Photo album management system (Java form + XML database storage)

Upload, download and management technology of functional files: 1 Using XML as a database to store information (Dom4j, XPath) 2 File upload and download of Java forms 3 Fragmentation of files and directories (hash directory is a method to optimize file storage performance)

Required jar package: commons-fileupload-1.2 2.jar、commons-io-2.1. jar、dom4j-1.6. 1. Jar and jaxen-1.1-beta-6 jar

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First write index jsp

upload. JSP is the download page placed in the JSP directory

photos. XML in SRC directory

Writing value object photomodel

There are two writing tool classes: myutil (date formatting, directory fragmentation code, random ID code)

Dom4jfactory (related operations of Dom4j, obtaining document object and saving operation)

Write photodao from the bottom

Finally, write four servlet uploadservlet upload servlet codes

Showservlet browse the servlet side of the album

Server code downloaded by downservlet

Server for delservlet delete operation

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