上传和下载

/* * Generated by MyEclipse Struts * Template path: templates/java/JavaClass.vtl */ package org.wdm.struts.action; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import org.apache.struts.actions.DispatchAction; import org.lxh.servlet.*; import org.lxh.smart.*; /** * MyEclipse Struts Creation date: 08-15-2008 * * XDoclet definition: * * @struts.action parameter="meth" validate="true" * @struts.action-forward name="succ" path="/success.jsp" * @struts.action-forward name="fail" path="/failer.jsp" */ public class UploadAction extends DispatchAction { String gotoURL = "succ"; SmartUpload su = new SmartUpload(); public ActionForward Up(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { try { su.initialize(this.getServlet().getServletConfig(), request, response); // 加载初始方案 su.setMaxFileSize(102400); // 按字节算 1024字节=1k 1024k=1M su.setAllowedFilesList("JPG,bmp,gif"); // 设置允许上传的扩展名 // 此功能有个小bug后缀区分大小写 su.setDeniedFilesList("exe,html,bat"); // 设置禁止上传的扩展名 su.upload(); // 上传 org.lxh.smart.File fl = su.getFiles().getFile(0); // 读取上传的文件，必须在upload之后进行，否则出错 if (fl.isMissing()) { // 如果选择了文件，返回false gotoURL = "fail"; } String filename = fl.getFileName(); // 获得文件名 格式:ss.jsp String hz = fl.getFileExt(); // 获得后缀 jpg fl.saveAs("/upload/" + filename, su.SAVE_VIRTUAL); // 保存在服务器端，后面一个参数判断是放在哪 // fl.saveAs("C:\\temp\\" + filename, su.SAVE_PHYSICAL); // // 保存到操作系统的目录下 String name = su.getRequest().getParameter("username"); // 等到请求参数的值 } catch (ServletException e) { System.out.println("异常1"); } catch (SmartUploadException e) { System.out.println("异常2"); } catch (IOException e) { System.out.println("异常3"); } catch (Exception ce) { System.out.println("异常4"); } return mapping.findForward(gotoURL); } public ActionForward Xz(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { try { su.initialize(this.getServlet().getServletConfig(), request, response); su.setContentDisposition(null);// 设定contentDisposition为null以禁止浏览器自动打开文件 su.downloadFile("/upload/ss.JPG"); } catch (ServletException e) { e.printStackTrace(); } catch (SmartUploadException e) { // TODO 自动生成 catch 块 e.printStackTrace(); } catch (IOException e) { // TODO 自动生成 catch 块 e.printStackTrace(); } return mapping.findForward(gotoURL); } }