kandy的专栏

/** *1、实现随机生成4个字符0-9|a-z|A-Z *2、将这4个字符绘制成一张图片 */ public class CodeServlet extends HttpServlet { protected void doGet(HttpServletRequest req, HttpServletResponse resp) th

1.   符合j2ee标准的web-app的目录结构 n         WEB-INF u       classes u       web.xml u       lib 2.   servlet开发过程 n         新建一个java类从httpservlet继承,重写doget / doPost方法 n         部署web.xml

1:使用apache的插件:commons-fileupload.jar实现附件的上传 2:编写页面：upload.jsp 3:编写上传附件servlet:PicUploadServlet.java 4:配置web.xml upload.jsp <%@ page language="java" contentType="text/html; charset=UTF-8" p

UsersDAO oracle实现 public class UsersDAO { private JDBCTemplate template; public UsersDAO() { template = new JDBCTemplate() { @Override protected RowMapper getRowMapper() {