String.getBytes()和对象序列化

    public void setex(final byte[] key, final int seconds, final byte[] value) {
        wRedisManager.request(new RedisCallback() {
            @Override
            public String doInRequest(Jedis jedis) {
                return jedis.setex(key, seconds, value);
            }
        });
    }

    private byte[] getByteArrayFromObject(Object o) throws Throwable {
        ObjectOutputStream out = null;
        try {
            ByteArrayOutputStream bo = new ByteArrayOutputStream();
            out = new ObjectOutputStream(bo);
            out.writeObject(o);
            out.flush();
            return bo.toByteArray();
        } finally {
            if (out != null)
                out.close();
        }
    }

    private Object getObjectFromByteArray(byte[] bytes) throws Throwable {
        ObjectInputStream in = null;
        try {
            ByteArrayInputStream bi = new ByteArrayInputStream(bytes);
            in = new ObjectInputStream(bi);
            return in.readObject();
        } finally {
            if (in != null)
                in.close();
        }
    }

主要观察一下str.getByte()和对象序列化生成的byte[]数组有啥不同，在redis中用redis *来看看值有啥不同

  private Object getRetFromCache(MethodInvocation invocation) throws Throwable {
        Object retValue = null;
        String cacheKey = getCacheKeyByAnno(invocation);
//         byte[] cacheValue =
//         redisService.get(getByteArrayFromObject(cacheKey));
        byte[] cacheValue = redisService.get(cacheKey.getBytes());
        if (cacheValue == null) {
            retValue = invocation.proceed();
//             redisService.setex(getByteArrayFromObject(cacheKey),
//             invocation.getMethod().getAnnotation(ControllerCacheAnno.class).timeout(),
//             getByteArrayFromObject(retValue));
            redisService.setex(cacheKey.getBytes(), invocation.getMethod().getAnnotation(ControllerCacheAnno.class)
                    .timeout(), getByteArrayFromObject(retValue));
        } else {
            retValue = getObjectFromByteArray(cacheValue);
        }
        return retValue;
    }