Using PHP as a Spring MVC View via Quercus(转)
原贴：http://blog.caucho.com/2009/04/14/using-php-as-a-spring-mvc-view-via-quercus/
This week, I’ve been prepping for a talk on Quercus in which I promised to show a demo of Spring MVC using a PHP view.So that means that I actually had to do it. Turns out it was quite easy and PHP makes for a very nice, compact view technology for Spring MVC.This is a bit of tease since the code for this won’t go out until at least next week, but since a number of people have been asking for this a while, I thought I’d give a preview…
First, let me show how it looks by using the sample “ImageDB” application that ships with Spring.Here’s a screenshot of the app in action:
Basically, you upload an image to the page and it keeps track of what you’ve uploaded in a database.Here are the JSP and PHP views side-by-side:
<%@ page session="false" %> < %@ page import="java.util.List, java.util.Iterator, org.springframework.samples.imagedb.ImageDescriptor" %>
<!– imageList.jsp –>
<html> < body>
<% List images = (List) request.getAttribute("images"); for (Iterator it = images.iterator(); it.hasNext();) { ImageDescriptor image = (ImageDescriptor) it.next(); %> < table border="1" cellspacing="0" cellpadding="5"> <tr><td width="10%">Name</td><td><%= image.getName() %> </td></tr> <tr><td colspan="2"><img src="imageContent?name=<%= image.getName() %>" height="100"></td></tr> <tr><td>Description (<%= image.getDescriptionLength() %>)</td><td><%= image.getShortDescription() %> </td></tr> < /table> < p> < % } %>
<p> < table border="1" cellspacing="0" cellpadding="5"> < form action="imageUpload" method="post" encType="multipart/form-data"> <tr><td width="10%">Name</td><td><input type="text" name="name"><br></td></tr> <tr><td>Content</td><td><input type="file" name="image"><br></td></tr> <tr><td>Description</td><td><textarea name="description" cols="80" rows="5"></textarea></td></tr> <tr><td colspan="2"><input type="submit" value="Upload image"></td></tr> < /form> < /table>
<p><a href="clearDatabase">Clear database</a>
</body> < /html>
<html> < body>
<?php foreach ($images as $image) { ?> < table border="1" cellspacing="0" cellpadding="5"> <tr><td width="10%">Name</td><td><?= $image->getName() ?> </td></tr> <tr><td colspan="2"><img src="imageContent?name=<?= $image->getName() ?>" height="100"></td></tr> <tr><td>Description (<?= $image->getDescriptionLength() ?>)</td><td><?= $image->getShortDescription() ?> </td></tr> < /table> < p> <?php } ?>
<p> < table border="1" cellspacing="0" cellpadding="5"> < form action="imageUpload" method="post" encType="multipart/form-data"> <tr><td width="10%">Name</td><td><input type="text" name="name"><br></td></tr> <tr><td>Content</td><td><input type="file" name="image"><br></td></tr> <tr><td>Description</td><td><textarea name="description" cols="80" rows="5"></textarea></td></tr> <tr><td colspan="2"><input type="submit" value="Upload image"></td></tr> < /form> < /table>
<p><a href="clearDatabase">Clear database</a>
</body> < /html>
JSP:
<%@ page session="false" %>
<%@ page import="java.util.List,
java.util.Iterator,
org.springframework.samples.imagedb.ImageDescriptor" %>
<!– imageList.jsp –>
<html>
<body>
<%
List images = (List) request.getAttribute("images");
for (Iterator it = images.iterator(); it.hasNext();) {
ImageDescriptor image = (ImageDescriptor) it.next();
%>
<table border="1" cellspacing="0" cellpadding="5">
<tr><td width="10%">Name</td><td><%= image.getName() %> </td></tr>
<tr><td colspan="2"><img src="imageContent?name=<%= image.getName() %>" height="100"></td></tr>
<tr><td>Description (<%= image.getDescriptionLength() %>)</td><td><%= image.getShortDescription() %> </td></tr>
</table>
<p>
<%
}
%>
<p>
<table border="1" cellspacing="0" cellpadding="5">
<form action="imageUpload" method="post" encType="multipart/form-data">
<tr><td width="10%">Name</td><td><input type="text" name="name"><br></td></tr>
<tr><td>Content</td><td><input type="file" name="image"><br></td></tr>
<tr><td>Description</td><td><textarea name="description" cols="80" rows="5"></textarea></td></tr>
<tr><td colspan="2"><input type="submit" value="Upload image"></td></tr>
</form>
</table>
<p><a href="clearDatabase">Clear database</a>
</body>
</html>
PHP：
<html>
<body>
<?php
foreach ($images as $image) {
?>
<table border="1" cellspacing="0" cellpadding="5">
<tr><td width="10%">Name</td><td><?= $image->getName() ?> </td></tr>
<tr><td colspan="2"><img src="imageContent?name=<?= $image->getName() ?>" height="100"></td></tr>
<tr><td>Description (<?= $image->getDescriptionLength() ?>)</td><td><?= $image->getShortDescription() ?> </td></tr>
</table>
<p>
<?php
}
?>
<p>
<table border="1" cellspacing="0" cellpadding="5">
<form action="imageUpload" method="post" encType="multipart/form-data">
<tr><td width="10%">Name</td><td><input type="text" name="name"><br></td></tr>
<tr><td>Content</td><td><input type="file" name="image"><br></td></tr>
<tr><td>Description</td><td><textarea name="description" cols="80" rows="5"></textarea></td></tr>
<tr><td colspan="2"><input type="submit" value="Upload image"></td></tr>
</form>
</table>
<p><a href="clearDatabase">Clear database</a>
</body>
</html>
What I think is interesting between these two is that the PHP, even though it’s calling Java objects, has a simpler syntax.It’s not a major issue, but you can see that PHP is as reasonable as any other view for Java.
Now how do you configure it?Just add the QuercusView class to a UrlBasedViewResolver and give a php suffix and you’re done:
<?xml version="1.0" encoding="UTF-8"?>
<!–
- DispatcherServlet application context for the image database.
–>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">
<!– Activates @Autowired for ImageController –>
<context:annotation-config/>
<!– MultiActionController that defines user interface actions as separate methods –>
<bean id="imageController" class="org.springframework.samples.imagedb.web.ImageController"/>
<!– MultipartResolver for parsing file uploads, implementation for Commons FileUpload –>
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>
<bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass" value="com.caucho.spring.quercus.QuercusView"/>
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".php"/>
</bean>
</beans>
If you’re interested in the implementation… The view was pretty easy to connect up once I learned Spring’s view API.It’s essentially a Servlet.service() call with a map of model values.So the QuercusView class above is just a modified QuercusServlet that injects the model values as PHP globals.I’m not sure that that’s right just yet, but it’s a start.The other option would be to put the values as PHP superglobals or in a specialized Spring array.
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