Spring之junit测试集成

简介

Spring提供spring-test-5.2.1.RELEASE.jar 可以整合junit。

优势：可以简化测试代码（不需要手动创建上下文，即手动创建spring容器）

使用spring和junit集成的步骤

1.导入jar包

2.创建包com.igeek.test,创建类SpringTest

3.通过@Autowired注解，注入需要测试的对象

在这里注意两点：

举例说明一下

1.第一种：在applicationContext.xml中不开启注解扫描

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"      

xmlns:context="http://www.springframework.org/schema/context"       xmlns:aop="http://www.springframework.org/schema/aop"      

xsi:schemaLocation="http://www.springframework.org/schema/beans       

https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context

https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop

https://www.springframework.org/schema/aop/spring-aop.xsd">   

    <bean id="userService" class="com.igeek.service.impl.UserServiceImpl"></bean>

</beans>

public class UserServiceImpl implements IUserService {

    @Override   

    public void save() { 

        System.out.println("save...");   

    }

}

@RunWith(SpringJUnit4ClassRunner.class)

@ContextConfiguration(locations = "classpath:applicationContext.xml")

public class Test01 { 

    @Autowired   

    private IUserService userService;

    @Test   

    public void test01(){ 

        userService.save();   

    }

}

2.第二种：在applicationContext.xml中开启注解扫描

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"      

xmlns:context="http://www.springframework.org/schema/context"       xmlns:aop="http://www.springframework.org/schema/aop"      

xsi:schemaLocation="http://www.springframework.org/schema/beans       

https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context

https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop

https://www.springframework.org/schema/aop/spring-aop.xsd">  

<!--开启注解扫描-->   

<context:component-scan base-package="com.igeek"></context:component-scan>

</beans>

@Service("userService")

public class UserServiceImpl implements IUserService {

    @Override   

    public void save() { 

        System.out.println("save...");   

    }

}

@RunWith(SpringJUnit4ClassRunner.class)

@ContextConfiguration(locations = "classpath:applicationContext.xml")

public class Test01 { 

    @Autowired   

    private IUserService userService;

    @Test   

    public void test01(){ 

        userService.save();   

    }

}