java使用BeanUtils封装file类型表单数据到一个对象中

时间：2023-11-24 12:40:56
package com.cc.web.servlet;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import javax.servlet.ServletException;

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.disk.DiskFileItemFactory;

import org.apache.commons.fileupload.servlet.ServletFileUpload;

import org.apache.commons.io.IOUtils;

import com.cc.domain.Category;

import com.cc.domain.Product;

import com.cc.utils.CommonsUtils;

import com.cc.web.service.AdminService;

public class AdminProductServlet extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        Product product=new Product();

        //收集数据的容器

        Map<String, Object> map=new HashMap<String, Object>();

        try {

            //目的：收集表单的数据并封装成实体Product 将上传图片存到服务器磁盘上

            //创建磁盘文件项工厂

            DiskFileItemFactory factory=new DiskFileItemFactory();

            //创建文件上传的核心对象

            ServletFileUpload upload=new ServletFileUpload(factory);

            //解析request获得文件项对象集合

            List<FileItem> parseRequest = upload.parseRequest(request);

            for (FileItem item : parseRequest) {

                //判断是否是普通表单项

                boolean formField = item.isFormField();

                if(formField){

                    //普通表单项获得数据 封装到Product实体中

                    String fieldName = item.getFieldName();

                    String fieldVlue=item.getString("UTF-8");
　　　　　　　　　　　　//放进map里可以自动封装数据

                    map.put(fieldName, fieldVlue);

                }else{

                    //文件上传项获得文件的名称，获得文件的内容

                    String filename=item.getName();

                    String path=this.getServletContext().getRealPath("upload");

                    InputStream in=item.getInputStream();

                    OutputStream out=new FileOutputStream(path+"/"+filename);

                    IOUtils.copy(in, out);

                    in.close();

                    out.close();

                    item.delete();

                    map.put("pinmage", "/"+filename);

                }

            }

            BeanUtils.populate(product, map);

            //是否product对象封装数据完全，表单不具备的需要手动封装

            //private String pid;

            product.setPid(CommonsUtils.getUUID());

            //private Date pdate

            SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd");

            Date date=new Date();

            String format2 = format.format(date);

            Date pdate=format.parse(format2);

            product.setPdate(pdate);

            //private int pflag;

            product.setPflag(0);

            //private Category category;

            Category category=new Category();

            category.setCid(map.get("cid").toString());

            product.setCategory(category);

            //将Product传递给service层

            AdminService service =new AdminService();

            service.saveProduct(product);

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        doGet(request, response);

    }

}

相关文章