Windows phone 8 c# httpclient第二次发送请求失败
本文关键字:请求 失败 第二次 httpclient phone Windows | 更新日期: 2023-09-27 17:53:08
我正在尝试一个简单的应用程序在Windows phone 8.1。我有一个按钮,并在第一次点击它发送一个请求,以插入数据通过url在php数据库。在第二点击它删除数据从同一表在数据库中通过另一个url在php。当我第一次运行它时。它从httpclient响应
向我发送以下响应 StatusCode:200, ReasonPhase:'ok',
version:0.0,content:
System.Net.Http.streamContent,headers:
{
Date:thu,04 jun 2015 08:29:50 GMT
server:apache
server:phusion_passage/4.0.10
server: mod_bwlimited/1.4/5
server:mod_fcgid/2.3.9
X-powered-by:PHP/5.4/5.4.36
Keep-Alive:timeout=3,max=30
connection:keep-alive
Transfer-encoding:chunked
content-Type:text/html
}
和第二次单击时,我也得到了相同的删除响应。如果我再次按下按钮,我如何得到以下msg
StatusCode:200, ReasonPhase:'ok',
version:0.0,content:
System.Net.Http.streamContent,headers:
{
X-powered-by:PHP/5.4/5.4.36
Keep-Alive:timeout=3,max=30
Transfer-encoding:chunked
content-Type:text/html
}
,显然没有数据插入到数据库中。
我在紧急启动它,因为这是一个大项目的一小部分。我的代码如下:
声明:
url = "http://demo.in/customer_info.php?";
url_delete = "http://demo.in/delete_noti.php?device_id=";
data1 = url + "device_id=4000";
data_delete = url_delete + "4000";
方法:
private async void sendData(string data)
{
// MessageBox.Show(data1);
using (HttpClient hc = new HttpClient())
{
var response = await hc.GetAsync(data);
MessageBox.Show(response.ToString());
hc.Dispose();
}
}
private async void deleteData(string data)
{
//MessageBox.Show(url_delete1);
using (HttpClient hc = new HttpClient())
{
var response = await hc.GetAsync(data);
//MessageBox.Show(hc1.ToString());
MessageBox.Show(response.ToString());
hc.Dispose();
}
}
用法:
private void btn_click(object sender, RoutedEventArgs e)
{
if (count == 0)
{
sendData(data1);
(sender as Button).Background = new SolidColorBrush(System.Windows.Media.Color.FromArgb(225, 247, 98, 15));
MessageBox.Show("sending");
// suspend(a);
count = 1;
}
else
{
deleteData(url_delete);
(sender as Button).Background = new SolidColorBrush(Colors.Black);
MessageBox.Show("deleting");
count = 0;
}
}
正如@Null指针所建议的,这可能是缓存问题。
你可以像他说的那样给url添加一个随机参数,或者如果你不或不能给url添加参数,你可以添加这行代码来忽略缓存:
hc.DefaultRequestHeaders.IfModifiedSince = DateTime.Now;