基于jsp开发的简单web相册系统

package Servlet; import java.io.File; import java.io.IOException; import java.io.PrintWriter; import java.io.UnsupportedEncodingException; import java.util.Iterator; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import SqlOption.*; public class UploadServlet extends HttpServlet { private static final long serialVersionUID = 1L; public UploadServlet() { super(); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { } protected void doPost(HttpServletRequest request, HttpServletResponse response) { response.setContentType("text/html;charset=utf-8"); //设置文件头形式 PrintWriter out = null; try { out = response.getWriter(); } catch (IOException e1) { e1.printStackTrace(); } // 设置存储路径 String albumname=request.getParameter("album"); String path = "C:/Program Files/Apache Software Foundation/Tomcat 7.0/webapps/last/photo_album/"+albumname+"/"; String [] allowext={"jpg","gif","jpeg","png"};//限制上传的文件格式为图片类型 if (!ServletFileUpload.isMultipartContent(request)) { out.print("只能是 multipart/form-data 类型数据"); return; } // 创建 DiskFileItemFactory 对象 DiskFileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); upload.setFileSizeMax(1024 * 1024 * 2);// 单个文件大小限制为2M upload.setHeaderEncoding("utf-8"); upload.setSizeMax(1024 * 1024 * 10);//总的文件上传类不超过10M List<FileItem> list = null; try { list = upload.parseRequest(request); } catch (FileUploadException e) { e.printStackTrace(); return; } Iterator<FileItem> it = list.iterator();// 遍历list while (it.hasNext()) { FileItem fi = (FileItem) it.next();// 类型转换 //忽视不是文件类型的表单 if (fi.isFormField()) { continue; } else { try { String pathStr = fi.getName();// 得到文件路径 if (pathStr.trim().equals("")) { continue; } int start = pathStr.lastIndexOf("\\");// 得到文件名在路径中的位置 int extindex=pathStr.lastIndexOf(".");//得到文件的后缀名在路径中的位置 String fileName = pathStr.substring(start + 1);// 得到文件名 String exttype=pathStr.substring(extindex+1);//得到文件类型 int i; for( i=0;i<allowext.length;i++) { if(allowext[i].equals(exttype)) break; } if(i!=allowext.length) { File pathDest = new File(path, fileName); if(!pathDest.exists())//如果照片未重复，保存照片 { fi.write(pathDest); AddPhoto add=new AddPhoto(); SelectAlbum scan=new SelectAlbum(); String album=request.getParameter("album"); String sqlpath="photo_album/"+album+"/"+fileName; fileName=fileName.replace("."+exttype,""); add.Addphoto(request.getParameter("album"), fileName, sqlpath); String CoverPath=scan.Selectalbum(album); if(CoverPath.equals("back.jpg")){ scan.update_path(album, sqlpath); } } request.getRequestDispatcher("ShowPhotoServlet").forward(request, response); } } catch (Exception e) { e.printStackTrace(); return; } finally { fi.delete(); } } } } }