赵沙沙,上海港湾学校学分制,怀旧影视论坛
一个是一个页面转换的类，该类通过静态函数changfile()来实现，动态页面到静态页面的转换。
using system;
using system.data;
using system.configuration;
using system.web;
using system.web.security;
using system.web.ui;
using system.web.ui.webcontrols;
using system.web.ui.webcontrols.webparts;
using system.web.ui.htmlcontrols;
using system.text;
using system.io;
/**////
/// summary description for htmlproxy
///
public class htmlproxy
...{
public htmlproxy()
...{
}
public static bool changefile(int id)
...{
string filename = httpcontext.current.server.mappath("post_" + id + ".html");
//尝试读取已有文件 stream st = getfilestream(filename);
//如果文件存在并且读取成功
if (st != null)
...{
using (st)
...{
streamtostream(st, httpcontext.current.response.outputstream);
return true;
//response.end();
}
}
else
...{
stringwriter sw = new stringwriter();
httpcontext.current.server.execute("forumdetail.aspx?pid=" + id, sw);
string content = sw.tostring();
//写进文件
try
...{
using (filestream fs = new filestream(filename, filemode.create, fileaccess.write, fileshare.write))
...{
using (streamwriter stw = new streamwriter(fs, httpcontext.current.response.contentencoding))
...{
stw.write(content);
}
}
return true;
}
catch ...{ return false; }
}
}
private static stream getfilestream(string filename)
...{
try
...{
datetime dt = file.getlastwritetime(filename);
timespan ts = dt - datetime.now;
if (ts.totalhours >1)
...{
//一小时后过期
return null;
}
return new filestream(filename, filemode.open, fileaccess.read, fileshare.read);
}
catch ...{ return null; }
}
static public void streamtostream(stream src, stream dst)
...{
byte[] buf = new byte[4096];
while (true)
...{
int c = src.read(buf, 0, buf.length);
if (c == 0)
return;
dst.write(buf, 0, c);
}
}
}
在页面文件中，forurl.aspx的后台代码如下：
protected void page_load(object sender, eventargs e)
...{
try
...{
int id = int.parse(request.querystring["pid"]);
if(htmlproxy.changefile(id))
...{
response.redirect("post_" + id + ".html");
}
else
...{
response.redirect("post.aspx?pid=" + id );
}
}
catch ...{
}
}
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