mybatis详解-(7)增删改查

1.新建对象

新建对象Employee

package org.mybatis.crud;

public class Employee {
   
     
    private Integer id;
    private String lastName;
    private String email;
    private String gender;

    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getLastName() {
        return lastName;
    }
    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
    public String getGender() {
        return gender;
    }
    public void setGender(String gender) {
        this.gender = gender;
    }
    @Override
    public String toString() {
        return "Employee [id=" + id + ", lastName=" + lastName + ", email=" + email
                + ", gender=" + gender + "]";
    }
}

2.新建Mapper接口

新建EmployeeMapper接口

package org.mybatis.crud;

public interface EmployeeMapper {
   
     

    public Employee getEmployeeById(int id);

    public void addEmployee(Employee employee);

    public void updateEmployee(Employee employee);

    public void deleteEmployee(int id);
}