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

@Configurable
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)//允许进入页面方法前检验
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

  @Autowired
  private MyAuthenticationProvider provider;//自定义验证
  @Autowired
  private UserDetailsService userDetailsService;//自定义用户服务
  @Autowired
  public void configAuthentication(AuthenticationManagerBuilder auth) throws Exception{
  }


  @Override
  protected void configure(HttpSecurity http) throws Exception {
    http.authorizeRequests()

    .antMatchers(StaticParams.PATHREGX.NOAUTH, 
        StaticParams.PATHREGX.CSS,StaticParams.PATHREGX.JS,StaticParams.PATHREGX.IMG).permitAll()//无需访问权限

    .antMatchers(StaticParams.PATHREGX.AUTHADMIN).hasAuthority(StaticParams.USERROLE.ROLE_ADMIN)//admin角色访问权限

    .antMatchers(StaticParams.PATHREGX.AUTHUSER).hasAuthority(StaticParams.USERROLE.ROLE_USER)//user角色访问权限

    .anyRequest()//all others request authentication
    .authenticated()
    .and()
    .formLogin().loginPage("/login").permitAll()
    .and()
    .logout().permitAll();
  }

  @Autowired
  public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
    //将验证过程交给自定义验证工具
    auth.authenticationProvider(provider);
  }

  @ResponseBody
  @PreAuthorize("hasAuthority('"+StaticParams.USERROLE.ROLE_ADMIN+"')")//这里可以指定特定角色的用户访问权限
  @RequestMapping(value = "adminrequire", method = RequestMethod.GET)
  public String adminrequire(){
    return "HELLO from web but you should be admin";
  }

/*用户表*/
@Entity
@Table(name = "user")
public class SystemUser {

  @Id
  @Column(name = "id")
  @GeneratedValue(strategy = GenerationType.AUTO)
  private Long id;

  private String userName;
  private String password;

  public SystemUser(){}

  public SystemUser(SystemUser user){
    this.userName = user.getUserName();
    this.password = user.getPassword();
    this.id = user.getId();
  }

  public Long getId() {
    return id;
  }
  public void setId(Long id) {
    this.id = id;
  }
  public String getUserName() {
    return userName;
  }
  public void setUserName(String userName) {
    this.userName = userName;
  }
  public String getPassword() {
    return password;
  }
  public void setPassword(String password) {
    this.password = password;
  }
}
/*角色表*/
@Entity
@Table(name = "user_role")
public class UserRole {

  @Id
  @Column(name = "id")
  @GeneratedValue(strategy = GenerationType.AUTO)
  private Long id;

  private String role;
  private Long userId;
  public Long getId() {
    return id;
  }
  public void setId(Long id) {
    this.id = id;
  }
  public String getRole() {
    return role;
  }
  public void setRole(String role) {
    this.role = role;
  }
  public Long getUserId() {
    return userId;
  }
  public void setUserId(Long userId) {
    this.userId = userId;
  }
}

@Autowired
  public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
    auth
      .inMemoryAuthentication()
        .withUser("user").password("password").roles("USER");
  }

public class MyUserDetails extends SystemUser implements UserDetails{

  private List<UserRole> roles;

  public MyUserDetails(SystemUser user, List<UserRole> roles){
    super(user);
    this.roles = roles;
  }

  @Override
  public Collection<? extends GrantedAuthority> getAuthorities() {
    if(roles == null || roles.size() <1){
      return AuthorityUtils.commaSeparatedStringToAuthorityList("");
    }
    StringBuilder commaBuilder = new StringBuilder();
    for(UserRole role : roles){
      commaBuilder.append(role.getRole()).append(",");
    }
    String authorities = commaBuilder.substring(0,commaBuilder.length()-1);
    return AuthorityUtils.commaSeparatedStringToAuthorityList(authorities);
  }

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

  @Override
  public String getUsername() {
    return super.getUserName();
  }

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

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

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

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

}

@Service("MyUserDetailsImpl")
public class MyUserDetailsService implements UserDetailsService {
  @Resource(name = "SystemUserServiceImpl")
  private SystemUserService systemUserService;

  @Resource(name = "UserRoleServiceImpl")
  private UserRoleService userRoleService;

  @Override
  public UserDetails loadUserByUsername(String userName) throws UsernameNotFoundException {
    SystemUser user;
    try {
      user = systemUserService.findByName(userName);
    } catch (Exception e) {
      throw new UsernameNotFoundException("user select fail");
    }
    if(user == null){
      throw new UsernameNotFoundException("no user found");
    } else {
      try {
        List<UserRole> roles = userRoleService.getRoleByUser(user);
        return new MyUserDetails(user, roles);
      } catch (Exception e) {
        throw new UsernameNotFoundException("user role select fail");
      }
    }
  }
}

@Component
public class MyAuthenticationProvider implements AuthenticationProvider {

  @Autowired
  private MyUserDetailsService userService;

  /**
   * 自定义验证方式
   */
  @Override
  public Authentication authenticate(Authentication authentication) throws AuthenticationException {
    String username = authentication.getName();
    String password = (String) authentication.getCredentials();
    MyUserDetails user = (MyUserDetails) userService.loadUserByUsername(username);
    if(user == null){
      throw new BadCredentialsException("Username not found.");
    }

    //加密过程在这里体现
    if (!password.equals(user.getPassword())) {
      throw new BadCredentialsException("Wrong password.");
    }

    Collection<? extends GrantedAuthority> authorities = user.getAuthorities();
    return new UsernamePasswordAuthenticationToken(user, password, authorities);
  }

  @Override
  public boolean supports(Class<?> arg0) {
    return true;
  }

}