com.jacob.com.ComFailException:无法共同创建对象

时间:2013-08-26 14:25:00

标签: java applet jacob

我正在使用jacob来加载系统证书。当我使用public static void main(String args[])运行代码或说简单的Java程序时,它工作正常,但当我尝试使用Applet运行代码时,我收到错误如下...

com.jacob.com.ComFailException: Can't co-create object
    at com.jacob.com.Dispatch.createInstanceNative(Native Method)
    at com.jacob.com.Dispatch.<init>(Dispatch.java:99)
    at com.jacob.activeX.ActiveXComponent.<init>(ActiveXComponent.java:58)
    at com.digicorp.root.SystemWrapper$1.run(SystemWrapper.java:23)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.digicorp.root.SystemWrapper.<init>(SystemWrapper.java:19)
    at com.digicorp.applet.DigitalCertificateApplet.ActiveXObject(DigitalCertificateApplet.java:56)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.plugin.javascript.Trampoline.invoke(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.plugin.javascript.JSClassLoader.invoke(Unknown Source)
    at sun.plugin2.liveconnect.JavaClass$MethodInfo.invoke(Unknown Source)
    at sun.plugin2.liveconnect.JavaClass$MemberBundle.invoke(Unknown Source)
    at sun.plugin2.liveconnect.JavaClass.invoke0(Unknown Source)
    at sun.plugin2.liveconnect.JavaClass.invoke(Unknown Source)
    at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$DefaultInvocationDelegate.invoke(Unknown Source)
    at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$3.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo.doObjectOp(Unknown Source)
    at sun.plugin2.main.client.LiveConnectSupport$PerAppletInfo$LiveConnectWorker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

我还使用http://netheadaches.wordpress.com/2012/04/22/jacob-cant-co-create-object/来解决上述问题。它解决了简单的java程序,但在使用applet时,同样的代码给出了错误。

在将jacob用于applet时,我是否有任何具体的事情要记在心里。我正在使用jacob-1.17

ActiveXComponent comp=new ActiveXComponent("Encryption.LoadCertificate");

并在互联网上的某个地方找到......

 activeXObj = (ActiveXComponent)AccessController.doPrivileged(new PrivilegedAction<Object>()
              {
                public Object run()
                {
                  return new ActiveXComponent(SystemWrapper.currentObjName);
                }
              });

1 个答案:

答案 0 :(得分:0)

您是否看过雅各布的applet示例? Download来源并查看它。您可以在以下位置找到它: samples\com\jacob\samples\applet。那里还有一个readme.txt文件。它描述了使jacob在applet中运行所涉及的所有步骤。简而言之:

  1. 在jnlp文件中指定本机lib(使用nativelib href)
  2. 签署所有罐子(因为java 1.7.0_17已经成为强制性的)
  3. 设置权限/使用策略文件