Question

在我的最终项目中，我构建了测试JPA实体的工具测试，这个项目基于Web使用JSF和primefaces UI以及我的服务器glassfish服务器，我的工具测试crud（创建，使用JPQL读取，更新，删除），以及我尝试使用编译字符串完成测试，但是我从第2行得到错误，如果这个错误意味着需要jars库或需要其他解决方案？

和我的第二个问题，这是以这种方式测试任何实体的更好的解决方案吗？请支持我，谢谢..... 这是类测试Create（插入数据）......

public boolean ReturnCompleteCreateTesting(String FilePath) {
    StringBuilder sb = new StringBuilder();

    sb.append("package Testing;\n");
    sb.append("import javax.persistence.EntityManagerFactory; \n");
    sb.append("import javax.persistence.EntityManager; \n");
    sb.append("import javax.persistence.Persistence; \n");
    sb.append("import Entities.Employ; \n");
    sb.append("public class TestCreation implements Testing.TestCreate.DoStuff {\n");
    sb.append("@Override \n");
    sb.append("public void doStuff() {\n");
    sb.append("EntityManagerFactory emfactory=Persistence.createEntityManagerFactory(\"JPATestingPU\");\n");
    sb.append("EntityManager emanager=emfactory.createEntityManager();\n");
    sb.append("long ids=3;");
    sb.append("emanager.getTransaction().begin();\n");
    sb.append("Employ emp = new Employ(); \n");
    sb.append("emp.setDegree(\"20\"); \n");
    sb.append("emp.setDepartment(\"Software Engineering\"); \n");
    sb.append("emp.setId(ids); \n");
    sb.append("System.out.print(\"Save Seccessfuly\"); \n");
    sb.append("emanager.persist(emp); \n");
    sb.append("emanager.getTransaction().commit(); \n");
    sb.append("emanager.close(); \n");
    sb.append("emfactory.close(); \n");
    sb.append(" \n");
    sb.append("    }\n");
    sb.append("}\n");

    File TestEntity = new File(FilePath);

    if (TestEntity.getParentFile()
            .exists() || TestEntity.getParentFile().mkdirs()) {

        try {
            Writer writer = null;
            try {
                writer = new FileWriter(TestEntity);
                writer.write(sb.toString());
                writer.flush();
            } finally {
                try {
                    writer.close();
                } catch (Exception e) {
                }
            }

            /**
             * Compilation Requirements
             * ********************************************************************************************
             */
            DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<JavaFileObject>();
            JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
            StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnostics, null, null);

            // This sets up the class path that the compiler will use.
            // I've added the .jar file that contains the DoStuff interface within in it...
            List<String> optionList = new ArrayList<String>();
            optionList.add("-classpath");
            optionList.add(System.getProperty("java.class.path") + ";dist/TestCreate.jar");

            Iterable<? extends JavaFileObject> compilationUnit
                    = fileManager.getJavaFileObjectsFromFiles(Arrays.asList(TestEntity));
            JavaCompiler.CompilationTask task = compiler.getTask(
                    null,
                    fileManager,
                    diagnostics,
                    optionList,
                    null,
                    compilationUnit);

            if (task.call()) {

                System.out.println("Yipe");
                // Create a new custom class loader, pointing to the directory that contains the compiled
                // classes, this should point to the top of the package structure!
                URLClassLoader classLoader = new URLClassLoader(new URL[]{new File("./").toURI().toURL()});
                // Load the class from the classloader by name....
                Class<?> loadedClass = classLoader.loadClass("Testing.TestCreation");
                // Create a new instance...
                Object obj = loadedClass.newInstance();
                // Santity check
                if (obj instanceof DoStuff) {
                    // Cast to the DoStuff interface
                    DoStuff stuffToDo = (DoStuff) obj;
                    // Run it baby
                    stuffToDo.doStuff();

                }

            } else {
                for (Diagnostic<? extends JavaFileObject> diagnostic : diagnostics.getDiagnostics()) {
                    System.out.format("Error on line %d in %s%n",
                            diagnostic.getLineNumber(),
                            diagnostic.getSource().toUri());
                }
            }
            fileManager.close();
        } catch (IOException | ClassNotFoundException | InstantiationException | IllegalAccessException exp) {
            exp.printStackTrace();
        }
    }
    return true;
}

public static interface DoStuff {

    public void doStuff();
}

Answer 1

关于Glassfish的基本问题，您需要执行以下三项操作之一：使用war文件部署所需的jar文件，将这些jar文件放在Glassfish使用的类路径中，或将jar文件放在您目录下的lib目录中域。一般：

[Glassfish installation directory]\glassfish4\glassfish\domains\domain1\lib\appLib

或者你也可以把它们放在这里：

[Glassfish installation directory]\glassfish4\glassfish\lib

但前者是两者中最合适的。

这需要将jar文件添加到glassfish，还是需要其他解决方案

1 个答案: