相关疑难解决方法(0)

我有一个使用Ant构建文件的Maven项目:

<?xml version='1.0' encoding='UTF-8'?>
<project>
   <modelVersion>4.0.0</modelVersion>
   <artifactId>my-test-app</artifactId>
   <groupId>my-test-group</groupId>
   <version>1.0-SNAPSHOT</version>

   <build>
      <plugins>
         <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-antrun-plugin</artifactId>
            <version>1.8</version>
            <executions>
               <execution>
                  <id>compile</id>
                  <phase>compile</phase>
                  <configuration>
                     <target>
                        <ant antfile="build.xml" inheritRefs="true">
                           <target name="all"/>
                        </ant>
                     </target>
                  </configuration>
                  <goals>
                     <goal>run</goal>
                  </goals>
               </execution>
            </executions>
         </plugin>
      </plugins>
   </build>
</project>

Ant构建文件使用脚本:

<?xml version='1.0' encoding='UTF-8'?>
<project name="scriptdef-test-build">
   <scriptdef name="test-script" language="javascript">
      <![CDATA[
           var System = Java.type('java.lang.System');
           System.out.println("Working!");
        ]]>
   </scriptdef>
   <target name="all">
      <test-script/>
   </target>
</project>

在Java 8上它可以工作,但在Java 9(9-ea + 162)上它找不到脚本引擎:

org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-antrun-plugin:1.8:run (compile) on project my-test-app: An Ant BuildException has occured: …

我们将 Apache Ant 与 Nashorn JavaScript Engine 结合使用，该引擎在 jdk 15 及更高版本中已被弃用并删除。我试图找到如何从 Nashorn 切换到 Graal VM，但即使在 Apache 网站上也没有找到任何可用的信息。请告知我需要哪些罐子以及我应该放置它们。我们的代码需要改变什么。如果有人已经这样做了，请分享您的经验。我有一个针对 jdk1.8.0_311 运行的示例：

<?xml version="1.0" ?>
<project name="test" default="test">
    <property environment="env"/>   
    <target name="test" >
        <script language="javascript">          
            <![CDATA[
            load("nashorn:mozilla_compat.js");
            importPackage(java.time);
            var today = new Date();
            var date = today.getFullYear()+'-'+(today.getMonth()+1)+'-'+today.getDate();
            self.log("This script is for Test Of Nashorn Javascript Engine");
            print ("Today is: " + date );
            ]]>
        </script>
    </target>
</project>

结果看起来像：

test:
   [script] Warning: Nashorn engine is planned to be removed from a future JDK release …