spring boot security

1.这里面安装这个

 2.跑起来发现,给了我们一个密码

 3.我们直接访问本地的localhost:8080/login,默认用户名是user

 4. 这里设置默认的账号密码

5.我们新建一个security文件夹，DemoSecurityConfig类

package com.example18.example_18.security;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.provisioning.InMemoryUserDetailsManager;

@Configuration
public class DemoSecurityConfig {
    @Bean
    public InMemoryUserDetailsManager userDetailsManager(){
        UserDetails join= User.builder()
                .username("john")
                .password("{noop}test123")
                .roles("EMPLOYEE")
                .build();
        UserDetails mary= User.builder()
                .username("mary")
                .password("{noop}test123")
                .roles("EMPLOYEE","MANAGER")
                .build();

        UserDetails susan= User.builder()
                .username("susan")
                .password("{noop}test123")
                .roles("EMPLOYEE","MANAGER","ADMIN")
                .build();

        return new InMemoryUserDetailsManager(join,mary,susan);
    }
}

6.我们访问发现没授权

 把上面的账号密码输入，成功了

7.通过角色来分批管理，DemoSecurityConfig 类

package com.example18.example_18.security;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.config.Customizer;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.provisioning.InMemoryUserDetailsManager;
import org.springframework.security.web.SecurityFilterChain;

@Configuration
public class DemoSecurityConfig {
    @Bean
    public InMemoryUserDetailsManager userDetailsManager(){
        UserDetails join= User.builder()
                .username("john")
                .password("{noop}test123")
                .roles("EMPLOYEE")
                .build();
        UserDetails mary= User.builder()
                .username("mary")
                .password("{noop}test123")
                .roles("EMPLOYEE","MANAGER")
                .build();

        UserDetails susan= User.builder()
                .username("susan")
                .password("{noop}test123")
                .roles("EMPLOYEE","MANAGER","ADMIN")
                .build();

        return new InMemoryUserDetailsManager(join,mary,susan);
    }

    @Bean
    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception{
        http.authorizeHttpRequests(configurer ->
                configurer
                        .requestMatchers(HttpMethod.GET,"/students").hasRole("MANAGER")
                );
//        use HTTP Basic authentication
        http.httpBasic(Customizer.withDefaults());
        //disable Cross site Request Forgery
        http.csrf(csrf -> csrf.disable());
        return http.build();
    }

}

8.如何利用支持数据库的来查询