英文:
Golang creating dynamic functions (during run time)
问题
我需要帮助你在Go语言中开发一个Web服务器。你从http://golang.org/doc/articles/wiki/上找到了一段初始代码，特别是这个例子：
func handler(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Hi there, I love %s!", r.URL.Path[1:])
}
func main() {
http.HandleFunc("/", handler)
http.ListenAndServe(":8080", nil)
}
这段代码很简单，它的作用是将发送到"localhost"的GET请求重定向到handler函数，并输出HTML。
我遇到的问题是，在我的服务器中，我将在页面中使用JavaScript链接（特别是JQ和图像等）。所以当GET请求获取这些资源时，我需要将它们作为字节从驱动器中提取出来，并在handler中传递给客户端浏览器（就像上面的例子）。
**然而，在运行时之前，我不知道本地文件夹中有哪些文件，所以我无法预先创建这些处理程序。我想知道Go语言是否有一种在运行时动态创建函数的方法。**所以，我想的伪代码大致是这样的：
for file in files:
http.HandleFunc(file.location, handler)
如果我可能走错了方向，如果有人有关于在读取文件后为这些本地文件创建处理程序的想法，请告诉我。我也不知道有多少文件或者有多少个，但我可以使用Golang来读取所有文件。
谢谢！
英文:
I need some help developing a web server in go. I took initial code from http://golang.org/doc/articles/wiki/ , in particular, this example :
func handler(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Hi there, I love %s!", r.URL.Path[1:])
}
func main() {
http.HandleFunc("/", handler)
http.ListenAndServe(":8080", nil)
}
This code is pretty simple to follow as all it does is redirect a get request going to "localhost" to the handler function which outputs html.
The problem I am having is that with my server I will be using javascript linkage in my pages (particularly JQ, and images, etc). So when a GET request comes in for those artifacts I need to pull them from the drive as bytes and give them to the client browser in the handler (like above).
However; before run time I have no idea which files are located in local folders so I cannot pre-make these handlers. I was wondering if go had a way to dynamically make functions during run time. So the psuedocode I'm thinking of would go something like this:
for file in files:
http.HandleFunc(file.location, handler)
If maybe I'm going about this the wrong way and if anyone has ideas on creating handlers for these local files after reading them please let me know. I also do not have any idea of the amount of files or how many but I can use Golang to read all the files.
Thanks!
答案1
得分: -2
正如@Not_a_Golfer所说，可以使用FileServer来处理静态文件。在我的情况下，这非常适用，因为我有很多未知的文件。
英文:
as @Not_a_Golfer stated ; this can be done with FileServer for static files. In my situation this works quite well as I have numerous unknown files.
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