Spring Boot设置并使用缓存的步骤

@MapperScan(basePackages = "com.youngpain.cache.mapper")
@SpringBootApplication
@EnableCaching

spring:
 datasource:
  url: jdbc:mysql://localhost:3306/mybatis_database
  username: root
  password: 1741248769
  driver-class-name: com.mysql.jdbc.Driver
 redis:
  host: 39.108.114.57
#开启驼峰命名法
mybatis:
 configuration:
  map-underscore-to-camel-case: true
logging:
 level:
  com.youngpain.cache.mapper: debug

/**
 * 部门表的增删改查操作
 */
public interface DepartmentMapper {
  @Insert("insert into department(id,depart_name,depart_build) values(#{id},#{depart_name},#{depart_build})")
  void insertDepartment(Department department);
  @Delete("delete from department where id=#{id}")
  void deleteDepartment(Integer id);
  @Update("update department set depart_name=#{departName},depart_build=#{departBuild} where id=#{id}")
  void updateDepartment(Department department);
  @Select("select * from department where id=#{id}")
  Department getDepartmentById(Integer id);
}

@Service
@CacheConfig(cacheNames = {"departs"})
public class DepartmentService {
  @Autowired
  DepartmentMapper departmentMapper;
  @Cacheable(key = "#a0.id")
  public void insertDepartment(Department department) {
    departmentMapper.insertDepartment(department);
  }
  @CacheEvict(key = "#p0")
  public void deleteDepartment(Integer id) {
    departmentMapper.deleteDepartment(id);
  }
  @CachePut(key = "#a0.id")
  public Department updateDepartment(Department department) {
    departmentMapper.updateDepartment(department);
    return department;
  }
  @Cacheable(key = "#id", condition = "#p0>=1")
  public Department getDepartmentById(Integer id) {
    return departmentMapper.getDepartmentById(id);
  }
}

@Controller
public class DepartmentController {
  @Autowired
  DepartmentService departmentService;
  @GetMapping("/index")
  public String index() {
    return "index";
  }
  @GetMapping("/deleteDepart/{id}")
  public String deleteDepart(@PathVariable("id") Integer id, Model model) {
    model.addAttribute("condition", "delete");
    Department delete = departmentService.getDepartmentById(id);
    model.addAttribute("department", delete);
    departmentService.deleteDepartment(id);
    return "success";
  }
  @PostMapping("/updateDepart")
  public String updateDepart(Department department, Model model) {
    model.addAttribute("condition", "update");
    Department update = departmentService.updateDepartment(department);
    model.addAttribute("department", update);
    return "success";
  }
  @GetMapping("/getDepart/{id}")
  public String getDepartmentById(@PathVariable("id") Integer id, Model model) {
    model.addAttribute("condition", "delete");
    Department get = departmentService.getDepartmentById(id);
    model.addAttribute("department", get);
    return "success";
  }
}