JSP生成静态页面HTML的一种方法(一)

http://www.easydone.cn/014/200603251129082732.htm

/*
 * Created on 2006-3-4
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package com.easydone.cn.tools.utils;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Date;

/**
 * @author Administrator
 *
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class MakeHtml {
private static long star = 0;
private static long end = 0;
private static long ttime = 0;

//返回html代码
public static String getHtmlCode(String httpUrl){
Date before = new Date();
star = before.getTime();
String htmlCode = "";
try {
InputStream  in;
URL url = new java.net.URL(httpUrl);
HttpURLConnection connection = (HttpURLConnection)url.openConnection();
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;
  while((currentLine=breader.readLine())!=null){
htmlCode+=currentLine;
  }
} catch (Exception e) {
e.printStackTrace();
}finally{
Date after = new Date();
end = after.getTime();
ttime = end-star ;
System.out.println("执行时间:"+ttime +"秒");
}
return htmlCode;
}
//存储文件
public static synchronized void writeHtml(String filePath,String info,String flag) {

PrintWriter pw = null;
try {
File writeFile = new File(filePath);
boolean isExit = writeFile.exists();
if (isExit != true) {
writeFile.createNewFile();
} else {
if (!flag.equals("NO")) {
writeFile.delete();
writeFile.createNewFile();
} 
}
pw = new PrintWriter(new FileOutputStream(filePath, true));
pw.println(info);
pw.close();
} catch (Exception ex) {
System.out.println(ex.getMessage());
}finally{
pw.close();
}
}

public static void main(String[] args) {
String url = "http://www.easydone.cn/index.htm";
writeHtml("c:/demo.htm",getHtmlCode(url),"NO");
}
}