在JSP中用SmartUpload如何实现上传、下载，特别急用！！！求大家帮忙
在JSP中用SmartUpload如何实现上传、下载，特别急用！！！求大家帮忙！
[解决办法]
百度是不是更适合楼主呢
http://dev.csdn.net/article/73/73651.shtm
[解决办法]
楼上的 sunyujia 说得很对。
网络上有很多jspSmartUpload的学习资料。
这里还有一篇：
http://www.knowsky.com/3136.html
很详细。既有API说明，又有示例代码。应该可以帮助楼主解决问题。呵呵。
[解决办法]
我得资源里有很好得上传组件
[解决办法]
开源的，网上可以参考的东西太多了，给你贴段我自己的代码
doup.jsp
<%@ page contentType="text/html;charset=gb2312"%>
<%@ page import="com.jspsmart.upload.File"%>
<%@ page import="com.jspsmart.upload.Files"%>
<%@ page import="java.util.Calendar;"%>
<jsp:useBean id="myup" class="com.jspsmart.upload.SmartUpload" />
<jsp:useBean id="mydb" class="com.wootion.DB" />
<center>
正在上传文件，请稍等……
</center>
<%
Calendar cal = Calendar.getInstance();
String filedir = "/file/";
String errors = "";
String sql = "";
long maxsize = 2 * 1024 * 1024;
try
{
myup.initialize(pageContext);
myup.setMaxFileSize(maxsize);
myup.upload();
Files files = myup.getFiles();
for (int i = 0; i < files.getCount(); i++)
{
File singlefile = files.getFile(i);
if (!singlefile.isMissing())
{
String info = myup.getRequest().getParameter(
"info" + (i + 1));
if (info == null || info.equals(""))
info = "无描述信息！";
String type = singlefile.getContentType();
sql = "insert into tb_file values('"
+ singlefile.getFileName() + "','','" + type
+ "','" + info + "','" + cal.get(Calendar.YEAR)
+ "年" + (cal.get(Calendar.MONTH) + 1) + "月"
+ cal.get(Calendar.DAY_OF_MONTH) + "日" + "')";
int num = mydb.CUD(sql);
if (num <= 0)
{
errors += "<li>文件" + (i + 1)
+ "上传失败：请检查是否输入了非法字符！</li>";
}
else
{
sql = "select MAX(id) as maxid from tb_file";
java.sql.ResultSet rs = mydb.Read(sql);
String destname = "";
if (rs.next())
{
int maxid = rs.getInt("maxid");
destname = maxid + "."
+ singlefile.getFileExt();
sql = "update tb_file set file_save='"
+ destname + "' where id=" + maxid;
num = mydb.CUD(sql);
if (num <= 0)
{
errors += "<li>文件" + (i + 1) + "上传失败！</li>";
}
else
{
singlefile.saveAs(filedir + destname,
File.SAVEAS_VIRTUAL);
errors += "<li>文件" + (i + 1) + "上传成功！</li>";
}
}
}
}
}
request.setAttribute("errors", errors);
}
catch (Exception e)
{
request.setAttribute("errors", "文件上传失败！");
e.printStackTrace();
}
%>
<jsp:forward page="fileup.jsp" />
dodown.jsp
<%@ page contentType="text/html;charset=gb2312"%>
<jsp:useBean id="mydown" class="com.jspsmart.upload.SmartUpload"/>
<%
String downfile="/file/"+request.getParameter("downfile");
try{
response.reset();
out.clear();
out = pageContext.pushBody();
mydown.initialize(pageContext);
mydown.setContentDisposition(null);
mydown.downloadFile(downfile);
}catch(Exception e){
String errors="<li>文件下载失败：请检查选择的文件是否存在？</li>";
request.setAttribute("errors",errors);
RequestDispatcher rd=request.getRequestDispatcher("filedown.jsp");
rd.forward(request,response);
}
%>
[解决办法]
去google。。。。。
http://www.google.cn/search?hl=zh-CN&q=jspsmartupload&meta=&aq=1&oq=jspsm
[解决办法]
其实这样就够了
public class NewsAddAction extends Action { /* * Generated Methods */ /** * Method execute * * @param mapping * @param form * @param request * @param response * @return ActionForward */ public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) { PrintWriter out; try { out = response.getWriter(); out.println("<HTML>"); out.println("<BODY BGCOLOR='white'>"); out.println("<H1>jspSmartUpload : Servlet Sample</H1>"); out.println("<HR>"); // Variables int count = 0; SmartUpload mySmartUpload = new SmartUpload(); try { // Initialization mySmartUpload.initialize(getServlet().getServletConfig(), request, response); // Upload mySmartUpload.upload(); // Save the file with the original name // in a virtual path of the web server count = mySmartUpload.save("/img"); request.setAttribute("imagename", mySmartUpload.getFiles() .getFile(0).getFileName()); // Display the result return mapping.findForward("newsAdd2"); } catch (Exception e) { out.println("Unable to upload the file.<br>"); out.println("Error : " + e.toString()); } out.println("</BODY>"); out.println("</HTML>"); } catch (IOException e1) { e1.printStackTrace(); } return null; }}