springboot 使用数据库用户权限登录

1、加入spring security的支持包，

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

2、主要实现两个接口，一个是UserDetails 用户详细信息，一个是UserDetailsService用户信息服务

public class AuthorityUser implements UserDetails {
    private NewUser user;

    public AuthorityUser(NewUser newUser) {
        this.user = newUser;
    }

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        List<NewAuthority> newAuthorities = user.getNewAuthorities();
        if(user == null || newAuthorities.size() <1){
            return AuthorityUtils.commaSeparatedStringToAuthorityList("");
        }
        StringBuilder commaBuilder = new StringBuilder();
        for(NewAuthority authority : newAuthorities){
            commaBuilder.append(authority.getName()).append(",");
        }
        String authorities = commaBuilder.substring(0,commaBuilder.length()-1);
        return AuthorityUtils.commaSeparatedStringToAuthorityList(authorities);

    }
    @Override
    public String getPassword() {
        return user.getPassword();
    }
    @Override
    public String getUsername() {
        return user.getUsername();
    }

    @Override
    public boolean isAccountNonExpired() {
        return true;
    }

    @Override
    public boolean isAccountNonLocked() {
        return true;
    }

    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }

    @Override
    public boolean isEnabled() {
        return user.getEnable().equals(1)?true:false;
    }
}

　　

public class SpringDataUserDetailsService implements UserDetailsService {
    @Autowired
    NewUserMapper newUserMapper;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        NewUser user = newUserMapper.findByUsername(username);
        if (user == null) {
            throw new UsernameNotFoundException("username:" + username + " not found");
        }
        return new AuthorityUser(user);
    }
}

　　

3、在继承WebSecurityConfigurerAdapter 子类中添加资源拦截规则和 用户权限规则

@EnableWebSecurity
public class MySecurityConfig extends WebSecurityConfigurerAdapter {
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        //自定义权限规则
        http.authorizeRequests().antMatchers("/").permitAll()
                .antMatchers("/level1/**").hasAuthority("VIP1")
                .antMatchers("/level2/**").hasAuthority("VIP2")
                .antMatchers("/level3/**").hasAuthority("VIP3");

        //开启自动配置的登陆功能
        http.formLogin().usernameParameter("user").passwordParameter("pwd").loginPage("/userlogin");
        //开启自动配置注销
        http.logout().logoutSuccessUrl("/");//注销成功来到首页

        http.rememberMe().rememberMeParameter("remenber");//开启记住我功能
    }
    //定义认证规则
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
　　　　//设置自定义UserDetailService,用以从数据库加载用户信息
        auth.userDetailsService(springDataUserDetailsService())
                //设置密码加密
            .passwordEncoder(new MyPasswordEncoder());
    }


    @Bean
    public SpringDataUserDetailsService springDataUserDetailsService() {
        return new SpringDataUserDetailsService();
    }