3.5、 selectById 通过id查询

package com.wzy;
import com.wzy.pojo.Employees;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class testActiveRecord {
    ApplicationContext applicationContext =
            new ClassPathXmlApplicationContext("applicationContext.xml");
    @Test
    public void testSelectById(){
        Employees employees = new Employees();
        employees.setId(1);
        Employees employees1 = employees.selectById();
        System.out.println(employees1);//Employees(id=1, lastName=Tom, email=tom@atguigu.com, gender=1, age=22)
    }
}