added CORS filter

samples/server-generator/java-jaxrs/templates/ApiOriginFilter.mustache

@@ -0,0 +1,26 @@
+package {{apiPackage}};
+
+import java.io.IOException;
+
+import javax.servlet.*;
+import javax.servlet.http.HttpServletResponse;
+
+public class ApiOriginFilter implements javax.servlet.Filter {
+	@Override
+	public void doFilter(ServletRequest request, ServletResponse response,
+			FilterChain chain) throws IOException, ServletException {
+		HttpServletResponse res = (HttpServletResponse) response;
+		res.addHeader("Access-Control-Allow-Origin", "*");
+		res.addHeader("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT");
+		res.addHeader("Access-Control-Allow-Headers", "Content-Type");
+		chain.doFilter(request, response);
+	}
+
+	@Override
+	public void destroy() {
+	}
+
+	@Override
+	public void init(FilterConfig filterConfig) throws ServletException {
+	}
+}

samples/server-generator/java-jaxrs/templates/web.mustache

@@ -41,13 +41,12 @@
     <servlet-name>jersey</servlet-name>
     <url-pattern>/*</url-pattern>
   </servlet-mapping>
-<!--  <filter>
+  <filter>
     <filter-name>ApiOriginFilter</filter-name>
-    <filter-class>com.wordnik.swagger.sample.util.ApiOriginFilter</filter-class>
+    <filter-class>{{apiPackage}}.ApiOriginFilter</filter-class>
   </filter>
   <filter-mapping>
     <filter-name>ApiOriginFilter</filter-name>
     <url-pattern>/*</url-pattern>
   </filter-mapping>
--->
 </web-app>