2 Repository</name>          
            <url>http://scala-tools.org/repo-releases</url>           
           
        </repository>           
        <repository>           
             <id>wpt-release</id>          
            <url>http://wicketpagetest.sourceforge.net/m2-repo/releases</url>           
           
        </repository>           
        <repository>           
             <id>wpt-snapshot</id>          
            <url>http://wicketpagetest.sourceforge.net/m2-repo/snapshots</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>           
    <dependencyManagement>           
        <dependencies>           
            <dependency>           
                 <groupId>org.springframework</groupId>          
                <artifactId>spring-context</artifactId>           
           
                <version>${spring.version}</version>           
             </dependency>          
           
             <dependency>          
                <groupId>org.springframework</groupId>           
           
                <artifactId>spring-core</artifactId>           
                <version>${spring.version}</version>           
            </dependency>           
            <dependency>           
                <groupId>org.springframework</groupId>           
                 <artifactId>spring-web</artifactId>          
           
                <version>${spring.version}</version>           
             </dependency>          
           
             <dependency>          
                <groupId>org.springframework</groupId>           
           
                 <artifactId>spring-orm</artifactId>          
                <version>${spring.version}</version>           
           
            </dependency>           
        </dependencies>           
    </dependencyManagement>           
    <dependencies>           
        <dependency>           
            <groupId>com.h2database</groupId>           
            <artifactId>h2</artifactId>           
            <version>1.2.120</version>           
        </dependency>           
        <dependency>           
             <groupId>org.hibernate</groupId>          
            <artifactId>hibernate-entitymanager</artifactId>           
           
            <version>3.4.0.GA</version>           
        </dependency>           
        <dependency>           
            <groupId>org.springframework</groupId>           
            <artifactId>spring-orm</artifactId>           
        </dependency>           
        <dependency>           
            <groupId>com.ttdev</groupId>           
            <artifactId>wpt-core</artifactId>           
            <version>1.5.2-SNAPSHOT</version>           
            <scope>test</scope>           
        </dependency>           
        <dependency>           
            <groupId>com.ttdev</groupId>           
            <artifactId>wpt-runtime-spring</artifactId>           
             <version>1.5.2-SNAPSHOT</version>          
           
        </dependency>           
        <dependency>           
             <groupId>javax</groupId>          
            <artifactId>javaee-web-api</artifactId>           
           
            <version>6.0</version>           
            <scope>provided</scope>           
        </dependency>           
        <dependency>           
            <groupId>junit</groupId>           
            <artifactId>junit</artifactId>           
            <version>3.8.2</version>           
            <scope>test</scope>           
        </dependency>           
        <dependency>           
            <groupId>org.scala-lang</groupId>           
            <artifactId>scala-library</artifactId>           
            <version>2.8.0.RC3</version>           
        </dependency>           
        <dependency>           
            <groupId>org.apache.wicket</groupId>           
            <artifactId>wicket</artifactId>           
            <version>1.4.9</version>           
        </dependency>           
        <dependency>           
            <groupId>org.slf4j</groupId>           
            <artifactId>slf4j-log4j12</artifactId>           
            <version>1.4.2</version>           
        </dependency>           
    </dependencies>           
    <build>           
        <pluginManagement>           
            <plugins>           
                 <plugin>          
                    <groupId>org.apache.maven.plugins</groupId>           
           
                    <artifactId>maven-compiler-plugin</artifactId>           
                     <version>2.0.2</version>          
           
                </plugin>           
                <plugin>           
                     <groupId>org.scala-tools</groupId>          
                    <artifactId>maven-scala-plugin</artifactId>           
           
                    <version>2.9.1</version>           
                </plugin>           
            </plugins>           
        </pluginManagement>           
        <plugins>           
            <plugin>           
                 <groupId>org.apache.maven.plugins</groupId>          
                <artifactId>maven-compiler-plugin</artifactId>           
           
                <executions>           
                    <execution>           
                        <phase>compile</phase>           
                        <goals>           
                            <goal>compile</goal>           
                        </goals>           
                    </execution>           
                </executions>           
                <configuration>           
                    <source>1.6</source>           
                    <target>1.6</target>           
                </configuration>           
            </plugin>           
            <plugin>           
                <groupId>org.apache.maven.plugins</groupId>           
                 <artifactId>maven-war-plugin</artifactId>          
           
                <version>2.1-beta-1</version>           
                <configuration>           
                    <failOnMissingWebXml>false</failOnMissingWebXml>           
                 </configuration>          
           
            </plugin>           
            <plugin>           
                 <groupId>org.scala-tools</groupId>          
                <artifactId>maven-scala-plugin</artifactId>           
           
                <executions>           
                    <execution>           
                         <id>scala-compile-first</id>          
                        <phase>process-resources</phase>           
           
                         <goals>          
                            <goal>add-source</goal>           
           
                            <goal>compile</goal>           
                        </goals>           
                    </execution>           
                    <execution>           
                         <id>scala-test-compile</id>          
                        <phase>process-test-resources</phase>           
           
                         <goals>          
                            <goal>testCompile</goal>           
           
                        </goals>           
                    </execution>           
                </executions>           
            </plugin>           
        </plugins>           
        <finalName>myapp</finalName>           
    </build>           
</project>         

等待一段时间，IDEA将提示导入的项目是否需要更改。回答是肯定。