文件上传和删除

package cn.itcast.web.formbean.uploadfile;import org.apache.struts.upload.FormFile;import cn.itcast.web.formbean.BaseForm;public class UploadfileForm extends BaseForm {private FormFile uploadfile;private Integer[] fileids;public Integer[] getFileids() {return fileids;}public void setFileids(Integer[] fileids) {this.fileids = fileids;}public FormFile getUploadfile() {return uploadfile;}public void setUploadfile(FormFile uploadfile) {this.uploadfile = uploadfile;}}package cn.itcast.web.action.uploadfile;import java.util.LinkedHashMap;import javax.annotation.Resource;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.springframework.stereotype.Controller;import cn.itcast.bean.PageView;import cn.itcast.bean.uploadfile.UploadFile;import cn.itcast.service.uploadfile.UploadFileService;import cn.itcast.web.formbean.uploadfile.UploadfileForm;@Controller("/control/uploadfile/list")public class UploadFileAction extends Action {@Resource(name="uploadFileServiceBean")private UploadFileService uploadFileService;@Overridepublic ActionForward execute(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response) throws Exception {UploadfileForm formbean = (UploadfileForm) form;PageView<UploadFile> pageView = new PageView<UploadFile>(12, formbean.getPage());int firstindex = (pageView.getCurrentpage()-1)* pageView.getMaxresult();LinkedHashMap<String, String> orderby = new LinkedHashMap<String, String>();orderby.put("id", "desc");pageView.setQueryResult(uploadFileService.getScrollData(firstindex, pageView.getMaxresult(), orderby));request.setAttribute("pageView", pageView);return mapping.findForward("list");}}package cn.itcast.service.uploadfile.impl;import java.util.List;import javax.persistence.Query;import org.springframework.stereotype.Service;import org.springframework.transaction.annotation.Transactional;import cn.itcast.bean.uploadfile.UploadFile;import cn.itcast.service.base.DaoSupport;import cn.itcast.service.uploadfile.UploadFileService;@Service @Transactionalpublic class UploadFileServiceBean extends DaoSupport<UploadFile> implements UploadFileService {@SuppressWarnings("unchecked")public List<String> getFilepath(Integer[] ids){if(ids!=null && ids.length>0){StringBuffer jpql = new StringBuffer();for(int i=0; i<ids.length;i++){jpql.append('?').append((i+1)).append(',');}jpql.deleteCharAt(jpql.length()-1);Query query = em.createQuery("select o.filepath from UploadFile o where o.id in("+ jpql.toString()+ ")");for(int i=0; i<ids.length;i++){query.setParameter(i+1, ids[i]);}return query.getResultList();}return null;}}package cn.itcast.web.action.uploadfile;import java.io.File;import java.io.FileOutputStream;import java.io.Serializable;import java.text.SimpleDateFormat;import java.util.Date;import java.util.List;import java.util.UUID;import javax.annotation.Resource;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.springframework.stereotype.Controller;import cn.itcast.bean.uploadfile.UploadFile;import cn.itcast.service.uploadfile.UploadFileService;import cn.itcast.utils.SiteUrl;import cn.itcast.web.formbean.uploadfile.UploadfileForm;@Controller("/control/uploadfile/manage")public class UploadfileManageAction extends DispatchAction {@Resource(name="uploadFileServiceBean")private UploadFileService uploadFileService;/** * 删除 */public ActionForward delete(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response) throws Exception {UploadfileForm formbean = (UploadfileForm) form;List<String> files = uploadFileService.getFilepath(formbean.getFileids());if(files!=null){for(String file : files){String realpath = request.getSession().getServletContext().getRealPath(file);File deletefile = new File(realpath);if(deletefile.exists()) deletefile.delete();}uploadFileService.delete((Serializable[])formbean.getFileids());}request.setAttribute("message", "文件删除成功");request.setAttribute("urladdress", SiteUrl.readUrl("control.uploadfile.list"));return mapping.findForward("message");}/** * 上传界面 */public ActionForward uploadUI(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response) throws Exception {return mapping.findForward("upload");}/** * 保存上传文件 */public ActionForward upload(ActionMapping mapping, ActionForm form,HttpServletRequest request, HttpServletResponse response) throws Exception {UploadfileForm formbean = (UploadfileForm) form;if(formbean.getUploadfile()!=null && formbean.getUploadfile().getFileSize()>0){if(!UploadfileForm.validateFileType(formbean.getUploadfile())){request.setAttribute("message", "文件格式不正确,只允许上传图片/flash动画/word文件/exe文件/pdf文件/TxT文件/xls文件/ppt文件");return mapping.findForward("error");}String ext = UploadfileForm.getExt(formbean.getUploadfile());if(("gif".equals(ext) || "jpg".equals(ext) || "bmp".equals(ext) || "png".equals(ext))&& formbean.getUploadfile().getFileSize()>204800){request.setAttribute("message", "图片不能大于200K");return mapping.findForward("error");}SimpleDateFormat dateformat = new SimpleDateFormat("yyyy/MM/dd/HH");String pathdir = "/images/uploadfile/"+ dateformat.format(new Date());//构建文件保存的目录//得到图片保存目录的真实路径String realpathdir = request.getSession().getServletContext().getRealPath(pathdir);File savedir = new File(realpathdir);if(!savedir.exists()) savedir.mkdirs();//如果目录不存在就创建String filename = UUID.randomUUID().toString()+ "."+ext;//构建文件名称FileOutputStream fileoutstream = new FileOutputStream(new File(realpathdir, filename));fileoutstream.write(formbean.getUploadfile().getFileData());fileoutstream.close();String path = pathdir+"/"+filename;UploadFile uploadfile = new UploadFile(path);uploadFileService.save(uploadfile);request.setAttribute("imagepath", uploadfile.getFilepath());return mapping.findForward("uploadfinish");}else{request.setAttribute("error", "请上传文件");}return mapping.findForward("message");}}