golang为LigerUI编写简易版本web服务器

package main
import (
 "io/ioutil"
 "log"
 "net/http"
 "os"
)
var zpath string = "D:/Download/jQuery LigerUI V1.3.2/Source/" //LigerUI安装路径
var zport string = "80"
var zsource_file = "source.config"
var zport_file = "port.config"
var staticHandler http.Handler
func Init() {
 if sourceExist(zport_file) {
 log.Println("Port file is " + zport_file)
 ztemp_port := filetostr(zport_file)
 if ztemp_port != "" {
 zport = ztemp_port
 }
 } else {
 log.Println("Port file not exist ,please set server port in file " + zport_file)
 log.Println("Server will use default port 80")
 }
 if sourceExist(zsource_file) {
 log.Println("Config file is " + zsource_file)
 ztemp_path := filetostr(zsource_file)
 if ztemp_path != "" {
 zpath = ztemp_path
 }
 } else {
 log.Println("Source file not exist ,please set LigerUI source path in file " + zsource_file)
 log.Println("Server will use default LigerUI path")
 }
 staticHandler = http.FileServer(http.Dir(zpath))
}
func indexPage(w http.ResponseWriter, req *http.Request) {
 log.Println(req.URL.Path)
 if req.URL.Path != "/" {
 staticHandler.ServeHTTP(w, req)
 return
 }
 //处理主页127.0.0.1
 req.URL.Path = "/index.htm"
 staticHandler.ServeHTTP(w, req)
}
func main() {
 Init()
 log.Println("LigerUI Source Path:")
 log.Println(zpath)
 zport_str := ""
 if zport != "80" {
 zport_str = ":" + zport
 }
 log.Println("Start LigerUI Server " + "127.0.0.1" + zport_str)
 http.HandleFunc("/", indexPage)
 err := http.ListenAndServe(":"+zport, nil)
 if err != nil {
 log.Fatal("ListenAndServe: ", err)
 }
}
func sourceExist(filename string) bool {
 _, err := os.Stat(filename)
 return err == nil || os.IsExist(err)
}
func filetostr(zfilename string) string {
 zbyte, err := ioutil.ReadFile(zfilename)
 zstr := ""
 if err == nil {
 zstr = string(zbyte)
 }
 return zstr
}

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