从Java程序编译scala代码时出现异常

Question

我有以下代码在 Java 程序中运行时编译 scala 代码

    Settings s = new Settings();
    Global g = new Global(s);
    Global.Run run = g.new Run();
    List<String> files = new LinkedList<>();

    files.add("src/main/java/scala/rules/ScalaRuleBasedStrategy.scala");

    run.compile(JavaConverters.asScalaBufferConverter(files)
     .asScala().toList());

但我收到此错误：

线程“main”中的异常 java.lang.NoSuchMethodError: scala.tools.nsc.Global$gen$.mkBlock(Lscala/collection/immutable/List;)Lscala/reflect/internal/Trees$Tree; 在 scala.tools.nsc.ast.parser.TreeBuilder.makeBlock(TreeBuilder.scala:110) 在 scala.tools.nsc.ast.parser.Parsers$Parser.block(Parsers.scala:1689)

Answer 1

试试

    Settings s = new Settings();
    MutableSettings.BooleanSetting usejavacp = s.usejavacp(); // added
    usejavacp.value_$eq(true); // added
    Global g = new Global(s);
    Global.Run run = g.new Run();
    List<String> files = new LinkedList<>();

    files.add("src/main/java/scala/rules/ScalaRuleBasedStrategy.scala");

    run.compile(JavaConverters.asScalaBufferConverter(files)
            .asScala().toList());