golang实现http服务器处理静态文件示例

本文实例讲述了golang实现http服务器处理静态文件的方法。分享给大家供大家参考，具体如下：

新版本更精简:

package main
import (
    "flag"
    "log"
    "net/http"
    "os"
    "io"
    "path"
    "strconv"
)
var dir string
var port int
var statichandler http.handler
// 初始化参数
func init() {
    dir = path.dir(os.args[0])
    flag.intvar(&port, "port", 80, "服务器端口")
    flag.parse()
    statichandler = http.fileserver(http.dir(dir))
}
func main() {
    http.handlefunc("/", staticserver)
    err := http.listenandserve(":"+strconv.itoa(port), nil)
    if err != nil {
        log.fatal("listenandserve: ", err)
    }
}
// 静态文件处理
func staticserver(w http.responsewriter, req *http.request) {
    if req.url.path != "/" {
        statichandler.servehttp(w, req)
        return
    }
    io.writestring(w, "hello, world!\n")
}

老版本:

package main
import (
    "flag"
    "log"
    "net/http"
    "os"
    "path"
    "strconv"
)
var dir string
var port int
var indexs []string
// 初始化参数
func init() {
    dir = path.dir(os.args[0])
    flag.intvar(&port, "port", 80, "服务器端口")
    flag.parse()
    indexs = []string{"index.html", "index.htm"}
}
func main() {
    http.handlefunc("/", staticserver)
    err := http.listenandserve(":"+strconv.itoa(port), nil)
    if err != nil {
        log.fatal("listenandserve: ", err)
    }
}
// 静态文件处理
func staticserver(w http.responsewriter, req *http.request) {
    file := dir + req.url.path
    fi, err := os.stat(file)
    if os.isnotexist(err) {
        http.notfound(w, req)
        return
    }
    if err != nil {
        http.error(w, err.error(), 500)
        return
    }
    if fi.isdir() {
        if req.url.path[len(req.url.path)-1] != '/' {
            http.redirect(w, req, req.url.path+"/", 301)
            return
        }
        for _, index := range indexs {
            fi, err = os.stat(file + index)
            if err != nil {
                continue
            }
            http.servefile(w, req, file+index)
            return
        }
        http.notfound(w, req)
        return
    }
    http.servefile(w, req, file)
}

希望本文所述对大家go语言程序设计有所帮助。