利用bufferreader读取文件时解决gbk的字符有关问题

利用bufferreader读取文件时解决gbk的字符问题

/**
     * 读取.txt文件
     *
     * @param path 文件路径
     * @return txt文件内容
     * @throws IOException IOException
     */
    public static String readTxt(String path) throws IOException {
        File file = new File(path);
        if (!file.exists() || file.isDirectory()) {
            throw new FileNotFoundException();
        }
        BufferedReader reader =
                new BufferedReader(
                        new InputStreamReader(new FileInputStream(file), Constant.ENCODING_GBK));
        StringBuilder builder = new StringBuilder();
        String separator = System.getProperty("line.separator");
        String temp = reader.readLine();
        while (temp != null) {
            temp = temp.trim();
            builder.append(temp).append(separator);
            temp = reader.readLine();
        }
        reader.close();
        return builder.toString();

    }