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ImagesDownloader/main.go

54 lines
1.2 KiB

package main
import (
"flag"
"fmt"
"log"
"net/http"
"os"
)
var (
downloadDir = flag.String("dir", "./downloads", "下载目录")
port = flag.String("port", "55830", "服务端口")
)
func main() {
flag.Parse()
// 创建下载目录
if err := os.MkdirAll(*downloadDir, 0755); err != nil {
log.Fatal("创建下载目录失败:", err)
}
// 设置路由
http.HandleFunc("/api/save_imgs", saveImagesHandler)
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, "index.html")
})
// 允许跨域
http.HandleFunc("/api/", enableCORS(saveImagesHandler))
fmt.Printf("HD4K下载服务启动\n")
fmt.Printf("下载目录: %s\n", *downloadDir)
fmt.Printf("API地址: http://127.0.0.1:%s/api/save_imgs\n", *port)
fmt.Printf("按 Ctrl+C 停止服务\n")
log.Fatal(http.ListenAndServe(":"+*port, nil))
}
func enableCORS(next http.HandlerFunc) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Access-Control-Allow-Origin", "*")
w.Header().Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS")
w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
if r.Method == "OPTIONS" {
w.WriteHeader(http.StatusOK)
return
}
next(w, r)
}
}