java Spring CrudePository不工作保存和删除操作

Question

在春季，crudepository findAll（）操作可以很好地从数据库中获取数据，但在保存、更新和；删除它不起作用

员工服务。java

 @Service
    public class EmployeeService {

        @Autowired
        private EmployeeRepo employeeRepoI;

        @Transactional
        public List<Employee> getAllEmployee() {
            return (List<Employee>) employeeRepoI.findAll();
        }

        @Transactional
        public Employee getEmployee(int id) {
            return (Employee) employeeRepoI.findOne(id);
        }

        @Transactional
        public Employee addEmployee(Employee employee) {
            return (Employee) employeeRepoI.save(employee);
        }

        @Transactional
        public Employee updateEmployee(Employee employee) {
            return (Employee) employeeRepoI.save(employee);

        }

        @Transactional
        public void deleteEmployee(int id) {
             employeeRepoI.delete(id);
        }

    }

雇员。java

@Repository
public interface EmployeeRepo<T, ID extends Serializable> extends CrudRepository<Employee, Long> {

    List<Employee> findAll();


}

Answer 1

正如谢尔盖所指出的，你的EmployeeRepo有一个错误的定义

试试这个

@Repository
public interface EmployeeRepo extends CrudRepository<Employee, Long> {
    List<Employee> findAll();
}

另外，您的deleteEmployee()方法采用int，而它应该采用Long作为参数

@Transactional
public void deleteEmployee(Long id) {
    employeeRepoI.delete(id);
}