计算机SSM选题 - SSM+JSP校园二手交易系统

妖狐艹你老母 2024-03-27 18:46 122阅读 0赞

> 开发语言：Java  
> Java开发工具：JDK1.8  
> 后端框架：SSM  
> 前端：采用JSP技术开发  
> 数据库：MySQL5.7和Navicat管理工具结合  
> 服务器：Tomcat8.5  
> 开发软件：IDEA / Eclipse  
> 是否Maven项目：是

--------------------

> ### 前言 ###

基于SSM+JSP校园二手交易系统有三大角色：

用户前台：首页、二手商品、求购信息、交流论坛、公告信息、个人中心、后台管理、购物车、售后客服。

卖家：个人中心、二手商品管理、求购信息管理、卖家警告管理、信誉评价管理、卖家沟通管理、用户沟通管理、订单管理。

管理员：个人中心、用户管理、卖家管理、二手商品管理、求购信息管理、商品分类管理、用户警告管理、卖家警告管理、信誉评价管理、卖家沟通管理、用户沟通管理、交流论坛、系统管理。

> #### 前台首页 ####

用户登录注册页面。

![45484ef95f04422ab0529a8ddecda446.png][]

用户登录进入系统有首页、二手商品、求购信息、交流论坛、公告信息、个人中心、后台管理、购物车、售后客服。![480ef12aae624917878c4aa22bbe5dd9.png][]

商品信息页面。

![4ad61d4ee7df41078ff1a7748a191f4b.png][]

公告信息页面。

![078598db0ac9484a931545f73803ba72.png][]

用户求购信息。

![44e032e856fe4375b497674c75e54d89.png][]

交流论坛页面。

![e4e7a39c46f74d3b9555338cada44f54.png][]

个人中心页面。

![eb14f7bf876e4895abbcc39b2d7d5983.png][]

> ### 卖家 ###

卖家登录页面。

![61edc98febdf44eda59249a00d8748e7.png][]

卖家进入登录系统会有个人中心、二手商品管理、求购信息管理、卖家警告管理、信誉评价管理、卖家沟通管理、用户沟通管理、订单管理。![f032a0cfe207402ea6a93a22b8ca79d1.png][]

> #### 管理员 ####

管理员进入系统有个人中心、用户管理、卖家管理、二手商品管理、求购信息管理、商品分类管理、用户警告管理、卖家警告管理、信誉评价管理、卖家沟通管理、用户沟通管理、交流论坛、系统管理。![988a942defff4375993f4661615f8524.png][]

![5449352cfe1d4601bfd03cad8c4078e5.png][]

![787ca09f48bd4bbca55c159fa035c2f8.png][]

--------------------

> ### 登录模块核心代码 ###

package com.controller;
    
        import java.util.Arrays;
        import java.util.Calendar;
        import java.util.Date;
        import java.util.Map;
        
        import javax.servlet.http.HttpServletRequest;
        
        import org.springframework.beans.factory.annotation.Autowired;
        import org.springframework.stereotype.Controller;
        import org.springframework.web.bind.annotation.GetMapping;
        import org.springframework.web.bind.annotation.PathVariable;
        import org.springframework.web.bind.annotation.PostMapping;
        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.ResponseBody;
        import org.springframework.web.bind.annotation.RestController;
        
        import com.annotation.IgnoreAuth;
        import com.baomidou.mybatisplus.mapper.EntityWrapper;
        import com.entity.TokenEntity;
        import com.entity.UserEntity;
        import com.service.TokenService;
        import com.service.UserService;
        import com.utils.CommonUtil;
        import com.utils.MD5Util;
        import com.utils.MPUtil;
        import com.utils.PageUtils;
        import com.utils.R;
        import com.utils.ValidatorUtils;
        
        /**
         * 登录相关
         */
        @RequestMapping("users")
        @RestController
        public class UserController{
        
        	
        	@Autowired
        	private UserService userService;
        	
        	@Autowired
        	private TokenService tokenService;
        
        	/**
        	 * 登录
        	 */
        	@IgnoreAuth
        	@PostMapping(value = "/login")
        	public R login(String username, String password, String captcha, HttpServletRequest request) {
        
        		UserEntity user = userService.selectOne(new EntityWrapper().eq("username", username));
        		if(user==null || !user.getPassword().equals(password)) {
        
        			return R.error("账号或密码不正确");
        		}
        		String token = tokenService.generateToken(user.getId(),username, "users", user.getRole());
        		return R.ok().put("token", token);
        	}
        	
        	/**
        	 * 注册
        	 */
        	@IgnoreAuth
        	@PostMapping(value = "/register")
        	public R register(@RequestBody UserEntity user){
        
        //    	ValidatorUtils.validateEntity(user);
            	if(userService.selectOne(new EntityWrapper().eq("username", user.getUsername())) !=null) {
        
            		return R.error("用户已存在");
            	}
                userService.insert(user);
                return R.ok();
            }
        
        	/**
        	 * 退出
        	 */
        	@GetMapping(value = "logout")
        	public R logout(HttpServletRequest request) {
        
        		request.getSession().invalidate();
        		return R.ok("退出成功");
        	}
        	
        	/**
             * 密码重置
             */
            @IgnoreAuth
        	@RequestMapping(value = "/resetPass")
            public R resetPass(String username, HttpServletRequest request){
        
            	UserEntity user = userService.selectOne(new EntityWrapper().eq("username", username));
            	if(user==null) {
        
            		return R.error("账号不存在");
            	}
            	user.setPassword("123456");
                userService.update(user,null);
                return R.ok("密码已重置为：123456");
            }
        	
        	/**
             * 列表
             */
            @RequestMapping("/page")
            public R page(@RequestParam Map params,UserEntity user){
        
                EntityWrapper ew = new EntityWrapper();
            	PageUtils page = userService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.allLike(ew, user), params), params));
                return R.ok().put("data", page);
            }
        
        	/**
             * 列表
             */
            @RequestMapping("/list")
            public R list( UserEntity user){
        
               	EntityWrapper ew = new EntityWrapper();
              	ew.allEq(MPUtil.allEQMapPre( user, "user")); 
                return R.ok().put("data", userService.selectListView(ew));
            }
        
            /**
             * 信息
             */
            @RequestMapping("/info/{id}")
            public R info(@PathVariable("id") String id){
        
                UserEntity user = userService.selectById(id);
                return R.ok().put("data", user);
            }
            
            /**
             * 获取用户的session用户信息
             */
            @RequestMapping("/session")
            public R getCurrUser(HttpServletRequest request){
        
            	Long id = (Long)request.getSession().getAttribute("userId");
                UserEntity user = userService.selectById(id);
                return R.ok().put("data", user);
            }
        
            /**
             * 保存
             */
            @PostMapping("/save")
            public R save(@RequestBody UserEntity user){
        
        //    	ValidatorUtils.validateEntity(user);
            	if(userService.selectOne(new EntityWrapper().eq("username", user.getUsername())) !=null) {
        
            		return R.error("用户已存在");
            	}
                userService.insert(user);
                return R.ok();
            }
        
            /**
             * 修改
             */
            @RequestMapping("/update")
            public R update(@RequestBody UserEntity user){
        
        //        ValidatorUtils.validateEntity(user);
                userService.updateById(user);//全部更新
                return R.ok();
            }
        
            /**
             * 删除
             */
            @RequestMapping("/delete")
            public R delete(@RequestBody Long[] ids){
        
                userService.deleteBatchIds(Arrays.asList(ids));
                return R.ok();
            }
        }

> ### 文件上传核心代码 ###

package com.controller;
    
    import java.io.File;
    import java.io.FileNotFoundException;
    import java.io.IOException;
    import java.util.Arrays;
    import java.util.Date;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;
    import java.util.Random;
    import java.util.UUID;
    
    import org.apache.commons.io.FileUtils;
    import org.apache.commons.lang3.StringUtils;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.http.HttpHeaders;
    import org.springframework.http.HttpStatus;
    import org.springframework.http.MediaType;
    import org.springframework.http.ResponseEntity;
    import org.springframework.util.ResourceUtils;
    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 org.springframework.web.multipart.MultipartFile;
    
    import com.annotation.IgnoreAuth;
    import com.baomidou.mybatisplus.mapper.EntityWrapper;
    import com.entity.ConfigEntity;
    import com.entity.EIException;
    import com.service.ConfigService;
    import com.utils.R;
    
    /**
     * 上传文件映射表
     */
    @RestController
    @RequestMapping("file")
    @SuppressWarnings({
        "unchecked","rawtypes"})
    public class FileController{
        
    	@Autowired
        private ConfigService configService;
    	/**
    	 * 上传文件
    	 */
    	@RequestMapping("/upload")
    	public R upload(@RequestParam("file") MultipartFile file,String type) throws Exception {
        
    		if (file.isEmpty()) {
        
    			throw new EIException("上传文件不能为空");
    		}
    		String fileExt = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")+1);
    		File path = new File(ResourceUtils.getURL("classpath:static").getPath());
    		if(!path.exists()) {
        
    		    path = new File("");
    		}
    		File upload = new File(path.getAbsolutePath(),"/upload/");
    		if(!upload.exists()) {
        
    		    upload.mkdirs();
    		}
    		String fileName = new Date().getTime()+"."+fileExt;
    		File dest = new File(upload.getAbsolutePath()+"/"+fileName);
    		file.transferTo(dest);
    		FileUtils.copyFile(dest, new File("C:\\Users\\Desktop\\jiadian\\springbootl7own\\src\\main\\resources\\static\\upload"+"/"+fileName));
    		if(StringUtils.isNotBlank(type) && type.equals("1")) {
        
    			ConfigEntity configEntity = configService.selectOne(new EntityWrapper().eq("name", "faceFile"));
    			if(configEntity==null) {
        
    				configEntity = new ConfigEntity();
    				configEntity.setName("faceFile");
    				configEntity.setValue(fileName);
    			} else {
        
    				configEntity.setValue(fileName);
    			}
    			configService.insertOrUpdate(configEntity);
    		}
    		return R.ok().put("file", fileName);
    	}
    	
    	/**
    	 * 下载文件
    	 */
    	@IgnoreAuth
    	@RequestMapping("/download")
    	public ResponseEntity download(@RequestParam String fileName) {
        
    		try {
        
    			File path = new File(ResourceUtils.getURL("classpath:static").getPath());
    			if(!path.exists()) {
        
    			    path = new File("");
    			}
    			File upload = new File(path.getAbsolutePath(),"/upload/");
    			if(!upload.exists()) {
        
    			    upload.mkdirs();
    			}
    			File file = new File(upload.getAbsolutePath()+"/"+fileName);
    			if(file.exists()){
        
    				/*if(!fileService.canRead(file, SessionManager.getSessionUser())){
    					getResponse().sendError(403);
    				}*/
    				HttpHeaders headers = new HttpHeaders();
    			    headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);    
    			    headers.setContentDispositionFormData("attachment", fileName);    
    			    return new ResponseEntity(FileUtils.readFileToByteArray(file),headers, HttpStatus.CREATED);
    			}
    		} catch (IOException e) {
        
    			e.printStackTrace();
    		}
    		return new ResponseEntity(HttpStatus.INTERNAL_SERVER_ERROR);
    	}
    	
    }

> ### 封装代码 ###

package com.utils;
    
    import java.util.HashMap;
    import java.util.Map;
    
    /**
     * 返回数据
     */
    public class R extends HashMap {
        
    	private static final long serialVersionUID = 1L;
    	
    	public R() {
        
    		put("code", 0);
    	}
    	
    	public static R error() {
        
    		return error(500, "未知异常，请联系管理员");
    	}
    	
    	public static R error(String msg) {
        
    		return error(500, msg);
    	}
    	
    	public static R error(int code, String msg) {
        
    		R r = new R();
    		r.put("code", code);
    		r.put("msg", msg);
    		return r;
    	}
    
    	public static R ok(String msg) {
        
    		R r = new R();
    		r.put("msg", msg);
    		return r;
    	}
    	
    	public static R ok(Map map) {
        
    		R r = new R();
    		r.putAll(map);
    		return r;
    	}
    	
    	public static R ok() {
        
    		return new R();
    	}
    
    	public R put(String key, Object value) {
        
    		super.put(key, value);
    		return this;
    	}
    }

## 项目获取: ##

[https://gitee.com/sinonfin/L-javaWebSha/tree/master][https_gitee.com_sinonfin_L-javaWebSha_tree_master]

[45484ef95f04422ab0529a8ddecda446.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/13/e7cc2fb651c24f228adf7342caf7184b.png
[480ef12aae624917878c4aa22bbe5dd9.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/13/719c807fdef643ce93c4e9db75103ddd.png
[4ad61d4ee7df41078ff1a7748a191f4b.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/13/418ca5fffa264ea1b0eab039b2e466b3.png
[078598db0ac9484a931545f73803ba72.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/13/6bd672869eac4eed9601c594e11f904e.png
[44e032e856fe4375b497674c75e54d89.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/13/c4110438864145378d90579281893c46.png
[e4e7a39c46f74d3b9555338cada44f54.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/13/50dd7c060a70425db89c1d2bce790834.png
[eb14f7bf876e4895abbcc39b2d7d5983.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/13/0babc8d99fda43289928822fcb58511d.png
[61edc98febdf44eda59249a00d8748e7.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/13/154c4f6aba8e47c38e3e9e28793b8cfe.png
[f032a0cfe207402ea6a93a22b8ca79d1.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/13/08ee307a71514b70bdf46662ae094b19.png
[988a942defff4375993f4661615f8524.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/13/c762efe78d3d408abbd3d4e67372e146.png
[5449352cfe1d4601bfd03cad8c4078e5.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/13/c02d2aaec8ad413382357c26687d4b45.png
[787ca09f48bd4bbca55c159fa035c2f8.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/13/5d3f814ec4e14d95ab9fbbcbb5bd8a0a.png
[https_gitee.com_sinonfin_L-javaWebSha_tree_master]: https://gitee.com/sinonfin/L-javaWebSha/tree/master