jco problem with javax.servlet.ServletException

Question

when I test jco connect to sap, I got following error

 javax.servlet.ServletException: java.lang.UnsatisfiedLinkError: com.sap.conn.rfc.driver.CpicDriver.nativeSAP_CMINIT3([BLjava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;IIILjava/lang/String;Ljava/lang/String;Ljava/lang/String;I)I org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:912) org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:841) org.apache.jsp.notif_005fget_005fdetail_jsp._jspService(notif_005fget_005fdetail_jsp.java:99) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 

I already put sapjco3.dll and sapjco3.jar into lib, I have no idea with this problem.

Answer 1

1) Make sure the native JCo library is located in a folder which is part of the java.library.path.

2) Make sure you use the correct native JCo library for your system architecture (eg Linux 64bit on x86) and the sapjco3.jar from the same JCo distribution.

See also here: Exception while connecting SAP through Java