Research And Implementation Of Content Dial-up Test System Using EJB And Hibernate

As the development of applicable procedure oriented in Web,business system become more and more complex and application of exploiting facilities for enterprise is also enlarged,to solve these problems,J2EE was put forward by SUN.ltd.J2EE provide a whole set of application programs for enterprise calculation,among them, application program centered on EJB supply the setup structure on logical level,in this progress,EJB is the communication bridge between application of main business logins and constancy level,thus the majority function will be able to be transferred to some other serve which is more efficiency.The application of EJB could make the business exploiting system become easier,so application system could be exploited in a circumstance in which EJB can be used,with the change of needs application system can be transferred in to other server that provide more function and more complex,at the same time,along with the expanding of enterprise distributional application system,there is enlarging study of J2EE,EJB become main point discussed as the key of J2EE tech,it is the realization of the Entity Bean constancy level tech.The main reason is to achieve complexity of tech mapping of a lasting entity Bean level,and because data and multi-level mapping table is difficult to achieve,come out many other ORM products.ORM object-oriented design as an important technology,actually,is a tool between OBJ-oriented domain model and the relating database model of the mapping. Hibernate become the first choice for ORM middleware for its characteristics of flexibility and open-source.It not only provides the ORM mapping services,but also provides dynamic query,data caching and object-oriented features of the HQL query language,and can integrate well with a variety of Web servers and applicant servers.This topic is under the Content Dial-up Test System's background,proposed an union Web construction of EJB and Hibernate,the client side transfers the lasting level object through EJB to realize data interaction,the customer level,the service level,the lasting level separates,designs and realizes the Content Dial-up Test System's management,completes the script task issuing as well as other information functions,maintenance and so on.This article first introduced in the Web end use's MVC2.0 construction,than has studied J2EE under frame core EJB technologies, provides the connection by EJB to complete service logic processing,finally started from folio resource frame directions to carry on the analysis of Hibernate ORM mechanism,proposed a conformity Hibernate EJB construction,developed a distributional application system "Content Dial-up Test System's management",and detailed description of performance processing.