## spring-security
1. 首先在pom文件中增加依赖
```xml
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-security</artifactId>
</dependency>
```
2. 可选项，在application.yml文件中配置默认的用户名密码
```yaml
spring:
 security:
   user:
     name: xiaoyan159
     password: xiaoyan159062
     roles: admin
```