确保redis服务器是开启状态之后就可以运行程序。运行结果如下：
Maven中Spring-Data-Redis存储对象(redisTemplate)(二)
intln("==== getting objects from redis ====");
System.out.println("User should be in redis yet: " + userService.get(user1));
System.out.println("User should be in redis yet: " + userService.get(user2));
System.out.println("==== deleting objects from redis ====");
userService.delete(user1);
userService.delete(user2);
System.out.println("==== getting objects from redis ====");
System.out.println("User is not in redis yet: " + userService.get(user1));
System.out.println("User is not in redis yet: " + userService.get(user2));
}
}