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HomeBackend DevelopmentPython Tutorial用python写asp详细讲解

一、ASP的平反

想到ASP 很多人会说 “asp语言很蛋疼,不能面向对象,功能单一,很多东西实现不了” 等等诸如此类。 以上说法都是错误的,其一ASp不是一种语言是 微软用来代替CGI的一种web框架,只不过我们一直被扭曲在 vbs就是asp的默认语言,把ASP 和 vbs 之间划了等号。 其二 Asp 功能其实并不单一 此web 提供5个对象 (request、 response、 server、 session、 appliaction)这就是asp与生俱来的东西,除了这些东西都是Asp 所用的脚本级的东西。 而ASP 借助了 Asp.dll动态链接库,理论上可以试用一切脚本语言包括(vbscript 、jsscript、 actionscript、 perl 、python),所以说ASP是非常丰富的灵活的 web框架

二、为什么要用python写Asp

python 最近如火如荼,非常之火,他在各大领域都占有自己举足轻重的地位,web方面自然也少不了他。 Echosong 已经用过django 、web.py 等等python自己的web框架。由于工作需要 Echosong 很大一部分时间是在写ASP。 而vbs的Asp实在让人写得有种 想死感觉,很多功能借助各种 c 或者其他语言写的dll 稳定性难以考量,而echosong又是一个Python 的 十足迷、08年开始接触python 一直是做为一种爱好没断过,只是一直没用于工作。

三、开始把两小伙伴融合在一起

1、asp 的安装 : 随着IIS 的安装asp就成为了默认安装好的web框架

2、安装 activepython: ActivePython是由 ActiveState 公司推出的专用的 Python 编程和调试工具。

ActivePython 包含了一个完整的 Python 内核,直接调用 Python 官方的开源内核,此外还有 Python 编程需要用到的 IDE,并附加了一些 Python 的 Windows扩展,同时还提供了全部的访问 Windows APIs 的服务。ActivePython 虽然不像纯 Python 那样是开源的,但是也可以免费下载使用。(注意版本只能下载 2.5的,一开始echosong也不行下载了2.7 的版本 结果无情的500 个中缘由也不清楚,不够2.5的版本也够用了)
3、命令行运行 C:\Python25\Lib\site-packages\win32comext\axscript\client\pyscript.py;
4、完成上面两步就可以着手写python的Asp了

四 、简单的Demo
连接数据库文件 conn.asp (用pymssql连接mssql数据库)

 

代码如下:


  class MSSQL:
    def __init__(self,host,user,pwd,db):
        self.host = host
        self.user = user
        self.pwd = pwd
        self.db = db

    def __GetConnect(self):
        if not self.db:
            Response.write(NameError,"No connec Info")
        self.conn = pymssql.connect(host=self.host,user=self.user,password=self.pwd,database=self.db,charset="utf8")
        cur = self.conn.cursor()
        if not cur:
            Response.write(NameError,"connect Err")
        else:
            return cur
    def getCur(self):
        return self.__GetConnect()
    def ExecQuery(self,sql):
        cur = self.__GetConnect()
        cur.execute(sql)
        resList = cur.fetchall()
        self.conn.close()
        return resList

    def ExecNonQuery(self,sql):
        cur = self.__GetConnect()
        cur.execute(sql)
        self.conn.commit()
        self.conn.close()
gmssql = MSSQL(host="****",user="****",pwd="***",db="***")
gcur = MSSQL.getCur()
%>
 

这里 可以自由的import python的相关模块!!!

data.asp 文件调用conn.asp的数据连接执行sql语句 循环显示字段的值到页面

代码如下:








无标题文档


resList = gmssql.ExecQuery("select admin_Id, admin_UserId from admin")
%>

    
for (admin_Id,admin_UserId) in resList:
    Response.write(u"")
    Response.write(u"")
%>
管理员编号 管理账号
"+str(admin_Id)+""+str(admin_UserId)+"





用python写asp详细讲解

五、用python 写ASp的优势

1、高度代码复用: 可以写自己项目的模块,把平时常用的代码 写成 python的模块,然后服务器上所有的都可以借助 import 来调取

2、试用python优秀特征: python 强大的Python库 很多现成的功能直接用,而不要想传统asp(vbs脚本的)借助 很多 编译行语言的的dll来实现

3、完全的面向对象: vbs是面向过程的语言,对象的特征很弱,很多面向对象的思想不能用。

 

六、稳定性 和性能的考虑
做了压力测试 同一时间处理事务的能力,各方面参数强于vbs的,特别是在连接数据库用了些python 优秀开源的池处理模块,使得很多数据库的瓶颈减轻。(写博文的时候相关数据截图没有在此电脑上面)

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