In order to improve the effectiveness of component choosing under Internet

a scene matching technology is raised to be applied in component choosing.Firstly combining with characteristics of Internet environment

the component credibility is evaluated from three aspects of reliability

usability and timeliness.An integrated evaluation model is built for the component credibility.Secondly the definition of scene and the calculation method of scene matching degree are proposed.And then by introducing the history evaluation and scene matching information into the component choosing logic

the mechanism of component choosing is realized with constraints of environment and credibility demand.The component choosing algorithm is also designed.Finally through simulation experiments

its shown that the component choosing method is valid and usable.