• 基于Java Springboot 集成spring-security简单示例(Version:springboot-2.1.3.RELEASE)
• 新建domain类，User和Role，用户和角色

package com.example.springboot.springbootsecurity.domain;

import com.fasterxml.jackson.annotation.JsonIgnore;
import lombok.Data;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import java.security.Timestamp;
import java.util.ArrayList;
import java.util.List;

@Data
public class User implements UserDetails {
   private Long id;
   private String username;
   private String password;
   private String nickname;
   private boolean enabled = false;
   private List<Role> roles;
   private String email;
   private String userface;
   private Timestamp regTime;

   @Override
   @JsonIgnore
   public boolean isAccountNonExpired() { // 帐户是否过期
       return true;
   }

   @Override
   @JsonIgnore
   public boolean isAccountNonLocked() { // 帐户是否被冻结
       return true;
   }

    // 帐户密码是否过期，一般有的密码要求性高的系统会使用到，比较每隔一段时间就要求用户重置密码
   @Override
   @JsonIgnore
   public boolean isCredentialsNonExpired() { 
       return true;
   }

   @Override
   public boolean isEnabled() {  // 帐号是否可用
       return enabled;
   }

   public void setEnabled(boolean enabled) {
       this.enabled = enabled;
   }

   @Override
   @JsonIgnore
   public List<GrantedAuthority> getAuthorities() {
       List<GrantedAuthority> authorities = new ArrayList<>();
       for (Role role : roles) {
           authorities.add(new SimpleGrantedAuthority("ROLE_" + role.getName()));
       }
       return authorities;
   }


    public User(String username, String password, List<Role> roles) {
        this.username = username;
        this.password = password;
        this.roles = roles;
    }
}

package com.example.springboot.springbootsecurity.domain;

import lombok.Data;

@Data
public class Role {

    private Integer id;
    private String name;


    public Role(){

    }

    public Role(String name) {
        this.name = name;
    }
}

• 新建MyUserDetailsService类并实现UserDetailsService接口

package com.example.springboot.springbootsecurity.service;

import com.example.springboot.springbootsecurity.domain.Role;
import com.example.springboot.springbootsecurity.domain.User;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;

import java.util.Arrays;

public class MyUserDetailsService implements UserDetailsService {

    private Logger logger = LoggerFactory.getLogger(getClass());

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        logger.info("用户的用户名: {}", username);
        // TODO 根据用户名，查找到对应的密码，与权限

        // 封装用户信息，并返回。参数分别是：用户名，密码，用户权限
        String encode = new BCryptPasswordEncoder().encode("123456");
        //123456   "$2a$10$rE5.RvkHaB06t.9GjGeaW.jNHysRQpBXObl3ZSahzBesfq7tAkX56"
        User user = new User(username, encode,
                Arrays.asList(new Role("admin")));
        user.setEnabled(true);
        return user;
  }
}

• 新建配置类WebSecurityConfig

package com.example.springboot.springbootsecurity.config;

import com.example.springboot.springbootsecurity.service.MyUserDetailsService;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;

@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {


    @Bean
    UserDetailsService userDetails(){
        return new MyUserDetailsService();
    }


    /**
     * 没有passwordEncoder会抛java.lang.IllegalArgumentException:
     *      There is no PasswordEncoder mapped for the id "null"
     */
    @Bean
    PasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }


    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.
                formLogin()             // 定义当需要用户登录时候，转到的登录页面。
                .and()
                .authorizeRequests()    // 定义哪些URL需要被保护、哪些不需要被保护
                .anyRequest()           // 任何请求,登录后可以访问
                .authenticated();

    }

}

• 配置成功之后，在控制台查找不到任何Using generated security password即已生效，之后可以用任何用户名，密码只要123456就能登陆,详情查看MyUserDetailsService类