spring需要创建spring容器,每次创建容器
单元测试是测试单元代码
junit4
依赖
<?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">
<parent>
<artifactId>02-Spring</artifactId>
<groupId>org.example</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>023-jUnit</artifactId>
<properties>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>6.0.4</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>6.0.4</version>
</dependency>
</dependencies>
</project>
配置文件
<?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">
<!-- 开启扫描-->
<context:component-scan base-package="com.powernode.spring6.bean"/>
</beans>
实体类
package com.powernode.spring6.bean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
/**
* @BelongsProject: 02-Spring
* @BelongsPackage: com.powernode.spring6.bean
* @Author: dengLiMei
* @CreateTime: 2023-02-21 09:07
* @Description: TODO
* @Version: 1.0
*/
@Component
public 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;
}
}
主函数
没有使用junit4之前
public class SpringJunit4Test {
@Test
public void testUser(){
ApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
User user = context.getBean("user", User.class);
System.out.println(user.getName());
}
public void testUser1(){
ApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
User user = context.getBean("user", User.class);
System.out.println(user.getName());
}
public void testUser2(){
ApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
User user = context.getBean("user", User.class);
System.out.println(user.getName());
}
}
}
使用junit4之后
//Spring对Junit4的支持
@RunWith(SpringRunner.class)
@ContextConfiguration("classpath:spring.xml")
public class SpringJunit4Test {
@Autowired
private User user;
@Test
public void testUser() {
System.out.println(user.getName());
}
public void testUser1() {
System.out.println(user.getName());
}
public void testUser2() {
System.out.println(user.getName());
}
通过一张图我们来对比一下更直观,如下图:
junit5
依赖
<?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">
<parent>
<artifactId>02-Spring</artifactId>
<groupId>org.example</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>023-jUnit5</artifactId>
<properties>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>6.0.4</version>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter</artifactId>
<version>5.9.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>6.0.4</version>
</dependency>
</dependencies>
</project>
配置文件
<?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">
<!-- 开启扫描-->
<context:component-scan base-package="bean"/>
</beans>
实体类
package bean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
/**
* @BelongsProject: 02-Spring
* @BelongsPackage: com.powernode.spring6.bean
* @Author: dengLiMei
* @CreateTime: 2023-02-21 09:07
* @Description: TODO
* @Version: 1.0
*/
@Component
public 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;
}
}
主函数
import 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;
/**
* @BelongsProject: 02-Spring
* @BelongsPackage: PACKAGE_NAME
* @Author: dengLiMei
* @CreateTime: 2023-02-21 11:18
* @Description: TODO
* @Version: 1.0
*/
@ExtendWith(SpringExtension.class)
@ContextConfiguration("classpath:spring.xml")
public class Main {
@Autowired
private User user;
@Test
public void testUser() {
System.out.println(user.getName());
}
public void testUser1() {
System.out.println(user.getName());
}
public void testUser2() {
System.out.println(user.getName());
}
}
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