Category: Utility

Posted on

Create Web Services using Axis Java2WSDL, WSDL2Java and Eclipse for all Servers manually – Part 1

There a lot of Web Service implementations available in market. The most widely used among them is the Axis way of implementation. There are a lot of Examples available in the web to create expose, consume the Web services using the Axis packages. But it is not feasible to work get the Axis complete packages inside corporate offices all of a sudden and yes I faced the same situation.

After some investment of time I found some funky stuff in web to create a Web Service with just a couple of jars in hand and off-course with the help of Eclipse.

Prerequisites:

  1. Eclipse, any version should be ok, but I was using the Eclipse Indigo with Ant installed in it.
  2. The set of jars needed. Jars are included in the Project sample.
    1. axis.jar
    2. commons-discovery-0.2.jar
    3. commons-logging.jar
    4. jaxrpc.jar
    5. log4j-1.2.15.jar
    6. saaj.jar
    7. wsdl4j.jar
    8. The sample web.xml, server-config.wsdd (These will be used later in the development steps).

Steps to develop Web Services:

  1. Create a Dynamic Web Project “SampleWebService” in Eclipse.
  2. Place the above said jars in the WEB-INF/jars folder.
  3. Open the Web.xml file and copy the following contents into it somewhere between tags. These contents are available in the sample attached. 
      <servlet>
    <display-name>Apache-Axis Servlet</display-name>
    <servlet-name>AxisServlet</servlet-name>
    <servlet-class>org.apache.axis.transport.http.AxisServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>AxisServlet</servlet-name>
    <url-pattern>/servlet/AxisServlet</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>AxisServlet</servlet-name>
    <url-pattern>*.jws</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>AxisServlet</servlet-name>
    <url-pattern>/services/*</url-pattern>
  </servlet-mapping>
  <servlet>
    <display-name>Axis Admin Servlet</display-name>
    <servlet-name>AdminServlet</servlet-name>
    <servlet-class>org.apache.axis.transport.http.AdminServlet</servlet-class>
    <load-on-startup>100</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>AdminServlet</servlet-name>
    <url-pattern>/servlet/AdminServlet</url-pattern>
  </servlet-mapping>
  4. Copy the server-config.wsdd next to web.xml file. We will reuse this file once again after complete the business logic of the server.
  5. Now the basic configurations are complete, we have to develop the business logic for the Web Service. In my example I have taken the Old school Calculator sample.
    Click here to go to the next Part of this article.
Posted on

Setup your own Social Networking Websites

There a lot of social networking site available in web which includes the Google Plus, Facebook, Twitter etc. Its public and the open to all. But if you wish to Setup your own Social Networking site that is private and for a closed group you can use one of the following Open source scripts.

1. Elgg: Elgg empowers individuals, groups and institutions to create their own fully-featured social environment. Elgg, started in 2004, is an open source social engine which powers all kinds of social environments – from education and business to martial arts and rugby. If you are looking for a professional social intranet or want to run a site for your organisation, Elgg is a great choice. Click here to download.

2. Dolphin: Dolphin is the world’s most advanced community software. Open-source, independent, downloadable, scalable, customizable, full-featured, free software for building social networks, dating sites and web-communities. Loaded with video chat, recorder, video player, forums, groups, events, video messenger, mailbox, desktop app, video sharing, photo sharing, iPhone app and much more. Build your own business or advance your hobby with Dolphin!. Click here to download Dolphin.

3. Jcow: Jcow makes it easy & interesting to create Social Networks and online communities, Build a member community for your existing website, Build a social networking site like facebook/myspace/twitter. Click here to download JCow.

4. Etano: Etano can be used to start up a dating site, a social networking site, a classifieds site or any other type of site involving groups of people, companies, products. Click here to download.

5. Oxwall: Oxwall is used for a wide range of projects starting from family sites and custom social networks to collaboration tools and enterprise community solutions. Oxwall is unbelievably flexible and easy to use PHP/MySQL community software platform. Click here to download.

6. PeoplePods: PeoplePods is a framework that makes it easier to create community or “social” applications. It provides a flexible infrastructure within which members of a site can create, comment upon, and consume content of arbitrary types. Popular social functionality such as friend lists, personalized content views, bookmarking, and voting are automatically available within any PeoplePods application. PeoplePods can be used to build stand-alone sites, or can be layered onto existing sites such as those run using WordPress or other PHP applications. Click here to download.

7. Beatz: Beatz is a free opensource online social networking community script that allows you to start your own favourite artist band website just like Pure Volume. The script is coded in Php, Mysql and licensed under Creative Commons GPL license. In other words, its an online community script for sharing, discussing and learning about new artists and your favorites. Click here to download.

Posted on

Filezilla FTP client – 421 Sorry, cleartext sessions are not accepted on this server

Sometimes we get a error Message when using the FTP clients: 421 Sorry, cleartext sessions are not accepted on this server.

Problem: This error mean that the FTP provider has secured the access with Transport Layer Security (TLS) or its predecessor, Secure Sockets Layer (SSL).

Solution:

Change the protocol of the host to “ftpes://”

The configuration will be

Host: ftpes://hostname.com
port: 21

Posted on

Dynamically adding HTML components using JavaScript

At times there will be requirements to dynamically add a scetion of HTML multiple times in UI. This can be achived by using JavaScript. One of the implementation for such a scenario is addressed in the following example.
Requirement:
In thie example, there was a need to add a row of three Text boxes, select box to be added dynamically to a page on a button click. Validation has to be done to the dynamically added rows.

Design & Usage:

The design of the sample goes like this.

There will be a container to hold the control items, like button to add the component, field to hold the counter. Following the control box an empty container to hold the dynamically added components. Another container just below this, to hold the contents that has to be created dynamically. The contents has to be formulated carefully with the layouts and identifications. To achive the easier identificaiton of the elements inside the components an auto generated ‘ID’ is added to all the elements on the go. To achive this a delimiter is added to all the elements. Here the delimiter used is “ADDIDHERE”. This will be replaced by the counter variable on the go.
Source:
View Sample page.
Download Sample.
Screenshot:

DynaComp