用JSP生成静态页面

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原作者: [db:作者] 来自: [db:来源] 收藏邀请

主要原理请参考http://blog.hunan2s.com/article.asp?id=233

经过一翻调试，成功了。。呵

附上源码。。

JDK 1.5 +ECLIPSE +TOMCAT 5.0.28 + MYSQL 5.0

数据库TEST　，表名news
字段：　id   int 自动增长　, Title  varchar(20) , Content  varchar(200)  , Author  varchar(10)

makeFile.jsp

<%
  Connection conn = DBconn.getConnection();
  Statement stmt = conn.createStatement();
  ResultSet Rs = stmt.executeQuery("select * from news");
  System.out.println("success");

%>

  <%

  String filePath = request.getRealPath("/")+"template.htm";

  System.out.println(filePath);

  String templateContent;
  FileInputStream fileinputstream = new FileInputStream(filePath);
  int lenght = fileinputstream.available(); //available() 返回可以不受阻塞地从此文件输入流中读取的字节数。

byte bytes[] = new byte[lenght];

fileinputstream.read(bytes); //read(byte[] b) 从此输入流中将最多 b.length 个字节的数据读入一个字节数组中。

fileinputstream.close();
//templateContent = new String(bytes);
String title;
String content;
String author;
while(Rs.next())
{
templateContent = new String(bytes);//如果不用这句，则替换一次之后，templateContent中就没有#**#标志了。所以要重新生成
title = Rs.getString("Title");
content = Rs.getString("Content");
author = Rs.getString("Author");
out.println(title+"********"+content+"****"+author);
out.print("以下是模板内容：<br>"+templateContent+"<br> 以下是置换以后的html内容<br><hr>");
templateContent=templateContent.replaceAll("#title#",title);
templateContent=templateContent.replaceAll("#author#",author);//替换掉模块中相应的地方
templateContent=templateContent.replaceAll("#content#",content);

// 根据时间得文件名
Calendar calendar = Calendar.getInstance();
String fileame = String.valueOf(calendar.getTimeInMillis()) +".html";
fileame = request.getRealPath("/")+"Html/"+fileame;//生成的html文件保存路径

out.print(templateContent);
FileOutputStream fileoutputstream = new FileOutputStream(fileame);//建立文件输出流
byte tag_bytes[] = templateContent.getBytes();
fileoutputstream.write(tag_bytes);
fileoutputstream.close();

}

if(conn!=null)
    {
        conn.close();
    }
    if(stmt!=null)
    {
        stmt.close();
    }

  %>

//数据库连接文件

import java.sql.*;
public class DBconn {

    public DBconn() {

        // TODO Auto-generated constructor stub
    }

    public static Connection getConnection()
    {
        Connection conn = null;

        try {
            Class.forName("org.gjt.mm.mysql.Driver");
            conn = DriverManager.getConnection("jdbc:mysql://" + "localhost" + "/" + "test" +
        "?useUnicode=true&characterEncoding=GB2312","root","111111");

        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
        return conn;
        }
    /*public static void main(String[] args) throws Exception
    {
        Connection con=getConnection();
        System.out.println(con.isClosed());

    }
*/
}

//　模板文件

template.htm
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>#title#</title>
</head>

<body>
<table width="380" height="107" border="0" cellpadding="0" cellspacing="1" bgcolor="#FFCC99">
  <tr>
    <td height="16" bgcolor="#FFCC99"><div align="center">#title#</div></td>
  </tr>
  <tr>
    <td bgcolor="#FFFFFF">#content#</td>
  </tr>
  <tr>
    <td height="13" align="right" bgcolor="#FFFFFF">#author#</td>
  </tr>
</table>
</body>
</html>