使用springSecurity实现登录认证和授权

1.引入依赖

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

2.编写相应的配置类

//开启Spring Security
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    @Override
    //认证，划分不同的角色
    protected void configure(HttpSecurity http) throws Exception {
        //首页所有人可以访问
        http.authorizeRequests()
                .antMatchers("/").permitAll()
                .antMatchers("/level1/**").hasRole("vip1")
                .antMatchers("/level2/**").hasRole("vip2")
                .antMatchers("/level3/**").hasRole("vip3");
        //没登陆前点需要权限的页面，会跳转至登陆页面
        //loginPage为自定义页面，loginProcessUrl为验证用户密码的路径
        http.formLogin().loginPage("/toLogin").loginProcessingUrl("/login");
        http.csrf().disable();
        //开启注销，注销成功跳转相应的页面
        http.logout().logoutSuccessUrl("/");
        //开启记住我
        http.rememberMe().rememberMeParameter("remember");
    }

    @Override
    //授权，赋予用户角色
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        //基于内存，授权
        auth.inMemoryAuthentication().passwordEncoder(new BCryptPasswordEncoder())
                .withUser("yzy").password(new BCryptPasswordEncoder().encode("123456"))
                .roles("vip1");
    }
}