下面代码执行没有反应，老师帮我看看，错在哪里？谢谢！
Dim url As String = "https://ggzy.hzctc.hangzhou.gov.cn/AfficheShow/Home?AfficheID=ed92e4c8-2b39-4869-9f98-3309d11fbf77&IsInner=0&IsHistory=0&ModuleID=22"
Dim baseUrl As String = "https://ggzy.hzctc.hangzhou.gov.cn"
Dim browser As System.Net.WebClient = Nothing ' 在外部声明变量
Try
' 添加SSL证书验证绕过
System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12
System.Net.ServicePointManager.ServerCertificateValidationCallback = Function() True
' 创建带Cookie的浏览器对象
browser = New System.Net.WebClient ' 在Try块内实例化
browser.Headers.Add("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36")
browser.Headers.Add("Accept-Language", "zh-CN,zh;q=0.9")
browser.Encoding = System.Text.Encoding.UTF8
' 获取网页内容并保存临时文件
Dim html As String = browser.DownloadString(url)
System.IO.File.WriteAllText(ProjectPath & "temp.html", html)
' ... [原有解析和下载逻辑保持不变] ...
Catch ex As Exception
MessageBox.Show("错误详情：" & vbCrLf &
ex.Message & vbCrLf &
"堆栈跟踪：" & vbCrLf &
ex.StackTrace)
Finally
' 安全释放资源
If browser IsNot Nothing Then
browser.Dispose()
End If
End Try
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[此贴子已经被作者于2025/3/16 10:25:16编辑过]
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Post By：2025/3/16 10:23:00 [只看该作者]
