创建springboot 项目，引入spring security坐标

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--spring security坐标-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

然后启动项目，访问任意一个controller的请求地址结果会跳转到一个登录界面：

@RestController
public class HelloController {

    @RequestMapping("hello")
    public String hello() {
        return "hello spring security";
    }
}

 

 http://localhost:8080/hello

默认的用户名：user

默认的密码：在项目启动日志里面有一个 Using generated security password: c7006a0b-c0df-46ae-812c-2859d02492ac