Struts上传文件

package cn.File.Action; import java.io.FileOutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts.action.Action; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import org.apache.struts.upload.FormFile; import org.apache.struts.util.MessageResources; import cn.File.Form.FileForm; import cn.File.Model.FileModel; public class FileAction extends Action { public ActionForward execute(ActionMapping arg0, ActionForm arg1, HttpServletRequest request, HttpServletResponse response) throws Exception { FileForm form = (FileForm) arg1; FormFile path = form.getPath(); String name = path.getFileName();// 只可以上传RAR的文件 String ext = name.substring(name.lastIndexOf(".") + 1); byte b[] = path.getFileData(); ActionForward f = null; if (ext.equals("rar") && b.length < 10 * 1024 * 1024)// 限制上传文件的大小 { String filePath = this.servlet.getServletContext().getRealPath( "File").replaceAll("\\\\", "/") + "/" + path.getFileName(); FileOutputStream fo = new FileOutputStream(filePath); fo.write(b, 0, b.length); fo.close(); FileModel model = new FileModel(); model.savefile("/File/" + path.getFileName(), form.getFilename()); request.setAttribute("file", "上传成功!");// 上传成功返回的成功信息 f = new ActionForward("/File.jsp"); form.setFilename("");// 页面返回的时候文本框里没有上次写入的值 } else { MessageResources r = this.getResources(request);// 获取资源文件里的错误信息，返回给asp页面 String er = r.getMessage(request.getLocale(), "UserBlog.aspfileerror"); request.setAttribute("asperror", er); f = new ActionForward("/File.jsp"); } return f; } }