1

chapter2/mysite/myapp/apis.py

@@ -18,3 +18,10 @@ def crawl_info(request):
 def platform_info(request):
     _info = get_platform_info()
     return _render_json(_info)
+
+def news(request):
+    news = News.objects.order_by('-id').all()[0:20]
+    data = serialize('json', news)
+    response = HttpResponse(json.dumps(data, ensure_ascii=False),
+                            content_type="application/json; charset=utf-8")
+    return response

chapter2/mysite/myapp/static/scripts/index.js

@@ -8,6 +8,12 @@ $(function(){
 
     //更新抓取信息
     setInterval(function(){
+        $.ajax('/myapp/api/news.json').done(function(datas){
+            for(var i in datas){
+                var data = datas[i];
+                console.log(i);
+            }
+        });
 
         $.ajax('/myapp/api/crawl_info.json').done(function(data){
             console.log(data);
@@ -26,10 +32,8 @@ $(function(){
             $('#mem_used').html(to_g(data.mem_used)+'G');
             $('#tasks_count').html(data.tasks);
         });
-
     }, 1500);
 
-
   init();
   init2();
     $("#el-dialog").addClass("hide");

chapter2/mysite/myapp/templates/myapp/crawl.html

@@ -149,7 +149,7 @@
                             </thead>
                             <tbody>
                             	{% for new in news %}
-                            <tr><td style="padding: 0px 11px;box-sizing: border-box;overflow: hidden;white-space: nowrap;text-overflow: ellipsis;">{{new.comment_id}}</td><td>{{new.content}}</td><td>{{new.comment_time}}</td></tr>
+                            <tr id="tr_news_{{forloop.counter0}}"><td style="padding: 0px 11px;box-sizing: border-box;overflow: hidden;white-space: nowrap;text-overflow: ellipsis;" class="news_comment_id">{{new.comment_id}}</td><td class="news_content">{{new.content}}</td><td class="news_comment_time">{{new.comment_time}}</td></tr>
                             	{% endfor %}
                             </tbody>
                         </table>

chapter2/mysite/myapp/urls.py

@@ -9,5 +9,6 @@ urlpatterns = [
     path('result', views.result, name='result'),
     path('api/crawl_info.json', apis.crawl_info),
     path('api/platform_info.json', apis.platform_info),
+    path('api/news.json', apis.news),
 
 ]