The information in this article applies to:
- Microsoft Win32 Virtual Machine for Java, version 1.0, 1.1
SUMMARY
This article demonstrates how one can use a Java class as an ActiveX server
side object with Microsoft Active Server Pages (ASP).
MORE INFORMATION
The following steps show how to use a Java Server Object with ASP:
- Install the Microsoft VM for Java build 1518 or newer (Visual J++ 1.1
comes with a build 1513). You can check the version of the Msjava.dll in
your windows/system or winnt/system32 directory to verify what build of
the Microsoft Virtual Machine you have in your system. You can download
the latest Virtual Machine from http://www.microsoft.com/java.
- Create your Java class, which will be created as a COM object.
For example:
// SIMPLE.JAVA-------------
public class Simple
{
public int SimpleFn ( int x )
{
return x * 2;
}
}
- Compile the .java file into a .class file, that is:
jvc simple.java
NOTE: This does not require that you use the Microsoft compiler for Java,
JAVAC works just fine.
- Copy the resulting .class file into the %windir%\java\trustlib or
%windir%\java\lib directory of the server machine. Note that you may
have to restart the Virtual Machine if you copy over a preexisting class
file. To restart the Virtual Machine on the server side; go to Microsoft
Internet Service Manager and stop and then restart all three IIS
services (that is, www, gopher, ftp).
copy simple.class \winnt\java\trustlib
- Register your Java class as a COM object on the server machine using the
JavaReg utility (available with VJ++ or the Microsoft SDK for Java).
This can also be done manually or by a setup program, "javareg
/register" is only creating registry entries:
javareg /register /class:Simple /progid:Simple
The /class: argument is the name of the .class file in your trustlib or
lib directory. The /progid: is the name that you will use in
CreateObject() to create your COM object.
Now your Java class is registered as a COM object and ready to use from
Active Server Pages.
- Create an .asp file in an HTTP shared directory on your computer. Be
sure that the directory the file is in has EXECUTE access. You can check
this in the "Microsoft Internet Service Manager." A simple ASP file
would look like:
SIMPLE.ASP-------------
<html><body>
<h1>Simple Test</h1>
The result from SIMPLE is:
<% Set SimpleObj = Server.CreateObject("Simple") %>
<% = SimpleObj.SimpleFn(5) %>
<hr>
</body></html>
------------------------
- Open your web browser and point to YOUR_MACHINE/simple.asp.
REFERENCES
For additional information on how to find the latest Microsoft Virtual
Machine, please see the following article in the Microsoft Knowledge Base:
ARTICLE-ID: Q163637
TITLE : Availability of Current Build of Microsoft VM for Java
Additional information and Active Server Pages samples can be found at
http://www.microsoft.com/IIS/UsingIIS/Developing/Samples/
For the latest Knowledge Base articles and other support information on
Visual J++ and the SDK for Java, see the following page on the Microsoft
Technical Support site:
http://support.microsoft.com/support/visualj/
http://support.microsoft.com/support/java/