修改提交考试后缓存接口拿不到id接口请求错误

src/pages/exam/examAnswer.vue

@@ -333,17 +333,19 @@ export default {
         })
     },
     getCache() {
-      action.Exam.getCache(this.$route.params.examId)
-        .then(res => {
-          const data = JSON.parse(res.answer)
-          if (data !== null && data !== 'null') {
-            this.questionParams.answerRecord = typeof data === 'string' ? JSON.parse(data) : data
-            this.getSignStu()
-          }
-        })
-        .catch(err => {
-          console.log(err)
-        })
+      if (this.$route.params.examId) {
+        action.Exam.getCache(this.$route.params.examId)
+          .then(res => {
+            const data = JSON.parse(res.answer)
+            if (data !== null && data !== 'null') {
+              this.questionParams.answerRecord = typeof data === 'string' ? JSON.parse(data) : data
+              this.getSignStu()
+            }
+          })
+          .catch(err => {
+            console.log(err)
+          })
+      }
     },
     getSignStu() {
       this.questionParams.question.question_items.map((item, index) => {
@@ -433,10 +435,10 @@ export default {
     .left {
       flex: 1;
       padding: 10px 20px 0 53px;
-      &.hidden{
+      &.hidden {
         overflow: hidden;
       }
-      &.scroll{
+      &.scroll {
         overflow-y: scroll;
         scrollbar-width: none;
         &::-webkit-scrollbar {
@@ -449,10 +451,10 @@ export default {
       width: 220px;
       background: #fff;
       padding: 0 20px;
-      &.hidden{
+      &.hidden {
         overflow: hidden;
       }
-      &.scroll{
+      &.scroll {
         overflow-y: scroll;
         scrollbar-width: none;
         &::-webkit-scrollbar {

src/pages/login/confirmInfo.vue

 <template>
   <div class="confirm-mian">
     <div class="con-info" v-if="!isTreaty">
-      <div class="head">{{ examInfo.name }}</div>
+      <div class="head">{{ examInfo.name || '' }}</div>
       <div class="box">
         <div class="info-form">
           <div class="tit">基本信息确认</div>
@@ -45,7 +45,7 @@
       </div>
     </div>
     <div class="explain-box" v-if="isTreaty">
-      <div class="head">{{ examInfo.name }}</div>
+      <div class="head">{{ examInfo.name || '' }}</div>
       <div class="exp-text">
         <div class="t">
           <!-- <div class="fl">为保证本考试的公平性和严肃性，本次考试将会：</div> -->
@@ -74,7 +74,7 @@ export default {
   data() {
     return {
       sInfo: JSON.parse(window.localStorage.getItem('studentInfo')),
-      examInfo: JSON.parse(window.localStorage.getItem('examInfo')),
+      examInfo: JSON.parse(window.localStorage.getItem('examInfo')) || {},
       form: {
         educational_background: ''
       },