動(dòng)態(tài)JSP頁(yè)生成靜態(tài)HTML的方法

import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class JspFilter implements Filter {
  public void destroy() {
    // TODO 自動(dòng)生成方法存根
  }
  public void doFilter(ServletRequest request, ServletResponse response,
      FilterChain chain) throws IOException, ServletException {
    HttpServletRequest hreq = (HttpServletRequest) request;
    HttpServletResponse hresp = (HttpServletResponse) response;
    String name = hreq.getRequestURL().substring(
          hreq.getRequestURL().lastIndexOf("/") + 1,
          hreq.getRequestURL().lastIndexOf("."));
    if (hreq.getRequestURL().indexOf(".jsp") != -1  (null == hreq.getParameter("type") || hreq.getParameter("type").equals(""))) {
        hresp.sendRedirect(hreq.getContextPath()+"/conversion?name="+hreq.getRequestURL());
        return ;
    }
    chain.doFilter(request, response);
  }
  public void init(FilterConfig arg0) throws ServletException {
    // TODO 自動(dòng)生成方法存根
  }
}

import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ConversionServlet extends HttpServlet {
  public ConversionServlet () {
    super();
  }
  public void destroy() {
    super.destroy(); // Just puts "destroy" string in log
    // Put your code here
  }
  public void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    response.setContentType("text/html");
    PrintWriter out = response.getWriter();
    //----獲取請(qǐng)求的URL
    String reqTarget = request.getParameter("name");
    //----指定對(duì)應(yīng)JSP的HTML名稱(chēng)
    String name = reqTarget.substring(reqTarget.lastIndexOf("/") + 1,reqTarget.lastIndexOf("."));
    //---判斷是否存在對(duì)應(yīng)的HTML文件
    File file = new File(request.getRealPath("/") + name + ".html");
    if (!file.exists()) {  //--------如果不存在對(duì)應(yīng)的HTML文件
      try {
        file.createNewFile();  //--------創(chuàng)建HTML文件
        //-------將JSP的內(nèi)容寫(xiě)入對(duì)應(yīng)的HTML文件內(nèi)
        InputStream in;
        StringBuffer sb = new StringBuffer("");
      //----注意這里，不能直接訪問(wèn)請(qǐng)求的URL，如果直接訪問(wèn)的話(huà)，會(huì)陷入死循環(huán)
        URL url = new java.net.URL(reqTarget.toString()+"?type=11");
        HttpURLConnection connection = (HttpURLConnection) url
            .openConnection();
        connection.setRequestProperty("User-Agent", "Mozilla/4.0");
        connection.connect();
        in = connection.getInputStream();
        java.io.BufferedReader breader = new BufferedReader(
            new InputStreamReader(in, "GBK"));
        String currentLine;
        FileOutputStream fos = new FileOutputStream(file);
        while ((currentLine = breader.readLine()) != null) {
          sb.append(currentLine);
          fos.write(currentLine.getBytes());
        }
        if (null != breader)
          breader.close();
        if (null != fos)
          fos.close();
        //---------------轉(zhuǎn)到與JSP對(duì)應(yīng)的HTML頁(yè)
        response.sendRedirect(request.getContextPath()+"/"+name + ".html");
      } catch (Exception e) {
        e.printStackTrace();
      }
    }else{
      //----------如果存在指定的HTML，直接跳轉(zhuǎn)到指定的HTML頁(yè)
      response.sendRedirect(request.getContextPath()+"/"+name + ".html");
    }
  }
  public void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    doGet(request, response);
  }
  public void init() throws ServletException {
    // Put your code here
  }
}

?xml version="1.0" encoding="UTF-8"?>
web-app version="2.4"
  xmlns="http://java.sun.com/xml/ns/j2ee"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
  http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
 filter>
  filter-name>jspfilter/filter-name>
  filter-class>com.beanutil.JspFilter/filter-class>
 /filter>
 filter-mapping>
  filter-name>jspfilter/filter-name>
  url-pattern>*.jsp/url-pattern>
 /filter-mapping>
 servlet>
  servlet-name>conversion/servlet-name>
  servlet-class>com.beanutil.ConversionServlet /servlet-class>
 /servlet>
 servlet-mapping>
  servlet-name>conversion/servlet-name>
  url-pattern>/conversion/url-pattern>
 /servlet-mapping>
/web-app>