在页面cs文件中写了个获取jsp返回的字符串,但取出来的却是空,直接在ie上输入jsp地址,页面输出aaa;bbb;ccc,但是确获取不到,哪位大侠能帮忙看看,获取函数如下: public static string httpWebResponseString(string url, string encode)
{
string str = "";
try
{
HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(url);
httpRequest.UserAgent = @"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.40607; .NET CLR 1.1.4322)"; HttpWebResponse httpResponse = (HttpWebResponse)httpRequest.GetResponse();
if (httpRequest.HaveResponse)
{
StreamReader sr;
if (encode != null && encode != "")
{
sr = new StreamReader(httpResponse.GetResponseStream(), Encoding.GetEncoding(encode));
}
else
{
sr = new StreamReader(httpResponse.GetResponseStream(), Encoding.Default);
}
str = sr.ReadToEnd();
sr.Close();
httpResponse.Close();
}
}
catch (Exception ex)
{ }
return str;
}
{
string str = "";
try
{
HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(url);
httpRequest.UserAgent = @"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.40607; .NET CLR 1.1.4322)"; HttpWebResponse httpResponse = (HttpWebResponse)httpRequest.GetResponse();
if (httpRequest.HaveResponse)
{
StreamReader sr;
if (encode != null && encode != "")
{
sr = new StreamReader(httpResponse.GetResponseStream(), Encoding.GetEncoding(encode));
}
else
{
sr = new StreamReader(httpResponse.GetResponseStream(), Encoding.Default);
}
str = sr.ReadToEnd();
sr.Close();
httpResponse.Close();
}
}
catch (Exception ex)
{ }
return str;
}
关注中,帮你顶!
public static string httpWebResponseString(string url, string encode)
{
string str = "";
try
{
HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(url);
httpRequest.Timeout = 666666;
httpRequest.UserAgent = @"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.40607; .NET CLR 1.1.4322)"; HttpWebResponse httpResponse = (HttpWebRequest)HttpWebRequest.Create(url);
//if (httpRequest.HaveResponse)
// {
StreamReader sr;
if (encode != null && encode != "")
{
sr = new StreamReader(httpResponse.GetResponseStream(), Encoding.GetEncoding(encode));
}
else
{
sr = new StreamReader(httpResponse.GetResponseStream(), Encoding.Default);
}
str = sr.ReadToEnd();
sr.Close();
httpResponse.Close();
// }
}
catch (Exception ex)
{ }
return str;
}
{
string str = "";
try
{//======
HttpWebRequest httpRequest = (HttpWebRequest)HttpWebRequest.Create(url);
httpRequest.Timeout = 666666;
httpRequest.UserAgent = @"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.40607; .NET CLR 1.1.4322)";
//===============晕.搞错位置了
HttpWebResponse httpResponse = (HttpWebResponse)httpRequest.GetResponse(); //if (httpRequest.HaveResponse)
// {
StreamReader sr;
if (encode != null && encode != "")
{
sr = new StreamReader(httpResponse.GetResponseStream(), Encoding.GetEncoding(encode));
}
else
{
sr = new StreamReader(httpResponse.GetResponseStream(), Encoding.Default);
}
str = sr.ReadToEnd();
sr.Close();
httpResponse.Close();
// }
}
catch (Exception ex)
{ }
return str;
}
试了一下可以取出数据楼主给个出不来的连接
可能是JSP页面的问题
所以这个,你只要注意一下编码问题就可以了。其它的应该无所谓的,不要考虑语言。
修改下或从自己系统里取到后再赋给它 你可能直接引用别人的 有时候会不行2 str = sr.ReadToEnd()取到的是返回页面的全部html格式的文档 要得到想要的内容 还要解析3 try catch使用不当
最怕就是捕获了异常啥操作也没有 对错也不知道
catch (Exception ex)
{
throw ex;
}
就算不直接抛出来 也要返回个状态啥的啊
catch (Exception ex)
{
return "出错了"+ex.Message;
}