Web Services (Web service) Related concepts

1. Overview

Web Services Technology (Web Service) is a service-oriented architecture technology that provides services through standard WEB protocols to ensure that application services from different platforms can interoperate with each other. Because the Web service publishes data based on XML format and

SOAP protocol, so that platforms developed in different languages can invoke communication with each other.

2.Web Service Protocol Family

The 3 most important task of Web services is that the communication protocol is based primarily on soap, service descriptions through WSDL, and the discovery and acquisition of service metadata through UDDI.

SOAP: Simple Object Transport protocol. An XML-based extensible envelope format that binds one transport protocol at a time. This protocol is either HTTP or HTTPS, but it may also be SMTP or XMPP.

WSDL: An XML-formatted document that describes the details of how the service port is accessed and the practical protocol. Typically used to assist in building service server and client code and configuration information.

UDDI: A protocol for publishing and searching Web services that an application can use to locate a target Web service at design or runtime.

JAX-WS and Axis are two types of Web Service open source frameworks. JAX-WS is provided by Oracle and axis is provided by the Apache Open Source Foundation. In the actual development of the more popular is the Apache Axis2. The China Mobile Group system is to use AXIS2 to do SOA service.

A simple example of Jax-WS and AXIS2 is brought to you by the blogger in the next article.

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