發(fā)布時(shí)間：2018-10-04 20:20

【摘要】：隨著企業(yè)的信息系統(tǒng)建設(shè)變得多樣化和復(fù)雜化。如何進(jìn)一步整合已有信息化資源,已成為提高信息化水平的關(guān)鍵。因此,企業(yè)需要尋求一種有效的技術(shù)手段,以屏蔽系統(tǒng)間的差異性,實(shí)現(xiàn)已有系統(tǒng)間的交互與共享,達(dá)到重用企業(yè)己有系統(tǒng)的目的,迅速對(duì)靈活變化的業(yè)務(wù)需求做出反應(yīng)。同時(shí),系統(tǒng)設(shè)計(jì)不僅僅是局部功能的實(shí)現(xiàn),而是充分結(jié)合用戶需求,把功能包裝成服務(wù)以供用戶使用,用戶以最低的操作成本,來(lái)完成功能操作進(jìn)而獲得結(jié)果。 以服務(wù)作為基本組件,采用統(tǒng)一的Web服務(wù)封裝不同的遠(yuǎn)程應(yīng)用來(lái)實(shí)現(xiàn)應(yīng)用間的互聯(lián)互通。以Web Services作為SOA服務(wù)架構(gòu)的實(shí)現(xiàn)方式,基于接口描述可以有效解決系統(tǒng)間的緊耦合性,并通過(guò)服務(wù)描述、發(fā)布、發(fā)現(xiàn)和調(diào)用標(biāo)準(zhǔn)來(lái)提供了服務(wù)協(xié)作的基礎(chǔ)。 本文以航務(wù)海事綜合平臺(tái)為應(yīng)用背景,航務(wù)海事綜合平臺(tái)整合來(lái)自不同系統(tǒng)的Web遠(yuǎn)程應(yīng)用,是向用戶提供服務(wù)整合性平臺(tái)。該平臺(tái)需要向外提供功能單一的服務(wù)和具有完整解決方案的組合服務(wù)。而在日漸增多的服務(wù)請(qǐng)求者、服務(wù)提供者的環(huán)境中,傳統(tǒng)服務(wù)調(diào)用已經(jīng)無(wú)法保障不會(huì)給系統(tǒng)帶來(lái)巨大壓力。為更好的解決以上問(wèn)題,本文的主要觀點(diǎn)如下： (1)為緩解傳統(tǒng)服務(wù)調(diào)用時(shí)查找、加載服務(wù)帶來(lái)的時(shí)間消耗。采用分層緩存結(jié)構(gòu),分別為組合服務(wù)層、以功能邏輯作為劃分基礎(chǔ)的功能服務(wù)層,提高服務(wù)的查找效率；同時(shí),以池的方式來(lái)緩存服務(wù)調(diào)用實(shí)例,避免服務(wù)實(shí)例頻繁的創(chuàng)建和銷毀帶來(lái)的資源消耗,進(jìn)而提高服務(wù)的響應(yīng)速度。 (2)航務(wù)海事綜合平臺(tái)整合需要的Web服務(wù)已經(jīng)不是單一的Web服務(wù),而是由一組有序的Web服務(wù)組合而成。基于平臺(tái)的特點(diǎn)對(duì)服務(wù)協(xié)作模型的進(jìn)行了深入的研究,提出了基于XML的服務(wù)協(xié)作方式。 通過(guò)結(jié)合航務(wù)海事綜合平臺(tái)當(dāng)前的服務(wù)調(diào)用情況,提出了基于多層緩存池機(jī)制的SOA服務(wù)協(xié)作模型,并對(duì)此進(jìn)行了詳細(xì)的分析設(shè)計(jì),并對(duì)其給予實(shí)現(xiàn)。
[Abstract]:With the construction of enterprise information system become diversified and complicated. How to further integrate the existing information resources, has become the key to improve the level of informatization. Therefore, enterprises need to seek an effective technical means to shield the differences between systems, realize the interaction and sharing among existing systems, achieve the purpose of reusing enterprises' own systems, and respond quickly to the flexible changes of business requirements. At the same time, the system design is not only the implementation of local functions, but also fully combined with the needs of users, packaging the functions into services for users to use, users with the lowest operating cost to complete the functional operations and obtain results. Using the service as the basic component, the unified Web service is used to encapsulate the different remote applications. Using Web Services as the implementation mode of SOA services architecture, interface description can effectively solve the tight coupling between systems, and service collaboration is provided by service description, publication, discovery and invocation standards. The application background of this paper is the integrated platform of maritime affairs, which integrates the remote application of Web from different systems, and provides the service integration platform to the users. The platform needs to provide a single service and a composite service with a complete solution. However, in the increasing number of service requesters and service providers, the traditional service invocation can no longer guarantee that it will not bring great pressure to the system. In order to solve the above problems, the main points are as follows: (1) the time consumption caused by loading the service to ease the traditional service call lookup. It adopts hierarchical cache structure, which is composed of composition service layer, and takes functional logic as the basic function service layer to improve the searching efficiency of the service, at the same time, the instance of service invocation is cached in the way of pool. The resource consumption caused by the frequent creation and destruction of service instance is avoided and the response speed of service is improved. (2) the Web service needed by the integration of maritime and maritime integrated platform is not a single Web service, but composed of a group of ordered Web services. Based on the characteristics of the platform, the service collaboration model is deeply studied, and the service collaboration mode based on XML is proposed. In this paper, a SOA service cooperation model based on multi-layer buffer pool mechanism is put forward, which is based on the current service invocation of the integrated platform of shipping and maritime affairs, and the detailed analysis and design of this model are given, and the implementation of the model is given.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP393.09;F270.7;F552

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