web service技术简介-----外文翻译.doc
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web service技术简介-----外文翻译,web service平台需要一套协议来实现分布式应用程序的创建。任何平台都有它的数据表示方法和类型系统。要实现互操作性，web service平台必须提供一套标准的类型系统，用于沟通不同平台、编程语言和组件模型中的不同类型系统。在传统的分布式系统中，基于界面(interface)的平台提供了一些方法来描述界面、方法和...
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Web service平台需要一套协议来实现分布式应用程序的创建。任何平台都有它的数据表示方法和类型系统。要实现互操作性，Web service平台必须提供一套标准的类型系统，用于沟通不同平台、编程语言和组件模型中的不同类型系统。在传统的分布式系统中，基于界面(interface)的平台提供了一些方法来描述界面、方法和参数(译注：如COM和COBAR中的IDL语言)。同样的，Web service平台也必须提供一种标准来描述Web service，让客户可以得到足够的信息来调用这个Web service。最后，我们还必须有一种方法来对这个Web service进行远程调用。这种方法实际是一种远程过程调用协议(RPC)。为了达到互操作性，这种RPC协议还必须与平台和编程语言无关。
1．Web对象
从外部的使用者的角度而言，Web服务是一种部署在Web上的对象/组件，它具备以下特征：的封装性，Web服务既然是一种部署在Web上的对象，自然具备对象的良好封装性，对于使用者而言，他能且仅能看到该对象提供的功能列表。
松散耦合，这一特征也是源于对象/组件技术，当一个Web服务的实
Web service needs a platform to achieve an agreement the creation of distributed applications. Any platform that has its data methods and types of systems. To achieve interoperability, Web service must provide a standard platform for the type of system for communication between different platforms, programming languages, and components in the model of the different types of systems. In a traditional distributed system, based on the interface (interface) to provide a platform for a number of methods to describe the interfaces, methods and parameters (universe: COBAR such as COM and the IDL language). Similarly, the Web service platform must also provide a standard to describe the Web service so that customers can get enough information to call this Web service. Finally, we must also have a way to this remote Web service call. This method is a practical agreement Remote Procedure Call (RPC). In order to achieve interoperability, this agreement must also RPC platform and programming language unrelated.
1．Web对象
从外部的使用者的角度而言，Web服务是一种部署在Web上的对象/组件，它具备以下特征：的封装性，Web服务既然是一种部署在Web上的对象，自然具备对象的良好封装性，对于使用者而言，他能且仅能看到该对象提供的功能列表。
松散耦合，这一特征也是源于对象/组件技术，当一个Web服务的实
Web service needs a platform to achieve an agreement the creation of distributed applications. Any platform that has its data methods and types of systems. To achieve interoperability, Web service must provide a standard platform for the type of system for communication between different platforms, programming languages, and components in the model of the different types of systems. In a traditional distributed system, based on the interface (interface) to provide a platform for a number of methods to describe the interfaces, methods and parameters (universe: COBAR such as COM and the IDL language). Similarly, the Web service platform must also provide a standard to describe the Web service so that customers can get enough information to call this Web service. Finally, we must also have a way to this remote Web service call. This method is a practical agreement Remote Procedure Call (RPC). In order to achieve interoperability, this agreement must also RPC platform and programming language unrelated.
