Question

我正在编写一个从JAXB创建和生成JavaFileObjects的程序。目前我已经这样做了，因此我的.java文件是使用JAXB制作的，然后加载到一个数组中。我想获取JavaFileObjects并将它们传递给JAXB并让JAXB编译并加载它们以供进一步处理。

当前生成.java文件的代码是：

    String outputDirectory = jaxbPackageGenFolderCreation();

            // Setup schema compiler
            SchemaCompiler sc = XJC.createSchemaCompiler();
            sc.forcePackageName(getPackageName());
            LOG.info("PackageName: " + getPackageName());
            LOG.info("creating BINDINGS_XJB: " + MageekConstants.BINDINGS_XJB);
            File bindings = new File(MageekConstants.BINDINGS_XJB);

            /*
            * sc.getOptions.addBindFile adds the xjc bindings file to the the schema compiler. 
            * This method shows deprecated, however it is not being removed from future 
            * versions of the API. It is not being maintained in future versions so the 
            * developers have it annotated as depreciated as a notification tool. Future 
            * stability of this call is NOT guaranteed.
            */
            sc.getOptions().addBindFile(bindings);
            // Setup SAX InputSource
            LOG.info("schema file: " + getXsdFile());
            File schemaFile = new File(getXsdFile());
            InputSource is = new InputSource(schemaFile.toURI().toString());

            // Parse & build
            sc.parseSchema(is);
            S2JJAXBModel model = sc.bind();
            JCodeModel jCodeModel = model.generateCode(null, null);

            String[] splitArray = null;
            try
            {
                PrintStream printStream = new PrintStream(new File(MageekConstants.TEMP_DIR
                        + "GeneratedFiles.mageek"));
                jCodeModel.build(new File(outputDirectory), printStream);

//              ByteArrayOutputStream baos = new ByteArrayOutputStream();
//              CodeWriter codeWriter = new SingleStreamCodeWriter(baos);
//              jCodeModel.build(codeWriter);

我已经研究过内存中的java编译和其他方法，但似乎没有任何东西可以做我想要的而没有任何IO到磁盘。有朋友告诉我，JAXB可以获取.java文件然后加载它们。我没有找到关于此或示例的文档。任何帮助都会很棒。

Answer 1

您可以像（by answer）一样动态编译类：

    JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
    compiler.run(null, null, null, files);

请查看类似的问题以寻求其他选择：

使用JAXB将.java文件加载到clasloader

1 个答案: