获取Redis里的所有健值对

public static void main(String[] args) {  
    long start = System.currentTimeMillis();  
  
    //连接redis服务器，localhost:6379  
    Jedis redis = new Jedis("localhost", 6379);  
    // 获取所有key  
    Set<byte[]> keySet = redis.keys("*".getBytes());  
    byte[][] keys = keySet.toArray(new byte[keySet.size()][]);  
    // 获取所有value  
    byte[][] values = redis.mget(keys).toArray(new byte[keySet.size()][]);  
  
    // 打印key-value对  
    for (int i = 0; i < keySet.size(); ++i) {  
        System.out.println(byte2hex(keys[i]) + " --- " + byte2hex(values[i]));  
    }  
  
    long end = System.currentTimeMillis();  
    // 计算耗时  
    System.out.println("Query " + values.length + " pairs takes " + (end - start) + " millis");  
    redis.close();  
}  
  
private static String byte2hex(byte[] buffer) {  
    String h = "0x";  
  
    for (byte aBuffer : buffer) {  
        String temp = Integer.toHexString(aBuffer & 0xFF);  
        if (temp.length() == 1) {  
            temp = "0" + temp;  
        }  
        h = h + " " + temp;  
    }  
  
    return h;  
  
}