本文首先分析了J2EE平台的基础、体系结构以及层次结构,介绍了J2EE应用中的核心技术,包括JDBC、JSP、JavaBean、Servlet、XML等内容。J2EE是一种利用Java 2平台来简化企业解决方案的开发、部署和管理相关的复杂问题的体系结构。J2EE体系结构提供中间层集成框架来满足企业应用开发的需求。本文对基于Web的多层体系结构,以及J2EE的实现技术进行了重点论述。-This paper analyzes the J2EE infrastructure, architecture and hierarchical structure, J2EE Application of the core technologies, including JDBC, JSP, JavaBean, Servlet and XML content. J2EE is a Java 2 Platform to simplify enterprise solutions development, deployment and management of the complex issues related to the structure. J2EE architecture to provide the middle layer integrated framework to meet enterprise application development needs. In this paper, the Web-based multi-tier architecture and J2EE technology for the realization of a highlight.