作者简介：Java领域优质创作者、CSDN博客专家 、掘金特邀作者、多年架构师设计经验、腾讯课堂常驻讲师
主要内容：Java项目、毕业设计、简历模板、学习资料、面试题库、技术互助
文末获取源码
项目编号：KS-029
一，项目简介
本项目基于Springboot+vue实现的前后端分离的二手图书交易系统，实现的功能较为简单。用户登陆系统后可以进行图书的发布和浏览，并可以进行全文检索，别的用户可以查看详情联系发布人进行线下交易。
二，环境介绍
语言环境：Java: jdk1.8
数据库：Mysql: mysql5.7
应用服务器：Tomcat: tomcat8.5.31
开发工具：IDEA或eclipse
三，系统展示
用户登陆
首页展示
图书列表
图书详情
个人中心：可以发布图书和管理己发布的图片
添加图书
修改密码
四，核心代码展示
package com.znz.backend.wj.contorller; import com.znz.backend.result.Result; import com.znz.backend.wj.Service.BookService; import com.znz.backend.wj.bean.Book; import net.coobird.thumbnailator.Thumbnails; import org.springframework.beans.factory.annotation.Value; import org.springframework.web.bind.annotation.*; import org.springframework.web.multipart.MultipartFile; import javax.annotation.Resource; import javax.servlet.http.HttpSession; import java.io.File; import java.io.IOException; import java.util.List; import java.util.Map; import java.util.Random; /** * @author znz * @create 2020/02/07/10:52 */ @RestController public class LibraryController { @Resource(name="bookService") private BookService bookService; @Value("${fileupload.path}") private String path; //返回所有的图书 @CrossOrigin @GetMapping("api/books") public List<Book>findAll() throws Exception{ return bookService.findAll(); } //根据用户账号返回所有的书 @CrossOrigin @PostMapping("api/booksByUid") public List<Book>findAllByUid(@RequestBody Book book){ return bookService.findAllByUid(book.getUid()); } //根据种类查询图书 @CrossOrigin @GetMapping("api/categories/{cid}/books") public List<Book> listByCategory(@PathVariable("cid") String cid) throws Exception { if (!cid.equals("0")) { return bookService.findAllByCategory(cid); } else { return findAll(); } } //根据种类和用户名查询用户添加的图书 @CrossOrigin @PostMapping("api/categories/uid/UserBooks") public List<Book> listByCategoryAndUid(@RequestBody Book book){ System.out.println(book); if (!book.getCid().equals("0")) { return bookService.findAllByCategoryAndUid(book.getCid(),book.getUid()); } else { return bookService.findAllByUid(book.getUid()); } } //根据id删除图书 @CrossOrigin @PostMapping("api/delete") public Result deleteBookById(@RequestBody Book book){ int num=bookService.deleteBookById(book.getId()); if(num==0){ return new Result(400); } else { return new Result(200); } } //根据id和用户编号删除图书，并删除本地服务器存储的图片 @PostMapping("api/deleteById") @CrossOrigin public Result deleteBookByIdAndUid(@RequestBody Book book){ int num=bookService.deleteBookByIdAndUid(book); if(num==0){ return new Result(400); } else { if(!book.getCover().equals("")){ String cover=book.getCover().split("/api/file/")[1]; deleteImg(cover); } if(!book.getImg_1().equals("")){ String img_1=book.getImg_1().split("/api/file/")[1]; deleteImg(img_1); } if(!book.getImg_2().equals("")){ String img_2=book.getImg_2().split("/api/file/")[1]; deleteImg(img_2); } if(!book.getImg_3().equals("")){ String img_3=book.getImg_3().split("/api/file/")[1]; deleteImg(img_3); } if(!book.getImg_4().equals("")){ String img_4=book.getImg_4().split("/api/file/")[1]; deleteImg(img_4); } if(!book.getImg_5().equals("")){ String img_5=book.getImg_5().split("/api/file/")[1]; deleteImg(img_5); } return new Result(200); } } @CrossOrigin public void deleteImg(String imgName){ String imgUrl="/home/Youth-imgs/"+imgName; File img=new File(imgUrl); img.delete(); } //添加一本图书 @CrossOrigin @PostMapping("api/insert") public Result insertBook(@RequestBody Book book){ System.out.println(book); if(bookService.insertBook(book)==0){ return new Result(400); } else { return new Result(200); } } //根据书名查找图书 //使用form表单传递数据 @CrossOrigin @PostMapping("api/search") public List<Book> searchBooksByTitle(@RequestParam Map<String,Object> keywords, HttpSession session){ return bookService.finAllByTitle((String)keywords.get("keywords")); } //上传图片 @CrossOrigin @PostMapping("api/uploadImg") public String coversUpload(MultipartFile file) throws Exception { //查看图片类型 String type=file.getContentType().split("/")[1]; if(type==null||file.getSize()>1048576){ return null; } String folder = path; File imageFolder = new File(folder); File f = new File(imageFolder, getRandomString(10) + file.getOriginalFilename() .substring(file.getOriginalFilename().length() - 4)); if (!f.getParentFile().exists()) //如果不存在文件则创建文件夹 f.getParentFile().mkdirs(); try { //存入图片 file.transferTo(f); //对存入的图片进行压缩,并转换为jpeg格式 Thumbnails.of(f) .outputFormat("jpg") .scale(0.5f)//图片比例压缩 .outputQuality(0.5f)//图片清晰度压缩 .toFile(f.getPath().split("\\.")[0]+".jpg"); if(!type.equals("jpeg")){ //删除图片 f.delete(); } String imgURL = "http://localhost:8443/api/file/" + f.getName().split("\\.")[0]+".jpg"; return imgURL; } catch (IOException e) { e.printStackTrace(); return ""; } } //删除图片 @CrossOrigin @PostMapping("api/deleteImg") public void deleteImg(@RequestParam Map<String,Object> requestMap){ String imgName=requestMap.get("imgUrl").toString().split("/api/file/")[1]; deleteImg(imgName); } //生成length个随机数组成的字符串 public String getRandomString(int length) { String base = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; Random random = new Random(); StringBuffer sb = new StringBuffer(); for (int i = 0; i < length; i++) { int number = random.nextInt(base.length()); sb.append(base.charAt(number)); } return sb.toString(); } }
package com.znz.backend.wj.contorller; /** * @author znz * @create 2020/01/27/16:00 */ import com.znz.backend.result.Result; import com.znz.backend.wj.Service.UserService; import com.znz.backend.wj.bean.User; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.*; import javax.annotation.Resource; import java.util.Map; @Controller public class UserController { //Mybatis操作数据库 @Resource(name = "userService") private UserService userService; //登录账号 //注解@CrossOrigin解决跨域问题 //@CrossOrigin @CrossOrigin @PostMapping(value = "api/login") @ResponseBody public String login(@RequestBody User requestUser) { return userService.login(requestUser); } //注册账号 // @PostMapping(value="api/register") // @ResponseBody // public Boolean register(@RequestBody User requestUser){ // return userService.register(requestUser); // } //修改密码 @PostMapping(value = "api/changePassword") @ResponseBody public Result ChangePassword(@RequestParam Map<String, Object> requestMap) { return userService.changePassword(requestMap); } //查找账户是否存在 @PostMapping(value = "api/selectUser") @ResponseBody public Boolean selectUser(@RequestParam Map<String, Object> requestMap) { return userService.selectUser(requestMap); } }
package com.znz.backend.wj.dao; import com.znz.backend.wj.bean.Book; import com.znz.backend.wj.bean.Category; import org.apache.ibatis.annotations.*; import org.apache.ibatis.mapping.FetchType; import org.springframework.stereotype.Repository; import java.util.List; /** * @author znz * @create 2020/02/06/23:21 */ @Mapper @Repository(value = "bookMapper") public interface BookMapper { //根据书的种类找到这一类型的所有书 @Select("select * from book\n" + "where book.cid=#{_parameter}") List<Book> findAllByCategory(String cid); 根据书的种类和用户账户找到这一类型的所有书 @Select("Select * from book where book.cid=#{param1} and book.uid=#{param2}") List<Book>findAllByCategoryAndUid(String cid,String uid); //根据书名模糊找到书 @Select("select * from book\n" + "where book.title like '%${_parameter}%'") List<Book> findAllByTitle(String title); //找到所有的书 @Select("select * from book") List<Book> findAllBooks(); //根据用户账号返回所有的书 @Select("Select * from book where uid=#{_parameter}") List<Book> findAllBooksByUid(String uid); //根据id删除书籍 @Delete("delete from book where id=#{id}") int deleteBookById(int id); //添加图书 @Insert("insert into znz.book(cover,title,author,date,price,newOld,contact,phone,qq,weChat,img_1,img_2,img_3,img_4,img_5,abs,cid,uid)\n" + "values(#{param1},#{param2},#{param3},#{param4},#{param5},#{param6},#{param7},#{param8},#{param9},#{param10},#{param11},#{param12},#{param13},#{param14}, #{param15},#{param16},#{param17},#{param18})") int insertBook(String cover,String title,String author,String date,String price,String newOld,String contact,String phone, String qq,String weChat,String img_1,String img_2,String img_3,String img_4,String img_5,String abs, String cid,String uid); //根据用户账号和书的id删除书籍 @Delete("delete from book where id=#{param1} and uid=#{param2}") int deleteBookByIdAndUid(int id,String uid); }
package com.znz.backend.wj.Service; import com.znz.backend.wj.bean.Book; import com.znz.backend.wj.bean.Category; import com.znz.backend.wj.dao.BookMapper; import org.springframework.stereotype.Service; import javax.annotation.Resource; import java.util.List; /** * @author znz * @create 2020/02/07/10:38 */ @Service(value = "bookService") public class BookService { @Resource(name = "bookMapper") private BookMapper bookMapper; @Resource(name = "categoryService") private CategoryService categoryService; /*******查询******/ //返回所有的图书 public List<Book> findAll() { return bookMapper.findAllBooks(); } //根据用户账号返回所有的书 public List<Book> findAllByUid(String uid) { return bookMapper.findAllBooksByUid(uid); } //根据书的种类返回所有的书 public List<Book> findAllByCategory(String cid) { return bookMapper.findAllByCategory(cid); } //根据书的种类和用户账户返回所有的书 public List<Book> findAllByCategoryAndUid(String cid,String uid){ return bookMapper.findAllByCategoryAndUid(cid,uid); } //根据书名找到所有的数据 public List<Book> finAllByTitle(String title) { return bookMapper.findAllByTitle(title); } //根据id删除图书 public int deleteBookById(int id) { return bookMapper.deleteBookById(id); } //添加一本书 public int insertBook(Book book) { return bookMapper.insertBook(book.getCover(), book.getTitle(), book.getAuthor(), book.getDate(), book.getPrice(), book.getNewOld(), book.getContact() , book.getPhone(), book.getQq(), book.getWeChat(), book.getImg_1(), book.getImg_2(), book.getImg_3(), book.getImg_4(), book.getImg_5(), book.getAbs(), book.getCid(), book.getUid()); } //根据用户账号和书的id删除书籍 public int deleteBookByIdAndUid(Book book) { return bookMapper.deleteBookByIdAndUid(book.getId(), book.getUid()); } }
五，项目总结
本项目结构简单，代码简洁，比较适合做课程设计或期未作业使用，也可以在这个基础上进行功能扩展和增加，实现一个比较完整的毕业设计系统
