File list (Check if you may need any files):
OnlinePay\day19pay\.classpath
.........\........\.mymetadata
.........\........\.project
.........\........\.settings\.jsdtscope
.........\........\.........\org.eclipse.wst.jsdt.ui.superType.container
.........\........\.........\org.eclipse.wst.jsdt.ui.superType.name
.........\........\src\cn\itcast\servlet\CallbackServlet.java
.........\........\...\..\......\.......\PayServlet.java
.........\........\...\..\......\utils\PaymentUtil.java
.........\........\...\merchantInfo.properties
.........\........\WebRoot\confirm.jsp
.........\........\.......\gsyh.jpg
.........\........\.......\index.jsp
.........\........\.......\META-INF\MANIFEST.MF
.........\........\.......\pay.html
.........\........\.......\WEB-INF\classes\cn\itcast\servlet\CallbackServlet.class
.........\........\.......\.......\.......\..\......\.......\PayServlet.class
.........\........\.......\.......\.......\..\......\utils\PaymentUtil.class
.........\........\.......\.......\.......\merchantInfo.properties
.........\........\.......\.......\web.xml
.........\........\.......\.......\classes\cn\itcast\servlet
.........\........\.......\.......\.......\..\......\utils
.........\........\.......\.......\.......\..\itcast
.........\........\src\cn\itcast\servlet
.........\........\...\..\......\utils
.........\........\WebRoot\WEB-INF\classes\cn
.........\........\src\cn\itcast
.........\........\WebRoot\WEB-INF\classes
.........\........\.......\.......\lib
.........\........\src\cn
.........\........\WebRoot\META-INF
.........\........\.......\WEB-INF
.........\........\.myeclipse
.........\........\.settings
.........\........\src
.........\........\WebRoot
.........\day19pay
OnlinePay