引入依赖

<!--下面两个是测试相关的jar包-->
<dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>5.1.5.RELEASE</version>
</dependency>
<dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.13</version><scope>test</scope>
</dependency>

测试类写法一：

import com.imooc.spring.jdbc.entity.Employee;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:applicationContext.xml")
public class EmployeeDaoTest {@Autowiredprivate EmployeeDao employeeDao;@Testpublic void findById() {Employee employee = employeeDao.findById(3308);System.out.println(employee);}
}

测试类写法二：

import com.imooc.spring.jdbc.entity.Employee;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;public class EmployeeDaoTest {@Testpublic void findById() {ApplicationContext context =new ClassPathXmlApplicationContext("classpath:applicationContext.xml");EmployeeDao employeeDao = context.getBean("employeeDao", EmployeeDao.class);Employee employee = employeeDao.findById(3308);System.out.println(employee);}
}