Updating EclipseLink in WebLogic
Join the DZone community and get the full member experience.
Join For Free
JSON binding was
added to EclipseLink in version 2.4. If you are using a version of that
does not contain this version (i.e. WebLogic 10.3.4 (11g) contains
EclipseLink 2.1.2), then by default you won't have access to this
functionality. The recommended solution to this problem is to create a
shared library in WebLogic for the newer release of EclipseLink.
Create the Shared Library
WebLogic has the concept of shared libraries. These are deployed as an EAR. Below is what the EAR will look like for creating a shared library for EclipseLink 2.4.
EclipseLink24_SharedLibrary.ear
- lib/eclipselink.jar
- META-INF/application.xml
- META-INF/MANIFEST.MF
- META-INF/weblogic-application.xml
application.xml
<application> <display-name>EclipseLink 2.4 Shared Library</display-name> <module> <java></java> </module> </application>
MANIFEST.MF
Manifest-Version: 1.0 Ant-Version: Apache Ant 1.8.2 Created-By: 1.7.0_04-b21 (Oracle Corporation) Extension-Name: EclipseLink-2.4.0 Specification-Version: 2.4.0 Implementation-Version: 2.4.0.v20120608-r11652
weblogic-application.xml
<weblogic-application> <prefer-application-packages> <package-name>org.eclipse.persistence.*</package-name> </prefer-application-packages> </weblogic-application>
Use the Shared Library
Once the shared library has been deployed, you need to configure your enterprise applications to use it.
SampleApplication.ear
- META-INF/MANIFEST.MF
- META-INF/weblogic-application.xml
- SampleApplication.war
weblogic-application.xml
The weblogic-application.xml file is used to reference the shared
library. The entries in the library-ref element need to match the
corresponding entries from MANIFEST.MF in the shared library.
<?xml version="1.0" encoding="UTF-8"?> <wls:weblogic-application xmlns:wls="http://xmlns.oracle.com/weblogic/weblogic-application" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/javaee_5.xsd http://xmlns.oracle.com/weblogic/weblogic-application http://xmlns.oracle.com/weblogic/weblogic-application/1.2/weblogic-application.xsd"> <!--weblogic-version:10.3.4--> <wls:application-param> <wls:param-name>webapp.encoding.default</wls:param-name> <wls:param-value>UTF-8</wls:param-value> </wls:application-param> <wls:library-ref> <wls:library-name>EclipseLink-2.4.0</wls:library-name> <wls:specification-version>2.4.0</wls:specification-version> <wls:implementation-version>2.4.0.v20120608-r11652</wls:implementation-version> <wls:exact-match>true</wls:exact-match> </wls:library-ref> </wls:weblogic-application>
TestServlet
Below is a test servlet that you could include in the WAR to test the EclipseLink version.
package com.example; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.*; public class TestServlet extends HttpServlet { private static final long serialVersionUID = 1L; public TestServlet() { super(); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); out.append("<html><body>"); out.append(org.eclipse.persistence.Version.getVersion()); out.append("</body></html>"); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { } }
EclipseLink
Published at DZone with permission of Blaise Doughan, DZone MVB. See the original article here.
Opinions expressed by DZone contributors are their own.
Trending
-
Build a Simple Chat Server With gRPC in .Net Core
-
Apache Kafka vs. Message Queue: Trade-Offs, Integration, Migration
-
Auto-Scaling Kinesis Data Streams Applications on Kubernetes
-
How To Integrate Microsoft Team With Cypress Cloud
Comments