Question

我使用JDK和JRE 8在IntelliJ Idea中工作。该项目使用了lombok，我想进行代码生成和运行时编译。我的目标是生成一个与一些复杂的运行时生成的lambda函数执行相同任务的代码，以加快评估速度。该项目大量使用lombok。我遇到了与here讨论的问题相同的问题，所以我知道解决这个问题的一种方法是添加特定的依赖项。

我的问题是：是否有任何其他更清晰的解决此问题的方法，而不是编辑pom.xml？因为我参与了一个由团队开发的大项目，我不想干涉这样的基础。

现在，更具体地说，我的代码看起来像运行时编译的常用代码，可以在that one等示例中找到：

//Create class code
StringBuilder sb = new StringBuilder();
sb.append("package foo{\n");
sb.append("    public class bar{\n");
sb.append("        public Function<Object,Object> tee {return x -> x;}\n");
sb.append("    }\n");
sb.append("}");
String code = sb.toString();
//Creating a temporary file
File flie = File.createTempFile("bar", ".java");
Writer writer = new Filewriter(file);
writer.write(code);
writer.flush();
writer.close();
//Creating compilation environment
DiagnosticCollector<JavaFileObject> diagnostics = 
    new DiagnosticCollector<JavaFileObject>();
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
StandardJavaFileManager fileManager =
    compiler.getStandardFileManager(diagnostics, null, null);
Iterable<? extends JavaFileObject> compilationUtils =
    fileManager.getJavaFileObjectsFromFiles(Arrays.asList(file));
JavaCompiler.CompilationTask task = compiler.getTask(
    null, fileManager, diagnostics, null, null, compilationUtils);
//Compiling the file
boolean success = task.call();
//Trying to extract the classes
Class clazz = Class.forName("bar");

为了便于阅读，我取消了所有try和catch s。现在，当我运行代码时，操作符Class clazz = Class.forName("bar);上会抛出异常。同时，diagnostics变量显示以下消息：

C:\Users\Kolya\AppData\Local\Temp\bar4319793429862999020.java:6: warning: Can't initialize javac processor due to (most likely) a class loader problem: java.lang.NoClassDefFoundError: com/sun/tools/javac/processing/JavacProcessingEnvironment
class bar
^
    at lombok.javac.apt.LombokProcessor.init(LombokProcessor.java:83)
    at lombok.core.AnnotationProcessor$JavacDescriptor.want(AnnotationProcessor.java:87)
    at lombok.core.AnnotationProcessor.init(AnnotationProcessor.java:140)
    at lombok.launch.AnnotationProcessorHider$AnnotationProcessor.init(AnnotationProcessor.java:69)
    at com.sun.tools.javac.processing.JavacProcessingEnvironment$ProcessorState.<init>(JavacProcessingEnvironment.java:500)
    at com.sun.tools.javac.processing.JavacProcessingEnvironment$DiscoveredProcessors$ProcessorStateIterator.next(JavacProcessingEnvironment.java:597)
    at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:690)
    at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$1800(JavacProcessingEnvironment.java:91)
    at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1035)
    at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1176)
    at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1170)
    at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:856)
    at com.sun.tools.javac.main.Main.compile(Main.java:523)
    at com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)
    at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)
    at com.megasoft.superproj.hyperpackage.AwesomeCodeGen.generateAwesomeCode(AwesomeCodeGen.java:100500)
    ...

感谢任何建议。

重温lombok与java运行时编译的冲突

0 个答案: