📄 counter.jsp
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<%@ page %><%//// The counter is stored in the Application object.// Since Application is shared between different server// threads, it needs to be synchronized to properly update// the state.//Integer count = null;synchronized (application) { count = (Integer) application.getAttribute("basic.counter"); if (count == null) count = new Integer(0); count = new Integer(count.intValue() + 1); application.setAttribute("basic.counter", count);}%><html><head><title>Counter</title></head><body bgcolor=#ffffff><h1>Welcome, visitor: <%= count %></h1></body></html>⌨️ 快捷键说明
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