Re: [Php-java-bridge-users] PHP script question

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  Anyone, Jost,  got any thoughts on why this PHP script is not working 
as I would expect it to? I am stuck until I can find a solution... 
Thanks...  Marc..

On 9/15/2010 6:31 PM, php...@li... wrote:
>    Jost, all -
>
> I have been doing more investigations into why the php-java bridge is
> not working as I would expect, but so far I got no joy in why it is
> failing...  So I thought I would send in a concise version of the jsp
> code/file I am trying to set up, and see if you or anyone else can spot
> what I am doing wrong....  (this also shows the interplay between jsp
> variables and the Javascript/PHP scripts, which is why I am choosing to
> use JSP)
>
> What I am discovering, is that as expected the method evalPHP is being
> called (twice). The call to the function - outputJavaScript in my PHP
> script does indeed return a Javascript statement (via the internal call
> to pass_to_php_backend), which is a String variable, and I can in fact
> put an echo statement just before the return and see that the expected
> Javascript statement is produced.  But what is NOT happening is that
> this returned string is produced in the output document, at the point of
> call to evalPHP.  (I have placed calls to alerts to show this is indeed
> what is happening, as can be seen in the following code.)
>
> Thoughts?  Thanks again in advance for helping me with this...   Marc...
>
>
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE html
>        PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
>       "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
> <%@ page import="java.io.*" %>
> <%@ page import="org.apache.commons.lang.*" %>
> <%@page import="javax.script.*" %>
> <%@page import="php.java.script.servlet.*" %>
>
> <head>
> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
> <title>Example</title>
>
> <%
>       String url = request.getAttribute("URL").toString();
>       String file = request.getAttribute("DocPath").toString();
>       String docRootDir = file.substring(0, file.lastIndexOf("/"));
>       String serverURL = request.getAttribute("ServerURL").toString();
>       String contextPath = "/" +
> request.getAttribute("ContextPath").toString();
>       String Dir = request.getAttribute("Dir").toString();
> %>
>
> <%
> //  My PHP script is defined here....
> String phpScript = "";
> phpScript = "require_once '" + Dir + "/java/Java.inc'; \n";
> phpScript += "require_once '" + Dir + "/contrib/php-utilities.php'; \n";
>
> phpScript += "function outputJavaScript() { \n";
> phpScript += "$IMConfig = array(); \n";
> phpScript += "$IMConfig['images_dir'] = '" + docRootDir + "/images'; \n";
> phpScript += "$IMConfig['allowed_image_extensions'] =
> array('jpg','gif','png'); \n";
> phpScript += "return pass_to_php_backend($IMConfig); \n";
> phpScript += "} \n";
>
> phpScript += "outputJavaScript(); \n";
> %>
>
> <%!
> 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) {
> private String evalPHP(String arg, HttpServletRequest request,
> HttpServletResponse response) {
>       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.getEngine().setContext((ScriptContext)new
>
> PhpCompiledHttpScriptContext(instance.getEngine().getContext(),this,this.getServletContext(),request,response));
>       try {
>           instance.eval();
>       } catch (ScriptException e) {
>           throw new RuntimeException("bleh!");
>       }
>       try {
>            writer.close();
>       } catch (IOException e) {
>           throw new RuntimeException("bleh!");
>       }
>      String result = out.toString();
>      return result;
> }
> %>
>
>
> <script type="text/javascript">
>        url =<%= "\"" + serverURL + "\"" %>  +<%= "\"" + contextPath +
> "\"" %>;
>       lang = "en";
> </script>
>
> <!--<script type="text/javascript" src="../Core.js"></script>  -->
> <script type="text/javascript" src="Loader.js"></script>
>
> <script type="text/javascript">
>          config = config ? config : new Backend.Config();
>          config.fullPage = true;
>          // pass the configuration to plugin
>          if (config.FileManager) {
>                  with (config.FileManager)
>                  {
>                      a = "<%= evalPHP(phpScript, request, response) %>";
>                      if (a == "") alert("No Output");
>                      else {
>                          alert("Output = " + a);
> <%= evalPHP(phpScript, request, response) %>
>                      }
>
>                  }
>          }
>       };
> </script>
> </head>
>
> <body>
> <!--   Content of body not important, removed -->
> </body>
> </html>
>
>
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