jsp中如何使用jsp:plugin加载Applet

周靖峰 2012-04-09 03:10:34

我首先建立一个ex7-11.jsp文件，内容如下



<%@ page contentType="text/html; charset=GB2312"%>

<html>

	<head>

		<title>

			用<jsp:plugin>加载Applet

		</title>

	</head>

	

	<body>

		<center>

			<font size="3" face="隶书" color="blue">

				用<jsp:plugin>加载Applet

			</font>

			<!-- 用plugin加载Applet -->

			<hr />

			<jsp:plugin type="applet" code="RollingMessage.class" height="60" width="550">

			</jsp:plugin>

		</center>

	</body>

</html>

然后建立一个RollingMessage.java，内容如下：



import java.awt.*;

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics;



public class RollingMessage extends java.applet.Applet implements Runnable

{

	Thread runThread;

	String s = "欢饮学习\"Web技术应用基础\"！";

	int s_length = s.length();

	int x_character = 0;

	Font wordFont = new Font("楷体_GB2312", Font.BOLD, 30);

	

	public void start()

	{

		if (runThread == null)

		{

			runThread = new Thread(this);

			runThread.start();

		}

	}

	

	public void stop()

	{

		if (runThread != null)

		{

			runThread.stop();

			runThread = null;

		}

	}

	

	public void run()

	{

		while (true)

		{

			if (x_character++ > s_length)

			{

				x_character = 0;

			}

			repaint();

			try

			{

				Thread.sleep(300);

			}

			catch (InterruptedException e)

			{}

		}

	}

	

	public void paint(Graphics g)

	{

		g.setFont(wordFont);

		g.setColor(Color.BLUE);

		g.drawString(s.substring(0, x_character), 8, 50);

	}

	

	public static void main(String[] args)

	{

		Frame f = new Frame("动画程序");

		RollingMessage drawTest = new RollingMessage();

		drawTest.init();

		drawTest.start();

		f.add("Center", drawTest);

		f.resize(400, 100);

		f.show();

	}

}

然后生成RollingMessage.class，将ex7-11.jsp和RollingMessage.class都放到webapps/test/目录下
然后在浏览器中输入http://localhost:8080/test/ex7-11.jsp
但是显示的结果中没有显示出applet
结果如图所示：