1. 1. 个人中心—视图函数带标签页面参数tag
      @app.route('/usercenter/<user_id>/<tag>')
      def usercenter(user_id, tag):
         if tag == ‘1':
             return render_template('usercenter1.html', **context)
   2. 个人中心—导航标签链接增加tag参数
      <li role=“presentation”><a href=“{
      { url_for(‘usercenter’,user_id = user.id,tag = ‘1’) }}">全部问答</a></li>
   3. 个人中心—有链接到个人中心页面的url增加tag参数
      u <a href="{
      { url_for('usercenter',user_id = session.get('userid'), tag=1) }}">{
      { session.get('user') }}</a>
   4. @app.route('/usercenter/
               
                /
                
                 ')def usercenter(user_id,tag):    user = User.query.filter(User.id == user_id).first()    context = {        'usern': user.id,        'username': user.username,        'fankui':user.fankui,        'comment':user.comment    }    if tag =='1':      return render_template('usercenter1.html',**context)    elif tag == '2':       return render_template('usercenter2.html', **context)    else:        return render_template('usercenter3.html', **context)
                
               

       

   5. {% extends'danghangye.html' %}{% block title %}个人中心{% endblock %}{% block head %}{% endblock %}{% block main %}    
               
              
                
      fankui
              
                
      comment
              
                
      person
          
               
      {% block usercenter %}{% endblock %}{% endblock %}
                              {% block head %}{% endblock %}            
                                       
               
                      
                            
                            
                                
                               {% if usernamedd %}               
                 {
             {usernamedd}}                 
                注销                
                编辑                {% else %}                 
                login                 
                register                {% endif %}         
                fankui        
                首页                
                        
                
                搜索           
               
               
                               
                                   
                                   
                                   
                                       
                                       
                                       
                                   
                                       
                                       
                                   
                               
                        
                                       {% block main %}         
      {
             {username}}请登录
                
               
                              {% for foo in fankui %}                 
                
                                        {
             {foo.author.username}}评论({
             {foo.comment|length}})                 
                       {
             {foo.biaoti}}                 {
             {foo.creat_time}}                  
      {
             {foo.questionDetail}}
                      
                    {% endfor %}          
                        {% endblock %}