javaWeb实现书城项目

package com.wyw.bookstroc.servlet.manager; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.lang.reflect.InvocationTargetException; import java.sql.SQLException; import java.text.SimpleDateFormat; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.UUID; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.beanutils.BeanUtils; 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 org.apache.commons.io.IOUtils; import com.sun.org.apache.bcel.internal.generic.NEW; import com.wyw.bookstroe.domain.Products; import com.wyw.bookstroe.service.ProductsService; import com.wyw.bookstroe.service.impl.ProductsServiceimpl; import com.wyw.bookstroe.utils.IdUtils; import sun.nio.ch.IOUtil; import sun.print.PrinterJobWrapper; @WebServlet("/addProduct") public class addProduct extends HttpServlet { private static final long serialVersionUID = 1L; public addProduct() { super(); // TODO Auto-generated constructor stub } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub response.getWriter().append("Served at: ").append(request.getContextPath()); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=utf-8"); request.setCharacterEncoding("utf-8"); //创建Products，将上传数据封装 Products p = new Products(); //用于保存id和图片路径 Map<String, String> map=new HashMap<>(); //封装id map.put("id", IdUtils.getUUID()); //实例化作用：可以设置缓存大小以及临时文件保存位置 DiskFileItemFactory factory=new DiskFileItemFactory(); //设置临时文件位置 factory.setRepository(new File(this.getServletContext().getRealPath("/temp"))); // factory.setSizeThreshold(1024*1024*10); ServletFileUpload upload=new ServletFileUpload(factory); //处理上传文件中文乱码 upload.setHeaderEncoding("utf-8"); try { List<FileItem> items=upload.parseRequest(request); for(FileItem item:items){ if(item.isFormField()){ String fileName=item.getFieldName(); String value=item.getString("utf-8"); map.put(fileName, value); }else{ String fileName=item.getName(); fileName=fileName.substring(fileName.lastIndexOf("\\")+1); fileName=UUID.randomUUID().toString()+"_"+fileName; SimpleDateFormat sdFormat=new SimpleDateFormat("yyyyMMdd"); String date=sdFormat.format(new Date()); fileName=date+fileName; String imgurl_parent="/productImg/"; File parentDir = new File(this.getServletContext().getRealPath(imgurl_parent)); if (!parentDir.exists()) { parentDir.mkdir(); } String imgurl=imgurl_parent+"/"+fileName; map.put("imgurl", imgurl); IOUtils.copy(item.getInputStream(), new FileOutputStream(new File(parentDir,fileName))); item.delete(); } } } catch (FileUploadException e) { // TODO Auto-generated catch block e.printStackTrace(); } try { BeanUtils.populate(p, map); } catch (IllegalAccessException | InvocationTargetException e) { // TODO Auto-generated catch block e.printStackTrace(); } ProductsService service=new ProductsServiceimpl(); try { service.addProducts(p); response.sendRedirect(request.getContextPath()+"/ListProducts"); } catch (SQLException e) { // TODO Auto-generated catch block response.getWriter().write("添加商品失败"); e.printStackTrace(); return; } } }