java反射获取某接口的所有实现类

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@SuppressWarnings("unchecked") private List<Class<ScmJob>> getAllSubclassOfTestInterface() {        Field field = null;        Vector v = null;        List<Class<TestInterface>> allSubclass = new ArrayList<Class<TestInterface>>();        Class<TestInterface> scmJobClass =         ClassLoader classLoader = Thread.currentThread().getContextClassLoader();        Class<?> classOfClassLoader = classLoader.getClass();        try {            testInterfaceClass =                    (Class<TestInterface>) Class.forName("com.xxx.xxx.xxx.TestInterface");        } catch (ClassNotFoundException e) {            throw new RuntimeException(                    "无法获取到TestInterface的Class对象!查看包名,路径是否正确");         }        while (classOfClassLoader != ClassLoader.class) {            classOfClassLoader = classOfClassLoader.getSuperclass();        }        try {            field = classOfClassLoader.getDeclaredField("classes");        } catch (NoSuchFieldException e) {            throw new RuntimeException(                    "无法获取到当前线程的类加载器的classes域!");        }        field.setAccessible(true);        try {            v = (Vector) field.get(classLoader);        } catch (IllegalAccessException e) {            throw new RuntimeException(                    "无法从类加载器中获取到类属性!");        }        for (int i = 0; i < v.size(); ++i) {            Class<?> c = (Class<?>) v.get(i);            if (scmJobClass.isAssignableFrom(c) && !scmJobClass.equals(c) && !abstractScmJobClass                    .equals(c)) {                allSubclass.add((Class<ScmJob>) c);            }        }        return allSubclass;    }

获取到当前线程下的所有子类的类对象后，就可以neInstance，或者在bean中按照相应的命名规则查找到实例了。

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