事件详情上传的txt文档打开后乱码

src/views/eventLogUpload.vue

@@ -11,6 +11,7 @@
         :on-error="handleUploadError"
         :on-exceed="handleExceed"
         :on-success="handleUploadSuccess"
+        :on-change="handleChange"
         :show-file-list="false"
         :headers="headers"
         class="upload-file-uploader"
@@ -150,6 +151,18 @@ export default {
 
 
     },
+    handleChange(file, fileList) {
+      var _this = this;
+      if (file.raw) {
+        let reader = new FileReader()
+        reader.onload = function (e) {
+          _this.contentHtml = e.target.result;
+        };
+        reader.readAsText(file.raw,'gb2312');
+
+      }
+      console.log(file, fileList);
+    },
     eventLogUpload(eventCode) {
       this.eventCode=eventCode
       //上传页面弹出