diff --git a/.gitignore b/.gitignore
index 2483976..78d8aee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 .idea/
 __pycache__/
+venv/
\ No newline at end of file
diff --git a/database.sqlite b/database.sqlite
index 4a528af..f78ebf8 100644
Binary files a/database.sqlite and b/database.sqlite differ
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..a858539
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,24 @@
+alembic==1.5.2
+click==7.1.2
+et-xmlfile==1.0.1
+Flask==1.1.2
+Flask-Migrate==2.6.0
+Flask-Script==2.0.6
+Flask-SQLAlchemy==2.4.4
+itsdangerous==1.1.0
+jdcal==1.4.1
+Jinja2==2.11.2
+Mako==1.1.4
+MarkupSafe==1.1.1
+numpy==1.19.5
+openpyxl==3.0.6
+pandas==1.1.5
+PyMySQL==0.10.1
+python-dateutil==2.8.1
+python-editor==1.0.4
+pytz==2021.1
+six==1.15.0
+SQLAlchemy==1.3.22
+Werkzeug==1.0.1
+xlrd==2.0.1
+XlsxWriter==1.3.7
diff --git a/service.py b/service.py
index 21708c5..0bb4563 100644
--- a/service.py
+++ b/service.py
@@ -366,8 +366,11 @@ def get_subject(subjectID):
 # ============================================================================================
 @app.before_request
 def before_request():
-    ip = IP
-    session['ip'] = ip
+    if request.headers.getlist("X-Forwarded-For"):
+        ip = request.headers.getlist("X-Forwarded-For")[0]
+    else:
+        ip = request.remote_addr
+    session['ip']=ip
     visitor = Visitor.query.filter_by(ip=ip).first()
     if visitor is None:
         visitor = Visitor(ip=ip)
@@ -762,4 +765,4 @@ def author(author_id):
 
 
 if __name__ == '__main__':
-    app.run(debug=True)
+    app.run(debug=True,host="0.0.0.0")
diff --git a/templates/article.html b/templates/article.html
index 3a962c8..b31f5cf 100644
--- a/templates/article.html
+++ b/templates/article.html
@@ -132,7 +132,7 @@ <h2 class="card-title">{{ article.title }}</h2><!--title-->
 
                 <p class="text-primary pp" onclick="dislike()">dislike</p>
                 <p id="dislike">{{ article.downvote }}</p>&nbsp;<br>
-        <p class="text-primary pp" onclick="dislike()">dislike</p> <p id="dislike">{{ article.downvote }}</p>&nbsp;
+<!--        <p class="text-primary pp" onclick="dislike()">dislike</p> <p id="dislike">{{ article.downvote }}</p>&nbsp;-->
 
         <!--New downloads-->
         <div style="float:right"><p class="text-primary">download number </p> <p id="download_number">{{ article.downloadcount }}</p></div><br>
@@ -193,8 +193,8 @@ <h2 class="card-title">{{ article.title }}</h2><!--title-->
             </div>
         {% endfor %}
     </div>
-
+    {% if comments %}
     <button class="btn btn-primary" type="submit" style="float:right" onclick="sort()">排序/取消排序</button>
-
+    {% endif %}
 
 {% endblock %}
diff --git a/templates/search.html b/templates/search.html
index 1d83679..ae2c943 100644
--- a/templates/search.html
+++ b/templates/search.html
@@ -25,7 +25,7 @@
             <td><a href="/article/{{ article.id }}">{{ Tool.highlight_matched_parts(article.title, kwd) | safe }}</a></td>
 	    <td>{{ Tool.highlight_matched_parts(article.abstract, kwd) | safe }}</td>
 	    <td>{{ Tool.highlight_matched_parts(article.highlight, kwd) | safe }}</td>
-            <td>{{ Tool.email_display_filter(article.author.mail) | safe }}</td>
+            <td><a href="{{ url_for('author', author_id=article.author_id) }}">{{ Tool.email_display_filter(article.author.mail) | safe }}</a></td>
 	    <td>{{ article.time.strftime('%Y-%m-%d %H:%M') | safe }}</td>
             <td>{{ article.metric }}</td>
         </tr>
diff --git a/templates/subject.html b/templates/subject.html
index 43c2de4..a3ae9d3 100644
--- a/templates/subject.html
+++ b/templates/subject.html
@@ -86,7 +86,7 @@
     {% for article in articles.items %}
         <tr>
             <td><a href="/article/{{ article.id }}">{{ article.title }}</a></td>
-        <td>{{ Tool.email_display_filter(article.author.mail) }}</td>
+            <td><a href="{{ url_for('author', author_id=article.author_id) }}">{{ Tool.email_display_filter(article.author.mail) }}</a></td>
         <td>{{ article.time.strftime("%Y-%m-%d %H:%M") }}</td>
         <td>{{ article.metric }}</td>
       </tr>