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From: <php...@li...> - 2010-09-16 01:32:12
|
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>
|
