导出新增不能重复点击

src/components/Study/manager.vue

@@ -292,7 +292,7 @@
         <el-form-item>
           <el-button type="primary" @click="studyContentRecords">搜索</el-button>
         </el-form-item>
-        <el-button v-if="isHomeWork" style="padding:10px 15px;margin-bottom: 10px;" type="primary" @click="downLoad">导出全部作业</el-button>
+        <el-button v-if="isHomeWork" :disabled="isTrue" style="padding:10px 15px;margin-bottom: 10px;" type="primary" @click="downLoad">导出全部作业</el-button>
       </el-form>
       <el-table max-height="500" border :data="learningSituation.list" style="width: 100%">
         <el-table-column prop="aname" label="姓名" width="180"></el-table-column>
@@ -354,6 +354,7 @@ export default {
       downParams: {},
       typePress: false,
       isHomeWork: false,
+      isTrue: false,
       catalogRecordTree:[],
       catalogRecordList:[],
       resOwnerListMap:[],
@@ -510,6 +511,7 @@ export default {
         this.$message.warning('当前暂无数据');
         return
       }
+      this.isTrue = true;
       let params = {
         courseName:this.manageStudyData.name,
         courseId: this.manageStudyData.id,
@@ -534,6 +536,7 @@ export default {
           headers: { 'X-Access-Token': getToken() }
         }).then((response) => {
             if (response.status === 200) {
+              this.isTrue = false;
               if (!(response.headers['content-type']).startsWith('application/json')) {
                 this.resolveBlob(response, 'application/zip', `${params.courseName}【作业】`);
               } else {
@@ -547,6 +550,7 @@ export default {
               }
             }
           }).catch((error) => {
+            this.isTrue = false;
             // 错误处理
             console.log(error);
             this.$message.error(error.data ? error.data.message : error.toString());