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

<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">
	
    <parent>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-parentartifactId>
        <version>2.2.1.RELEASEversion>
        <relativePath/> 
    parent>

    <artifactId>zhxyartifactId>
    <groupId>com.atguigugroupId>
    <packaging>warpackaging>
    <modelVersion>4.0.0modelVersion>

    <dependencies>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starterartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>
        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-thymeleafartifactId>
        dependency>

        
        <dependency>
            <groupId>com.baomidougroupId>
            <artifactId>mybatis-plus-boot-starterartifactId>
            <version>3.3.1version>
        dependency>

        
        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <optional>trueoptional>
        dependency>

        
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
        dependency>

        <dependency>
            <groupId>com.baomidougroupId>
            <artifactId>mybatis-plus-generatorartifactId>
            <version>3.3.1version>
        dependency>
        <dependency>
            <groupId>org.freemarkergroupId>
            <artifactId>freemarkerartifactId>
            <version>2.3.31version>
        dependency>

        
        <dependency>
            <groupId>io.springfoxgroupId>
            <artifactId>springfox-swagger2artifactId>
            <version>2.7.0version>
        dependency>
        
        <dependency>
            <groupId>io.springfoxgroupId>
            <artifactId>springfox-swagger-uiartifactId>
            <version>2.7.0version>
        dependency>
        
        <dependency>
            <groupId>com.github.xiaoymingroupId>
            <artifactId>knife4j-spring-boot-starterartifactId>
            <version>2.0.4version>
        dependency>


        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-devtoolsartifactId>
            <optional>trueoptional>
        dependency>

        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>fastjsonartifactId>
            <version>1.2.29version>
        dependency>

        
        <dependency>
            <groupId>io.jsonwebtokengroupId>
            <artifactId>jjwtartifactId>
            <version>0.7.0version>
        dependency>

        <dependency>
            <groupId>commons-fileuploadgroupId>
            <artifactId>commons-fileuploadartifactId>
            <version>1.4version>
        dependency>

    dependencies>

    <build>
        <plugins>
            
            <plugin>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-maven-pluginartifactId>
            plugin>
        plugins>
    build>

project>

3.准备项目结构

1. 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

2. 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.Driver
    url: jdbc:mysql://localhost:3306/zhxy_db?characterEncoding=utf-8&serverTimezone=GMT%2B8&userSSL=false
    username: root
    password: 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 1
      connection-timeout: 60000
      idle-timeout: 500000
      max-lifetime: 540000
      maximum-pool-size: 12
      minimum-idle: 10
      pool-name: GuliHikariPool
  thymeleaf:
    #模板的模式，支持 HTML, XML TEXT JAVASCRIPT
    mode: 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:ss
    time-zone: GMT+8
  servlet:
    #设置文件上传上限
    multipart:
      max-file-size: 10MB
      max-request-size: 100MB
mybatis-plus:
  configuration:
    #添加日志支持
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
  mapper-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
     */
    @Bean
    public 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 {

    @Bean
    public Docket webApiConfig(){

        //添加head参数start
        List<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end

        return 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", "[email protected]"))
                .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", "[email protected]"))
                .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 image
          Graphics 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userid
      public 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userType
      public 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userName
      public 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false
              return isExpire;
          }catch(Exception e) {
              //过期出现异常，返回true
              return 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userid
      public static Long getUserIdToken(HttpServletRequest request) {
          //从请求头token
          String token = request.getHeader("token");
          //调用工具类
          Long userId = JwtHelper.getUserId(token);
          return userId;
      }
  
      //从请求头token获取name
      public static String getUserName(HttpServletRequest request) {
          //从header获取token
          String token = request.getHeader("token");
          //jwt从token获取username
          String 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 
       * @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 
       * @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"),
      //2022-02-22
      LOGIN_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
       */
      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
       */
      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Id
      private 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ID
      private 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';//default
      private 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session
        HttpSession 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

    @Override
    public 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;
    }

  @Override
    public 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;
    }

    @Override
    public 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

    @Override
    public Admin getAdminById(Long userId) {
        QueryWrapper<Admin> queryWrapper = new QueryWrapper();
        queryWrapper.eq("id",userId);

        Admin admin = baseMapper.selectOne(queryWrapper);

        return admin;
    }

   @Override
    public Student getStudentById(Long userId) {
        QueryWrapper<Student> queryWrapper = new QueryWrapper();
        queryWrapper.eq("id",userId);

        Student student = baseMapper.selectOne(queryWrapper);

        return student;
    }

    @Override
    public 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

    @Autowired
    private 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

   @Override
    public 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 {

    @Autowired
    private 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

  @Override
    public List<Grade> getGrades() {

        return baseMapper.selectList(null);

    }

2.带条件分页查询

@RequestMapping("/sms/clazzController")
@RestController
public class ClazzController {
    @Autowired
    private 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()

   @Override
    public 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

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

2.带条件分页查询

@RequestMapping("/sms/studentController")
@RestController
public class StudentController {
    @Autowired
    private 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

    @Override
    public 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 {
    @Autowired
    private 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()

    @Override
    public 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

  @Autowired
    private 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();
    }