Spring_01_Spring整合junit

1. 导入spring整合junit的jar（坐标）

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.1.5.RELEASE</version>
        </dependency>

2. 删掉重复代码，定义类的成员变量，让它自己按照类型注入@Autowired

//使用Junit单元测试：测试前面的配置
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:bean.xml")
public class AccountServiceTest {

    @Autowired
    private IAccountService as;

    @Test
    public void testFindAll() {
        //1.获取容器
        //ApplicationContext ac = new ClassPathXmlApplicationContext("bean.xml");

        //2.得到业务层对象
        //IAccountService as = ac.getBean("accountService", IAccountService.class); //或者不添加后面用强转
        //IAccountService as = (IAccountService) ac.getBean("accountService");

        //3.执行方法
        List<Account> accounts = as.findAllAccount();
        for (Account account : accounts) {
            System.out.println(account);
        }
    }

3. 使用junit提供的RunWith注解把原有的main方法替换成SpringJUnit4ClassRunner.class

@RunWith(SpringJUnit4ClassRunner.class)

4.告知spring的运行器，spring和ioc创建是基于xml还是注解，并说明位置 @ContextConfiguration

locations：指定xml文件的位置，加上classpath关键字，表示类路径下
classes：指定注解类所在的位置

@ContextConfiguration(locations = “classpath:bean.xml”）
@ContextConfiguration(classes = SpringConfiguration.class)