关于application.yml数据库配置方式

server:
  port: 8001
#spring的配置
spring:
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource #数据源为druid
    driver-class-name: com.mysql.cj.jdbc.Driver #数据库驱动
    url: jdbc:mysql://localhost:3306/spring_cloud?useSSL=false&useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai
    username: root
    password: root

<!--Mysql驱动-->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.24</version>
    <scope>runtime</scope>
</dependency>
<!--alibaba数据库数据源-->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.10</version>
</dependency>

#北京东八区
serverTimezone=GMT%2B8
#上海时区
serverTimezone=Asia/Shanghai

#简单配置
server:
  port: 80

#对象配置
users:
  name: zhangsan
  id: 18

#简单列表配置,- 后跟1个空格
likes:
  - 游泳
  - 打球
  - 读书
  
#列表中是对象,key: value，不要忘记:后的空格 
books: [{name: 三国,id: 435},{name: 水壶,id: 6599}]

#在配置文件中可以使用属性名引用方式引用属性
baseDir: /usr/local/fire
center:
  dataDir: ${baseDir}/data
  logDir: ${baseDir}/log

#属性值中如果出现转义字符，需要使用双引号包裹
lesson: "Spring\tboot\nlesson"

@Value("${books[1].name}")
private String bookName;

@Autowired
private Environment env;

System.out.println(env.getProperty("books[1].name"));

datasource:
  driver-class-name: com.mysql.cj.jdbc.Driver
  url: jdbc:mysql://localhost:3306/ssm_db?serverTimezone=UTC
  username: root
  password: root

@Component  //bean对象，由spring来管理
@ConfigurationProperties(prefix = "datasource") //获取yml文件中datasource的属性，需要get和set方法，此处省略
public class MyDataSource {
    private String driverClassName;
    private String url;
    private String userName;
    private String password;
}

@Autowired
private MyDataSource myDataSource;