将表单数据发送到 aspx 页面

Question

需要在网站上进行搜索

    url = r'http://www.cpso.on.ca/docsearch/'

这是一个 aspx 页面（我从昨天开始这个跋涉，对不起菜鸟问题）

使用 BeautifulSoup，我可以像这样获得 __VIEWSTATE 和 __EVENTVALIDATION：

    viewstate = soup.find('input', {'id' : '__VIEWSTATE'})['value']
    eventval = soup.find('input', {'id' : '__EVENTVALIDATION'})['value']

并且header可以这样设置：

    headers = {'HTTP_USER_AGENT': 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.13) Gecko/2009073022 Firefox/3.0.13',
'HTTP_ACCEPT': 'text/html,application/xhtml+xml,application/xml; q=0.9,*/*; q=0.8',
'Content-Type': 'application/x-www-form-urlencoded'}

如果你去网页，我真正想传递的唯一值是名字和姓氏......

    LN = "smith"
    FN = "a"
    data = {"__VIEWSTATE":viewstate,"__EVENTVALIDATION":ev,
    "ctl00$ContentPlaceHolder1$MainContentControl1$ctl00$txtLastName":LN, 
    "ctl00$ContentPlaceHolder1$MainContentControl1$ctl00$txtFirstName":FN}

所以把它们放在一起就像这样：

    import urllib
    import urllib2
    import urlparse
    import BeautifulSoup

    url = r'http://www.cpso.on.ca/docsearch/'
    html = urllib2.urlopen(url).read()
    soup = BeautifulSoup.BeautifulSoup(html)

    viewstate = soup.find('input', {'id' : '__VIEWSTATE'})['value']
    ev = soup.find('input', {'id' : '__EVENTVALIDATION'})['value']
    headers = {'HTTP_USER_AGENT': 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.13) Gecko/2009073022 Firefox/3.0.13',
        'HTTP_ACCEPT': 'text/html,application/xhtml+xml,application/xml; q=0.9,*/*; q=0.8',
        'Content-Type': 'application/x-www-form-urlencoded'}

    LN = "smith"
    FN = "a"
    data = {"__VIEWSTATE":viewstate,"__EVENTVALIDATION":ev,
            "ctl00$ContentPlaceHolder1$MainContentControl1$ctl00$txtLastName":LN, 
            "ctl00$ContentPlaceHolder1$MainContentControl1$ctl00$txtFirstName":FN}

    data = urllib.urlencode(data)
    request = urllib2.Request(url,data,headers)
    response = urllib2.urlopen(request)
    newsoup = BeautifulSoup.BeautifulSoup(response)
    for i in newsoup:
        print i

问题是它似乎并没有真正给我结果...不知道我是否需要为表单中的每个文本框提供每个值或什么...也许我只是做得不正确.无论如何，只是希望有人可以让我直截了当。我以为我有，但我希望看到医生名单和联系信息。

非常感谢任何见解，我以前使用过 beautifulsoup，但我认为我的问题只是发送请求并在数据部分中包含适量的信息。

谢谢！

Answer 1

听取了@pguardiario 的建议，走上了机械化路线……简单多了

    import mechanize

    url = r'http://www.cpso.on.ca/docsearch/'
    request = mechanize.Request(url)
    response = mechanize.urlopen(request)
    forms = mechanize.ParseResponse(response, backwards_compat=False)
    response.close()

    form = forms[0]

    form['ctl00$ContentPlaceHolder1$MainContentControl1$ctl00$txtLastName']='Smith'
    form['ctl00$ContentPlaceHolder1$MainContentControl1$ctl00$txtPostalCode']='K1H'

    print mechanize.urlopen(form.click()).read()

我距离完成还有很长的路要走，但这让我更进一步。