Redis 乱码解决与思考

梦里梦外; 2022-05-22 09:15 95阅读 0赞

### Question ###

前段时间，工作的时候。测试数据，有位同事测试老是失败。经过调查定位，发现是`Redis`内存储的数据格式不对。比较奇怪的是，远程`SSH`登陆到同一台机器操作，由于客户机的编码不一致，启动的时候会导致乱码的情况。特别是英文操作系统存储中文字符的时候。

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### Solution ###

编码的问题常常会遇到。在Java内主要通过如下的操作进行转码

### 方法1
    Byte[] bytes = "hello".getBytes("ISO8859-1");//""里面的参数为需要转化的编码，一般是ISO8859-1 
    String str = new String(bytes,"utf-8");//转化为utf-8编码 
    
    ### 方法2
    String str = new String("hello","utf-8");//转化为utf-8编码

PS: 或者可以使用之前说过的，序列化和反序列化的方法进行解决。

public class Stuent implement Serialize{
      private String name;
      public String getName(){}
      public String setName(String name){}
    }
    
    public class Demo{
      public static void main(String []agrgs){
        // Jedis attribute
        private static String address = "192.168.100.76";
        private static int port = 6379;
        private static int timeout = 10000;
        private static String auth = "admin";
    
        // JedisConfig attribute
        private static int max_active = 1024;
        private static int max_idle = 200;
        private static int max_wait = 10000;
        private static boolean test_on_borrow = true;
        private static JedisPool jedisPool = null;
    
        JedisPoolConfig config = new JedisPoolConfig();
                config.setMaxIdle(max_idle);
                config.setMaxWaitMillis(max_wait);
                config.setTestOnBorrow(test_on_borrow);
                config.setMaxTotal(max_active);
                jedisPool = new JedisPool(config,address,port,timeout,auth);
    
        Jedis jedis = config.getJedis();
        Stuent student = new Student();
        student.setName("Bruce");
        // 转换为Json格式存储
        jedis.set(key,JSONObject.toJSONString(person));
    
        // 获取对象 转换为需要的类型
        Stuent cacheObj = JSONObject.parseObject(jedis.get(key), Person.class);
    
      }
    }

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### Others ###

//对象序列化为字符串
        public static String objectSerialiable(Object obj){
            String serStr = null;
            try {
                ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();  
                ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);  
                objectOutputStream.writeObject(obj);    
                serStr = byteArrayOutputStream.toString("ISO-8859-1");  
                serStr = java.net.URLEncoder.encode(serStr, "UTF-8");  
    
                objectOutputStream.close();  
                byteArrayOutputStream.close();
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
    
            return serStr;
        }
    
        //字符串反序列化为对象
        public static Object objectDeserialization(String serStr){
            Object newObj = null;
            try {
                String redStr = java.net.URLDecoder.decode(serStr, "UTF-8");  
                ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(redStr.getBytes("ISO-8859-1"));  
                ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);   
                newObj = objectInputStream.readObject();
                objectInputStream.close();  
                byteArrayInputStream.close();
            } catch (UnsupportedEncodingException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (ClassNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            return newObj;
        }
    
    ### 方法二
    
     String[] input = {  
                    "### \u8bbe\u7f6eLogger\u8f93\u51fa\u7ea7\u522b\u548c\u8f93\u51fa\u76ee\u7684\u5730 ###",  
                    "### \u628a\u65e5\u5fd7\u4fe1\u606f\u8f93\u51fa\u5230\u63a7\u5236\u53f0 ###",  
                    "### \u628a\u65e5\u5fd7\u4fe1\u606f\u8f93\u51fa\u5230\u6587\u4ef6\uff1aheros.log ###",  
                    "###\u663e\u793aSQL\u8bed\u53e5\u90e8\u5206"  
            };  
             String output = new String(input.getBytes("iso-8859-1"),"utf-8");  
                System.out.println("转换后得结果："+output);

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### Reference ###

\[1\]. [(博客园)解决Jedis数据读取乱码问题][Jedis]  
\[2\]. [(ITEYE)redis 中文乱码][ITEYE_redis]  
\[3\]. [乱码转中文输出(ISO-8859-1 to UTF-8)][ISO-8859-1 to UTF-8]  
\[4\]. [(博客园)Jedis和JAVA对象的序列化和反序列化的使用][Jedis_JAVA]  
\[5\]. [(CSDN)Redis中文乱码问题的解决][CSDN_Redis]  
\[6\]. [添加到redis里的key乱码][redis_key]  
\[7\]. [(原理)Redis数据编码方式详解][Redis]  
\[8\]. [(原理)Redis Java客户端Jredis][Redis Java_Jredis]

[Jedis]: https://www.cnblogs.com/pier2/p/jedis-utf8.html
[ITEYE_redis]: http://www.iteye.com/problems/102408
[ISO-8859-1 to UTF-8]: https://blog.csdn.net/aitcax/article/details/41511735
[Jedis_JAVA]: https://www.cnblogs.com/liuchao102/p/4479352.html
[CSDN_Redis]: https://blog.csdn.net/sparkexpert/article/details/51166923
[redis_key]: https://ask.csdn.net/questions/165066
[Redis]: https://blog.csdn.net/snakorse/article/details/78154402
[Redis Java_Jredis]: https://blog.csdn.net/zhu_tianwei/article/details/44900955