diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 4fac8cc72..1039a648a 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -28,8 +28,9 @@ module ApplicationHelper
   end
 
   # MD5加密
-  def md5_encode(content)
-    Digest::MD5.hexdigest(content)
+  def base64_encode(content)
+    return nil if content.blank?
+    Base64.encode64(content)
   end
 
   def graduation_navigation graduation
diff --git a/app/views/users/videos/_video.json.jbuilder b/app/views/users/videos/_video.json.jbuilder
index eb5fafec5..ac030ce12 100644
--- a/app/views/users/videos/_video.json.jbuilder
+++ b/app/views/users/videos/_video.json.jbuilder
@@ -1,6 +1,6 @@
 json.extract! video, :id, :title, :cover_url, :file_url, :play_url, :vv, :user_id, :transcoded
-json.play_url md5_encode(video.play_url)
-json.file_url md5_encode(video.file_url)
+json.play_url base64_encode(video.play_url)
+json.file_url base64_encode(video.file_url)
 json.play_duration video.video_play_duration
 json.published_at video.display_published_at
 json.created_at video.display_created_at
diff --git a/public/react/src/modules/courses/coursesDetail/CoursesBanner.js b/public/react/src/modules/courses/coursesDetail/CoursesBanner.js
index 2bf7fb988..afd62118e 100644
--- a/public/react/src/modules/courses/coursesDetail/CoursesBanner.js
+++ b/public/react/src/modules/courses/coursesDetail/CoursesBanner.js
@@ -601,7 +601,7 @@ class CoursesBanner extends Component {
 
 
                   </div>
-               
+
 
                   <div className="clearfix ">
                     <div className="fl fl mr40 mb20" >
@@ -665,6 +665,10 @@ class CoursesBanner extends Component {
 
                     {/*}*/}
                     <div>
+                      {this.props.isStudent()?this.props.current_user&&this.props.current_user.course_is_end===true?"":<a className="fr user_default_btn user_blue_btn mr20 font-18"
+                                                                                                                          onClick={() => this.exitclass()}
+                      > 永久退出课堂 </a>:""}
+
                       {coursedata.switch_to_student === true ?
                         <Tooltip placement="bottom" title={
 													<pre>由教师/助教身份切换至学生<br/>可进行提交作品、答题等操作</pre>
@@ -723,9 +727,7 @@ class CoursesBanner extends Component {
                         )
                         : ""}
 
-                      {this.props.isStudent()?this.props.current_user&&this.props.current_user.course_is_end===true?"":<a className="fr user_default_btn user_blue_btn mr20 font-18"
-                                                 onClick={() => this.exitclass()}
-                      > 永久退出课堂 </a>:""}
+
 
                     </div>
 
diff --git a/public/react/src/modules/courses/coursesPublic/OneSelfOrderModal.js b/public/react/src/modules/courses/coursesPublic/OneSelfOrderModal.js
index 3ef957042..9c57cc88c 100644
--- a/public/react/src/modules/courses/coursesPublic/OneSelfOrderModal.js
+++ b/public/react/src/modules/courses/coursesPublic/OneSelfOrderModal.js
@@ -51,22 +51,21 @@ class OneSelfOrderModal extends Component{
 						let course_groups = this.props.course_groups;
 
 						course_groups.map((item, key) => {
-							console.log(item)
+
 							if (item.end_time === null) {
 								// if(this.props.starttimesend===undefined){
 								// 	item.end_time = moment(moment(handleDateString(this.props.staytime)).add(1, 'week')).format("YYYY-MM-DD HH:mm");
 								// }else{
 								// 	item.end_time = moment(handleDateString(this.props.starttimesend)).format("YYYY-MM-DD HH:mm");
 								// }
-								item.end_time = moment(moment(handleDateString(this.props.staytime)).add(1, 'week')).format("YYYY-MM-DD HH:mm");
-								newarr.push(item)
-							} else {
 								if(this.props.starttimesend){
 									item.end_time = moment(moment(handleDateString(this.props.starttimesend))).format("YYYY-MM-DD HH:mm");
 								}else{
 									item.end_time = moment(moment(handleDateString(this.props.staytime)).add(1, 'week')).format("YYYY-MM-DD HH:mm");
 								}
 								newarr.push(item)
+							} else {
+								newarr.push(item)
 							}
 						})
 						this.setState({
@@ -109,15 +108,14 @@ class OneSelfOrderModal extends Component{
 						course_groups.map((item,key)=>{
 							if(item.end_time===null){
 								// item.end_time = moment(moment(handleDateString(this.props.staytime)).add(1, 'week')).format("YYYY-MM-DD HH:mm");
-								item.end_time = moment(moment(handleDateString(this.props.staytime)).add(1, 'week')).format("YYYY-MM-DD HH:mm");
-								newarr.push(item)
-							}else{
 								if(this.props.starttimesend){
 									item.end_time = moment(moment(handleDateString(this.props.starttimesend))).format("YYYY-MM-DD HH:mm");
 								}else{
 									item.end_time = moment(moment(handleDateString(this.props.staytime)).add(1, 'week')).format("YYYY-MM-DD HH:mm");
 								}
 								newarr.push(item)
+							}else{
+								newarr.push(item)
 							}
 						})
 						this.setState({
@@ -401,7 +399,7 @@ class OneSelfOrderModal extends Component{
 										{/*{this.props.starttime}</span>*/}
 									{this.props.modaltype===undefined||this.props.modaltype===2?	<span className={"font-14 color979797"}>
 									{/*{this.props.endtime}*/}
-								  <span className={"mr10"}>截止时间1</span>
+								  <span className={"mr10"}>截止时间</span>
 									<DatePicker
 										dropdownClassName="hideDisable"
 										showTime={{ format: 'HH:mm' }}
@@ -446,7 +444,7 @@ class OneSelfOrderModal extends Component{
 							|| this.props.usingCheckBeforePost ?"":<div className="clearfix edu-txt-center lineh-40 F4FAFF">
 								<li style={{ width: '100%',padding: "0px 10px"}} className={"mb10"}>
 									<span style={{"float":"left","color":"#05101A"}} className="task-hide color-grey-name color-grey-9">分班名称</span>
-									<span style={{"float":"right","color":"#05101A","margin-right": "145px"}} className="task-hide color-grey-name color-grey-9">截止时间2</span>
+									<span style={{"float":"right","color":"#05101A","margin-right": "145px"}} className="task-hide color-grey-name color-grey-9">截止时间</span>
 								</li>
 							</div>}
 							{this.props.modaltype===undefined||this.props.modaltype===2
diff --git a/public/react/src/modules/paths/ShixunPathCard.js b/public/react/src/modules/paths/ShixunPathCard.js
index 66f236692..5afceaf30 100644
--- a/public/react/src/modules/paths/ShixunPathCard.js
+++ b/public/react/src/modules/paths/ShixunPathCard.js
@@ -43,7 +43,7 @@ class ShixunPathCard extends Component{
                         <p className="font-14 color-white">非试用内容，需要授权</p>
                       </div> */}
 
-                      <Link to={"/paths/"+item.id} className="squareImg" >
+                      <Link to={"/paths/"+item.id} className="squareImg"  target="_blank">
 												{/*target="_blank"*/}
                         <img alt="详情图片" src={setImagesUrl(item.image_url)}/>
                       </Link>
@@ -80,7 +80,7 @@ class ShixunPathCard extends Component{
             </div>
           )
         }
-        
+
       </div>
     )
   }
diff --git a/public/react/src/modules/paths/statics/index.js b/public/react/src/modules/paths/statics/index.js
index 5988f113d..55e391478 100644
--- a/public/react/src/modules/paths/statics/index.js
+++ b/public/react/src/modules/paths/statics/index.js
@@ -212,8 +212,8 @@ const App = (props) => {
       sorter: (a, b) => a.cost_time - b.cost_time
     }
   ];
-  
- 
+
+
   useEffect(() => {
     changeParams({
       page: 1,
@@ -307,7 +307,7 @@ const App = (props) => {
                   fetchData={handleFetchData}
                 />
               </TabPane>
-              <TabPane tab="实际使用情况" key="2">
+              <TabPane tab="实训使用情况" key="2">
                 <DisplayTableData
                   columns={sxColumns}
                   datas={other_info}
@@ -315,7 +315,7 @@ const App = (props) => {
                   fetchData={handleFetchData}
                 />
               </TabPane>
-              <TabPane tab="学习情况" key="3">
+              <TabPane tab="学员学习情况" key="3">
                 <DisplayTableData
                   columns={stColumns}
                   datas={other_info}
@@ -339,7 +339,7 @@ const mapStateToProps = (state) => {
     other_info,
     total,
   }
-  
+
 };
 
 const mapDispatchToProps = (dispatch) => ({