SpringBoot整合SpringSecurity的三种方式

导入依赖

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

<!--测试的-->
<dependency>
     <groupId>org.springframework.security</groupId>
     <artifactId>spring-security-test</artifactId>
     <scope>test</scope>
</dependency>
     

方式一：在application.properties中配置

server.port= 8080
spring.security.user.name= xxx
spring.security.user.password=xxx

方式二：通过配置类

//第二种实现方式
public class myTwoSecurity extends WebSecurityConfigurerAdapter {
    @Override
    public void configure(AuthenticationManagerBuilder auth) throws Exception {
        /*加密密码*/
        BCryptPasswordEncoder bCryptPasswordEncoder = new BCryptPasswordEncoder();
        String encode = bCryptPasswordEncoder.encode("123");
        /*用户数据*/
        auth.inMemoryAuthentication().withUser("lok").password(encode).roles("admin");
    }
    @Bean
    public PasswordEncoder password(){ return  new BCryptPasswordEncoder();}
}

方式三：自定义配置类 模拟从数据库查询数据

1、编写配置类

@Configuration
public class MySecurity  extends WebSecurityConfigurerAdapter {
    @Autowired
    private UserDetailsService userDetailsService;

    @Override
    public void configure(AuthenticationManagerBuilder auth) throws Exception {
       auth.userDetailsService(userDetailsService).passwordEncoder(password());
    }
    @Bean
    public PasswordEncoder password(){ return  new BCryptPasswordEncoder();}
}

2、编写Service

@Service("userDetailsService")
//注意@Service("userDetailsService") 的名字 要与1中private UserDetailsService userDetailsService;的相同

public class MyUser implements UserDetailsService {
    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        /*模拟角色权限*/
        List<GrantedAuthority> authorities= AuthorityUtils.commaSeparatedStringToAuthorityList("roole");
        /*模拟用户数据*/
        System.out.println("走到这里");
        return new User("xiaokai",new BCryptPasswordEncoder().encode("123"),authorities);
    }
}