springboot2.x实现oauth2授权码登陆

参考文章：https://blog.csdn.net/qq_27828675/article/details/82466599

一 进行授权页

浏览器输入http://localhost:8081/oauth/authorize?response_type=code&redirect_uri=http://localhost:8081/callback&client_id=android1&scop=all

 

二 使用资源站用户登陆

自动跨到资源登陆页，先登陆

三 授权资源类型

登陆成功后，去授权你的资源，这些资源是在AuthorizationServerConfig.configure方法里配置的

@Override
public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
clients.inMemory()
.withClient(ClientID)
.secret(passwordEncoder.encode(ClientSecret))
.authorizedGrantTypes("authorization_code", "refresh_token",
"password", "implicit")
.scopes("read","write","del","userinfo")
.redirectUris(RedirectURLs);
}

四 接到code

授权之后，系统会重定向到你的redirect_uri这个页面，并带上唯一的code

五 获取access_token

我们拿着code就要再去授权服务器去获取token了，你可以在你的代码里写这个，也可以手动拿着code，去拼成一个url，再去拿token，就像这下面的实例。

注意向oauth/token发的是post请求，client_id和client_secret如果在url上传递，如果在AuthorizationServerConfig类的configure方法中开启allowFormAuthenticationForClients，代码如下

@Override
public void configure(AuthorizationServerSecurityConfigurer oauthServer) throws Exception {
  oauthServer.tokenKeyAccess("isAuthenticated()")
      .checkTokenAccess("permitAll()")
      .allowFormAuthenticationForClients();//支持把secret和clientid写在url上，否则需要在头上
}

然后请求后给有下面的响应

Authorization Ccode------RFRLFY
access_token_url http://localhost:8081/oauth/token?client_id=android1&code=RFRLFY&grant_type=authorization_code&redirect_uri=http://localhost:8081/callback&client_secret=android1
Access Token Response ---------{"access_token":"faadf3bf-6488-4036-bc3b-21b0a979602c","token_type":"bearer","refresh_token":"1b01f133-c5ab-419f-8125-088c85916ecb","expires_in":,"scope":"read"}

回调页面代码，主要实现了对code的获取，对access_token的组织，然后请求时把access_token带上，这个方法一般会做成公用的过滤器

@Controller
public class UserController {
  @RequestMapping(value = "/callback", method = RequestMethod.GET)
  public ResponseEntity<String> callback(@RequestParam("code") String code) throws JsonProcessingException, IOException {
    ResponseEntity<String> response = null;
    System.out.println("Authorization Ccode------" + code);
    RestTemplate restTemplate = new RestTemplate();
    String access_token_url = "http://localhost:8081/oauth/token";
    access_token_url += "?client_id=android1&code=" + code;
    access_token_url += "&grant_type=authorization_code";
    access_token_url += "&redirect_uri=http://localhost:8081/callback";
    access_token_url += "&client_secret=android1";
    System.out.println("access_token_url " + access_token_url);
    response = restTemplate.exchange(access_token_url, HttpMethod.POST, null, String.class);
    ObjectMapper mapper = new ObjectMapper();
    JsonNode node = mapper.readTree(response.getBody());
    String token = node.path("access_token").asText(); System.out.println("access_token" +access_token);

    String url = "http://localhost:8081/index"; HttpHeaders headers1 = new HttpHeaders(); headers1.add("Authorization", "Bearer " + token); HttpEntity<String> entity = new HttpEntity<>(headers1); ResponseEntity<String> result = restTemplate.exchange(url, HttpMethod.GET, entity, String.class); return result; }

六 拿着access_token去请求具体的资源

可以在url地址上直接：http://localhost:8081/index?access_token=faadf3bf-6488-4036-bc3b-21b0a979602c

七 如何开启oauth scopes授权

.access("#oauth2.hasScope('del')") 这个需要在ResourceServerConfig.configure里添加它，例如下载代码

@Configuration
@EnableResourceServer
@Order(6)
public class ResourceServerConfig extends ResourceServerConfigurerAdapter {
@Override
public void configure(HttpSecurity http) throws Exception {
http.csrf().disable()//禁用了 csrf 功能
.authorizeRequests()//限定签名成功的请求
.antMatchers("/index").access("#oauth2.hasScope('del')") //授权码scopes里需要选中del才可以访问
.antMatchers("/user").authenticated()//签名成功后可访问，不受role限制
.anyRequest().permitAll()//其他没有限定的请求，允许访问
.and().anonymous()//对于没有配置权限的其他请求允许匿名访问
.and().formLogin()//使用 spring security 默认登录页面
.and().httpBasic();//启用http 基础验证

}
}

八  需要注意的地方

如果你对用户进行了角色和权限的配置，对于某些保护接口需要有指定权限才能访问的话，需要重getAuthorities方法，否则，你的权限将会失效！

@Entity
@Data
public class User extends BaseEntity implements UserDetails {
  @Id
  @GeneratedValue
  private Long id;
  private String username;
  private String password;
  private String firstName;
  private String lastName;
  @Email
  private String email;
  private String imageUrl;

  @JsonIgnore
  @ManyToMany(targetEntity = Role.class, fetch = FetchType.EAGER)
  @BatchSize(size = 20)
  private Set<Role> roles = new HashSet<>();

  @Transient
  private Set<GrantedAuthority> authorities = new HashSet<>();

  /**
   * 注意，这块需要加@Override重写，否则权限无效.
   *
   * @return
   */
  @Override
  public Set<GrantedAuthority> getAuthorities() {
    Set<GrantedAuthority> authorities = new HashSet<>();
    for (Role role : this.roles) {
      for (Authority authority : role.getAuthorities()) {
        authorities.add(new SimpleGrantedAuthority(authority.getValue()));
      }
    }
    return authorities;
  }

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

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

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

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

感谢阅读！