Design and implementation of ssm+vue second-hand car trading website 287
Development tools: idea or eclipse
database mysql5.7+
database link tools: navcat, little dolphin and other
technologies: ssm
Summary
Since the development of network technology and computer technology, it has a profound theoretical foundation and has been fully used in reality. In particular, software based on computer operation has attracted attention from all walks of life. In addition, people have now entered the information age, so the promotion and management of information is very critical. Therefore, it is necessary to computerize and systematize the management of second-hand car transaction information. Designing and developing a used car trading website will not only save manpower and management costs, but also safely store a huge amount of data. It does not take a lot of time to maintain and retrieve used car trading information, which is very convenient.
The used car trading website creates a data table in MySQL to save information, and is written using the SSM framework and Java language. And design and implement according to the software design and development process. The system is user-friendly and fully functional. Administrators manage cars and car brands, manage car information and user messages, and manage orders with different statuses. Users view car information, collect cars, comment on cars, purchase cars, and view orders with different statuses.
While the used car trading website standardizes the used car trading information, it can also promptly detect erroneous data through the validity rules of data input, so that the data entry can achieve the purpose of accuracy, thereby improving the reliability of the data provided by the used car trading website. to minimize the error rate of system data.
Keywords : used car trading website; MySQL; SSM framework
Abstract
Network technology and computer technology have developed so far, they already have a solid theoretical foundation and have been fully used in reality, especially the software based on computer operation has attracted the attention of all walks of life. In addition, now that people have entered the information age, the promotion and management of information is very important. Therefore, it is necessary to computerize and systemize the management of used car transaction information. The design and development of a used car trading website will not only save manpower and management costs, but also store a huge amount of data safely, and it will not take a lot of time to maintain and retrieve used car transaction information, which is very convenient.
The second-hand car trading website is to establish a data table in MySQL to save the information, using the SSM framework and Java language to write. And in accordance with the software design and development process for design and implementation. The system is friendly and fully functional. The administrator manages cars and car brands, manages car information and user messages, and manages orders in different states. Users view car information, favorite cars, comment on cars, buy cars, and view orders in different states.
While standardizing used car transaction information, the used car trading website can also detect incorrect data in time through the validity rules of data input, so that the data entry can achieve the purpose of accuracy, thereby improving the reliability of the data provided by the used car trading website Performance, which minimizes the error rate of system data.
Key Words：Used car trading website; MySQL; SSM framework
package com.controller;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Map;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Date;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import com.utils.ValidatorUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import com.baomidou.mybatisplus.mapper.EntityWrapper;
import com.baomidou.mybatisplus.mapper.Wrapper;
import com.annotation.IgnoreAuth;
import com.entity.OrdersEntity;
import com.entity.view.OrdersView;
import com.service.OrdersService;
import com.service.TokenService;
import com.utils.PageUtils;
import com.utils.R;
import com.utils.MD5Util;
import com.utils.MPUtil;
import com.utils.CommonUtil;
/**
* 订单
* 后端接口
* @author
* @email
* @date 2021-04-23 13:12:52
*/
@RestController
@RequestMapping("/orders")
public class OrdersController {
@Autowired
private OrdersService ordersService;
/**
* 后端列表
*/
@RequestMapping("/page")
public R page(@RequestParam Map<String, Object> params,OrdersEntity orders,
HttpServletRequest request){
if(!request.getSession().getAttribute("role").toString().equals("管理员")) {
orders.setUserid((Long)request.getSession().getAttribute("userId"));
}
EntityWrapper<OrdersEntity> ew = new EntityWrapper<OrdersEntity>();
PageUtils page = ordersService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, orders), params), params));
return R.ok().put("data", page);
}
/**
* 前端列表
*/
@RequestMapping("/list")
public R list(@RequestParam Map<String, Object> params,OrdersEntity orders,
HttpServletRequest request){
EntityWrapper<OrdersEntity> ew = new EntityWrapper<OrdersEntity>();
PageUtils page = ordersService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, orders), params), params));
return R.ok().put("data", page);
}
/**
* 列表
*/
@RequestMapping("/lists")
public R list( OrdersEntity orders){
EntityWrapper<OrdersEntity> ew = new EntityWrapper<OrdersEntity>();
ew.allEq(MPUtil.allEQMapPre( orders, "orders"));
return R.ok().put("data", ordersService.selectListView(ew));
}
/**
* 查询
*/
@RequestMapping("/query")
public R query(OrdersEntity orders){
EntityWrapper< OrdersEntity> ew = new EntityWrapper< OrdersEntity>();
ew.allEq(MPUtil.allEQMapPre( orders, "orders"));
OrdersView ordersView = ordersService.selectView(ew);
return R.ok("查询订单成功").put("data", ordersView);
}
/**
* 后端详情
*/
@RequestMapping("/info/{id}")
public R info(@PathVariable("id") Long id){
OrdersEntity orders = ordersService.selectById(id);
return R.ok().put("data", orders);
}
/**
* 前端详情
*/
@RequestMapping("/detail/{id}")
public R detail(@PathVariable("id") Long id){
OrdersEntity orders = ordersService.selectById(id);
return R.ok().put("data", orders);
}
/**
* 后端保存
*/
@RequestMapping("/save")
public R save(@RequestBody OrdersEntity orders, HttpServletRequest request){
orders.setId(new Date().getTime()+new Double(Math.floor(Math.random()*1000)).longValue());
//ValidatorUtils.validateEntity(orders);
orders.setUserid((Long)request.getSession().getAttribute("userId"));
ordersService.insert(orders);
return R.ok();
}
/**
* 前端保存
*/
@RequestMapping("/add")
public R add(@RequestBody OrdersEntity orders, HttpServletRequest request){
orders.setId(new Date().getTime()+new Double(Math.floor(Math.random()*1000)).longValue());
//ValidatorUtils.validateEntity(orders);
ordersService.insert(orders);
return R.ok();
}
/**
* 修改
*/
@RequestMapping("/update")
public R update(@RequestBody OrdersEntity orders, HttpServletRequest request){
//ValidatorUtils.validateEntity(orders);
ordersService.updateById(orders);//全部更新
return R.ok();
}
/**
* 删除
*/
@RequestMapping("/delete")
public R delete(@RequestBody Long[] ids){
ordersService.deleteBatchIds(Arrays.asList(ids));
return R.ok();
}
/**
* 提醒接口
*/
@RequestMapping("/remind/{columnName}/{type}")
public R remindCount(@PathVariable("columnName") String columnName, HttpServletRequest request,
@PathVariable("type") String type,@RequestParam Map<String, Object> map) {
map.put("column", columnName);
map.put("type", type);
if(type.equals("2")) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar c = Calendar.getInstance();
Date remindStartDate = null;
Date remindEndDate = null;
if(map.get("remindstart")!=null) {
Integer remindStart = Integer.parseInt(map.get("remindstart").toString());
c.setTime(new Date());
c.add(Calendar.DAY_OF_MONTH,remindStart);
remindStartDate = c.getTime();
map.put("remindstart", sdf.format(remindStartDate));
}
if(map.get("remindend")!=null) {
Integer remindEnd = Integer.parseInt(map.get("remindend").toString());
c.setTime(new Date());
c.add(Calendar.DAY_OF_MONTH,remindEnd);
remindEndDate = c.getTime();
map.put("remindend", sdf.format(remindEndDate));
}
}
Wrapper<OrdersEntity> wrapper = new EntityWrapper<OrdersEntity>();
if(map.get("remindstart")!=null) {
wrapper.ge(columnName, map.get("remindstart"));
}
if(map.get("remindend")!=null) {
wrapper.le(columnName, map.get("remindend"));
}
if(!request.getSession().getAttribute("role").toString().equals("管理员")) {
wrapper.eq("userid", (Long)request.getSession().getAttribute("userId"));
}
int count = ordersService.selectCount(wrapper);
return R.ok().put("count", count);
}
}