CN101692207A - Method for achieving system application integration based on SOA architecture - Google Patents

Abstract

The invention discloses a method for achieving system application integration based on SOA architecture. An enterprise application integration based on the SOA architecture is achieved by using a web service technique on a J2EE platform. The integration mode needs no additional reconstruction and only adopts a loose coupling mode for connection, so a system can respond to a new customer demand, a new business chance and the threats of competition, and basically meet the requirements on the current and the long-term business application. An integration platform of a system integration framework comprises three hierarchical structures including a presentation layer, a service layer and an integration layer.

Description

A Realization Method of System Application Integration Based on SOA Architecture

Technical field:

The method relates to a software integration technology, in particular to a system application integration realization method based on SOA architecture.

Background technique:

In the past, the IT system construction process has always adopted the mode of development first and then integration. The separation of "development" and "integration" has produced "information islands" one by one. How to face the challenges of system integration brought about by language differences, platform differences, protocol differences, and data structure differences is the key to solving the problem. In the traditional enterprise application integration technology, in order to carry out application integration within or among enterprises, it is necessary to reach an agreement among the applications through communication, and implement the communication protocol and message format data model respectively. When the number of users is very large, this point-to-point integration becomes very difficult.

Invention content:

Aiming at these problems, we propose a system application integration method based on SOA architecture. SOA is a service-oriented architecture, which is designed to make business process automation and information sharing among heterogeneous systems easier. SOA-based system integration clearly emphasizes the loose coupling between software components and the use of their independent standard interfaces. On the J2EE platform, the enterprise application integration based on SOA architecture is realized by using web service technology. This integration method does not require additional transformation, and can be connected in a loosely coupled manner, which enables the system to quickly respond to new customer needs, new business opportunities, and competitive threats, and basically meets current and long-term business application requirements.

Referring to FIG. 1 , the method of the present invention includes three subjects during system integration: service consumers, service catalogs, and service providers. To search and invoke services, service consumers first go to the service directory to search for available services that meet specific conditions. Once found, the service consumer will bind to the service provider and make the actual service call; the service directory is stored centrally Service information, so that service consumers can find it easily. At the same time, service providers publish their services here; service providers are responsible for creating and publishing services. It will define some good interfaces that are independent of platform and language, and publish the description information of the interface, that is, service information, to the service directory, and at the same time control the access to the service as well as the maintenance and upgrade of the service.

Since SOA is just a method and a design concept, it must be realized by certain technical means, and in the implementation methods such as Web service, Session Bean, CORBA, etc., Web service is the best way to realize the integration of new enterprise applications.

In addition, the solution provides a number of middleware based on XML standard interface, which has the characteristics of complete encapsulation, loose coupling, standardization of protocol specifications, and high integration, which can well meet the SOA application model need.

The method described in the present invention is a service-oriented architecture (SOA), which is a software design method that makes business process automation and information sharing among heterogeneous systems easier. SOA differs from the general client/server model in that it clearly emphasizes the loose coupling between software components and the use of their independent standard interfaces. Using the SOA architecture, it is possible to provide a Web service interface externally without modifying the existing enterprise application system, and quickly convert the system and application into a service.

Description of drawings:

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a schematic diagram of the structure of the SOA model involved in the method of the present invention.

Fig. 2 is a block diagram of the J2EE platform involved in the method of the present invention.

Among them, the presentation layer in Figure 1 is responsible for processing the interface between the enterprise and external users and components related to user interaction. The service layer is actually a Web Services container, which is at the core, and the applications and data provided by the system are organized in the form of services to provide services for the presentation layer. The bottom layer is the integration layer, which realizes the unification of the interface data format of the existing system and the system under development, and the unification of database and file system data.

Detailed ways:

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

When the present invention is implemented collectively, as shown in FIG. 2 , the enterprise application integration based on the SOA architecture is realized on the J2EE platform by using the web service technology. Integration is achieved in three ways:

(1) Use the JAX-RPC API to create a SOAP-based wrapper to determine the WSDL interface of an existing Java class or EJB. That is, write a simple class for each stateless session bean, as the packaging class of this bean, this class includes the method that needs to be published as a Web service in the stateless session bean, and then publish this packaging class as a Web service.

(2) Directly publish the stateless session bean as a Web service.

(3) Implement JNDI as a Web service. Because the traditional J2EE processing process is to find the required resources such as EJB through JNDI, after implementing JNDI as a Web service, the client's search for EJB must be obtained through this Web service, so that it will indirectly EJBs are published as web services.

For some old application enterprise information systems inside the system, first describe the interface of the old application program as a WSDL port type, and add protocol bindings (these bindings have information on how to access them), and then in the Web Services container and interface Add an adapter for integration. Finally, the system service bus interface encapsulates the services provided by each subsystem, providing a unified service platform for the outside world.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. A method for implementing system application integration based on SOA architecture, characterized in that, during system integration, three main bodies are included: service consumers, service catalogs, and service providers; service consumers realize service search and calling, first Go to the service directory to find available services that meet specific conditions. Once found, the service consumer will bind to the service provider and make an actual service call; the service directory stores service information centrally to facilitate the search of service consumers; At the same time, the service provider publishes the services they want to provide here; the service provider is responsible for creating and publishing the service; it will define some good interfaces that are independent of the platform and language, and publish the description information of the interface, that is, the service information to A service catalog, which also controls access to services as well as their maintenance and upgrades. 2. according to the system application integration realization method based on SOA framework of claim 1, it is characterized in that, some middlewares based on XML standard interface are provided in the described method, have perfect encapsulation, loose coupling, agreement Standardization of specifications and high degree of integration can well meet the requirements of SOA application mode. 3. according to the system application integration realization method based on SOA framework of claim 1, it is characterized in that, described method realizes integration is to utilize JAX-RPC API to create the wrapper based on SOAP, to determine the WSDL interface of existing Java class or EJB ; That is, write a simple class for each stateless session bean as the wrapper class of the bean. This class includes the methods that need to be published as Web services in the stateless session bean, and then publish the wrapper class as a Web service. 4. The method for realizing system application integration based on SOA architecture according to claim 1, characterized in that, said method realizes the integration by directly publishing the stateless session bean as a Web service. 5. The method for implementing system application integration based on SOA architecture according to claim 1, characterized in that said method for implementing integration is implementing JNDI as a Web service. 6. The system application integration method based on SOA architecture according to claim 1, characterized in that, for some old application enterprise information systems inside the system, the method first describes the interface of the old application program as a WSDL port type, and adds Protocol binding, and then add an adapter between the Web Services container and the interface for integration; finally, the system service bus interface encapsulates the services provided by each subsystem, providing a unified service platform for the outside world.

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