spring —— spring 整合 junit
如果不使用 spring 整合 junit,每次取对象时都要建立 spring 容器,然后从 spring 容器中提取对象,也就是以下两行代码:
//建立spring容器
ApplicationContext context = new ClassPathXmlApplicationContext("xxx.xml");
//从spring容器中提取对象
XX xx = (XX) context.getBean("XX");
使用 spring 整合 junit,则可以省略这一步骤。根据 junit 版本不同,可分为 spring 整合 junit5,或者 spring 整合 junit4。
一、spring 整合 junit5
(一)pom 文件中需添加依赖:
<dependency>
<!--spring整合junit依赖-->
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>6.1.3</version>
</dependency>
<dependency>
<!--junit5依赖-->
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>5.9.0</version>
</dependency>
(二)spring-config.xml 文件配置:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<context:component-scan base-package="com.atguigu.spring6"></context:component-scan>
</beans>
(三)java 代码:
目标类:
package com.atguigu.spring6;
import org.springframework.stereotype.Component;
@Component
public class User {
}
测试类(第一种写法):
package com.test;
import com.atguigu.spring6.User;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
@SpringJUnitConfig(locations = "classpath:bean.xml")
public class UserTest {
@Autowired
private User user;
@Test
public void run(){
System.out.println(user);
}
}
测试类(第二种写法):
package com.test;
import com.atguigu.spring6.User;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit.jupiter.SpringExtension;
@ExtendWith(SpringExtension.class)
@ContextConfiguration("classpath:bean.xml")
public class UserTest {
@Autowired
private User user;
@Test
public void run(){
System.out.println(user);
}
}
二、spring 整合 junit4
(一)pom 文件中需添加依赖:
<dependency>
<!--spring整合junit依赖-->
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>6.1.3</version>
</dependency>
<dependency>
<!--junit4依赖-->
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.2</version>
</dependency>
(二)spring-config.xml 文件配置:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<context:component-scan base-package="com.atguigu.spring6"></context:component-scan>
</beans>
(三)java 代码:
目标类:
package com.atguigu.spring6;
import org.springframework.stereotype.Component;
@Component
public class User {
}
测试类:
package com.test;
import com.atguigu.spring6.User;
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("classpath:bean.xml")
public class UserTest {
@Autowired
private User user;
@Test
public void run(){
System.out.println(user);
}
}
注意:
spring 整合 junit5 和 junit4,除了依赖不同,注解不同,@Test 也不相同。
原文地址:https://blog.csdn.net/firstgrass/article/details/140674898
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