场景

Centos中Redis的下载编译与安装(超详细)：

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/103967334

Redis的启动和关闭(前台启动和后台启动)：

Https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/103972348

RedisDesktopManager客户端可视化工具下载安装与使用：

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/103983147

Java中使用Jedis连接Redis对Key进行操作的常用命令：

https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/104915569

参考上面对Key进行操作的命令后，下面是对String进行常用操作。

注：

博客：
https://blog.csdn.net/badao_liumang_qizhi
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实现

新建Junit方法TestString，然后依次打开以下注释代码

    @Test
    public void TestString()
    {
        //System.out.println("增加数据key1-value1"+jedis.set("key1","value1"));
        //System.out.println("增加数据key2-value2"+jedis.set("key2","value2"));
        //System.out.println("增加数据key3-value3" + jedis.set("key3", "value3"));
        //System.out.println("删除数据key3"+jedis.del("key3"));
        //System.out.println("获取数据key2"+jedis.get("key2"));
        //System.out.println("在key2后面追加值"+jedis.append("key2","append"));
        //System.out.println("在key2后面追加值"+jedis.append("key2","append"));
        //System.out.println("增加多个键值：" + jedis.mset("key01", "value01", "key02", "value02", "key03", "value03"));
        //System.out.println("获取多个键值：" + jedis.mget("key01", "key02", "key03"));
        //System.out.println("删除多个键值："+jedis.del("key02","key03"));

        //新增键值对防止覆盖原先值
        //输出1
        //System.out.println(jedis.setnx("key4","badao"));
        //输出0
        //System.out.println(jedis.setnx("key4","liumang"));
        //输出badao
        //System.out.println(jedis.get("key4"));

        //新增键值对并设置有效时间--5秒
        //System.out.println(jedis.setex("key5",5,"liumang"));

        //获取原值并更新为新值
        System.out.println(jedis.getSet("key4","key4getset"));
        System.out.println(jedis.get("key4"));
    }