今天将为大家分析一个网上拍卖系统(随着Internet技术的发展和互联网的日益普及以及电子商务的发展,电子商务活动日益繁荣,C2C模式的巨大优势将使它成为未来电子商务领域重要的一部分。网上拍卖迅速成为一种非常活跃的C2C电子商务模式。详细介绍了JSP+Servlet+JavaBean的三层架构模式在电子商务平台上应用的相关技术。该系统经实践证明是稳定、安全和高效的,具有较高的实用价值。),该项目使用框架为SSM(MYECLIPSE),选用开发工具为MYECLIPSE。网上拍卖系统为一个 后台项目。
为了完成该系统,我们首先需要对该系统进行需求分析。一个网上拍卖系统应包含用户角色有管理员、买家、卖家。为了能让用户顺利登陆系统完成相关操作,需要为每种登陆角色设置账户和密码字段。
为了完成系统的功能需要为卖家设置商品表,记录商品信息。在商品表中定义了两者的关联关系,其中商品的卖家名字与卖家的mingzi字段对应、商品的卖家id与卖家的id字段对应
。
总结得出该系统所有数据为:管理员(admin)、买家(maijia)、卖家(chushouzhe)、商品(shangping)
管理员表
字段名 | 类型 | 属性 | 描述
id | INT(11) | PRIMARY KEY | 管理员id
username | VARCHAR(255) | | 账号
password | VARCHAR(255) | | 密码
买家表
字段名 | 类型 | 属性 | 描述
id | INT(11) | PRIMARY KEY | 买家id
mingzi | VARCHAR(255) | | 名字
username | VARCHAR(255) | | 账号
password | VARCHAR(255) | | 密码
yue | VARCHAR(255) | | 余额
卖家表
字段名 | 类型 | 属性 | 描述
id | INT(11) | PRIMARY KEY | 卖家id
mingzi | VARCHAR(255) | | 名字
username | VARCHAR(255) | | 账号
password | VARCHAR(255) | | 密码
nianling | VARCHAR(255) | | 年龄
xingbie | VARCHAR(255) | | 性别
yue | VARCHAR(255) | | 余额
商品表
字段名 | 类型 | 属性 | 描述
id | INT(11) | PRIMARY KEY | 商品id
mingcheng | VARCHAR(255) | | 名称
jiage | VARCHAR(255) | | 价格
chushouzhe | VARCHAR(255) | | 卖家名字
chushouzheid | VARCHAR(255) | | 卖家id
shuoming | VARCHAR(255) | | 说明
sql建表语句
SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- ----------------------------
-- Table structure for ggwangshangpaimai
-- ----------------------------
DROP TABLE IF EXISTS `t_admin`;
CREATE TABLE `t_admin` (`id` INT(11) NOT NULL AUTO_INCREMENT COMMENT '管理员id',`username` VARCHAR(255) DEFAULT NULL COMMENT '账号',`password` VARCHAR(255) DEFAULT NULL COMMENT '密码',PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='管理员';
-- ----------------------------
DROP TABLE IF EXISTS `t_maijia`;
CREATE TABLE `t_maijia` (`id` INT(11) NOT NULL AUTO_INCREMENT COMMENT '买家id',`mingzi` VARCHAR(255) DEFAULT NULL COMMENT '名字',`username` VARCHAR(255) DEFAULT NULL COMMENT '账号',`password` VARCHAR(255) DEFAULT NULL COMMENT '密码',`yue` VARCHAR(255) DEFAULT NULL COMMENT '余额',PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='买家';
-- ----------------------------
DROP TABLE IF EXISTS `t_chushouzhe`;
CREATE TABLE `t_chushouzhe` (`id` INT(11) NOT NULL AUTO_INCREMENT COMMENT '卖家id',`mingzi` VARCHAR(255) DEFAULT NULL COMMENT '名字',`username` VARCHAR(255) DEFAULT NULL COMMENT '账号',`password` VARCHAR(255) DEFAULT NULL COMMENT '密码',`nianling` VARCHAR(255) DEFAULT NULL COMMENT '年龄',`xingbie` VARCHAR(255) DEFAULT NULL COMMENT '性别',`yue` VARCHAR(255) DEFAULT NULL COMMENT '余额',PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='卖家';
-- ----------------------------
DROP TABLE IF EXISTS `t_shangping`;
CREATE TABLE `t_shangping` (`id` INT(11) NOT NULL AUTO_INCREMENT COMMENT '商品id',`mingcheng` VARCHAR(255) DEFAULT NULL COMMENT '名称',`jiage` VARCHAR(255) DEFAULT NULL COMMENT '价格',`chushouzhe` VARCHAR(255) DEFAULT NULL COMMENT '卖家名字',`chushouzheid` INT(11) DEFAULT NULL COMMENT '卖家id',`shuoming` VARCHAR(5000) DEFAULT NULL COMMENT '说明',PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='商品';
商品处理控制层
package org.mypro.front;
import java.io.File;
import java.io.IOException;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.Date;
import java.util.List;
import javax.jms.Session;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.mypro.dao.ShangpingMapper;
import org.mypro.entity.Shangping;
import org.mypro.entity.ShangpingExample;
import org.mypro.entity.Chushouzhe;
import org.mypro.entity.ChushouzheExample;
import org.mypro.dao.ChushouzheMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.multipart.MultipartFile;
@Controller
@RequestMapping(value = "/")
public class ShangpingController {
private static final Log logger = LogFactory.getLog(ShangpingController.class);
@Autowired
private ShangpingMapper shangpingdao; // 定义chushouzhedao参数
@Autowired
private ChushouzheMapper chushouzhedao;
//定义方法tianjiashangping,响应页面tianjiashangping请求
@RequestMapping(value = "tianjiashangping")
public String tianjiashangping(HttpServletRequest request, HttpServletResponse response,HttpSession session,String backurl) {
logger.debug("ShangpingController.tianjiashangping ......");
// 定义 example1为 ChushouzheExample的实例
ChushouzheExample example1 = new ChushouzheExample();
List chushouzheall = chushouzhedao.selectByExample(example1);
request.setAttribute("chushouzheall", chushouzheall);
if(backurl != null && backurl.indexOf("tianjiashangping.action") == -1){
return "forward:/" + backurl; }
return "tianjiashangping";
}
@RequestMapping(value = "tianjiashangpingact")
public String tianjiashangpingact(HttpServletRequest request,HttpSession session, HttpServletResponse response,Shangping shangping,String backurl) throws IOException {
logger.debug("ShangpingController.tianjiashangpingact ......");
shangpingdao.insert(shangping);
request.setAttribute("message", "添加商品成功");
if(backurl != null && backurl.indexOf("tianjiashangpingact.action") == -1){
return "forward:/" + backurl; }
//返回tianjiashangping方法
return "forward:/tianjiashangping.action";
}
//定义shangpingguanli方法响应页面请求
@RequestMapping(value = "shangpingguanli")
public String shangpingguanli(HttpServletRequest request,HttpSession session, HttpServletResponse response,String backurl) {
logger.debug("ShangpingController.shangpingguanli ......");
ShangpingExample example = new ShangpingExample();
List shangpingall = shangpingdao.selectByExample(example);
request.setAttribute("shangpingall", shangpingall);
if(backurl != null && backurl.indexOf("shangpingguanli.action") == -1){
return "forward:/" + backurl; }
return "shangpingguanli";
}
// 定义 shangpingchakan方法
@RequestMapping(value = "shangpingchakan")
public String shangpingchakan(HttpServletRequest request,HttpSession session, HttpServletResponse response,String backurl) {
logger.debug("ShangpingController.shangpingchakan ......");
ShangpingExample example = new ShangpingExample();
List shangpingall = shangpingdao.selectByExample(example);
request.setAttribute("shangpingall", shangpingall);
if(backurl != null && backurl.indexOf("shangpingchakan.action") == -1){
return "forward:/" + backurl; }
return "shangpingchakan";
}
// 定义 xiugaishangping方法
@RequestMapping(value = "xiugaishangping")
public String xiugaishangping(HttpServletRequest request, HttpServletResponse response,HttpSession session,int id,String backurl){
logger.debug("ShangpingController.xiugaishangping ......");
Shangping shangping = shangpingdao.selectByPrimaryKey(id);
// 定义 example1为 ChushouzheExample的实例
ChushouzheExample example1 = new ChushouzheExample();
List chushouzheall = chushouzhedao.selectByExample(example1);
request.setAttribute("chushouzheall", chushouzheall);
request.setAttribute("shangping", shangping);
if(backurl != null && backurl.indexOf("xiugaishangping.action") == -1){
return "forward:/" + backurl; }
return "xiugaishangping";
}
// 定义xiugaishangpingact处理商品修改
@RequestMapping(value = "xiugaishangpingact")
public String xiugaishangpingact(HttpServletRequest request, HttpServletResponse response,Shangping shangping,HttpSession session,String backurl) throws IOException {
logger.debug("ShangpingController.xiugaishangpingact ......");
shangpingdao.updateByPrimaryKeySelective(shangping);
request.setAttribute("message", "修改商品信息成功");
if(backurl != null && backurl.indexOf("xiugaishangpingact.action") == -1){
return "forward:/" + backurl; }
return "forward:/shangpingguanli.action";
}
// 定义shanchushangping,处理删除商品
@RequestMapping(value = "shanchushangping")
public String shanchushangping(HttpServletRequest request, HttpServletResponse response,HttpSession session,int id,String backurl){
logger.debug("ShangpingController.shanchushangping ......");
shangpingdao.deleteByPrimaryKey(id);
request.setAttribute("message", "删除商品成功");
if(backurl != null && backurl.indexOf("shanchushangping.action") == -1){
return "forward:/" + backurl; }
return "forward:/shangpingguanli.action";
}
// 定义sousuoshangping方法,处理搜索操作
@RequestMapping(value = "sousuoshangping")
public String sousuoshangping(HttpServletRequest request, HttpServletResponse response,HttpSession session,String search,String backurl) {logger.
debug("ShangpingController.sousuoshangping ......");ShangpingExample example
= new ShangpingExample();ShangpingExample.
Criteria criteria = example.createCriteria();
if(search != null){criteria.
andMingchengLike("%" + search + "%");
}
List shangpingall = shangpingdao.selectByExample(example);request.
setAttribute("shangpingall", shangpingall);
if(backurl != null && backurl.indexOf("sousuoshangping.action") == -1){
return "forward:/" + backurl; }
return "sousuoshangping";
}
// 定义ShangpingpinglunMapper@RequestMapping
(value = "shangpingxiangqing")
public String shangpingxiangqing(HttpServletRequest request,HttpSession session, HttpServletResponse response,int id,String backurl) {logger.
debug("ShangpingController.shangpingxiangqing ......");Shangping shangping
= shangpingdao.selectByPrimaryKey(id);request.
setAttribute("shangping", shangping);
if(backurl != null && backurl.indexOf("shangpingxiangqing.action") == -1){
return "forward:/" + backurl; }
return "shangpingxiangqing";
}
// 上传文件图片等
public String uploadUtile(MultipartFile file, HttpServletRequest request) throws IOException {
// 根据当前时间生成时间字符串
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSS");
String res = sdf.format(new Date());
// uploads文件夹位置
String rootPath = request.getSession().getServletContext().getRealPath("resource/uploads/");
// 原始名称
String originalFileName = file.getOriginalFilename();
// 新文件名
String newFileName = "sliver" + res + originalFileName.substring(originalFileName.lastIndexOf("."));
// 创建年月文件夹
Calendar date = Calendar.getInstance();
File dateDirs = new File(date.get(Calendar.YEAR) + File.separator + (date.get(Calendar.MONTH)+1));
// 新文件
File newFile = new File(rootPath + File.separator + dateDirs + File.separator + newFileName);
// 判断目标文件所在目录是否存在
if( !newFile.getParentFile().exists()) {
// 如果目标文件所在的目录不存在,则创建父目录newFile.
getParentFile().mkdirs();
}
System.out.println(newFile);
// 将内存中的数据写入磁盘file.
transferTo(newFile);
// 完整的url
String fileUrl = date.get(Calendar.YEAR) + "/" + (date.get(Calendar.MONTH)+1) + "/" + newFileName;
return fileUrl;
}}