尚硅谷智慧校园-SpringBoot最佳入手级项目

1.项目简介

智慧校园管理系统：主要是以年级、班级为单位，进行老师和学生信息记录和统计功能。项目采用前后端分离架构思想，前端采用HTML+CSS+VUE来实现页面效果展示，后端采用SpringBoot+MybatisPlus框架实现数据存储等服务。存储层使用高性能的MySQL，服务器使用SpringBoot内置的Tomcat9.x，项目构建工具使用Maven来管理jar包和项目构建。

2.项目搭建

1.创建项目

使用IDEA直接搭建SpringBoot项目

2.导入pom.xml依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><!-- 继承方式使用SpringBoot --><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.2.1.RELEASE</version><relativePath/> </parent><artifactId>zhxy</artifactId><groupId>com.atguigu</groupId><packaging>war</packaging><modelVersion>4.0.0</modelVersion><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!--单元测试启动器--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><!-- thymeleaf支持--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-thymeleaf</artifactId></dependency><!--  mybatis-plus--><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>3.3.1</version></dependency><!-- 简化POJO实体类开发 --><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><!--mysql--><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId></dependency><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-generator</artifactId><version>3.3.1</version></dependency><dependency><groupId>org.freemarker</groupId><artifactId>freemarker</artifactId><version>2.3.31</version></dependency><!--swagger--><dependency><groupId>io.springfox</groupId><artifactId>springfox-swagger2</artifactId><version>2.7.0</version></dependency><!--swagger ui--><dependency><groupId>io.springfox</groupId><artifactId>springfox-swagger-ui</artifactId><version>2.7.0</version></dependency><!--swagger2  增强版接口文档--><dependency><groupId>com.github.xiaoymin</groupId><artifactId>knife4j-spring-boot-starter</artifactId><version>2.0.4</version></dependency><!--开发者工具--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId><optional>true</optional></dependency><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.29</version></dependency><!-- JWT生成Token--><dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt</artifactId><version>0.7.0</version></dependency><dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.4</version></dependency></dependencies><build><plugins><!--spring boot maven插件 , 可以将项目运行依赖的jar包打到我们的项目中--><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

3.准备项目结构

java目录下
1. config : 项目的配置类
2. controller: 控制层
3. mapper : 持久层接口
4. pojo : 实体类
5. service: 服务层
6. util: 工具类包
7. ZhxyApplication : 启动类
resources目录下
1. mapper :持久层映射文件
2. public/upload:文件上传目录
3. static: 静态资源目录
4. application.yml :SpringBoot核心配置文件

4.准备application.yml文件

server:port: 9001
spring:#解决SpringBoot2.6.0与swagger冲突问题【原因是在springboot2.6.0中将SpringMVC 默认路径匹配策略从AntPathMatcher 更改为PathPatternParser，导致出错，解决办法是切换回原先的AntPathMatcher】mvc:pathmatch:matching-strategy: ant_path_matcher#配置数据源datasource:#配置数据源类型type: com.zaxxer.hikari.HikariDataSource#配置数据库连接属性driver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://localhost:3306/zhxy_db?characterEncoding=utf-8&serverTimezone=GMT%2B8&userSSL=falseusername: rootpassword: root#url: jdbc:mysql://r2czkq1vewxat78mnyg60oisurj5h4dp.mysql.qingcloud.link:3306/ssg_zhxy_db?characterEncoding=utf-8&serverTimezone=GMT%2B8&userSSL=false#username: shangguigu#password: shangguigu@QY123#mybatis-plus内置连接池hikari:connection-test-query: SELECT 1connection-timeout: 60000idle-timeout: 500000max-lifetime: 540000maximum-pool-size: 12minimum-idle: 10pool-name: GuliHikariPoolthymeleaf:#模板的模式，支持 HTML, XML TEXT JAVASCRIPTmode: HTML5#编码 可不用配置encoding: UTF-8#开发配置为false,避免修改模板还要重启服务器cache: false#配置模板路径，默认是templates，可以不用配置prefix: classpath:/static/jackson:date-format: yyyy-MM-dd HH:mm:sstime-zone: GMT+8servlet:#设置文件上传上限multipart:max-file-size: 10MBmax-request-size: 100MB
mybatis-plus:configuration:#添加日志支持log-impl: org.apache.ibatis.logging.stdout.StdOutImplmapper-locations: classpath*:/mapper/**/*.xml

5.准备分页插件配置类

package com.atguigu.zhxy.config;import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;@Configuration
@MapperScan("com.atguigu.zhxy.mapper")
public class MpConfig {/*** 分页插件*/@Beanpublic PaginationInterceptor paginationInterceptor() {PaginationInterceptor paginationInterceptor = new PaginationInterceptor();// paginationInterceptor.setLimit(你的最大单页限制数量，默认 500 条，小于 0 如 -1 不受限制);return paginationInterceptor;}}

6.准备Swagger2配置类

package com.atguigu.zhxy.config;import com.google.common.base.Predicates;
import io.swagger.annotations.ApiOperation;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.ParameterBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.schema.ModelRef;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.service.Parameter;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;import java.util.ArrayList;
import java.util.List;/*** Swagger2配置信息*/
@Configuration
@EnableSwagger2
public class Swagger2Config {@Beanpublic Docket webApiConfig(){//添加head参数startList<Parameter> pars = new ArrayList<>();ParameterBuilder tokenPar = new ParameterBuilder();tokenPar.name("userId").description("用户ID").defaultValue("1").modelRef(new ModelRef("string")).parameterType("header").required(false).build();pars.add(tokenPar.build());ParameterBuilder tmpPar = new ParameterBuilder();tmpPar.name("userTempId").description("临时用户ID").defaultValue("1").modelRef(new ModelRef("string")).parameterType("header").required(false).build();pars.add(tmpPar.build());//添加head参数endreturn new Docket(DocumentationType.SWAGGER_2).groupName("webApi").apiInfo(webApiInfo()).select()//可以测试请求头中：输入token.apis(RequestHandlerSelectors.withClassAnnotation(ApiOperation.class))//过滤掉admin路径下的所有页面//.paths(Predicates.and(PathSelectors.regex("/sms/.*")))//过滤掉所有error或error.*页面//.paths(Predicates.not(PathSelectors.regex("/error.*"))).build().globalOperationParameters(pars);}private ApiInfo webApiInfo(){return new ApiInfoBuilder().title("网站-API文档").description("本文档描述了网站微服务接口定义").version("1.0").contact(new Contact("atguigu", "http://atguigu.com", "512111559@qq.com")).build();}private ApiInfo adminApiInfo(){return new ApiInfoBuilder().title("后台管理系统-API文档").description("本文档描述了后台管理系统微服务接口定义").version("1.0").contact(new Contact("atguigu", "http://atguigu.com", "512111559@qq.com")).build();}}

7.准备util下的工具类

验证码图片工具类

package com.atguigu.zhxy.util;import java.awt.*;
import java.awt.image.BufferedImage;
import java.util.Random;/*** @project: ssm_sms* @description: 绘制验证码图片*/
public class CreateVerifiCodeImage {private static int WIDTH = 90;private static int HEIGHT = 35;private static int FONT_SIZE = 20; //字符大小private static char[] verifiCode; //验证码private static BufferedImage verifiCodeImage; //验证码图片/*** @description: 获取验证码图片* @param: no* @return: java.awt.image.BufferedImage*/public static BufferedImage getVerifiCodeImage() {verifiCodeImage = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_BGR);// create a imageGraphics graphics = verifiCodeImage.getGraphics();verifiCode = generateCheckCode();drawBackground(graphics);drawRands(graphics, verifiCode);graphics.dispose();return verifiCodeImage;}/*** @description: 获取验证码* @param: no* @return: char[]*/public static char[] getVerifiCode() {return verifiCode;}/*** @description: 随机生成验证码* @param: no* @return: char[]*/private static char[] generateCheckCode() {String chars = "0123456789abcdefghijklmnopqrstuvwxyz" + "ABCDEFGHIJKLMNOPQRSTUVWXYZ";char[] rands = new char[4];for (int i = 0; i < 4; i++) {int rand = (int) (Math.random() * (10 + 26 * 2));rands[i] = chars.charAt(rand);}return rands;}/*** @description: 绘制验证码* @param: g* @param: rands* @return: void*/private static void drawRands(Graphics g, char[] rands) {g.setFont(new Font("Console", Font.BOLD, FONT_SIZE));for (int i = 0; i < rands.length; i++) {g.setColor(getRandomColor());g.drawString("" + rands[i], i * FONT_SIZE + 10, 25);}}/*** @description: 绘制验证码图片背景* @param: g* @return: void*/private static void drawBackground(Graphics g) {g.setColor(Color.white);g.fillRect(0, 0, WIDTH, HEIGHT);// 绘制验证码干扰点for (int i = 0; i < 200; i++) {int x = (int) (Math.random() * WIDTH);int y = (int) (Math.random() * HEIGHT);g.setColor(getRandomColor());g.drawOval(x, y, 1, 1);}}/*** @description: 获取随机颜色* @param: no* @return: java.awt.Color*/private static Color getRandomColor() {Random ran = new Random();return new Color(ran.nextInt(220), ran.nextInt(220), ran.nextInt(220));}
}

token口令生成工具 JwtHelper

package com.atguigu.zhxy.util;import io.jsonwebtoken.*;
import org.springframework.util.StringUtils;import java.util.Date;public class JwtHelper {private static long tokenExpiration = 24*60*60*1000;private static String tokenSignKey = "123456";//生成token字符串public static String createToken(Long userId, Integer userType) {String token = Jwts.builder().setSubject("YYGH-USER").setExpiration(new Date(System.currentTimeMillis() + tokenExpiration)).claim("userId", userId)
//                .claim("userName", userName).claim("userType", userType).signWith(SignatureAlgorithm.HS512, tokenSignKey).compressWith(CompressionCodecs.GZIP).compact();return token;}//从token字符串获取useridpublic static Long getUserId(String token) {if(StringUtils.isEmpty(token)) return null;Jws<Claims> claimsJws = Jwts.parser().setSigningKey(tokenSignKey).parseClaimsJws(token);Claims claims = claimsJws.getBody();Integer userId = (Integer)claims.get("userId");return userId.longValue();}//从token字符串获取userTypepublic static Integer getUserType(String token) {if(StringUtils.isEmpty(token)) return null;Jws<Claims> claimsJws= Jwts.parser().setSigningKey(tokenSignKey).parseClaimsJws(token);Claims claims = claimsJws.getBody();return (Integer)(claims.get("userType"));}//从token字符串获取userNamepublic static String getUserName(String token) {if(StringUtils.isEmpty(token)) return "";Jws<Claims> claimsJws= Jwts.parser().setSigningKey(tokenSignKey).parseClaimsJws(token);Claims claims = claimsJws.getBody();return (String)claims.get("userName");}//判断token是否有效public static boolean isExpiration(String token){try {boolean isExpire = Jwts.parser().setSigningKey(tokenSignKey).parseClaimsJws(token).getBody().getExpiration().before(new Date());//没有过期，有效，返回falsereturn isExpire;}catch(Exception e) {//过期出现异常，返回truereturn true;}}/*** 刷新Token* @param token* @return*/public String refreshToken(String token) {String refreshedToken;try {final Claims claims = Jwts.parser().setSigningKey(tokenSignKey).parseClaimsJws(token).getBody();refreshedToken = JwtHelper.createToken(getUserId(token), getUserType(token));} catch (Exception e) {refreshedToken = null;}return refreshedToken;}public static void main(String[] args) {//        String token = JwtHelper.createToken(1L, "lucy");
//        System.out.println(token);
//        System.out.println(JwtHelper.getUserId(token));
//        System.out.println(JwtHelper.getUserName(token));}
}

解析request请求中的 token口令的工具AuthContextHolder

package com.atguigu.zhxy.util;import javax.servlet.http.HttpServletRequest;public class AuthContextHolder {//从请求头token获取useridpublic static Long getUserIdToken(HttpServletRequest request) {//从请求头tokenString token = request.getHeader("token");//调用工具类Long userId = JwtHelper.getUserId(token);return userId;}//从请求头token获取namepublic static String getUserName(HttpServletRequest request) {//从header获取tokenString token = request.getHeader("token");//jwt从token获取usernameString userName = JwtHelper.getUserName(token);return userName;}
}

MD5加密工具类

package com.atguigu.zhxy.util;import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;public final class MD5 {public static String encrypt(String strSrc) {try {char hexChars[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8','9', 'a', 'b', 'c', 'd', 'e', 'f' };byte[] bytes = strSrc.getBytes();MessageDigest md = MessageDigest.getInstance("MD5");md.update(bytes);bytes = md.digest();int j = bytes.length;char[] chars = new char[j * 2];int k = 0;for (int i = 0; i < bytes.length; i++) {byte b = bytes[i];chars[k++] = hexChars[b >>> 4 & 0xf];chars[k++] = hexChars[b & 0xf];}return new String(chars);} catch (NoSuchAlgorithmException e) {e.printStackTrace();throw new RuntimeException("MD5加密出错！！+" + e);}}}

JSON响应结果格式封装类

package com.atguigu.zhxy.util;import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;/*** 全局统一返回结果类**/
@Data
@ApiModel(value = "全局统一返回结果")
public class Result<T> {@ApiModelProperty(value = "返回码")private Integer code;@ApiModelProperty(value = "返回消息")private String message;@ApiModelProperty(value = "返回数据")private T data;public Result(){}// 返回数据protected static <T> Result<T> build(T data) {Result<T> result = new Result<T>();if (data != null)result.setData(data);return result;}public static <T> Result<T> build(T body, ResultCodeEnum resultCodeEnum) {Result<T> result = build(body);result.setCode(resultCodeEnum.getCode());result.setMessage(resultCodeEnum.getMessage());return result;}public static<T> Result<T> ok(){return Result.ok(null);}/*** 操作成功* @param data* @param <T>* @return*/public static<T> Result<T> ok(T data){Result<T> result = build(data);return build(data, ResultCodeEnum.SUCCESS);}public static<T> Result<T> fail(){return Result.fail(null);}/*** 操作失败* @param data* @param <T>* @return*/public static<T> Result<T> fail(T data){Result<T> result = build(data);return build(data, ResultCodeEnum.FAIL);}public Result<T> message(String msg){this.setMessage(msg);return this;}public Result<T> code(Integer code){this.setCode(code);return this;}public boolean isOk() {if(this.getCode().intValue() == ResultCodeEnum.SUCCESS.getCode().intValue()) {return true;}return false;}
}

响应结果类型码枚举

package com.atguigu.zhxy.util;import lombok.Getter;/*** 统一返回结果状态信息类**/
@Getter
public enum ResultCodeEnum {SUCCESS(200,"成功"),FAIL(201, "失败"),SERVICE_ERROR(2012, "服务异常"),ILLEGAL_REQUEST( 204, "非法请求"),PAY_RUN(205, "支付中"),ARGUMENT_VALID_ERROR(206, "参数校验错误"),LOGIN_ERROR(207, "用户名或密码错误"),LOGIN_AUTH(208, "未登陆"),PERMISSION(209, "没有权限"),SECKILL_NO_START(210, "秒杀还没开始"),SECKILL_RUN(211, "正在排队中"),SECKILL_NO_PAY_ORDER(212, "您有未支付的订单"),SECKILL_FINISH(213, "已售罄"),SECKILL_END(214, "秒杀已结束"),SECKILL_SUCCESS(215, "抢单成功"),SECKILL_FAIL(216, "抢单失败"),SECKILL_ILLEGAL(217, "请求不合法"),SECKILL_ORDER_SUCCESS(218, "下单成功"),COUPON_GET(220, "优惠券已经领取"),COUPON_LIMIT_GET(221, "优惠券已发放完毕"),//2022-02-22LOGIN_CODE(222,"长时间未操作,会话已失效,请刷新页面后重试!"),CODE_ERROR(223,"验证码错误!"),TOKEN_ERROR(224,"Token无效!");private Integer code;private String message;private ResultCodeEnum(Integer code, String message) {this.code = code;this.message = message;}
}

文件上传工具类

package com.atguigu.zhxy.util;import org.apache.commons.io.filefilter.SuffixFileFilter;
import org.springframework.web.multipart.MultipartFile;import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;/*** @project: zhxy* @description: 上传文件的工具类*/
public class UploadFile {//存储文件上传失败的错误信息private static Map<String, Object> error_result = new HashMap<>();//存储头像的上传结果信息private static Map<String, Object> upload_result = new HashMap<>();/*** @description: 效验所上传图片的大小及格式等信息...* @param: photo* @param: path* @return: java.util.Map<java.lang.String, java.lang.Object>*/private static Map<String, Object> uploadPhoto(MultipartFile photo, String path) {//限制头像大小(20M)int MAX_SIZE = 20971520;//获取图片的原始名称String orginalName = photo.getOriginalFilename();//如果保存文件的路径不存在,则创建该目录File filePath = new File(path);if (!filePath.exists()) {filePath.mkdirs();}//限制上传文件的大小if (photo.getSize() > MAX_SIZE) {error_result.put("success", false);error_result.put("msg", "上传的图片大小不能超过20M哟!");return error_result;}// 限制上传的文件类型String[] suffixs = new String[]{".png", ".PNG", ".jpg", ".JPG", ".jpeg", ".JPEG", ".gif", ".GIF", ".bmp", ".BMP"};SuffixFileFilter suffixFileFilter = new SuffixFileFilter(suffixs);if (!suffixFileFilter.accept(new File(path + orginalName))) {error_result.put("success", false);error_result.put("msg", "禁止上传此类型文件! 请上传图片哟!");return error_result;}return null;}/*** @description: (提取公共代码 : 提高代码的可重用性)获取头像的上传结果信息* @param: photo* @param: dirPaht* @param: portraitPath* @return: java.util.Map<java.lang.String, java.lang.Object>*/public static Map<String, Object> getUploadResult(MultipartFile photo, String dirPaht, String portraitPath) {if (!photo.isEmpty() && photo.getSize() > 0) {//获取图片的原始名称String orginalName = photo.getOriginalFilename();//上传图片,error_result:存储头像上传失败的错误信息Map<String, Object> error_result = UploadFile.uploadPhoto(photo, dirPaht);if (error_result != null) {return error_result;}//使用UUID重命名图片名称(uuid__原始图片名称)String newPhotoName = UUID.randomUUID() + "__" + orginalName;//将上传的文件保存到目标目录下try {photo.transferTo(new File(dirPaht + newPhotoName));upload_result.put("success", true);upload_result.put("portrait_path", portraitPath + newPhotoName);//将存储头像的项目路径返回给页面} catch (IOException e) {e.printStackTrace();upload_result.put("success", false);upload_result.put("msg", "上传文件失败! 服务器端发生异常!");return upload_result;}} else {upload_result.put("success", false);upload_result.put("msg", "头像上传失败! 未找到指定图片!");}return upload_result;}
}

8.基础代码实现

1.实体类

Admin

package com.atguigu.myzhxy.pojo;import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;@Data
@AllArgsConstructor
@NoArgsConstructor
@TableName("tb_admin")
public class Admin {@TableId(value = "id",type = IdType.AUTO)private Integer id;private String name;private char gender;private String password;private String email;private String telephone;private String address;private String portraitPath;// 头像的图片路径
}

Clazz

package com.atguigu.myzhxy.pojo;import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;/*** @project: sms* @description: 班级信息*/
@Data
@TableName("tb_clazz")
public class Clazz {//班级信息@TableId(value = "id",type = IdType.AUTO)private Integer id;             //班级Idprivate String name;            //班级名称private String number;          //班级人数private String introducation;   //班级介绍//班主任信息private String headmaster;      //班主任姓名private String telephone;       //班主任电话private String email;           //班主任邮箱//所属年级private String gradeName;      //班级所属年级}

Grade

package com.atguigu.myzhxy.pojo;import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;/*** @project: sms* @description: 年级及年级主任信息*/
@Data
@TableName("tb_grade")
public class Grade {//年级信息@TableId(value = "id",type = IdType.AUTO)private Integer id;             //年级IDprivate String name;            //年级名称private String introducation;   //年级介绍//年级主任信息private String manager;         //年级主任姓名private String email;           //年级主任邮箱private String telephone;       //年级主任电话}

Student

package com.atguigu.myzhxy.pojo;import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;/*** @project: sms* @description: 学生信息*/
@Data
@TableName("tb_student")
public class Student {@TableId(value = "id",type = IdType.AUTO)private Integer id;private String sno;private String name;private char gender = '男';//defaultprivate String password;private String email;private String telephone;private String address;private String introducation;private String portraitPath;//存储头像的项目路径private String clazzName;//班级名称}

Teacher

package com.atguigu.myzhxy.pojo;import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;/*** @project: sms* @description: 教师信息*/
@Data
@TableName("tb_teacher")
public class Teacher {@TableId(value = "id",type = IdType.AUTO)private Integer id;private String tno;private String name;private char gender;private String password;private String email;private String telephone;private String address;private String clazzName;private String portraitPath;//存储头像的项目路径//    @TableLogic
//    private Integer isDeleted;
}

LoginForm

package com.atguigu.myzhxy.pojo;import lombok.Data;/*** @project: ssm_sms* @description: 用户登录表单信息*/
@Data
public class LoginForm {private String username;private String password;private String verifiCode;private Integer userType;}

2.mapper

AdminMapper

package com.atguigu.myzhxy.mapper;import com.atguigu.myzhxy.pojo.Admin;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.springframework.stereotype.Repository;@Repository
public interface AdminMapper extends BaseMapper<Admin>  {}

ClazzMapper

package com.atguigu.myzhxy.mapper;import com.atguigu.myzhxy.pojo.Clazz;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.springframework.stereotype.Repository;@Repository
public interface ClazzMapper extends BaseMapper<Clazz> {}

GradeMapper

package com.atguigu.myzhxy.mapper;import com.atguigu.myzhxy.pojo.Grade;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.springframework.stereotype.Repository;@Repository
public interface GradeMapper extends BaseMapper<Grade> {}

StudentMapper

package com.atguigu.myzhxy.mapper;import com.atguigu.myzhxy.pojo.Student;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.springframework.stereotype.Repository;@Repository
public interface StudentMapper extends BaseMapper<Student> {}

TeacherMapper

package com.atguigu.myzhxy.mapper;import com.atguigu.myzhxy.pojo.Teacher;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.springframework.stereotype.Repository;@Repository
public interface TeacherMapper extends BaseMapper<Teacher> {}

3.Service

AdminService

package com.atguigu.myzhxy.service;import com.atguigu.myzhxy.pojo.Admin;
import com.baomidou.mybatisplus.extension.service.IService;public interface AdminService extends IService<Admin>  {}

AdminServiceImpl

package com.atguigu.myzhxy.service.impl;import com.atguigu.myzhxy.mapper.AdminMapper;
import com.atguigu.myzhxy.pojo.Admin;
import com.atguigu.myzhxy.service.AdminService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;@Service("adminServiceImpl")
@Transactional
public class AdminServiceImpl extends ServiceImpl<AdminMapper, Admin> implements AdminService {}

ClazzService

package com.atguigu.myzhxy.service;import com.atguigu.myzhxy.pojo.Clazz;
import com.baomidou.mybatisplus.extension.service.IService;public interface ClazzService extends IService<Clazz> {}

ClazzServiceImpl

package com.atguigu.myzhxy.service.impl;import com.atguigu.myzhxy.mapper.ClazzMapper;
import com.atguigu.myzhxy.pojo.Clazz;
import com.atguigu.myzhxy.service.ClazzService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;@Service("clazzServiceImpl")
@Transactional
public class ClazzServiceImpl extends ServiceImpl<ClazzMapper,Clazz> implements ClazzService {}

GradeService

package com.atguigu.myzhxy.service;import com.atguigu.myzhxy.pojo.Grade;
import com.baomidou.mybatisplus.extension.service.IService;public interface GradeService extends IService<Grade> {}

GradeServiceImpl

package com.atguigu.myzhxy.service.impl;import com.atguigu.myzhxy.mapper.GradeMapper;
import com.atguigu.myzhxy.pojo.Grade;
import com.atguigu.myzhxy.service.GradeService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;@Service("gradeServiceImpl")
@Transactional
public class GradeServiceImpl extends ServiceImpl<GradeMapper, Grade> implements GradeService {}

StudentService

package com.atguigu.myzhxy.service;import com.atguigu.myzhxy.pojo.Student;
import com.baomidou.mybatisplus.extension.service.IService;public interface StudentService extends IService<Student> {}

StudentServiceImpl

package com.atguigu.myzhxy.service.impl;import com.atguigu.myzhxy.mapper.StudentMapper;
import com.atguigu.myzhxy.pojo.Student;
import com.atguigu.myzhxy.service.StudentService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;@Service("studentServiceImpl")
@Transactional
public class StudentServiceImpl extends ServiceImpl<StudentMapper, Student> implements StudentService {}

TeacherService

package com.atguigu.myzhxy.service;import com.atguigu.myzhxy.pojo.Teacher;
import com.baomidou.mybatisplus.extension.service.IService;public interface TeacherService extends IService<Teacher> {}

TeacherServiceImpl

package com.atguigu.myzhxy.service.impl;import com.atguigu.myzhxy.mapper.TeacherMapper;
import com.atguigu.myzhxy.pojo.Teacher;
import com.atguigu.myzhxy.service.TeacherService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;@Service("teacherServiceImpl")
@Transactional
public class TeacherServiceImpl extends ServiceImpl<TeacherMapper, Teacher> implements TeacherService {}

4.controller

AdminController

package com.atguigu.myzhxy.controller;import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RequestMapping("/sms/adminController")
@RestController
public class AdminController {}

ClazzController

package com.atguigu.myzhxy.controller;import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RequestMapping("/sms/clazzController")
@RestController
public class ClazzController {}

GradeController

package com.atguigu.myzhxy.controller;import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RequestMapping("/sms/gradeController")
@RestController
public class GradeController {}

StudentController

package com.atguigu.myzhxy.controller;import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RequestMapping("/sms/studentController")
@RestController
public class StudentController {}

TeacherController

package com.atguigu.myzhxy.controller;import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RequestMapping("/sms/teacherController")
@RestController
public class TeacherController {}

SystemController

package com.atguigu.myzhxy.controller;import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RequestMapping("/sms/system")
@RestController
public class SystemController {}

2.登录功能实现

1.获取验证码

在SystemController中创建方法

 @GetMapping("/getVerifiCodeImage")public void getVerifiCodeImage(HttpServletRequest request, HttpServletResponse response){//获取图片BufferedImage verifiCodeImage = CreateVerifiCodeImage.getVerifiCodeImage();//获取图片上的验证码String verifiCode = new String(CreateVerifiCodeImage.getVerifiCode());//将验证码文本放入sessionHttpSession session = request.getSession();session.setAttribute("verifiCode",verifiCode);//将验证码响应给浏览器try {ImageIO.write(verifiCodeImage,"JPEG",response.getOutputStream());} catch (IOException e) {throw new RuntimeException(e);}}

2.登陆验证

在SystemController中注入三个Service对象，然后创建方法

 /*** 登录* @param loginForm* @param request* @return*/@PostMapping("/login")public Result login(@RequestBody LoginForm loginForm,HttpServletRequest request){//验证码校验HttpSession session = request.getSession();String sessionVerifiCode = (String)session.getAttribute("verifiCode");String loginVerifiCode = loginForm.getVerifiCode();if("".equals(sessionVerifiCode)||null == sessionVerifiCode){return Result.fail().message("验证码失效，请刷新重试！");}if(!sessionVerifiCode.equalsIgnoreCase(loginVerifiCode)){return Result.fail().message("验证码有误，请小心输入后重试！");}//从session中移除验证码session.removeAttribute("verifiCode");//分用户类型校验//准备map用户存放响应数据Map<String,Object> map = new LinkedHashMap<>();switch (loginForm.getUserType()){case 1:try {Admin admin = adminService.login(loginForm);if(null!=admin){//用户类型和用户id转换成一个密文，以token的名称向客户端反馈String token = "";map.put("token",JwtHelper.createToken(admin.getId().longValue(),1));}else{throw new RuntimeException("用户名或密码有误");}return Result.ok(map);} catch (RuntimeException e) {e.printStackTrace();return Result.fail().message(e.getMessage());}case 2:try {Student student = studentService.login(loginForm);if(null!=student){//用户类型和用户id转换成一个密文，以token的名称向客户端反馈String token = "";map.put("token",JwtHelper.createToken(student.getId().longValue(),2));}else{throw new RuntimeException("用户名或密码有误");}return Result.ok(map);} catch (RuntimeException e) {e.printStackTrace();return Result.fail().message(e.getMessage());}case 3:try {Teacher teacher = teacherService.login(loginForm);if(null!=teacher){//用户类型和用户id转换成一个密文，以token的名称向客户端反馈String token = "";map.put("token",JwtHelper.createToken(teacher.getId().longValue(),3));}else{throw new RuntimeException("用户名或密码有误");}return Result.ok(map);} catch (RuntimeException e) {e.printStackTrace();return Result.fail().message(e.getMessage());}}return Result.fail().message("查无此用户");}

实现login（）方法

    @Overridepublic Teacher login(LoginForm loginForm) {QueryWrapper<Teacher> queryWrapper = new QueryWrapper<>();queryWrapper.eq("name",loginForm.getUsername());queryWrapper.eq("password", MD5.encrypt(loginForm.getPassword()));Teacher teacher = baseMapper.selectOne(queryWrapper);return teacher;}

  @Overridepublic Student login(LoginForm loginForm) {QueryWrapper<Student> queryWrapper = new QueryWrapper<>();queryWrapper.eq("name",loginForm.getUsername());queryWrapper.eq("password", MD5.encrypt(loginForm.getPassword()));Student student = baseMapper.selectOne(queryWrapper);return student;}

    @Overridepublic Admin login(LoginForm loginForm) {QueryWrapper<Admin> queryWrapper = new QueryWrapper<>();queryWrapper.eq("name",loginForm.getUsername());queryWrapper.eq("password", MD5.encrypt(loginForm.getPassword()));Admin admin = baseMapper.selectOne(queryWrapper);return admin;}

3.跳转首页

当验证通过后,前端会产生第二个请求,用以获取用户的类型,然后根据用户的类型来展现不同的页面,所以后端要有一个根据token解析用户类型并做出结果响应的控制层。

在SystemController中创建方法

@GetMapping("/getInfo")public Result getInfoByToken(@RequestHeader("token") String token){boolean expiration = JwtHelper.isExpiration(token);if (expiration) {return Result.build(null,ResultCodeEnum.TOKEN_ERROR);}//从token中解析出 用户id 和用户的类型Long userId = JwtHelper.getUserId(token);Integer userType = JwtHelper.getUserType(token);Map<String,Object> map =new LinkedHashMap<>();switch (userType){case 1:Admin admin =adminService.getAdminById(userId);map.put("userType",1);map.put("user",admin);break;case 2:Student student =studentService.getStudentById(userId);map.put("userType",2);map.put("user",student);break;case 3:Teacher teacher= teacherService.getTeacherById(userId);map.put("userType",3);map.put("user",teacher);break;}return Result.ok(map);}

实现方法

    @Overridepublic Admin getAdminById(Long userId) {QueryWrapper<Admin> queryWrapper = new QueryWrapper();queryWrapper.eq("id",userId);Admin admin = baseMapper.selectOne(queryWrapper);return admin;}

   @Overridepublic Student getStudentById(Long userId) {QueryWrapper<Student> queryWrapper = new QueryWrapper();queryWrapper.eq("id",userId);Student student = baseMapper.selectOne(queryWrapper);return student;}

@Overridepublic Teacher getTeacherById(Long userId) {QueryWrapper<Teacher> queryWrapper = new QueryWrapper();queryWrapper.eq("id",userId);Teacher teacher = baseMapper.selectOne(queryWrapper);return teacher;}

3.年级管理功能实现

1.带条件分页查询

在GradeController中注入gradeService对象，然后创建方法

@Autowiredprivate GradeService gradeService;@GetMapping("/getGrades/{pageNo}/{pageSize}")public Result getGrades(@PathVariable("pageNo") Integer pageNo,@PathVariable("pageSize") Integer pageSize,String gradeName){//分页 带条件查询Page<Grade> page = new Page<>(pageNo,pageSize);//通过服务层IPage<Grade> pageRs =  gradeService.getGradeByOpr(page,gradeName);return Result.ok(pageRs);}

在GradeServiceImpl中实现

   @Overridepublic IPage<Grade> getGradeByOpr(Page<Grade> pageParam, String gradeName) {QueryWrapper<Grade> queryWrapper = new QueryWrapper();if(!StringUtils.isEmpty(gradeName)){queryWrapper.like("name",gradeName);}queryWrapper.orderByDesc("id");Page<Grade> page = baseMapper.selectPage(pageParam, queryWrapper);return page;}

2.年级修改或添加

 /*** 年级添加或修改* @param grade* @return*/@PostMapping("/saveOrUpdateGrade")public Result saveOrUpdateGrade(@RequestBody Grade grade){//接收参数//调用服务层方法完成增减或修改gradeService.saveOrUpdate(grade);return Result.ok();}

因为IService中已经存在了saveOrUpdate()方法所以不用再次实现方法。

3.年级删除功能

/*** 年级删除功能* @param ids* @return*/@DeleteMapping("/deleteGrade")public Result deleteGrade(@RequestBody List<Integer> ids){gradeService.removeByIds(ids);return Result.ok();}

因为IService中已经存在了removeByIds()方法所以不用再次实现方法

4.班级管理功能实现

1 回显搜索条件中的年级选项

@Api(tags = "年级控制器")
@RestController
@RequestMapping("/sms/gradeController")
public class GradeController {@Autowiredprivate GradeService gradeService;@ApiOperation("获取所有Grade信息")@GetMapping("/getGrades")public Result getGrades(){List<Grade> grades = gradeService.getGrades();return Result.ok(grades);}
}

在GradeServiceImpl中实现方法

  @Overridepublic List<Grade> getGrades() {return baseMapper.selectList(null);}

2.带条件分页查询

@RequestMapping("/sms/clazzController")
@RestController
public class ClazzController {@Autowiredprivate ClazzService clazzService;@ApiOperation("分页带条件查询班级信息")@GetMapping("/getClazzsByOpr/{pageNo}/{pageSize}")public Result getClazzByOpr(@ApiParam("分页查询页码数") @PathVariable("pageNo") Integer pageNo,@ApiParam("分页查询页大小")@PathVariable("pageSize") Integer pageSize,@ApiParam("分页查询条件") Clazz clazz){Page<Clazz> page = new Page<>(pageNo,pageSize);IPage<Clazz> ipage = clazzService.getClazzByOpr(page,clazz);return Result.ok(ipage);}
}

实现方法getClazzByOpr()

   @Overridepublic IPage<Clazz> getClazzByOpr(Page<Clazz> pageParam, Clazz clazz) {QueryWrapper<Clazz> queryWrapper = new QueryWrapper();String gradeName = clazz.getGradeName();if(!StringUtils.isEmpty(gradeName)){queryWrapper.like("grade_name",gradeName);}String name = clazz.getName();if(!StringUtils.isEmpty(name)){queryWrapper.like("name",name);}//根据id进行排序queryWrapper.orderByDesc("id");Page<Clazz> clazzPage = baseMapper.selectPage(pageParam, queryWrapper);return clazzPage;}

3.班级增加或修改

  @ApiOperation("增加或修改班级信息")@PostMapping("/saveOrUpdateClazz")public Result saveOrUpdateClazz(@ApiParam("JSON格式的班级信息")@RequestBody Clazz clazz){clazzService.saveOrUpdate(clazz);return Result.ok();}

因为IService中已经存在了saveOrUpdate()方法所以不用再次实现方法。

4.班级删除功能

  @ApiOperation("删除单个或多个班级信息")@DeleteMapping("/deleteClazz")public Result deleteClazz(@RequestBody List<Integer> ids){clazzService.removeByIds(ids);return Result.ok();}

因为IService中已经存在了removeByIds()方法所以不用再次实现方法。

5.学生管理功能实现

1. 回显搜索条件中的班级选项

在ClazzController创建方法

   @ApiOperation("查询所有班级信息")@GetMapping("/getClazzs")public Result getClazz(){List<Clazz> clazzes = clazzService.getClazz();return Result.ok(clazzes);}

实现方法

    @Overridepublic List<Clazz> getClazz() {return baseMapper.selectList(null);}

2.带条件分页查询

@RequestMapping("/sms/studentController")
@RestController
public class StudentController {@Autowiredprivate StudentService studentService;@ApiOperation("分页带条件查询学生信息")@GetMapping("/getStudentByOpr/{pageNo}/{pageSize}")public Result getStudentByOpr(@ApiParam("分页查询页码数") @PathVariable("pageNo")Integer pageNo,@ApiParam("分页查询页大小")@PathVariable("pageSize") Integer pageSize,@ApiParam("查询条件") Student student){//分页信息封装Page<Student> pageParam = new Page(pageNo,pageSize);//进行查询IPage<Student> studentPage =  studentService.getStudentByOpr(pageParam,student);return Result.ok(studentPage);}
}

在StudentServiceImpl中实现getStudentByOpr()方法

    @Overridepublic IPage<Student> getStudentByOpr(Page<Student> pageParam, Student student) {QueryWrapper<Student> studentQueryWrapper = new QueryWrapper();if(!StringUtils.isEmpty(student.getName())){studentQueryWrapper.like("name",student.getName());}if(!StringUtils.isEmpty(student.getClazzName())){studentQueryWrapper.like("clazz_name",student.getClazzName());}studentQueryWrapper.orderByDesc("id");Page<Student> studentPage = baseMapper.selectPage(pageParam,studentQueryWrapper);return studentPage;}

3.学生管理头像上传

    @ApiOperation("文件上传统一入口")@PostMapping("/headerImgUpload")public Result headerImgUpload(@ApiParam("头像文件") @RequestPart MultipartFile multipartFile,HttpServletRequest request){String uuid = UUID.randomUUID().toString().replace("-", "").toLowerCase();String originalFilename = multipartFile.getOriginalFilename();int i = originalFilename.lastIndexOf(".");String newFileName = uuid+originalFilename.substring(i);//保存文件 将文件发送到第三方/独立的服务器String portraitPath = "E:/桌面/zhxy/target/classes/public/upload".concat(newFileName);try {multipartFile.transferTo(new File(portraitPath));} catch (IOException e) {e.printStackTrace();}//响应图片路径String path = "upload/".concat(newFileName);return Result.ok(path);}

4.学生增加或修改

  @ApiOperation("保存或者修改学生信息")@PostMapping("/addOrUpdateStudent")public Result addOrUpdateStudent(@ApiParam("要保存或修改的学生JSON")@RequestBody Student student){Integer id = student.getId();if(null == id||0 == id){student.setPassword(MD5.encrypt(student.getPassword()));}studentService.saveOrUpdate(student);return Result.ok();}

因为IService中已经存在了saveOrUpdate()方法所以不用再次实现方法。

5.学生删除功能

   @ApiOperation("删除单个或多个学生信息")@DeleteMapping("/delStudentById")public Result delStudentById(@ApiParam("要删除的学生的编号JSON集合")@RequestBody List<Integer> ids){studentService.removeByIds(ids);return Result.ok();}

因为IService中已经存在了removeByI ds()方法所以不用再次实现方法。

6.管理员功能实现

1.带条件分页查询

@RequestMapping("/sms/adminController")
@RestController
public class AdminController {@Autowiredprivate AdminService adminService;@ApiOperation("分页带条件查询管理员信息")@GetMapping("/getAllAdmin/{pageNo}/{pageSize}")public Result getAllAdmin(@ApiParam("页码数") @PathVariable("pageNo") Integer pageNo,@ApiParam("页大小") @PathVariable("pageSize") Integer pageSize,@ApiParam("管理员名字") String adminName){Page<Admin> pageParam = new Page<Admin>(pageNo,pageSize);IPage<Admin> iPage = adminService.getAdminByOpr(pageParam,adminName);return Result.ok(iPage);}
}

实现方法getAdminByOpr()

    @Overridepublic IPage<Admin> getAdminByOpr(Page<Admin> pageParam, String adminName) {QueryWrapper<Admin> queryWrapper = new QueryWrapper();if (!StringUtils.isEmpty(adminName)) {queryWrapper.like("name",adminName);}queryWrapper.orderByDesc("id");Page<Admin> page = baseMapper.selectPage(pageParam,queryWrapper);return page;}

2.管理员增加或修改

   @ApiOperation("增加或修改管理员信息")@PostMapping("/saveOrUpdateAdmin")public Result saveOrUpdateAdmin(@ApiParam("JSON格式Admin对象") @RequestBody Admin admin){Integer id = admin.getId();if(id == null||0 ==id){admin.setPassword(MD5.encrypt(admin.getPassword()));}adminService.saveOrUpdate(admin);return Result.ok();}

3.管理员删除功能

    @ApiOperation("删除单个或多个管理员信息")@DeleteMapping("/deleteAdmin")public Result deleteAdmin(@ApiParam("要删除的管理员的多个ID的JSON集合") @RequestBody List<Integer> ids){adminService.removeByIds(ids);return Result.ok();}

7.教师功能实现

1.带分页的查询

  @Autowiredprivate TeacherService teacherService;@ApiOperation("分页获取教师信息带条件")@GetMapping("/getTeacher/{pageNo}/{pageSize}")public Result getTeacher(@ApiParam("分页页码数") @PathVariable("pageNo") Integer pageNo,@ApiParam("分页大小") @PathVariable("pageSize") Integer pageSize,Teacher teacher){Page<Teacher> pageParam = new Page<>(pageNo,pageSize);IPage<Teacher> page = teacherService.getTeacherByOpr(pageParam,teacher);return Result.ok(page);}

2.教师增加或修改

    @ApiOperation("添加或修改教师信息")@PostMapping("/saveOrUpdateTeacher")public Result saveOrUpdateTeacher(@ApiParam("保存或修改的JSON格式对象") @RequestBody Teacher teacher){//如果新增要对密码进行加密if(teacher.getId()==null||teacher.getId()==0){teacher.setPassword(MD5.encrypt(teacher.getPassword()));}teacherService.saveOrUpdate(teacher);return Result.ok();}

3.教师删除功能

    @ApiOperation("删除单个或多个教师信息")@DeleteMapping("/deleteTeacher")public Result deleteTeacher(@ApiParam("要删除的教师信息的id的JSON集合") @RequestBody List<Integer> ids){teacherService.removeByIds(ids);return Result.ok();}

8.个人信息功能实现

1.修改密码

在SystemController中创建方法

    @ApiOperation("更新用户密码的处理器")@PostMapping("/updatePwd/{oldPwd}/{newPwd}")public Result updatePwd(@RequestHeader("token") String token,@PathVariable("oldPwd") String oldPwd,@PathVariable("newPwd") String newPwd){boolean expiration = JwtHelper.isExpiration(token);if(expiration){//token过期return Result.fail().message("token失效，请重新登录后修改密码");}//获取用户id和用户类型Integer userType = JwtHelper.getUserType(token);Long userId = JwtHelper.getUserId(token);oldPwd = MD5.encrypt(oldPwd);newPwd = MD5.encrypt(newPwd);switch (userType){case 1:QueryWrapper<Admin> queryWrapper1 = new QueryWrapper();queryWrapper1.eq("id",userId.intValue());queryWrapper1.eq("password", oldPwd);Admin admin = adminService.getOne(queryWrapper1);if(admin!=null){admin.setPassword(newPwd);adminService.saveOrUpdate(admin);}else{return Result.fail().message("原密码有误！");}break;case 2:QueryWrapper<Student> queryWrapper2 = new QueryWrapper();queryWrapper2.eq("id",userId.intValue());queryWrapper2.eq("password", oldPwd);Student student = studentService.getOne(queryWrapper2);if(student!=null){student.setPassword(newPwd);studentService.saveOrUpdate(student);}else{return Result.fail().message("原密码有误！");}break;case 3:QueryWrapper<Teacher> queryWrapper3 = new QueryWrapper();queryWrapper3.eq("id",userId.intValue());queryWrapper3.eq("password", oldPwd);Teacher teacher = teacherService.getOne(queryWrapper3;if(teacher!=null){teacher.setPassword(newPwd);teacherService.saveOrUpdate(teacher);}else{return Result.fail().message("原密码有误！");}break;}return Result.ok();}