Struts+hibernate图片上传

/* * Generated by MyEclipse Struts * Template path: templates/java/JavaClass.vtl */ package com.upload.action; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream; import java.net.URLEncoder; import java.text.DateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; 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.apache.struts.upload.FormFile; import com.upload.entity.FileUp; import com.upload.form.FileActionForm; import com.upload.service.FileUpService; public class FileAction extends DispatchAction { public ActionForward upLoadFile(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { Date date=new Date(); FileActionForm fileActionForm = (FileActionForm) form; FileUp fileup = new FileUp(); FormFile file=fileActionForm.getFile(); //获取当前文件 String dir=servlet.getServletContext().getRealPath("/image"); //调用图片的上传的方法，并且返回上传服务器的路径 String path=upload(dir,file); path="image/"+path; fileup.setFilePath(path); fileup.setFileName(fileActionForm.getFileName()); fileup.setFileSize(String.valueOf(fileActionForm.getFileSize())); fileup.setFileDate(DateFormat.getDateInstance().format(date)); try{ FileUpService service = new FileUpService(); service.addFile(fileup); List<FileUp> fileups = new ArrayList<FileUp>(); List list =service.getFileUp("FileUp"); if(list != null){ for(Object object : list){ FileUp f = (FileUp)object; fileups.add(f); } } request.setAttribute("addfileup", fileups); return mapping.findForward("success"); }catch(Exception e){ e.printStackTrace(); return mapping.findForward("error"); } } /** * 以下方法是实现图片文件上传的功能 * * 文件上传函数 */ public String upload(String dir,FormFile formFile) throws Exception{ String fname=formFile.getFileName(); int i=fname.lastIndexOf("."); String type= fname.substring(i); fname=System.currentTimeMillis()+"."+type; //创建读取用户上传文件的对象 InputStream streamIn=formFile.getInputStream(); //创建把上传数据写到目标文件的对象 File uploadFile=new File(dir); if(!uploadFile.exists()||uploadFile==null){ uploadFile.mkdirs(); } //判断指定路径是否存在，不存在则创建路径 String path=uploadFile.getPath()+"/"+fname; OutputStream streamOut=new FileOutputStream(path); int bytesRead=0; byte[] buffer=new byte[8192]; while((bytesRead=streamIn.read(buffer,0,8192))!=-1){ streamOut.write(buffer,0,bytesRead); } streamOut.close(); streamIn.close(); formFile.destroy(); return fname; } /** * 图片下载方法 */ public ActionForward downFile(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response)throws Exception{ String path=request.getParameter("path"); BufferedInputStream bis=null; BufferedOutputStream bos=null; OutputStream fos=null; InputStream fis=null; String filepath=servlet.getServletContext().getRealPath("/"+path); File uploadFile =new File(filepath); fis= new FileInputStream(uploadFile); bis= new BufferedInputStream(fis); fos=response.getOutputStream(); bos= new BufferedOutputStream(fos); response.setHeader("Content-disposition", "attachment;filename="+URLEncoder.encode(path,"utf-8")); int bytesRead=0; byte[] buffer=new byte[8192]; while((bytesRead=bis.read(buffer,0,8192))!=-1){ bos.write(buffer, 0, bytesRead); } bos.flush(); fis.close(); bis.close(); fos.close(); bos.close(); return null; } }