创建符号链接

/*-

 * Copyright (C) 2014 Erik Larsson

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

//package com.nowjava;

import java.lang.reflect.Array;/**来 自 nowjava**/


import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;


public class Main {

    public static void createSymbolicLink(String linkPathString,

            String targetPathString) throws ClassNotFoundException,

            NoSuchMethodException, IllegalAccessException,

            IllegalArgumentException, InvocationTargetException,

            NoSuchFieldException {

        Class<?> fileSystemsClass = Class

                .forName("java.nio.file.FileSystems");

        Class<?> fileSystemClass = Class

                .forName("java.nio.file.FileSystem");

        Class<?> pathClass = Class.forName("java.nio.file.Path");

        Class<?> filesClass = Class.forName("java.nio.file.Files");/* 来自 时代Java公众号 - nowjava.com*/

        Class<?> fileAttributeClass = Class

                .forName("java.nio.file.attribute.FileAttribute");


        Object emptyFileAttributeArray = Array.newInstance(

                fileAttributeClass, 0);


        Method fileSystemsGetDefaultMethod = fileSystemsClass

                .getMethod("getDefault");

        Method fileSystemGetPathMethod = fileSystemClass.getMethod(

                "getPath", String.class, String[].class);

        Method filesCreateSymbolicLinkMethod = filesClass.getMethod(

                "createSymbolicLink", pathClass, pathClass,

                emptyFileAttributeArray.getClass());


        /* java.nio.file.FileSystem defaultFileSystem =

                   java.nio.file.FileSystems.getDefault(); */

        Object defaultFileSystemObject = fileSystemsGetDefaultMethod

                .invoke(null);


        /* java.nio.file.Path linkPath =

                   defaultFileSystem.getPath(linkPathString); */

        Object linkPathObject = fileSystemGetPathMethod.invoke(

                defaultFileSystemObject, linkPathString, new String[0]);


        /* java.nio.file.Path targetPath =

                   defaultFileSystem.getPath(targetPathString); */

        Object targetPathObject = fileSystemGetPathMethod.invoke(

                defaultFileSystemObject, targetPathString, new String[0]);


        /* java.nio.file.Files.createSymbolicLink(linkPath, targetPath); */

        try {

            filesCreateSymbolicLinkMethod.invoke(null, linkPathObject,

                    targetPathObject, emptyFileAttributeArray);

        } catch (InvocationTargetException e) {

            final Throwable cause = e.getCause();

            if (cause instanceof ClassNotFoundException) {

                throw (ClassNotFoundException) cause;

            } else if (cause instanceof NoSuchMethodException) {

                throw (NoSuchMethodException) cause;

            } else if (cause instanceof IllegalAccessException) {

                throw (IllegalAccessException) cause;

            } else if (cause instanceof IllegalArgumentException) {