基于soap分布式组件通信的研究-计算机应用技术专业论文.docxVIP

AbstractDistributed Abstract Distributed component model has many advantages such platform— independent，language—independent．expansibility．So the interoperability based different distributed componets is very important characteristic in enterprise applications．At present，the main distributed component standards—DCOM and CORBA need definite and congeneric framework between and client．this phenomenon results in difficult interoperability between different distributed components．Most of the productions which keep to CORBA standard have solved the interoperability between DCOM objects and CORBA objects comparatively．But these productions still have some shortages such slow efficiency，complexity in realization and bad expansibility． SOAP is communication protocol of distributed components based XML and it has many merits such simpleness，language—independence and expansibility．It provides feasible way for the interoperability between DCOM and CORBA．In this papeE we bring forward and realize scheme which SOAP communication protocol between them．The research indicates that the scheme using SOAP protocol integrate component objects in horizontal levels with transparent In this paper．firstly the SOAP protocol is briefly introduced，then WE bring forward communication framework of distributed components based SOAP and research the specific realization technologies，(1)Serializer／Deserializer (2)design and application of General complex type(3)conversion of WSDL format(4)configuration of WSML file．Based these studies，one testing instance iS foIlowed．The conclusion of the research and the direcl[ion of further study are pointed out in the last part of this paper． Keywords：SOAP：CORBA：COM／DCOM；Ser zer／Deser 第1章引言1．1选题背景 第1章引言 1．1选题背景 分布式组件模型具有跨平台、跨语言‘以及易扩展等优点，企业希望通过多种 硬件平台的异种类型组件之『自J的通信，能够再利用数以万计可供选择的组件来迅 速的构造一个应用系统。目前主要的分布式组件规范CORBA、DCOM、RMI等模 型要求在对等体系结构问才能进行通信，都需要在服务器端和客户端有明确的、 同类型的对象模型协议，造成不同类型的组件之间很难进行互操作。 组件技术的目标本来是为了能够更好地实现代码重用，但是缺少组件之间的 互操作，用户就不得不为各种不同的分布式组件系统编写相同功能的代码。对于 企