Weblogic certificate issues

"The loading of the trusted certificate list raised a certificate parsing exception PKIX: Unsupported OID in the AlgorithmIdentifier object:"

"javax.net.ssl.SSLKeyException: FATAL Alert:BAD_CERTIFICATE - A corrupt or unuseable certificate was received"

Above error was raised while accessing https URL in application server. To avoid this error, we have following options.

1. Install certificate in cacert to trust the certificate (JAVA_HOME/jre/lib/security)
2. Install certificate in a key store and refer it
3. Install certificate in Linux server

For the option 3, you can download https URL in server. Following commands can be used to download page using curl or wget.

curl - k https://www.google.com
wget https://www.google.com

Since, this is a valid http request server will install certificate in Linux server and validate requests against it.

java.lang.LinkageError: loader constraint violation in interface itable initialization: when resolving method

Above error was occurred in Maven project while running application in weblogic server. It can be ignored by modifying pom.xml file as below.

<dependency>
<groupId>axis</groupId>
<artifactId>axis</artifactId>
<version>1.4</version>
<exclusions>
<exclusion> <!-- declare the exclusion here -->
<groupId>org.apache.axis</groupId>
<artifactId>axis-jaxrpc</artifactId>
</exclusion>
</exclusions>
</dependency>

weblogic.xml to use on memory session replication

<?xml version="1.0" encoding="UTF-8" ?>

<weblogic-web-app xmlns="http://www.bea.com/ns/weblogic/90"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

<session-descriptor>

<timeout-secs>300</timeout-secs>

<invalidation-interval-secs>60</invalidation-interval-secs>

<persistent-store-type>jdbc</persistent-store-type>

<persistent-store-pool>SessionDS</persistent-store-pool>

<persistent-store-table>WL_SERVLET_SESSIONS</persistent-store-table>

</session-descriptor>

</weblogic-web-app>

Use the above code for weblogic.xml. Your weblogic cluster MUST be configured to use jdbc persistence store to capture web-browsers and nodes sessions. WL_SERVLET_SESSIONS is the table for session store.

Add this weblogic.xml file to your WEB-INF directory and deploy your application to the weblogic cluster. When a cluster node down, it will replicate all the JSP sessions associates with the clients.

Add your own jars to weblogic application

Sometimes weblogic server uses its server lib .jars. If you want your application to use your own versions of .jar files, add following code to your weblogic.xml file located in WEB-INF directory.

<container-descriptor>
<prefer-web-inf-classes>true</prefer-web-inf-classes>
</container-descriptor>

This will use libraries in your application.

how to add an external weblogic server to jdeveloper

add "Oracle\Middleware\wlserver_10.3\server\lib\weblogic.jar" file to "Oracle\Middleware\jdeveloper\jdev\lib\ext" and restart the jdeveloper.

1) In jdevepoler view menu choose "Application Server Navigator".

2) Then right click on the "Application Servers" and select "New Application Server".

3) Enter weblogic server ip , port, username, password.

4) Enter the weblogic domain as "WLS_Domain";

5)Test your cnnection.

6) Right click on your project select Deploy --> to your weblogic server.

Direct file access in weblogic server

In weblogic, you can keep a directory for all images,pdfs,....

how to do ...

------------

you have to create a "weblogic.xml" file in WEB-INF in your application. This weblogic.xml should be like this.

<?xml version="1.0" encoding="UTF-8"?>

<weblogic-web-app>

<virtual-directory-mapping>

<local-path>/apps/test</local-path>

<url-pattern>/images/*</url-pattern>

</virtual-directory-mapping>

</weblogic-web-app>



suppose you have a directory called as images in path /apps/test/images. You can give users to direct access those files as follows.

http://localhost/AppName/images/test.jpeg;


This is called as Virtual directory mapping in weblogic.