我在Applet裡逐個byte讀入RAW灰階影像的值, 並將之存成Graphics再顯示到Applet... 在Eclipse平台時預覽一切沒問題, 但用IE6.0時影像就出不來... 請問各位大大可以幫我解決嗎??    以下是錯誤碼 ------------ Java(TM) Plug-in: 版本 1.4.2 使用 JRE 版本 1.4.2 Java HotSpot(TM) Client VM 使用者主目錄 = C:\Documents and Settings\Administrator    代理程式組態﹕自動代理配置      URL: http://proxy.cyut.edu.tw/proxy.pac    java.security.AccessControlException: access denied (java.io.FilePermission file:\C:\AppServ\www\ling\lung_493_600.raw read)         at java.security.AccessControlContext.checkPermission(Unknown Source)         at java.security.AccessController.checkPermission(Unknown Source)         at java.lang.SecurityManager.checkPermission(Unknown Source)         at java.lang.SecurityManager.checkRead(Unknown Source)         at java.io.FileInputStream.(Unknown Source) at java.io.FileInputStream.(Unknown Source) at ViewRawApplet.run(ViewRawApplet.java:39) at java.lang.Thread.run(Unknown Source) ------------------------------------------------- 以下是程式碼 ------------ import java.awt.*; import java.io.*; import javax.swing.JApplet; public class ViewRawApplet extends JApplet implements Runnable { private Image OffScreen; private Graphics drawOffScreen; public static int C; int a, i = 0, j = 0; BufferedInputStream bi; public void init() { OffScreen = createImage(493, 600); drawOffScreen = OffScreen.getGraphics(); } public void start() { (new Thread(this)).start(); } public void run() { drawOffScreen.clearRect(0, 0, 493, 600); try { bi = new BufferedInputStream(new FileInputStream("lung_493_600.raw")); //http://www.cyut.edu.tw/~s9314638/lung_493_600.raw while ((a = bi.read()) != -1) { drawOffScreen.setColor(new Color(a, a, a)); drawOffScreen.drawLine(j, i, j, i); j ; if (j % 493 == 0) { i ; j = 0; } } bi.close(); } catch (IOException e) { System.out.println(e); } repaint(); } public void update(Graphics g) { paint(g); } public void paint(Graphics g) { super.paint(g); g.drawImage(OffScreen, 0, 0, this); } }

因為applet要做file I/O有安全性的考量. 要做簽章 參考: http://www.javaworld.com.tw/blog/archives/ciyawasay/000304.html 如果不想這麼麻煩(像我就不會隨便接受別人的certification),請直接把你的raw file產生方式改為用 url 的方式放在applet的目錄讀入,如

====================
 String tmp = getDocumentBase();
 tmp = tmp.substring(0,tmp.lastIndexOf('/'));
 URL url = new URL(tmp   "/myimage.gif");
 Image myImg = getToolkit().getImage(url); 
====================

再做影像處理