Spring Security基于数据库实现认证过程解析

SET FOREIGN_KEY_CHECKS=0;
	-- ----------------------------
	-- Table structure for role
	-- ----------------------------
	DROP TABLE IF EXISTS `role`;
	CREATE TABLE `role` (
	`id` int(11) NOT NULL AUTO_INCREMENT,
	`name` varchar(32) DEFAULT NULL,
	`nameZh` varchar(32) DEFAULT NULL,
	PRIMARY KEY (`id`)
	) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
	-- ----------------------------
	-- Records of role
	-- ----------------------------
	INSERT INTO `role` VALUES ('1', 'dba', '数据库管理员');
	INSERT INTO `role` VALUES ('2', 'admin', '系统管理员');
	INSERT INTO `role` VALUES ('3', 'user', '用户');
	-- ----------------------------
	-- Table structure for user
	-- ----------------------------
	DROP TABLE IF EXISTS `user`;
	CREATE TABLE `user` (
	`id` int(11) NOT NULL AUTO_INCREMENT,
	`username` varchar(32) DEFAULT NULL,
	`password` varchar(255) DEFAULT NULL,
	`enabled` tinyint(1) DEFAULT NULL,
	`locked` tinyint(1) DEFAULT NULL,
	PRIMARY KEY (`id`)
	) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
	-- ----------------------------
	-- Records of user
	-- ----------------------------
	INSERT INTO `user` VALUES ('1', 'root', '$2a$10$RMuFXGQ5AtH4wOvkUqyvuecpqUSeoxZYqilXzbz50dceRsga.WYiq', '1', '0');
	INSERT INTO `user` VALUES ('2', 'admin', '$2a$10$RMuFXGQ5AtH4wOvkUqyvuecpqUSeoxZYqilXzbz50dceRsga.WYiq', '1', '0');
	INSERT INTO `user` VALUES ('3', 'sang', '$2a$10$RMuFXGQ5AtH4wOvkUqyvuecpqUSeoxZYqilXzbz50dceRsga.WYiq', '1', '0');
	-- ----------------------------
	-- Table structure for user_role
	-- ----------------------------
	DROP TABLE IF EXISTS `user_role`;
	CREATE TABLE `user_role` (
	`id` int(11) NOT NULL AUTO_INCREMENT,
	`uid` int(11) DEFAULT NULL,
	`rid` int(11) DEFAULT NULL,
	PRIMARY KEY (`id`)
	) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=utf8;
	-- ----------------------------
	-- Records of user_role
	-- ----------------------------
	INSERT INTO `user_role` VALUES ('1', '1', '1');
	INSERT INTO `user_role` VALUES ('2', '1', '2');
	INSERT INTO `user_role` VALUES ('3', '2', '2');
	INSERT INTO `user_role` VALUES ('4', '3', '3');
	SET FOREIGN_KEY_CHECKS=1;

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
  <groupId>org.mybatis.spring.boot</groupId>
  <artifactId>mybatis-spring-boot-starter</artifactId>
  <version>2.1.3</version>
</dependency>

<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <scope>runtime</scope>
  <version>5.1.46</version>
</dependency>
<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>druid-spring-boot-starter</artifactId>
  <version>1.1.22</version>
</dependency>

public class User implements UserDetails {
  private Integer id;
  private String username;
  private String password;
  private Boolean enabled;
  private Boolean locked;

  private List<Role> roles;

  public List<Role> getRoles() {
    return roles;
  }

  public void setRoles(List<Role> roles) {
    this.roles = roles;
  }

  public Integer getId() {
    return id;
  }

  public void setId(Integer id) {
    this.id = id;
  }

  public void setUsername(String username) {
    this.username = username;
  }

  public void setPassword(String password) { this.password = password; }

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

  public void setLocked(Boolean locked) {
    this.locked = locked;
  }

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

  @Override
  public String getPassword() {
    return password;
  }

  public String getUsername() {
    return username;
  }

  //账户是否未过期
  @Override
  public boolean isAccountNonExpired() {
    return true;
  }

  //账户是否未锁定
  @Override
  public boolean isAccountNonLocked() {
    return !locked;
  }

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

  @Override
  public boolean isEnabled() {
    return enabled;
  }
}

public class Role {
  private Integer id;
  private String name;
  private String nameZh;
...
}

@Mapper
public interface UserMapper {
  User loadUserByUsername(String username);

  List<Role> getUserRolesById(Integer id);
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
    PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
    "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.qwl.mysecuritydb.mapper.UserMapper">
  <select id="loadUserByUsername" resultType="com.qwl.mysecuritydb.bean.User">
    select * from user where username = #{username}
  </select>
  <select id="getUserRolesById" resultType="com.qwl.mysecuritydb.bean.Role">
    select * from role where id in(select rid from user_role where uid=#{id})
  </select>
</mapper>

@Service
public class UserService implements UserDetailsService {
  @Autowired
  UserMapper userMapper;

  @Override
  public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
    User user =userMapper.loadUserByUsername(username);
    if(user==null){
      throw new UsernameNotFoundException("用户不存在");
    }
    user.setRoles(userMapper.getUserRolesById(user.getId()));
    return user;
  }
}

@RestController
public class HelloController {
  @GetMapping("/hello")
  public String hello(){
    return "hello security";
  }

  @GetMapping("/dba/hello")
  public String dba(){
    return "hello dba";
  }

  @GetMapping("/admin/hello")
  public String admin(){
    return "hello admin";
  }

  @GetMapping("/user/hello")
  public String user(){
    return "hello user";
  }
}

@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {
  @Autowired
  UserService userService;

		//把数据库查出的用户信息交给SpringSecurity处理
  @Override
  protected void configure(AuthenticationManagerBuilder auth) throws Exception {
    auth.userDetailsService(userService);
  }

  @Bean
  PasswordEncoder passwordEncoder(){
    return new BCryptPasswordEncoder();
  }

  @Override
  protected void configure(HttpSecurity http) throws Exception {
    http.authorizeRequests()
        .antMatchers("/dba/**").hasRole("dba")
        .antMatchers("/admin/**").hasRole("admin")
        .antMatchers("/user/**").hasRole("user")
        .anyRequest().authenticated()
        .and()
        .formLogin()
        .permitAll()
        .and()
        .csrf().disable();

  }
}