CN105320517B - Adapter middleware system and method based on web services - Google Patents

Abstract

The present invention relates to the adapter middleware method based on web services, comprise the following steps：Service adapter setup module specifies destination service type to servicing package module；Source service is converted into atomic service and exported to service parsing module by service AM access module；Service parsing module carries out service parsing according to the obtained service type of matching, obtains source data to servicing package module；Service package module obtains the corresponding service model of destination service type according to destination service type queries service type storehouse, and carries out service encapsulation, obtains target atoms service output to service release module and is issued.System includes service adapter setup module, service type storehouse, AM access module, service parsing module, service package module and service release module.The present invention is with good expansibility, multifunctionality using configurable technology.In the case of invariant system framework itself, it is possible to achieve a variety of services are freely changed.

Description

Adapter middleware system and method based on web service

technical field

The invention belongs to the field of Web middleware, in particular to an adapter middleware system and method based on Web services.

Background technique

With the rapid development of SOA, middleware technology has been widely used. Using services to communicate in the network is often subject to different encapsulation formats of different services, so it cannot be called and parsed correctly. Therefore, there is a problem that cannot be ignored in the way of service interaction.

First of all, each device on the network can provide services to the network, and its services can be analyzed by the matching analysis client in the network. However, the service communication between different network devices is often limited by the service interface, and the analysis cannot be directly invoked.

Secondly, there are many types of web services, and different types of services cannot communicate normally. Different types of services have different self-discovery mechanisms, data interaction methods, and data analysis methods. Data models based on SOA architecture have been proposed in different fields, so that the service-based data model has received great restrictions.

The mainstream web services on the market can be divided into four categories: business-oriented web services, customer-oriented web services, device-oriented web services and system-oriented web services. Different web services focus on their directions. All common protocols of Web services require the use of open standard protocols for description, transmission and exchange. These standard protocols are completely free protocol specifications for implementation by any one of them.

Therefore, in order to solve the problem of inability to communicate between services caused by different service types in the network, it is of great significance to build a service adapter middleware system with adaptive functions on the network.

Contents of the invention

The technical problem to be solved by the present invention is to propose a Web service-based adapter middleware system and its implementation method for the above-mentioned deficiencies in the existing service technology. Wider applicability, the use of middleware technology can make flexible adaptation without changing the way of use, reduce costs while retaining existing services, and expand the general service interface.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: an adapter middleware method based on web services, comprising the following steps:

The service adapter setting module assigns the target service type to the service encapsulation module;

The service access module converts the source service into an atomic service and outputs it to the service parsing module;

The service parsing module matches the atomic service in the service type library, performs service parsing according to the matched service type, and obtains the source data to the service encapsulation module;

The service encapsulation module queries the service type library according to the target service type to obtain the service model corresponding to the target service type, and encapsulates the source data according to the service model, and outputs the target atomic service to the service publishing module;

The service publishing module publishes the target atomic service.

The service encapsulation module queries the service type library according to the target service type to obtain the service model corresponding to the target service type, and performs service encapsulation of the source data according to the service model including the following steps:

The data modeling module obtains the target service type specified by the service adapter setting module, queries the service type library according to the target service type, obtains the service model, and sends it to the service definition module;

The service definition module reads the source data output by the service analysis module, and receives the service model definition target atomic service of the data modeling module.

Adapter middleware system based on web services, including:

The service adapter setting module is used to specify the target service type to the service encapsulation module;

The service access module is used to convert the source service into an atomic service and output it to the service parsing module;

The service parsing module is used to match the atomic service in the service type library, according to the

Analyze the service type and get the source data to the service encapsulation module;

The service encapsulation module is used to query the service type library according to the target service type to obtain the service model corresponding to the target service type, and encapsulate the source data according to the service model to obtain the target atomic service and output it to the service publishing module;

The service publishing module is used to publish the target atomic service.

The service encapsulation module includes:

The data modeling module is used to obtain the target service type specified by the service adapter setting module, and query the service type library according to the target service type to obtain the service model and send it to the service definition module;

The service definition module is used to read the source data output by the service analysis module and receive the service model definition target atomic service of the data modeling module

Compared with the prior art, the present invention has following advantages:

1. The present invention has good interactivity and expansibility, and converts Web services according to the format of the statistical service type library. With the improvement of the service class library, the function of service adaptation can be easily expanded, simplifying the interaction process between services.

2. The present invention adopts the middleware technology, so that the system can rely on the existing network resources to perform function multiplexing and save the cost caused by the service adaptation process.

3. The present invention adopts configurable technology and has good scalability and multi-functionality. Without changing the structure of the system itself, free conversion of various services can be realized.

Description of drawings

Fig. 1 is a schematic structural diagram of an adapter middleware method based on web services;

Fig. 2 is a flow chart of the web service-based adapter middleware method.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the present invention will be further described in detail with reference to the accompanying drawings and examples.

Referring to Figure 1, the adapter middleware system based on Web services mainly includes a service adapter setting module, a service type library, an access module, a service parsing module, a service encapsulation module and a service publishing module.

The service adapter setting module is used to configure the input and output service types of the service adapter middleware system. The service adapter setting module is also responsible for maintaining the management of the service adapter middleware system.

The management of the maintenance service adapter middleware system includes system initialization setting and system updating functions.

The service access module is compatible with various communication modes. The service access module is used to perform service calls to obtain data sources according to the access service type determined after matching the service type library. The source service can be matched through the service calling module.

The service type library is used to store known service types. This type will be used to match against billed services. Determine the current access service type through service matching.

The service analysis module is used to analyze the data model in the source service, so as to obtain a specific data model.

The service encapsulation module is used to perform service encapsulation of the target service format on the parsed data model. In the service class library, select the output type. And according to the service model of the specified service in the service type library, the data model obtained in the service parsing module is encapsulated into the service.

The service release includes a service registration module and a service calling module.

The service registration module means that the service needs to be registered on the server in the network segment, so that the service can be called in the network segment.

The service invoking module refers to that the client in the server can perform service invocation, acquire data of the data gateway, and transmit data to the data gateway.

Referring to Figure 2, the specific steps of the adapter middleware system based on Web services are:

Step S1: Obtain the source service list from the service access module;

Step S2: Identify the source service type according to the known service model library, and make a service call according to the determined service type;

Step S3: Perform service analysis and obtain the source service data model;

Step S4: Specify the target service type in the service adapter setting module, and perform service encapsulation on the parsed data model;

Step S5: Publish the secondary packaged service through the service publishing module.

In this embodiment, it is required to ensure that the source service and the adapter middleware system are in the same network environment.

When the user calls the source service, the source service type is set up as industrial-grade service OPC UA, and the target service type is standard service WSDL. When the source service type does not match the service type required by the user, the service needs to be provided through the service adapter middleware system Type conversion.

Firstly, the adapter middleware system based on WEB service is placed in the OPC UA network, and the source service is matched according to the OPC UA service standard model in the service model library. In the process of service analysis, the adapter middleware system obtains the OPC UA service list according to the URL of the original device, and analyzes the OPC UA service to obtain the data model contained in the service, and stores it in the storage module. In this step, the service adapter middleware system actively connects to the source service for automatic reading and parsing.

Then convert the parsed data model according to the target service type required in the middleware system. In this embodiment, the target service type is selected as WSDL standard service. Select the WSDL service in the service library, perform service encapsulation on the data model according to the WSDL model, and generate a new WSDL service list. Through the encapsulation of this model, users can analyze it through the WSDL service client.

To sum up, the present invention has good interactivity and expansibility, and through the Web-based service adapter middleware system, the user does not need to consider the service type. With the improvement of the service class library, the function of service adaptation can be easily expanded, simplifying the interaction process between services. The use of middleware technology enables the system to rely on existing network resources to perform function reuse and save the overhead caused by the service adaptation process.

Claims (4)

1. The adapter middleware adaptation method based on web service, it is characterized in that comprising the following steps: The service adapter setting module assigns the target service type to the service encapsulation module; The service access module converts the source service into an atomic service and outputs it to the service parsing module; The service parsing module matches the atomic service in the service type library, performs service parsing according to the matched service type, and outputs the source data to the service encapsulation module; The service encapsulation module queries the service type library according to the target service type to obtain the service model corresponding to the target service type, and encapsulates the source data according to the service model, and outputs the target atomic service to the service publishing module; The service publishing module publishes the target atomic service. 2. The adapter middleware adaptation method based on web services according to claim 1, wherein the service encapsulation module queries the service type library according to the target service type to obtain the service model corresponding to the target service type, and converts the source data Service encapsulation according to the service model includes the following steps: The data modeling module obtains the target service type specified by the service adapter setting module, queries the service type library according to the target service type, obtains the service model, and sends it to the service definition module; The service definition module reads the source data output by the service analysis module, and receives the service model definition target atomic service of the data modeling module. 3. An adapter middleware system based on web services, characterized in that it comprises: The service adapter setting module is used to specify the target service type to the service encapsulation module; The service access module is used to convert the source service into an atomic service and output it to the service parsing module; The service parsing module is used to match the atomic service in the service type library, perform service parsing according to the matched service type, and output the source data to the service encapsulation module; The service encapsulation module is used to query the service type library according to the target service type to obtain the service model corresponding to the target service type, and encapsulate the source data according to the service model to obtain the target atomic service and output it to the service publishing module; The service publishing module is used to publish the target atomic service. 4. The adapter middleware system based on web services according to claim 3, wherein said service encapsulation module comprises: The data modeling module is used to obtain the target service type specified by the service adapter setting module, and query the service type library according to the target service type to obtain the service model and send it to the service definition module; The service definition module is used to read the source data output by the service analysis module, and receive the service model definition target atomic service of the data modeling module.