日期:2014-05-17  浏览次数:20868 次

整理Jsp生成html文件
最近在用jsp生成html文件,整理出三种方法,希望对大家有所帮助。

方法1:
为了减轻服务器压力,将原来的文章管理系统由JSP文件的从数据库中取数据显示改为由jsp生成静态html文件后直接访问html文件。下面是一个简单的示例

1.buildhtml.jsp




<%@ page contentType="text/html; charset=gb2312" import="java.util.*,java.io.*"%>




<%

try{

String title="jsp生成静态html文件";

String content="小样,还搞不定你?";

String editer="hpsoft";

String filePath = "";

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

out.print(filePath);

String templateContent="";

FileInputStream fileinputstream = new FileInputStream(filePath);//读取模块文件

int lenght = fileinputstream.available();

byte bytes[] = new byte[lenght];

fileinputstream.read(bytes);

fileinputstream.close();

templateContent = new String(bytes);

out.print(templateContent);

templateContent=templateContent.replaceAll("###title###",title);

templateContent=templateContent.replaceAll("###content###",content);

templateContent=templateContent.replaceAll("###author###",editer);

//替换掉模块中相应的方法

out.print(templateContent);

// 根据时间得文件名

Calendar calendar = Calendar.getInstance();

String fileame = String.valueOf(calendar.getTimeInMillis()) +".html";

fileame = request.getRealPath("/")+fileame;//生成的html文件保存路径

FileOutputStream fileoutputstream = new FileOutputStream(fileame);//建立文件输出流

byte tag_bytes[] = templateContent.getBytes();

fileoutputstream.write(tag_bytes);

fileoutputstream.close();

}

catch(Exception e){

out.print(e.toString());

}




%>







模板文件




2. template.htm

<html>

<head>

<title>###title###</title>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

<LINK href="../css.css" rel=stylesheet type=text/css>

</head>

<body>

<table width="500" border="0" align="center" cellpadding="0" cellspacing="2">

<tr>

  <td align="center">###title###</td>

</tr>

<tr>

  <td align="center">作者:###author### </td>

</tr>

<tr>

  <td>###content###

</td>

</tr>

</table>

</body>

</html>




方法2:



<%@ page contentType="text/html; charset=gb2312"%>

<%

String[] flag = {"<$title$>","<$date$>","<$author$>","<$content$>"};

String title=request.getParameter("title");

String content=request.getParameter("content");

String editer="admin";

//Session.getAttribute("s_userName");

String filePath = "";

filePath = application.getRealPath("./adminroot/news.template");

String templateContent;

try{

templateContent = ReadTemplates.getTlpContent(filePath);

}catch(Exception e){

throw new Exception("模板信息读取失败。请联系系统管理员。");

}

templateContent = ReplaceAll.replace(templateContent,flag[0],title);

templateContent = ReplaceAll.replace(templateContent,flag[1],GetDate.getStringDate());

templateContent = ReplaceAll.replace(templateContent,flag[2],editer);

templateContent = ReplaceAll.replace(templateContent,flag[3],content);




// 根据时间得文件名与路径名




Calendar calendar = Calendar.getInstance();