Sign java applet step by step [duplicate]

This question already has answers here: How do I sign a Java applet for use in a browser? (6 answers) Closed 9 years ago.

I'm writing a java applet that uses org.apache.commons.net.ftp.FTP to upload a file to an ftp server from a webpage

the applet works in eclipse..

My project contains Uploader.java, FtpUpload_thread.java and the commons-net-2.2.jar (to import org.apache.commons.net.ftp.FTP) files..

I compile my classes using the cmd command:

javac *.java -cp *.jar

I put the class in html:

<applet code="Uploader.class" codebase="./" archive="commons-net-2.2.jar" width="600" height="230"></applet>

but when I try to establish the connection I get the error:

java.secur开发者_如何学Pythonity.AccessControlException: access denied (java.net.SocketPermission /*myftp*/ resolve)

So I have to sign my applet..

• I make my jar file:

  jar cvf Uploader.jar Uploader.class FtpUpload_thread.class commons-net-2.2.jar

• I generate keys:

  keytool -genkey -alias signFiles -keystore compstore

and then I put the values that the program requires.. now I have the compstore database file

• I Sign the JAR File

  jarsigner -keystore compstore -storepass pass -keypass pass -signedjar UploaderS.jar Uploader.jar signFiles

and I have the UploaderS.jar file

so now I have my folder with:

Uploader.jar
UploaderS.jar
compstore
Uploader.class
commons-net-2.2.jar
FtpUpload_thread.class

it's all or I need other steps?

what is the html code to put my sign applet and run it with permissions?

thanks!

---

I would recommend utilizing the java plugin as opposed to the <applet> tag.

You will have to specify all the jars required by your class and use the signed archive

<object classid="clsid:CAFEEFAC-0016-0000-0000-ABCDEFFEDCBA" width="600" height="230">
    <param name="code" value="Uploader" />
    <param name="java_archive" value="UploaderS.jar, commons-net.jar" />
    <comment>
         <embed width="600" height="230" code="Uploader" type="application/x-java-applet;version=1.6" archive="UploaderS.jar, commons-net.jar">
             <noembed>
                 No Java Support.
             </noembed>
        </embed>
    </comment>
</object>

I would also recommend putting a package on your applet class.

I am not sure how to go about specifying the permissions to use by the applet.

Hope this helps.