java通过url读取文件内容示例
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2024-02-17 17:58:40
复制代码 代码如下:using system; using system.collections; using system.componentmo...
复制代码 代码如下:
using system;
using system.collections;
using system.componentmodel;
using system.data;
using system.drawing;
using system.web;
using system.web.sessionstate;
using system.web.ui;
using system.web.ui.webcontrols;
using system.web.ui.htmlcontrols;
using system.io;
using system.net;
using system.text;
using system.text.regularexpressions;
namespace emeng.exam
{
/// <summary>
/// getpagehtml 的摘要说明。
/// </summary>
public class getpagehtml : system.web.ui.page
{
protected system.web.ui.webcontrols.button webclientbutton;
protected system.web.ui.webcontrols.button webrequestbutton;
protected system.web.ui.webcontrols.textbox contenthtml;
protected system.web.ui.webcontrols.textbox urltext;
protected system.web.ui.webcontrols.button gettext;
private string pageurl = "";
private void page_load(object sender, system.eventargs e)
{}
#region web form designer generated code
override protected void oninit(eventargs e)
{
initializecomponent();
base.oninit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void initializecomponent()
{
this.webclientbutton.click += new system.eventhandler(this.webclientbutton_click);
this.webrequestbutton.click += new system.eventhandler(this.webrequestbutton_click);
this.gettext.click += new system.eventhandler(this.gettext_click);
this.load += new system.eventhandler(this.page_load);
}
#endregion
private void webclientbutton_click(object sender, system.eventargs e)
{
pageurl = urltext.text;
webclient wc = new webclient();
wc.credentials = credentialcache.defaultcredentials;
///方法一:
byte[] pagedata = wc.downloaddata(pageurl);
contenthtml.text = encoding.default.getstring(pagedata);
/// 方法二:
/// ***************代码开始**********
/// stream resstream = wc.openread(pageurl);
/// streamreader sr = new streamreader(resstream,system.text.encoding.default);
/// contenthtml.text = sr.readtoend();
/// resstream.close();
/// **************代码结束********
///
wc.dispose();
}
private void webrequestbutton_click(object sender, system.eventargs e)
{
pageurl = urltext.text;
webrequest request = webrequest.create(pageurl);
webresponse response = request.getresponse();
stream resstream = response.getresponsestream();
streamreader sr = new streamreader(resstream, system.text.encoding.default);
contenthtml.text = sr.readtoend();
resstream.close();
sr.close();
}
private void gettext_click(object sender, system.eventargs e)
{
pageurl = urltext.text;
webrequest request = webrequest.create(pageurl);
webresponse response = request.getresponse();
stream resstream = response.getresponsestream();
streamreader sr = new streamreader(resstream, system.text.encoding.default);
contenthtml.text = sr.readtoend();
resstream.close();
sr.close();
contenthtml.text = regex.replace(contenthtml.text," <[^>]*>", "");
//替换空格
contenthtml.text = regex.replace(contenthtml.text,"\\s+", " ");
}
}
复制代码 代码如下:
private void toolstripbutton1_click(object sender, eventargs e)
{
string path = @"http://www.abc.com/0211155400.xml";
httpwebrequest req = (httpwebrequest)webrequest.create(path);
req.timeout = 10000;
httpwebresponse rep = (httpwebresponse)req.getresponse();
using (streamreader myfile = new streamreader(rep.getresponsestream()))
{
string mystring = myfile.readtoend();
}
}
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