Research On Web Service Technology, Its Runtime Mechanism And Qos

With the development of information technology .especially network technology ,the requirements for electronic commerce in the society especially in the economic area become more and more , higher and higher .Although many e-commerce application systems have been put into use , as they form their own systems and there are no uniform .internationally recognized specifications .which restrict the application of e-commerceo Therefore ,Web Service technology comes forth ,which overcomes the restriction of traditional e-commerce technology and lays a foundation for wide application of e-commerce in the future . Whereas , Web Service technology is not perfect at present .which to some extent restricts its application .The paper traverses Web Service technology .analyzes each protocol layers of it as well as its run time mechanism .and prospects its application foreground .The features of the paper are as follows: 1 ,HLSPN is used in the analysis of Web Service runtime mechanism , which analyzes its runtime course more clearly. 2, Qos problem is not paid much attention in former Web Service technology .whereas .many applications connect with QoS , so the paper puts forward QoS of Web Service technology and methods of improving it such as establishing dynamically QoS negotiation runtime mechanism. Then a sample system is built based on Web Service technology and its performance is analyzed.