Unity中GetButton和GetKey易错点

        Vector3 move = Vector3.zero;
        if (characterController.isGrounded)
        { 
            move.x = Input.GetAxis("Horizontal") * Time.deltaTime * Speed;
            move.z = Input.GetAxis("Vertical") * Time.deltaTime * Speed;
            if (Input.GetButton("Jump"))
            {
                move.y = JumpSpeed;
            }
        }
        Debug.Log(characterController.isGrounded);  
        move.y -= Gravity * Time.deltaTime;
        characterController.Move(move); 

GetButton则characterController.isGrounded为True，GetKey则为False，因为出现了UnityException: Input Key named: Jump is unknown UnityEngine.Input.GetKeyDown (System.String name) ，应修改为if(Input.GetKeyDown(KeyCode.Space))

GetButtonDown才是对应虚拟按钮的，GetKeyDown只对应键值。