Hi Paul,
Yes I am aware of the MVC support in Jersey. I am going to look at it
in more detail. I wanted to show that I could integrate freemarker
with POJOs. (I didn't want to wrap my data models with Viewable). Is
it supported to load template files from the file system rather than
the classpath?
By the way I would be glad to contribute to Jersey in any way I can. I
am not very experienced in Freemarker but I can sure supply a maven
module for that.
Erdinc
On Tue, Mar 10, 2009 at 9:56 AM, Paul Sandoz <Paul.Sandoz_at_sun.com> wrote:
> Hi Erdinc,
>
> Very nice!
>
> Are you aware of the Module View Controller support in Jersey?
>
> http://blogs.sun.com/sandoz/entry/mvcj
>
> It would be ideal to plug in Freemarker as a TemplateProcessor so one could
> do:
>
> @GET
> public Viewable get() {
> return new Viewable("index", new Index());
> }
>
> What you then get it is the ability to scope Freemarker templates per the
> resource classes and implicit views, or say intermix different template
> technologies.
>
> For a simple example using JSPs see the Bookstore example:
>
> http://download.java.net/maven/2/com/sun/jersey/samples/bookstore/1.0.2/bookstore-1.0.2-project.zip
>
> Would you consider contributing such a Freemarker template processor
> support?
>
> Paul.
>
> On Mar 9, 2009, at 7:50 PM, Erdinc Yilmazel wrote:
>
>> If you want to use FreeMarker along with jersey, I wrote a Provider
>> for that and I wanted to share it with you. You just need to annotate
>> any POJO with @FreeMarkerModel annotation and return an instance of
>> that class in your resource methods. The returned bean will be used as
>> the model to the FreeMarker template.
>>
>> Example usage:
>>
>> @FreeMarkerModel(template="index.html")
>> class Index {
>> public String getMessage() {
>> return "Hello jersey";
>> }
>> }
>>
>> @Path("/")
>> public class WebPages {
>> @GET
>> @Produces("text/html")
>> public Index getIndex() {
>> return new Index();
>> }
>> }
>>
>>
>> index.html:
>> ----------------------------------------------
>> <html>
>> <body>${message}</body>
>> </html>
>>
>> Here is the code:
>> FreeMarkerProvider.java
>> -----------------------------------------------
>>
>> import freemarker.template.Configuration;
>> import freemarker.template.DefaultObjectWrapper;
>> import freemarker.template.Template;
>> import freemarker.template.TemplateException;
>>
>> import javax.ws.rs.Produces;
>> import javax.ws.rs.WebApplicationException;
>> import javax.ws.rs.core.MediaType;
>> import javax.ws.rs.core.MultivaluedMap;
>> import javax.ws.rs.ext.MessageBodyWriter;
>> import javax.ws.rs.ext.Provider;
>> import java.io.*;
>> import java.lang.annotation.Annotation;
>> import java.lang.reflect.Type;
>> import java.util.Properties;
>>
>> /**
>> * Author: Erdinc YILMAZEL
>> * Date: Mar 9, 2009
>> * Time: 12:41:20 PM
>> */
>> @Provider
>> @Produces({"text/plain", "text/html"})
>> public class FreeMarkerProvider implements MessageBodyWriter<Object> {
>>
>> String templateBaseDir;
>>
>> Configuration cfg;
>>
>> public FreeMarkerProvider() throws IOException {
>> InputStream in =
>>
>> this.getClass().getClassLoader().getResourceAsStream("/templates.properties");
>> if (in != null) {
>> Properties properties = new Properties();
>> try {
>> properties.load(in);
>> templateBaseDir = (String) properties.get("templateBaseDir");
>> } catch (IOException e) {
>> //
>> }
>> }
>>
>> if (templateBaseDir == null) {
>> templateBaseDir = "/templates";
>> }
>>
>> cfg = new Configuration();
>> cfg.setDirectoryForTemplateLoading(new File(templateBaseDir));
>> cfg.setObjectWrapper(new DefaultObjectWrapper());
>> }
>>
>> @Override
>> public boolean isWriteable(Class<?> type, Type genericType,
>> Annotation[] annotations, MediaType mediaType) {
>> return type.isAnnotationPresent(FreeMarkerModel.class);
>> }
>>
>> @Override
>> public long getSize(Object o, Class<?> type, Type genericType,
>> Annotation[] annotations, MediaType mediaType) {
>> return -1;
>> }
>>
>> @Override
>> public void writeTo(Object o,
>> Class<?> type,
>> Type genericType,
>> Annotation[] annotations,
>> MediaType mediaType,
>> MultivaluedMap<String, Object> httpHeaders,
>> OutputStream entityStream) throws IOException,
>> WebApplicationException {
>>
>> FreeMarkerModel c = type.getAnnotation(FreeMarkerModel.class);
>> if (c != null) {
>> httpHeaders.putSingle("Content-Type", mediaType.toString() +
>> "; charset=" + c.encoding());
>>
>> Template temp = cfg.getTemplate(c.template(), c.encoding());
>> OutputStreamWriter outputStreamWriter = new
>> OutputStreamWriter(entityStream, c.encoding());
>> try {
>> temp.process(o, outputStreamWriter);
>> outputStreamWriter.flush();
>> } catch (TemplateException e) {
>> e.printStackTrace();
>> }
>> }
>> }
>> }
>>
>> ---------------------------------------
>>
>> FreeMarkerModel.java
>>
>> ----------------------------------------
>> import java.lang.annotation.Target;
>> import java.lang.annotation.ElementType;
>> import java.lang.annotation.Retention;
>> import java.lang.annotation.RetentionPolicy;
>>
>> /**
>> * Author: Erdinc YILMAZEL
>> * Date: Mar 9, 2009
>> * Time: 12:39:25 PM
>> */
>> @Target({ElementType.TYPE})
>> @Retention(RetentionPolicy.RUNTIME)
>> public @interface FreeMarkerModel {
>> String template();
>> String encoding() default "UTF-8";
>> }
>>
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>
>
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