Spring boot整合Junit

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一.整合Junit

• 先创建一个数据库,并加入点数据来进行操作

DROP TABLE IF EXISTS `s_user`;
CREATE TABLE `s_user` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `user_name` varchar(100) DEFAULT NULL COMMENT '用户名',
  `password` varchar(100) DEFAULT NULL COMMENT '密码',
  `name` varchar(100) DEFAULT NULL COMMENT '姓名',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8;

INSERT INTO `user` VALUES ('1', 'zhangsan', '123456', '张三');
INSERT INTO `user` VALUES ('2', 'lisi', '123456', '李四');
INSERT INTO `user` VALUES ('3', 'wangwu', '123456', '王五');
INSERT INTO `user` VALUES ('4', 'zhangwei', '123456', '张伟');
INSERT INTO `user` VALUES ('5', 'lina', '123456', '李娜');
INSERT INTO `user` VALUES ('6', 'lilei', '123456', '李磊');

1.加依赖

<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>it.playmaker</groupId>
  <artifactId>SpringBoot-play</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.6.RELEASE</version>
	</parent>
	
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		
		<dependency>
		     <groupId>org.springframework.boot</groupId>
		      <artifactId>spring-boot-starter-data-jpa</artifactId>
		</dependency>
		
		<dependency>
		      <groupId>mysql</groupId>
		      <artifactId>mysql-connector-java</artifactId>
		</dependency>

		      <dependency>
		      <groupId>org.mybatis.spring.boot</groupId>
		       <artifactId>mybatis-spring-boot-starter</artifactId>
		      <version>1.1.1</version>
			</dependency>
         

           <!—配置测试启动器—>
		<dependency>
		       <groupId>org.springframework.boot</groupId>
		       <artifactId>spring-boot-starter-test</artifactId>
		</dependency>
         
		
	</dependencies>
	
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>
    
	
</project>

2.加入Spring-Boot配置文件

#DB Configuration:
spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/xxxx?characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=xxxxx

#JPA Configuration:
spring.jpa.database=mysql
spring.jpa.show-sql=true  
spring.jpa.generate-ddl=true  #是否自动生成ddl
spring.jpa.hibernate.ddl-auto=update   #生成ddl的方式
spring.jpa.hibernate.naming_strategy=org.hibernate.cfg.ImprovedNamingStrategy  #选择的命名策略

3.实体类

@Entity
@Table(name="s_user")//对应表
public class User {
	 @Id
	 @Column(name="id")
	 @GeneratedValue(strategy=GenerationType.IDENTITY)//自增长
     private Long id;
	 
	 @Column(name="user_name")//在windows系统下mysql不区分大小写。在Linux系统下,区分大小写
     private String user_name;
	 
	 @Column(name="password")
     private String password;
	 
	 @Column(name="name")
     private String name;
	 
	public Long getId() {
		return id;
	}
	public void setId(Long id) {
		this.id = id;
	}
	public String getUser_name() {
		return user_name;
	}
	public void setUser_name(String user_name) {
		this.user_name = user_name;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	@Override
	public String toString() {
		return "User [id=" + id + ", user_name=" + user_name + ", password=" + password + ", name=" + name + "]";
	}
     
}

4.编写Mapper类

@Mapper
public interface IUserMapper {

    @Select("select * from s_user")
	public List<User> findAll();
}

5.用户业务逻辑

public interface IUserService {
       
     //查询所有用户
	List<User> findAll();

}

6.用户业务逻辑实现类

@Service("userService")
public class UserServiceImpl implements IUserService {

	
	@Autowired
	private IUserMapper userMapper;
	
	public List<User> findAll() {
		return userMapper.findAll();
	}

}

7.引导类

@SpringBootApplication 
public class Application {

	public static void main(String[] args) {
		SpringApplication.run(Application.class, args);

	}

}

8.创建一个测试类

@RunWith(SpringRunner.class)
@SpringBootTest
@Import(Application.class)//属性:用于指定引导类
public class SpringBootJunitTest {

	      @Autowired
	      private IUserService userService;
	      

	      public void testFindAll() {
	    	    List<User> list=userService.findAll();
	    	    System.out.println(list);
	      }
}

二.读取Spring Boot核心配置文件内容

@RunWith(SpringRunner.class)
@SpringBootTest
@Import(Application.class)//属性:用于指定引导类
public class SpringBootJunitTest {

	      //@Autowired 字段类型注入
	      @Resource
	      private Environment env;
	      @Test
	      public void testReadSpringBootConfig() {
	    	    System.out.println(env.getProperty("spring.datasource.url"));
	      }
}