我试图在
java applet中运行此代码:
package test;
import java.applet.Applet;
import java.awt.Graphics;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
public class DrawExample extends Applet {
public void paint(Graphics g) {
try {
g.drawString("CODE:",50, 30);
URL yahoo = new URL("http://www.yahoo.com/");
URLConnection yc = yahoo.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream()));
String inputLine;
int i=65;
while ((inputLine = in.readLine()) != null) {
g.drawString(inputLine,50, i);
i=i+15;
}
in.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
如果我从Eclipse运行此代码作为applet,它运行正常,但是如果我试图在网页中嵌入它运行它我只得到“代码:”.代码冻结在这一行:
BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream()));
任何人都知道我做错了什么?谢谢!
最佳答案 这是签名小程序.未签名的Applet可以从发起它们的服务器打开网络连接.然后,Applet安全模型不允许打开与非始发服务器的网络连接
看看这里http://docs.oracle.com/javase/tutorial/deployment/applet/security.html
要确认这一点,您可以尝试从托管此applet的服务器打开流.