34 lines
938 B
Plaintext
34 lines
938 B
Plaintext
<%@ page language="java" import="java.io.*" %>
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<%!
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int count = 0;
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String dbPath;
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public void jspInit() {
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try {
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dbPath = getServletContext().getRealPath("/WEB-INF/counter.db");
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FileInputStream fis = new FileInputStream(dbPath);
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DataInputStream dis = new DataInputStream(fis);
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count = dis.readInt();
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dis.close();
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} catch (Exception e) {
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log("Error loading persistent counter", e);
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}
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}
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public void jspDestroy() {
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try {
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FileOutputStream fos = new FileOutputStream(dbPath);
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DataOutputStream dos = new DataOutputStream(fos);
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dos.writeInt(count);
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dos.close();
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} catch (Exception e) {
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log("Error storing persistent counter", e);
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}
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}
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%>
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<%-- 下面是向浏览器输出的主要内容，它将成为产生的_jspService()方法的一部分 --%>
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<html><body>
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<% count++; %>
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Welcome! You are <%= count %> th visitor(s).
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</body></html> |