java 静态化 mapping生产静态页面核心代码

package test;   
  
import java.io.ByteArrayOutputStream;   
import java.io.FileOutputStream;   
import java.io.IOException;   
import java.io.OutputStreamWriter;   
import java.io.PrintWriter;   
  
import javax.servlet.RequestDispatcher;   
import javax.servlet.ServletContext;   
import javax.servlet.ServletException;   
import javax.servlet.ServletOutputStream;   
import javax.servlet.http.HttpServletRequest;   
import javax.servlet.http.HttpServletResponse;   
import javax.servlet.http.HttpServletResponseWrapper;   
  
public class CreateHTMLTest {   
  
    /**  
     *   
     * @param request  
     * @param response  
     * @param jsp_url   
     * @param html_url  
     */  
    public static void createHTML(HttpServletRequest request,   
            HttpServletResponse response, String jsp_url, String html_url) {   
        FileOutputStream fos = null;   
  
        response.setContentType("text/html;charset=gb2312");   
        ServletContext context = request.getSession().getServletContext();   
        RequestDispatcher dispatcher = context.getRequestDispatcher(jsp_url);   
  
        final ByteArrayOutputStream baos = new ByteArrayOutputStream();   
        final ServletOutputStream stream = new ServletOutputStream() {   
            public void write(byte[] data, int offset, int length) {   
                baos.write(data, offset, length);   
            }   
  
            public void write(int b) throws IOException {   
                baos.write(b);   
            }   
        };   
  
        final PrintWriter pw = new PrintWriter(new OutputStreamWriter(baos));   
        HttpServletResponse rep = new HttpServletResponseWrapper(response) {   
            public ServletOutputStream getOutputStream() {   
                return stream;   
            }   
  
            public PrintWriter getWriter() {   
                return pw;   
            }   
        };   
        try {   
               
            dispatcher.include(request, rep);   
            pw.flush();   
            fos = new FileOutputStream(html_url);   
            baos.writeTo(fos);   
  
        } catch (ServletException e) {   
            e.printStackTrace();   
        } catch (IOException e) {   
            e.printStackTrace();   
        } finally {   
            try {   
                fos.close();   
            } catch (IOException e) {   
                e.printStackTrace();   
            }   
        }   
  
    }   
  
}