导出时，无法生成Excel

src/views/sensitive-control/data-view-message.vue

@@ -5,7 +5,7 @@
         <el-button class="each-button" type="primary" @click="hadnleSearch">查询</el-button>
         <el-button class="each-button" type="primary" @click="showExportModal" v-if="showExportBtn">导出</el-button>
         <el-button class="each-button" type="primary" @click="showAddConditionModal(true)">添加筛选条件</el-button>
-        
+
       </el-row>
       <template v-if="tableDataList && tableDataList.outModels && tableDataList.outModels.length > 0">
         <el-table
@@ -165,7 +165,7 @@
       // 获取图片验证码
       vm.getCaptcha();
 
-      
+
     },
     mounted() {
       vm.handleForbid();  // 禁止默认事件
@@ -182,7 +182,7 @@
         countDownNum: 60,  // 倒计时
         timer: null,       // 倒计时定时器
         afterParam: '',
-        dingdingNum: '', 
+        dingdingNum: '',
         mobilePhone: '',
         captchaImg: '',     // 图片验证码 url
         captchaToken: '',   // 图片验证码 token
@@ -247,7 +247,7 @@
       setWaterMark() {
         let bg = document.getElementsByClassName('data-view-message-wrap')[0];
         // bg.style.background = `url(${vm.waterMark}) repeat`;
-        bg.style.background = "url('" + vm.waterMark + "') repeat";  
+        bg.style.background = "url('" + vm.waterMark + "') repeat";
         bg.style.backgroundSize = '300px auto';
       },
       getRowClass({ row, column, rowIndex, columnIndex }) {
@@ -298,9 +298,9 @@
 
       // 获取编号和手机号
       getPhoneNum() {
-        // 请求查询接口 
+        // 请求查询接口
         let data = {
-          parame: vm.afterParam, 
+          parame: vm.afterParam,
         };
         let callback = (res) => {
           if(res.code == '000000'){
@@ -341,10 +341,10 @@
           // console.log('现在倒计时过程中...不可点击')
           return;
         }
-        
+
         // 获取短信验证码
         let data = {
-          parame: vm.afterParam, 
+          parame: vm.afterParam,
           pictureCode: vm.captchaCode,
           captchaToken: vm.captchaToken,
         };
@@ -354,7 +354,7 @@
             vm.timeCount();
           }else{
             vm.$message.error(res.message);
-            vm.getCaptcha(); 
+            vm.getCaptcha();
           }
         }
         vm.sendRequest( 'post', `/sensitive/mobileCheck/check/picturecode`, data, callback );
@@ -384,11 +384,11 @@
           vm.$message.error('请输入短信验证码');
           return;
         }
-        
+
         // 调用 /mobileCheck/check/mobilecode 接口
         // 校验 短信验证码
         let data = {
-          parame: vm.afterParam, 
+          parame: vm.afterParam,
           mobileCode: vm.smsCode,
         };
 
@@ -396,10 +396,10 @@
           if(res.code == '000000'){
             vm.searchTableVisible = true; // 短信验证码校验成功，显示背后的内容
             vm.getTableList();
-            
+
           }else{
             vm.$message.error(res.message);
-            vm.getCaptcha(); 
+            vm.getCaptcha();
             vm.captchaCode = '';
           }
         };
@@ -409,7 +409,7 @@
         // debugger;
         let data = {
           columnMap: {},
-          parame: vm.afterParam, 
+          parame: vm.afterParam,
           pageNo: vm.pageNo,
           pageSize: vm.pageSize,
         };
@@ -488,7 +488,7 @@
       },
       showExportModal(){
         console.log('导出。。。。。')
-        
+
         // 待接口提供后 请求接口获取excel, 再出发下载
         vm.checkExport();
 
@@ -496,7 +496,7 @@
       // 导出前的check
       checkExport() {
         let data = {
-          parame: vm.afterParam, 
+          parame: vm.afterParam,
         };
 
         let callback = (res) => {
@@ -514,7 +514,7 @@
       // 确定导出
       handleExport() {
         let data = {
-          parame: vm.afterParam, 
+          parame: vm.afterParam,
         };
 
         let callback = (res) => {
@@ -531,8 +531,11 @@
       },
       downloadFile(base64, fileName) {
         let a = document.createElement('a');
-        let uploadHref = 'data:application/xls;base64,' + base64;
+        let uploadHref = 'data:application/xlsx;base64,' + base64;
         a.setAttribute('href', uploadHref);
+        if (fileName == null || fileName == '') {
+            fileName = '数据.xlsx';
+        }
         let exportFileName = fileName;
         a.setAttribute('download', exportFileName);
         a.click();
@@ -558,7 +561,7 @@
 <style lang="less">
   .header{ height: 0 !important; overflow: hidden;  left:0 !important;}
   .sidebar{ width: 0; overflow: hidden; }
-  .content{ left: 0 !important;  top: 0 !important; } 
+  .content{ left: 0 !important;  top: 0 !important; }
   .el-message{
     min-width: 310px !important;
     width: 310px !important;
@@ -568,7 +571,7 @@
     width: 100%;
     height: 100%;
     display: flex; flex-direction: column; user-select: none;
-    
+
     .no-table-data{
       width: 100%;
       height: 400px;
@@ -675,4 +678,4 @@
     }
   }
 
-</style>
\ No newline at end of file
+</style>