用java将redis中的key value存到txt文件，导入到另一台服务器的redis中

引用Jedis，用java导出和导入

	/**
     * 获取redis键值对，存入txt文件，返回存入行数
     */
    public static int redisToTxt(Jedis jedis,String filePath){
        int lines=0;
        File file = new File(filePath); //文件路径，如果没有则要建立一个新的txt文件
        BufferedWriter writer;
        try {
            writer = new BufferedWriter(new FileWriter(file));
            Set set=jedis.keys("*");
            String key;
            String value;
            for(Object obj:set){
                key=obj.toString();
                value=jedis.get(key);
                writer.write("{\""+key+"\":"+value+"}\r\n"); // \r\n换行
                lines++;
            }
            writer.flush(); // 把缓存区内容刷入文件
            writer.close();
            return lines;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return lines;
    }

    /**
     * 获取txt文件内容，写入redis，返回写入行数
     * 用法：int i=txtToRedis(getJedisForSearch(),"D:\\fileTest.txt");
     */
    public static int txtToRedis(Jedis jedis, String filePath){
        int lines= 0;
        String key;
        String value;
        String str;
        try{
            File file = new File(filePath); //文件路径
            InputStreamReader inputStreamReader= new InputStreamReader(new FileInputStream(file), StandardCharsets.UTF_8);
            BufferedReader reader=new BufferedReader(inputStreamReader);
            while ((str=reader.readLine())!=null){
                JSONObject json= JSON.parseObject(str);
                key=json.keySet().iterator().next();
                value=json.get(key).toString();
                jedis.set(key,value);
                lines++;
            }
            return lines;
        }catch (Exception e){
            e.printStackTrace();
        }
        return lines;
    }