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1) 把jacob.jar加载到工程里；
2) 把jacob.dll放入 JAVA_HOME\bin\ 和 JAVA_HOME\jre\bin目录下；
3) 把jacob.dll放入 C:\WINDOWS\system32\下；
常见错误解释：
1、找不到jacob.dll，配置路径问题（确认jacob.dll配置正确）
Exception in thread "……" java.lang.UnsatisfiedLinkError: no jacob in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1682)
at java.lang.Runtime.loadLibrary0(Runtime.java:822)
at java.lang.System.loadLibrary(System.java:992)
at com.jacob.com.Dispatch.<clinit>(Dispatch.java:36)
……
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
2、找不到资源文件，资源文件路径问题（查看程序中资源文件路径的设置，并检查资源文件的存放路径）
Exception in thread "……" com.jacob.com.ComFailException: Invoke of: Open
Source: Microsoft Word
Description: RCHITECTURE=x86
at com.jacob.com.Dispatch.invokev(Native Method)
at com.jacob.com.Dispatch.invokev(Dispatch.java:890)
at com.jacob.com.Dispatch.callN(Dispatch.java:526)
at com.jacob.com.Dispatch.call(Dispatch.java:606)
at WordControl.openDocument(Test06_08_01.java:3027)
……
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
3、jacob.dll或jacob.jar对应版本错误
com.jacob.com.ComFailException: A COM exception has been encountered:
At Invoke of: Documents
Description: An unknown COM error has occured.
at com.jacob.com.Dispatch.invokev(Native Method)
at com.jacob.activeX.ActiveXComponent.getProperty(ActiveXComponent.java)
at com.perlong.poa.common.dao.sqlserver.WordToHtml.change(WordToHtml.java:73)
at com.perlong.poa.common.dao.sqlserver.WordToHtml.main(WordToHtml.java:121)
com.jacob.com.ComFailException: A COM exception has been encountered:
At Invoke of: Quit
Description: An unknown COM error has occured.
at com.jacob.com.Dispatch.invokev(Native Method)
at com.jacob.activeX.ActiveXComponent.invoke(ActiveXComponent.java)
at com.perlong.poa.common.dao.sqlserver.WordToHtml.change(WordToHtml.java:92)
at com.perlong.poa.common.dao.sqlserver.WordToHtml.main(WordToHtml.java:121)
Exception in thread "main"
----最后
jacob 就是 JAVA-COM Bridge的缩写，它是在java与微软的com组件之间的桥梁，通过使用jacob自带的dll动态链接库通过JNI的方式实现了在sun java平台上的程序对com调用。jacob的作者照搬了微软java开发包中调用com组件的模式，并将它在sun java平台上实现，可谓是用心良苦啊。
来源：http://blog.sina.com.cn/s/blog_613963d10100odq2.html
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原文地址：http://www.cnblogs.com/yzuzhang/p/5134655.html
