修改上传文件

src/views/second/summary/index.vue

       dataList: [],
       loading: false,
       file: {},
+      uploading:false
     };
   },
   created() {
       input.addEventListener(
         "change",
         (upload = (e) => {
+          input.removeEventListener('change',upload)
+          if(this.uploading){
+            this.$message({
+              type:"warning",
+              message:"正在上传"
+            })
+            return
+          }
+          this.uploading=true
           let file = e.target.files[0];
+          if(!file){
+            this.uploading=false
+            return 
+          }
           let MAXSIZE = 5 * 1024 * 1024;
           if (file.size > MAXSIZE) {
             this.$message.error("上传文件不得超过5M");
             })
             .catch((e) => {
               this.$message.error("上传文件失败");
-            }).catch(e=>{
+            }).finally(e=>{
+              this.uploading=false
               this.getFile()
             });
         })