📄 simplecounter.java
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import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class SimpleCounter extends HttpServlet
{
int count = 0;
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException
{
//建立输出的类型
res.setContentType("text/plain");
//得到输出流
PrintWriter out = res.getWriter();
int local_count;
synchronized(this) {
local_count = ++count;
}
//构造一个返回给客户浏览器的HTML页
out.println("<HTML>");
out.println("<HEAD><TITLE= A Simple Counter </TITLE></HEAD>");
out.println("<BODY>");
out.println("<h3 align=\"center\">" + "<font color=\"#0000FF\">");
out.println("Since Web server has startuped, the servlet has been
accessed " +"<h1>" + local_count + " times" + "</h1>");
out.println("</font></h3>");
out.println("</BODY></HTML>");
}
}
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