golang结构与接口方法实现与交互使用示例

1.定义结构 

// 结构定义
type VideoFrame struct {id   inthead []bytelen  int64data []byte
}

2.实现结构方法

// 生成结构字段的get与set方法
// ================================
func (v *VideoFrame) Id() int {return v.id
}func (v *VideoFrame) SetId(id int) {v.id = id
}func (v *VideoFrame) Head() []byte {return v.head
}func (v *VideoFrame) SetHead(head []byte) {v.head = head
}func (v *VideoFrame) Len() int64 {return v.len
}func (v *VideoFrame) SetLen(len int64) {v.len = len
}func (v *VideoFrame) Data() []byte {return v.data
}func (v *VideoFrame) SetData(data []byte) {v.data = data
}//================================

3.定义接口

// 接口定义
type myInterface interface {getVideoFrame() *VideoFrameFrameCount() int
}

4.结构实现接口方法

//实现接口方法func (v VideoFrame) getVideoFrame() *VideoFrame {mybyte := make([]byte, 32)copy(mybyte, "hello")vf := VideoFrame{id:   1111,head: mybyte,len:  128,data: []byte{01, 23, 45, 67, 89},}return &vf
}func (v VideoFrame) FrameCount() int {return 999
}

5.使用接口与结构方法

//使用接口方法vf := VideoFrame{}fmt.Println("===> FrameCount:", vf.FrameCount())fmt.Println("===>VideoFrame:", vf.getVideoFrame())//使用结构方法fmt.Println("===>VideoFrame->ID:", vf.Id())vf.SetId(8888)fmt.Println("===>VideoFrame-ID:", vf.Id())