优化上传提示

src/components/Course/chooseCourseFile.vue

@@ -184,6 +184,8 @@
                 // this.cware.content.contentRefId=rs.result.id;
                 // this.cware.content.contentName=result.displayName;
                 // this.cware.content.content=result.filePath;
+              }else{
+                this.$message.error(rs.message);
               }
           });
         }else{