random file

handle/replyImage.go

@@ -1,12 +1,12 @@
 package handle
 
 import (
-	"WechatGateWay/global"
 	"WechatGateWay/third_part"
 	"WechatGateWay/utils"
 	"net/http"
 )
 
 func replyImage(msgContent MsgContent, timestamp, nonce string, w http.ResponseWriter) {
-	third_part.SendPicMid(msgContent.FromUsername, utils.RandMapValue(global.ImageMap))
+	//third_part.SendPicMid(msgContent.FromUsername, utils.RandMapValue(global.ImageMap))
+	third_part.SendPicFile(msgContent.FromUsername, "/app/data/"+utils.RandomFile("/app/data"))
 }

main.go

@@ -8,11 +8,14 @@ import (
 	"github.com/robfig/cron"
 	"github.com/spf13/viper"
 	"log"
+	"math/rand"
 	"net/http"
 	"os"
+	"time"
 )
 
 func init() {
+	rand.Seed(time.Now().UnixNano())
 	// 读取配置文件
 	workDir, _ := os.Getwd()
 	viper.SetConfigName("application")

utils/file.go

@@ -0,0 +1,17 @@
+package utils
+
+import (
+	"log"
+	"math/rand"
+	"os"
+)
+
+func RandomFile(dirname string) string {
+	fileList, err := os.ReadDir(dirname)
+	if err != nil {
+		log.Println(err)
+		return ""
+	}
+	return fileList[rand.Intn(len(fileList))].Name()
+
+}

utils/file_test.go

@@ -0,0 +1,12 @@
+package utils
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestRandomFile(tt *testing.T) {
+	dirname := "D:\\SynologyDrive\\SynologyDrive\\Pictures\\照片\\gg\\2022"
+	fmt.Println(RandomFile(dirname))
+
+}