为什么http处理程序的参数似乎将其指针向后移动？ [重复]
问题描述：
This question already has an answer here:
I am new to go and still trying to figure out a few things.
func handler(w http.ResponseWriter, r *http.Request) {
}
Why is w not a pointer and on the other hand r is, since the handler function will end up writing into w and only read from r?
</div>
此问题已经存在 在这里有答案 p>
-
在Go HTTP处理程序中，为什么ResponseWriter是一个值，而Request却是一个指针？
5个答案
span>
li>
ul>
div>
我是新手，仍然尝试找出一些问题。 p>
func handler（w http.ResponseWriter，r * http.Request）{ } code> pre>是
w code>而不是指针，而r code>是指针，因为处理程序函数最终将写入w code>且仅从读取 > r code>？ p> div>
答
This question has already been answered in this post, but to keep it short.
w http.ResponseWriter is actually an interface that's backed by a non-exported pointer.
Whereas r *http.Request is an actual exposed struct.
I'd recommend following the above link to learn more why this is.