為了減輕伺服器壓力，將原來的文章管理系統由JSP檔案的從資料庫中取資料顯示改為由jsp產生靜態html檔案後直接存取html檔案。以下是一個簡單的範例
1.buildhtml.jsp
<%@ page contentType="text/html; charset=gb2312" import="java.util.*,java.io.*"%>
<%
try{
String title="This is Title";
String content="This is Content Area";
String editer="LaoMao";
String filePath = "";
filePath = request.getRealPath("/")+"test/template.htm";
//out.print(filePath+"<br>");
String templateContent="";
FileInputStream fileinputstream = new FileInputStream(filePath);//讀取模組文件
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);//取代掉模組中對應的地方
//out.print(templateContent);
// 依時間得檔名
Calendar calendar = Calendar.getInstance();
String fileame = String.valueOf(calendar.getTimeInMillis()) +".html";
fileame = request.getRealPath("/")+fileame;//產生的html檔案保存路徑
FileOutputStream fileoutputstream = new FileOutputStream(fileame);//建立檔案輸出流
byte tag_bytes[] = templateContent.getBytes();
fileoutputstream.write(tag_bytes);
fileoutputstream.close();
}
catch(Exception e){
out.print(e.toString());
}
%>
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">author：###author### </td>
</tr>
<tr>
<td>###content###
</td>
</tr>
</table>
</body>
</html>