语义分析，内容为空允许更新

controllers/speech_recognition/speech_recognition.go

@@ -306,12 +306,12 @@ func (this *SpeechRecognitionController) Save() {
 		br.ErrMsg = fmt.Sprintf("参数有误, SpeechRecognitionId: %d", req.SpeechRecognitionId)
 		return
 	}
-	if len(req.Contents) == 0 {
+	/*if len(req.Contents) == 0 {
 		br.Ret = 200
 		br.Success = true
 		br.Msg = "操作成功"
 		return
-	}
+	}*/
 	req.FileName = strings.TrimSpace(req.FileName)
 	if req.FileName == "" {
 		br.Msg = "请输入文件名称"