1.19、插入数据后获取主键值

MyBatisPlus 在插入数据后，可以通过JavaBean的get方法获取到id。

package com.wzy;
import com.wzy.mapper.EmployeesMapper;
import com.wzy.pojo.Employees;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
public class TestS {
    //1.读取配置文件
    private ApplicationContext applicationContext =
            new ClassPathXmlApplicationContext("applicationContext.xml");
    private EmployeesMapper employeesMapper =
            applicationContext.getBean("employeesMapper", EmployeesMapper.class);
    private Employees employees = new Employees();
    @Test
    public void  test1() throws SQLException {
        employees.setId(null);
        employees.setLastName("李连杰");
        employees.setEmail("lilianjie@163.com");
        employees.setGender(1);
        employees.setAge(60);
        Integer insert = employeesMapper.insert(employees);
        System.out.println(insert);//1
        //获取数据插入后的id
        Integer id = employees.getId();
        System.out.println(id);//8
    }
}