我正在构建# -*- coding: utf-8 -*-
import urllib2
import urllib
import cookielib
from bs4 import BeautifulSoup
import datetime
import time
from urlgrabber.keepalive import HTTPHandler
def get_ViewState(soup):
view_input = soup.find(id="__VIEWSTATE")
return (view_input['value'])
def get_EventValidation(soup):
event_input = soup.find(id="__EVENTVALIDATION")
return event_input['value']
cookie = cookielib.CookieJar()
keepalive_handler = HTTPHandler()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookie),keepalive_handler)
urllib2.install_opener(opener)
__url = 'http://url.of.the.page'
opener.addheaders = [('User-agent','Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.104 Safari/537.36')
,('Connection', 'Keep-Alive')
,('Referer',__url)]
page = urllib.urlopen(__url).read()
soup = BeautifulSoup(page)
viewstate = get_ViewState(soup)
eventvalidation = get_EventValidation(soup)
postdata = urllib.urlencode({
'__EVENTTARGET':'',
'__EVENTARGUMENT:':'',
'__VIEWSTATE':viewstate,
'TxtStudentId':'xxxxxxx',
'TxtPassword':'xxxxxxx',
'BtnLogin':'login',
'__EVENTVALIDATION':eventvalidation
})
req = urllib2.Request(
url = __url,
data = postdata
)
result = opener.open(req)
print result.read()
# result = opener.open(req)
# print result.info()
# print result
# print result.read()
print "------------------------------------------------"
#after login, I need to get the scores table
__queryUrl = 'http://url.of.the.page?key=0'
now = datetime.datetime.now()
opener.addheaders = [('Referer', 'http://url.of.the.page?i='+now.strftime('%H:%M:%S'))]
result = opener.open(__queryUrl)
print result.read()
for item in cookie:
print 'Cookie：Name = '+item.name
print 'Cookie：Value = '+item.value
个应用，并且我试图从我的UWP获取每个文本块。
这是我的listview：
listview这是我尝试这样做的：
<ListView Grid.Row="1" BorderBrush="#0062AD" BorderThickness="1" ItemsSource="{Binding BusRoutes}" x:Name="Routes1" SelectionMode="None" IsItemClickEnabled="False" Padding="0 10 0 0">
<ListView.ItemTemplate>
<DataTemplate>
<Grid Width="400">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<TextBlock x:Name="startingPoint" Grid.Row="0" Grid.Column="0" Padding="0 10 0 10" TextAlignment="Center" HorizontalAlignment="Center" Text="{Binding hours}"/>
<TextBlock TextAlignment="Center" Grid.Row="0" Grid.Column="1" Padding="0 10 0 10" x:Name="endingPoint" HorizontalAlignment="Center" Text="{Binding hours2}" />
</Grid>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
在我的ItemClick事件中，我做到了这一点：
public T FindElementByName<T>(DependencyObject element, string sChildName) where T : FrameworkElement
{
T childElement = null;
var nChildCount = VisualTreeHelper.GetChildrenCount(element);
for (int i = 0; i < nChildCount; i++)
{
FrameworkElement child = VisualTreeHelper.GetChild(element, i) as FrameworkElement;
if (child == null)
continue;
if (child is T && child.Name.Equals(sChildName))
{
childElement = (T)child;
break;
}
childElement = FindElementByName<T>(child, sChildName);
if (childElement != null)
break;
}
return childElement;
}
我正在 this.UpdateLayout();
for (int i = 0; i < Routes1.Items.Count; i++)
{
var container = this.Routes1.ContainerFromIndex(i);
TextBlock endingPoint = FindElementByName<TextBlock>(container, "endingPoint");
endingPoint.Visibility = Visibility.Collapsed;
}
for (int i = 0; i < Routes1.Items.Count; i++)
{
var container = this.Routes1.ContainerFromIndex(i);
TextBlock startingPoint = FindElementByName<TextBlock>(container, "startingPoint");
startingPoint.SetValue(Grid.ColumnSpanProperty, 2);
}
。奇怪的是，当我试图拿一个System.ArgumentException例如textblock
我可以正常获得第一个文本块。为什么会这样？
我忘了提到这条例外情况爆发了：
var container = this.Routes1.ContainerFromIndex(0);