Topic: 如何加载web图像 |
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1.如何加载web图像 | Copy to clipboard |
Posted by: 一枝梅 Posted on: 2005-05-12 17:35 import java.applet.*; import java.awt.*; import java.net.*; public class ShowImage extends Applet { Image image; URL imagegur=null; public void init(){ String url="http://img.eoshow.com/eoshow/cn/ni2.gif"; } public void paint(Graphics g){ g.drawImage(image,30,10,this); } } 启动applet小程序为何是空白? |
2.Re:如何加载web图像 [Re: 一枝梅] | Copy to clipboard |
Posted by: why Posted on: 2005-05-12 21:20 What do you think it shouldn't be 空白? Do you know what it is doing? NOTHING! |
3.Re:如何加载web图像 [Re: 一枝梅] | Copy to clipboard |
Posted by: 一枝梅 Posted on: 2005-05-13 08:24 运行如下ShowImage.html后为空白 <HTML> <applet code=ShowImage.class width=300 height=120> </applet> </HTML> 不知错在哪里了,请指教 |
4.Re:如何加载web图像 [Re: 一枝梅] | Copy to clipboard |
Posted by: ljy0000 Posted on: 2005-05-13 09:54 在你的程序中,image对象未初始化,所以不会加载,应这样: 在paint方法的最前面加下列语句: imagegur=new URL(url); image=getImage(imagegur); |
5.Re:如何加载web图像 [Re: ljy0000] | Copy to clipboard |
Posted by: why Posted on: 2005-05-14 09:23 ljy0000 wrote:
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6.Re:如何加载web图像 [Re: 一枝梅] | Copy to clipboard |
Posted by: 一枝梅 Posted on: 2005-05-17 08:53 奇怪,我按照上面做了,但还是不成功。 首先出现小程序已载入,稍后就出现启动:未初始化小程序。 就是没有所要加载的内容. |
7.Re:如何加载web图像 [Re: 一枝梅] | Copy to clipboard |
Posted by: why Posted on: 2005-05-17 09:16 How did you run this applet? Using AppletViewer? Failed with IE? Then try Mozilla. J2SDK version? OS? ... At least you have to describe your configuration. Have you taken a look at 置顶索引??? |
8.Re:如何加载web图像 [Re: 一枝梅] | Copy to clipboard |
Posted by: 一枝梅 Posted on: 2005-05-17 15:12 appletviewer ShowImage.html java 2 platform standard edition1.5.0 |
9.Re:如何加载web图像 [Re: 一枝梅] | Copy to clipboard |
Posted by: 一枝梅 Posted on: 2005-05-17 16:17 我安装了Mozilla过后,还是不行。 我怀疑是不是网络助手捣鬼,我已卸载它有几个月了,但时不时 出现屏蔽的提示,如何彻底根除它。 |
10.Re:如何加载web图像 [Re: 一枝梅] | Copy to clipboard |
Posted by: 一枝梅 Posted on: 2005-05-18 08:20 j2SE runtime environment 5.0 update 2 |
11.Re:如何加载web图像 [Re: 一枝梅] | Copy to clipboard |
Posted by: 一枝梅 Posted on: 2005-05-18 08:24 appletviewer ShowImage.html后出现如下提示: java.security.AccessControlException: access denied (java.net.SocketPermission i mg.eoshow.com resolve) at java.security.AccessControlContext.checkPermission(AccessControlConte xt.java:269) at java.security.AccessController.checkPermission(AccessController.java: 401) at java.lang.SecurityManager.checkPermission(SecurityManager.java:524) at java.lang.SecurityManager.checkConnect(SecurityManager.java:1023) at sun.awt.image.URLImageSource.<init>(URLImageSource.java:41) at sun.applet.AppletImageRef.reconstitute(AppletImageRef.java:33) at sun.misc.Ref.get(Ref.java:46) at sun.applet.AppletViewer.getCachedImage(AppletViewer.java:377) at sun.applet.AppletViewer.getImage(AppletViewer.java:372) at java.applet.Applet.getImage(Applet.java:236) at ShowImage.init(ShowImage.java:18) at sun.applet.AppletPanel.run(AppletPanel.java:353) at java.lang.Thread.run(Thread.java:534) |
12.Re:如何加载web图像 [Re: 一枝梅] | Copy to clipboard |
Posted by: ljy0000 Posted on: 2005-05-18 09:06 我的也出现了这种情况,从提示看,大约是因为图片access denied(拒绝存取),看来是由于Applet安全机制起作用的原因,大家有对这种情况了解的吗? |
13.Re:如何加载web图像 [Re: 一枝梅] | Copy to clipboard |
Posted by: dengyinjun Posted on: 2005-05-25 02:53 Applet是不能访问本地资源的~~~~~~~~~~ |
14.Re:如何加载web图像 [Re: 一枝梅] | Copy to clipboard |
Posted by: 一枝梅 Posted on: 2005-05-25 11:51 如何让它能够访问? |
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