spring6整合JUnit5

1.Spring支持JUnit4136

准备工作：

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0"         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">    <modelVersion>4.0.0</modelVersion>    <groupId>com.powernode</groupId>    <artifactId>course32</artifactId>    <version>1.0-SNAPSHOT</version>    <packaging>jar</packaging>    <!--仓库-->    <repositories>        <!--仓库里程碑版spring-->        <repository>            <id>repository.spring.milestone</id>            <name>Spring Milestone Repository</name>            <url>https://repo.spring.io/milestone</url>        </repository>    </repositories>    <dependencies>        <!--spring context依赖-->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-context</artifactId>            <version>6.0.0-M2</version>        </dependency>        <!--spring依赖junit支持  136-->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-test</artifactId>            <!--这个版本的spring6既支持JUnit4，也支持JUnit5.-->            <version>6.0.0-M2</version>        </dependency>        <!--依赖junit4-->        <dependency>            <groupId>junit</groupId>            <artifactId>junit</artifactId>            <version>4.13.2</version>            <scope>test</scope>        </dependency>    </dependencies>    <properties>        <maven.compiler.source>17</maven.compiler.source>        <maven.compiler.target>17</maven.compiler.target>    </properties></project>

<?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"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd                           http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">    <context:component-scan base-package="com.powernode.spring6.bean"/></beans>

package com.powernode.spring6.bean;import org.springframework.beans.factory.annotation.Value;import org.springframework.stereotype.Component;/** * 普通的bean **/@Componentpublic class User {    @Value(张三)    private String name;    @Override    public String toString() {        return "User{" +                "name='" + name + '\'' +                '}';    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public User() {    }    public User(String name) {        this.name = name;    }}

这些注释主要是Spring提供的便利：

@RunWith(SpringJunit4ClassRunner.class)

@ContextConfiguration("classpath:spring.xml")

在单元测试类中使用这两个注释后，可以使用单元测试类中的属性@Autowired。比较方便。

package com.powernode.spring6.test;import com.powernode.spring6.bean.User;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJunit4ClassRunner;/** * 支持JUnit4的Spring   136 **/@RunWith(SpringJunit4ClassRunner.class)  ///这是junit中的注释@ContextConfiguration("classpath:spring.xml()//这是spring框架中的注解public class SpringJunit4Test {    @Autowired    private User user; ///注入User类    @Test    public void testUser(){        /*ApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring.xml");        User user = applicationContext.getBean("user", User.class);*/        System.out.println(user.getName());    }    @Test    public void testuser2(){        /*ApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring.xml");        User user = applicationContext.getBean("user", User.class);*/        System.out.println(user.getName());    }    @Test    public void testuser3(){       /* ApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring.xml");        User user = applicationContext.getBean("user", User.class);*/        System.out.println(user.getName());    }}

Spring依赖Junit5，依赖Junit支持：spring-test，如下：

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0"         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">    <modelVersion>4.0.0</modelVersion>    <groupId>com.powernode</groupId>    <artifactId>spring6-015-junit</artifactId>    <version>1.0-SNAPSHOT</version>    <packaging>jar</packaging>    <!--仓库-->    <repositories>        <!--仓库里程碑版spring-->        <repository>            <id>repository.spring.milestone</id>            <name>Spring Milestone Repository</name>            <url>https://repo.spring.io/milestone</url>        </repository>    </repositories>    <dependencies>        <!--spring context依赖-->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-context</artifactId>            <version>6.0.0-M2</version>        </dependency>        <!--支持Junit的spring相关依赖-->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-test</artifactId>            <version>6.0.0-M2</version>        </dependency>        <!--依赖junit5-->        <dependency>            <groupId>org.junit.jupiter</groupId>            <artifactId>junit-jupiter</artifactId>            <version>5.9.0</version>            <scope>test</scope>        </dependency>    </dependencies>    <properties>        <maven.compiler.source>17</maven.compiler.source>        <maven.compiler.target>17</maven.compiler.target>    </properties></project>

package com.powernode.spring6.test;import com.powernode.spring6.bean.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;/** * 支持JUnit5的Spring  137 **/@ExtendWith(SpringExtension.class)@ContextConfiguration("classpath:spring.xml")public class SpringJunit5Test {    @Autowired    private User user;    @Test    public void testUser(){        System.out.println(user.getName());    }}