关键词: Web包装器 XSLT XML Schema

Abstract:

Converting Web pages into XML, Web wrappers can support the integration of existing systems. XSLT aims at XML transformation. Its capabilities in info rmation extraction and reorganization show good potential for wrappers. Wrapper description incorporates the query interfaces, result schemas and mappin
g rules. This XML file is used to generate executable code automatically. Wrapper execution and code generation are all based on standard XSLT, which features great portability. A content-based locating method called ＂Meta-Data Aligning＂ is also put forward to improve wrappers＇ tolerance to the chang ges of Web pages. Ideas and techniques are validated in the implementation of the prototype.

Key words: Web wrapper, XSLT, XML Schema