Merge pull request #1054 from Hoto-Cocoa/patch-1

Fix mysql connection. This commit closes #1053.

app.py

@@ -118,11 +118,11 @@ if set_data['db_type'] == 'mysql':
     curs = conn.cursor()
 
     try:
-        curs.execute(db_change('create database ? default character set utf8mb4;')%pymysql.escape_string(set_data['db']))
+        curs.execute(db_change('create database ? default character set utf8mb4;'), set_data['db'])
     except:
         pass
 
-    curs.execute(db_change('use ?')%pymysql.escape_string(set_data['db']))
+    conn.select_db(set_data['db'])
 else:
     conn = sqlite3.connect(set_data['db'] + '.db')
     curs = conn.cursor()
@@ -745,4 +745,4 @@ if __name__ == "__main__":
     http_server = tornado.httpserver.HTTPServer(tornado.wsgi.WSGIContainer(app))
     http_server.listen(int(server_set['port']), address = server_set['host'])
 
-    tornado.ioloop.IOLoop.instance().start()
+    tornado.ioloop.IOLoop.instance().start()