php-java-bridge-users Mailing List for PHP/Java Bridge

  On 9/12/2010 3:23 AM, php...@li... wrote:
> Hi,
>
> please take a look at the jsr223.jsp from the documentation download.
>
>
>> <?php require_once("java/Java.inc");
> It's a JSP, so you need to use JSP syntax:
>
>
> <%@page import="javax.script.*" %>
> <%@page import="php.java.script.servlet.PhpCompiledHttpScriptContext" %>
>
>
Thanks Jost for pointing me in the right direction!  One immediate 
question comes up however, where do I find  
php.java.script.servlet.PhpCompiledHttpScriptContext?  It is not in any 
of the jar files that I picked up....

    Marc...

Hi again,

insert a
	
  instance.getEngine().setContext(new
PhpCompiledHttpScriptContext(instance.getEngine().getContext(),this,application,request,response));

before calling instance.eval(). Otherwise JSR223 will use the default
context, which isn't very usable in a web-context.


Regards,
Jost Bökemeier

Hi Marta,

first of all, requestDispatcher.forward() lets you forward POST
requests. But I don't think this works with include().


Second: some application servers like Sun Java AS 9 have a very small
thread pool size. If you open a loop-back connection to the back end,
you risk to lock up the whole application server.

AS 9 pool size defaults to 5, which means that 3 concurrent user
requests *will* lock up your application server forever, if your
servlet opens a HTTP URL connection back to your application server.
Apache's pool is larger, it defaults to MaxChilds=150. Send it more
than 75 concurrent requests and it will stop responding forever.

So file_get_contents(localURL) or a loopback java.net.URLConnection to
the back end is not an option. Forget that.


If your JSP has been written properly, it separates the business- from
the UI logic. So it should be easy to call the business methods from
your PHP servlet as well. If not, your only option is to refactor the
JSP or to duplicate some of its functionality.

A third option (but rather lo-tech) is to ask the browser to deliver
the content of your JSP and to deliver it to your PHP servlet using
AJAX.


Regards,

Hi,

please take a look at the jsr223.jsp from the documentation download.


> <?php require_once("java/Java.inc");

It's a JSP, so you need to use JSP syntax:


<%@page import="javax.script.*" %>
<%@page import="php.java.script.servlet.PhpCompiledHttpScriptContext" %>

<%!
private static final CompiledScript script;
static {
	try {
		script =((Compilable)(new
ScriptEngineManager().getEngineByName("php"))).compile(
        "<?php echo eval(java_context()->get('script')); ?>");
	} catch (ScriptException e) {
		throw new RuntimeException("bleh!");
	}
}
private static final String evalPHP(String arg) {
    CompiledScript instance =
(CompiledScript)((java.security.cert.CertStoreParameters)script).clone();
    instance.getEngine().put("script", arg);
    OutputStream out = new ByteArrayOutputStream();
    Writer writer = new OutputStreamWriter(out);
    instance.getEngine.getContext().setWriter(writer);
    instance.eval();
    writer.close();
    return out.toString();
}
%>

<script type="text/javascript">
var = <%= evalPHP("hello world"); %>



Regards,
Jost Bökemeier