diff --git a/src/components/Portal/interactBar.vue b/src/components/Portal/interactBar.vue
index f95be3bb..474e3aa7 100644
--- a/src/components/Portal/interactBar.vue
+++ b/src/components/Portal/interactBar.vue
@@ -348,11 +348,18 @@ export default {
                 this.$store.dispatch("unicomPraises",false)
               }
               //自己给自己点赞不算
-              if(this.userInfo.aid!=this.data.sysCreateAid){
+              let authorId=this.data.sysCreateAid;
+              if(this.type==3){ //案例取作者id
+                 authorId=this.data.authorId;
+              }else if(this.type==1){ //课程取老师的id
+                // 目前页面上没有点赞的地方，课程有多个老师，也要给每个老师加吗？
+                 //console.log(this.data,'点赞中课程的传的数据')
+              }
+              if(this.userInfo.aid!=authorId){
                 let event = {
                   key: "CancelPraise",//
                   title: "取消点赞",//事件的标题
-                  parameters:"author:"+this.data.sysCreateAid,//用户自定义参数 name:value,name:value
+                  parameters:"author:"+authorId,//用户自定义参数 name:value,name:value
                   content: "取消点赞"+postData.title,//事件的内容
                   objId: this.data.id,//关联的id
                   objType: this.type,//关联的类型
diff --git a/src/views/study/coursenew.vue b/src/views/study/coursenew.vue
index 7968a9d9..81ae32ba 100644
--- a/src/views/study/coursenew.vue
+++ b/src/views/study/coursenew.vue
@@ -106,8 +106,8 @@
           </div>
         </div>
         <div class="course-control">
-            <div class="control-tab">
-              <div @click="heartabone" :class="tab == 1 ? 'control-tab-active' : ' '">
+            <div class="control-tab" v-if="contentList.length>0" >
+              <div v-if="contentList.length>1" @click="heartabone" :class="tab == 1 ? 'control-tab-active' : ' '">
                 <i class="el-icon-reading" style="margin-right:9px;margin-left:9px"></i>课程单元
               </div>
               <div @click="heartabtwo" :class="tab == 2 ? 'control-tab-active' : ' '">
@@ -121,7 +121,7 @@
                 <div class="catalog" v-if="courseInfo.type == 20">
                   <div v-for="(item, index) in catalogTree" :key="index" :name="index">
                     <div style="margin: 10px 0px;font-weight: 700;">{{item.section.name}}</div>
-                    <div class="units-info" :class="{'units-active':contentData.id == ele.id}" @click="showRes(ele,i,index)" v-for="(ele, i) in item.children" :key="i">
+                    <div class="units-info" :class="{'units-active':contentData.id == ele.id}"  v-for="(ele, i) in item.children" :key="i" @click="showRes(ele,i,index)">
                       <img v-if="contentData.id == ele.id" :src="`${webBaseUrl}/images/playicon.png`" alt=""> {{i+1}}.
                       <span>{{ ele.contentName }}</span>
                     </div>
@@ -129,7 +129,7 @@
                 </div>
                 <div v-else class="catalog">
                   <!-- contentList -->
-                  <div class="units-info" v-for="(list, index) in contentList" :key="index" :name="index"  @click="showRes(list,i,index)" :class="{'units-active':contentData.id == list.id}">
+                  <div class="units-info" v-for="(list, index) in contentList" :key="index" :name="index"  @click="showRes(list,-1,index)" :class="{'units-active':contentData.id == list.id}">
                     <!-- <div class="units-info" :class="{'units-active':contentData.id == ele.id}" @click="showRes(ele,i,index)" v-for="(ele, i) in item.children" :key="i"> -->
                     <img v-if="contentData.id == list.id" :src="`${webBaseUrl}/images/playicon.png`" alt=""> {{index+1}}.
                     {{ list.contentName }}
@@ -476,7 +476,8 @@
                  toResContent=c;
               }
             });
-            if(toResContent!=null){
+            if(toResContent){
+
               this.changePlayRes(toResContent);
               //this.onPlayerPlay();
               setTimeout(() => {
@@ -527,6 +528,7 @@
       },
       //替换播放区域
       changePlayRes(r){
+
         if(this.appendStudyOtherHandle!=null){
           window.clearTimeout(this.appendStudyOtherHandle);
         }
@@ -623,7 +625,7 @@
         })
       },
       showRes(r, i, index) { //i:子节下标，index:章下标
-        if (i != undefined && index != undefined && r.status < 9) {
+        if (i != undefined && i!=-1 && index != undefined && r.status < 9) {
           if (this.courseInfo.orderStudy) {
             //判断上个是否学完
             if (i == 0) {
@@ -1018,10 +1020,20 @@
         }
       },
       loadData() {
+        let $this=this;
         apiCoursePortal.detail(this.courseId, false).then(rs => {
           if (rs.status == 200) {
+            if(rs.result.contents.length==0){
+              $this.$message.error('课程内容已删除或课程已不再使用');
+              return;
+            }
             //设置必须的字段
+            if(rs.result.contents.length==1){
+               $this.tab=2;
+               //console.log('内容只有一个');
+            }
             if (rs.result.course.type == 20) { //有目录课程
+
               rs.result.sections.forEach(sec => {
                 sec.status = 0; //加入状态表未开始
                 rs.result.contents.forEach(c => {
@@ -1117,13 +1129,16 @@
               });
 
               if (this.courseInfo.type == 10) {
+                ///console.log(this.contentList[0],'ccccc11111')
                 this.showRes(this.contentList[0]);
               } else {
                 //如果没有，就定位第一项内容
                 if (playIndex === -1) {
                   // this.showRes(this.contentList[0]);
+                  //console.log(this.catalogTree,'ccccc22222')
                   this.showRes(this.catalogTree[0].children[0])
                 } else {
+                   //console.log(this.contentList[0],'ccccc3333')
                   this.showRes(this.contentList[playIndex]);
                 }
               }