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1、软件开发整体介绍

软件开发流程

角色分工

软件环境

2、外卖项目介绍

项目介绍

技术选型

功能架构

角色

3、环境搭建

数据库环境搭建

创建数据库

执行SQL脚本

数据表

maven项目搭建

添加依赖:

    <parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.4.5</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.ka</groupId><artifactId>reggie</artifactId><version>1.0-SNAPSHOT</version><properties><java.version>1.8</java.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><scope>compile</scope></dependency><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>3.4.2</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.20</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.76</version></dependency><dependency><groupId>commons-lang</groupId><artifactId>commons-lang</artifactId><version>2.6</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><scope>runtime</scope></dependency><dependency><groupId>com.alibaba</groupId><artifactId>druid-spring-boot-starter</artifactId><version>1.1.23</version></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><version>2.4.5</version></plugin></plugins></build>

application.yml

server:port: 8080
spring:application:#应用名称name: reggie_take_outdatasource:druid:driver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://localhost:3306/reggie?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&useSSL=false&allowPublicKeyRetrieval=trueusername: rootpassword: 1234
mybatis-plus:configuration:#address_book->AddressBook#在映射实体或者属性时，将数据库中表名和字段名中的下划线去掉，按照驼峰命名法映射map-underscore-to-camel-case: truelog-impl: org.apache.ibatis.logging.stdout.StdOutImplglobal-config:db-config:id-type: ASSIGN_ID

配置application启动类

@Slf4j
@SpringBootApplication
public class ReggieApplication {public static void main(String[] args) {SpringApplication.run(ReggieApplication.class,args);log.info("项目启动成功！！！");}
}

把前端的静态资源放在resource目录

设置静态资源映射

@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {@Overrideprotected void addResourceHandlers(ResourceHandlerRegistry registry) {log.info("开始静态资源映射");registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");}
}

启动项目，访问http://localhost:8080/backend/index.html

4、后台登录功能开发

需求分析

• 登录页面展示(http://localhost:8080/backend/page/login/login.html)
  

• 查看登录请求信息
  

• 数据模型（employee表）
  

代码开发

• 创建实体类Employee，和employee表进行映射

@Data
public class Employee implements Serializable {private static final long serialVersionUID = 1L;private Long id;private String username;private String name;private String password;private String phone;private String sex;private String idNumber;//身份证号码private Integer status;private LocalDateTime createTime;private LocalDateTime updateTime;@TableField(fill = FieldFill.INSERT)private Long createUser;@TableField(fill = FieldFill.INSERT_UPDATE)private Long updateUser;}

• 创建Controller，Service，Mapper

EmployeeMapper

@Mapper
public interface EmployeeMapper extends BaseMapper<Employee> {
}

EmployeeService

public interface EmployeeService extends IService<Employee> {
}

EmployeeServiceImpl

@Service
public class EmployeeServiceImpl extends ServiceImpl<EmployeeMapper, Employee> implements EmployeeService {
}

EmployeeController

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {@Autowiredprivate EmployeeServiceImpl employeeService;
}

• 导入返回结果类R
  • 此类是一个通用结果类，服务端响应的所有结果最终都会包装成此种类型返回给前端页面

@Data
public class R<T> {private Integer code; //编码：1成功，0和其它数字为失败private String msg; //错误信息private T data; //数据private Map map = new HashMap(); //动态数据public static <T> R<T> success(T object) {R<T> r = new R<T>();r.data = object;r.code = 1;return r;}public static <T> R<T> error(String msg) {R r = new R();r.msg = msg;r.code = 0;return r;}public R<T> add(String key, Object value) {this.map.put(key, value);return this;}}

• 在Controller中创建登录方法
  

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {@Autowiredprivate EmployeeServiceImpl employeeService;@PostMapping("/login")public R<Employee> logib(HttpServletRequest request, @RequestBody Employee employee) {//1、将页面提交的密码进行md5加密处理String password = employee.getPassword();password = DigestUtils.md5DigestAsHex(password.getBytes());//2、根据页面提交的用户名来查数据库LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();queryWrapper.eq(Employee::getUsername, employee.getUsername());Employee emp = employeeService.getOne(queryWrapper);//3、如果没有查询到则返回失败结果if (emp == null) {return R.error("登录失败");}//4、比对密码，如果不一致则返回失败结果if (!emp.getPassword().equals(password)) {return R.error("密码错误");}//5、查看员工状态，如果已禁用状态，则返回员工已禁用结果if (emp.getStatus() == 0) {return R.error("账号已禁用");}//6、登录成功，将用户id存入Session并返回成功结果request.getSession().setAttribute("employee", emp.getId());return R.success(emp);}
}

5、后台退出功能开发

需求分析

代码实现

在Controller中创建退出方法

    //员工退出@PostMapping("/logout")public R<String> logout(HttpServletRequest request){//清理Session中保存的当前员工登录的idrequest.getSession().removeAttribute("employee");return R.success("退出成功");}