目前Tornado中的torndb模塊是不支持python3.x,因此須要修改部分torndb源碼便可正常使用
一、開發環境介紹python
操做系統:win8(64位),python版本:python3.6(32位),IDE:pycharmmysql
二、安裝torndb(這裏使用pip進行安裝)sql
pip install torndb
三、源碼修改數據庫
1)修改導入模塊python3.x
import pymysql.connections import pymysql.converters import pymysql.cursors # import MySQLdb.constants # import MySQLdb.converters # import MySQLdb.cursors
2)修改鏈接mysql的方式app
def reconnect(self): """Closes the existing database connection and re-opens it.""" self.close() self._db = pymysql.connect(**self._db_args)# MySQLdb.connect(**self._db_args) self._db.autocommit(True)
3)修改鏈接參數,以及遍歷字段類型時所使用的列表增長元素(python3使用append進行元素的添加,而不是使用加號)oop
# if MySQLdb is not None:
if pymysql is not None:
# Fix the access conversions to properly recognize unicode/binary
FIELD_TYPE = pymysql.connections.FIELD_TYPE # MySQLdb.constants.FIELD_TYPE
FLAG = pymysql.constants.FLAG# MySQLdb.constants.FLAG
CONVERSIONS = copy.copy (pymysql.converters.conversions)# (MySQLdb.converters.conversions)
field_types = [FIELD_TYPE.BLOB, FIELD_TYPE.STRING, FIELD_TYPE.VAR_STRING]
if 'VARCHAR' in vars(FIELD_TYPE):
field_types.append(FIELD_TYPE.VARCHAR)
for field_type in field_types:
# CONVERSIONS[field_type] = [(FLAG.BINARY, str)] + CONVERSIONS[field_type]
CONVERSIONS[field_type] = [(FLAG.BINARY, str)].append(CONVERSIONS[field_type])
# Alias some common MySQL exceptions
IntegrityError = pymysql.IntegrityError# MySQLdb.IntegrityError
OperationalError = pymysql.OperationalError# MySQLdb.OperationalError
def __init__(self, host, database, user=None, password=None, max_idle_time=7 * 3600, connect_timeout=10,# 設置鏈接超時時間,時間是秒 time_zone="+0:00", charset = "utf8", sql_mode="TRADITIONAL"):
def query(self, query, *parameters, **kwparameters):
"""Returns a row list for the given query and parameters."""
cursor = self._cursor()
try:
self._execute(cursor, query, parameters, kwparameters)
column_names = [d[0] for d in cursor.description]
return [Row(itertools.zip_longest(column_names, row)) for row in cursor]
finally:
cursor.close()
四、測試使用測試
class IndexHandler(RequestHandler): def get(self, *args, **kwargs): # get返回的是字典對象 ret = self.application.db.get('select title from houses where id = 2') self.write(ret['title']) if __name__ == '__main__': options.parse_command_line() app = Application([ (r'/', IndexHandler), ], debug=True) # 創建數據庫鏈接 app.db = torndb.Connection( host='127.0.0.1', database='demo', user='you_ruser', password='your_password' ) http_server = httpserver.HTTPServer(app) http_server.listen(options.port) ioloop.IOLoop.current().start()