public static void copyFile2(String path1, String path2) {

        Reader reader = null;

        Writer writer = null;

        try {

            // 打开流

            reader = new FileReader(path1);

            writer = new FileWriter(path2);

            // 进行拷贝

        int ch = -1;

        char [] arr=new char[1024];

        while ((ch = reader.read(arr)) != -1) {

            writer.write(arr,0,ch);

            }

        } catch (Exception e) {

            throw new RuntimeException(e);

        } finally {

            // 关闭流，注意一定要能执行到close()方法，所以都要放到finally代码块中

            try {

                if (reader != null) {

                    reader.close();

                }

            } catch (Exception e) {

                throw new RuntimeException(e);

            } finally {

                try {

                    if (writer != null) {

                        writer.close();

                    }

                } catch (Exception e) {

                    throw new RuntimeException(e);

                }

            }

        }

    }