📄 lotterynumbers.java

📁 servlet初学者最好的例子……希望能对大家有所帮助

💻 JAVA

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//产生十个随机数
package servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@SuppressWarnings("serial")
public class LotteryNumbers extends HttpServlet {
    private long modTime;
    private int[] numbers=new int[10];
    
    public void init() throws ServletException {
		modTime=System.currentTimeMillis()/1000*1000;
		for(int i=0;i<numbers.length;i++)
			numbers[i]=randomNum();
	}
	
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		String title="your Lottery Numbers";
		String docType="<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">";
		out.println(docType);
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>"+title+"</TITLE></HEAD>");
		out.println("  <BODY BGCOLOR=\"#FDF5E6\">");
		out.print("<H1 ALIGN=CENTER>"+title+"</H1>");
		out.println("<B>Based upon extensive research of astro-illogical trends,psychic farces,we have chosen the "+numbers.length+" best lottery numbers for you.</B><OL>");
		for (int i=0;i<numbers.length;i++)
		{
			out.println("<LI>"+numbers[i]);
		}
	
		out.println("</OL>");
		out.println("</BODY></HTML>"); 
		out.flush();
		out.close();
	}

	public long getLastModified(HttpServletRequest request)
	{
		return(modTime);
	}
	private int randomNum()
	{
		return((int)(Math.random()*100));
	}
	
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
	}

}

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