通过urlconnection调用html嵌入式小程序

Question

I have the following simple embedding applet html page:我有以下简单的嵌入小程序 html 页面：

<html>
    <applet code="WelcomeApplet.class" archive="WelcomeApplet.jar" width=300 height=30>
    </applet>
</html>

If I call for this page (ie the address is " http://192.168.0.2/WelcomeApplet.html "), the applet is correctly shown in the browser.如果我调用这个页面（即地址是“ http://192.168.0.2/WelcomeApplet.html ”），小程序在浏览器中正确显示。

I should call this page only by a servlet because the url page should not be shown, so in the doGet servlet method the following code is inserted:我应该只通过 servlet 调用此页面，因为不应显示 url 页面，因此在doGet servlet 方法中插入以下代码：

URL url = new URL("http://192.168.0.2/WelcomeApplet.html");    
URLConnection conn = url.openConnection();     
conn.setRequestProperty("Content-Language", "en-US");    
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");    
conn.setDoInput(true);    
conn.setUseCaches(false);    
conn.setAllowUserInteraction(true);    

BufferedInputStream buffer = new BufferedInputStream(conn.getInputStream());    
StringBuilder builder = new StringBuilder();    
int byteRead;    
while ((byteRead = buffer.read()) != -1)    
    builder.append((char) byteRead);    
buffer.close();    
out.write(builder.toString());

Everything works fine the html parsed is the same as above, but the applet is not shown, the JVM reports: " WelcomeApplet.class not found "一切正常，解析的 html 与上面相同，但未显示小程序，JVM 报告：“ WelcomeApplet.class not found WelcomeApplet.class”

It looks like is not a security problem, but an implementation stuff (i guess).看起来不是安全问题，而是实现的东西（我猜）。

Any idea?任何想法？

Thanks谢谢

Answer 1

The code attribute should name a Java class, not a file. code属性应命名为 Java class，而不是文件。 (The JAR file is named by the archive attribute.) Thus, the value of the code attribute should be just WelcomeApplet , assuming it is in the default namespace. （JAR 文件由archive属性命名。）因此，假设它在默认命名空间中， code属性的值应该只是WelcomeApplet 。

通过urlconnection调用html嵌入式小程序

问题描述

1 个解决方案

解决方案1
0 2011-07-04 07:49:24

通过urlconnection调用html嵌入式小程序

问题描述

1 个解决方案

解决方案1 0 2011-07-04 07:49:24

解决方案1
0 2011-07-04 07:49:24