基于Web的应用程序概念及其演变 Web的演变 ◆ Web services ◆ Generate Xml SOAP, WSDL UDDI Service web Transactions initiated y program Application Servers Business Logic ◆ Generate HTML ◆ Transactions Application Web ● Distributed process ◆WAP,WML Web server HTP协议 Document web ◆HTML文档基于Web的应用程序概念及其演变 ◈ Web Server ◈ HTTP协议 ◈ HTML文档 ◈ Application Servers ◈ Business Logic ◈ Generate HTML ◈ Transactions ◈ Distributed process ◈ WAP, WML ◈ Web Services ◈ Generate XML ◈ SOAP, WSDL, UDDI ◈ Transactions initiated by program Document Web Application Web Service Web ◼ Web的演变