我有两个微服务。
property-microservice实现假装客户端，以便通过链接从auth-service获取用户信息
/ AUTH /用户/获得/ {USER_ID}
property-microservice使用oauth2身份验证来访问上面的auth-service端点（工作正常，我可以得到响应）
但是auth-service不会返回默认响应数据，因此feign客户端拦截器无法从响应中解析auth令牌。
要清楚，这是spring提供的auth-service的默认响应：
{
"access_token": "6e7519de-f211-47ca-afc0-b65ede51bdfc",
"token_type": "bearer",
"refresh_token": "6146216f-bedd-42bf-b4e5-95131b0c6380",
"expires_in": 7199,
"scope": "ui"
}
但我确实会这样回复：
{
"code": 0,
"message": {
"type": "message",
"status": 200,
"result": 200,
"message": "Token aquired successfully."
},
"data": {
"access_token": "6e7519de-f211-47ca-afc0-b65ede51bdfc",
"token_type": "bearer",
"refresh_token": "6146216f-bedd-42bf-b4e5-95131b0c6380",
"expires_in": 7199,
"scope": "ui"
}
}
因此，fiegn客户端会查找标准响应数据，但由于我所做的修改而无法找到它。如果我只能覆盖 OAuth2AccessTokenSupport 类中的 ResponseExtractor ，我可以正确解析响应。如何管理从假装客户端解析自定义oauth2响应（或者是否有其他解决方案）？
Application.java（property-service）
// For jsr310 java 8 java.time.* support for JPA
@EntityScan(basePackageClasses = {Application.class, Jsr310JpaConverters.class})
@SpringBootApplication
@EnableResourceServer
@EnableOAuth2Client
@EnableFeignClients
@EnableHystrix
@EnableGlobalMethodSecurity(prePostEnabled = true)
@EnableConfigurationProperties
@Configuration
@EnableAutoConfiguration
public class Application extends ResourceServerConfigurerAdapter {
@Autowired
private ResourceServerProperties sso;
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
HystrixDummy.start();
}
@Bean
@ConfigurationProperties(prefix = "security.oauth2.client")
public ClientCredentialsResourceDetails clientCredentialsResourceDetails() {
return new ClientCredentialsResourceDetails();
}
@Bean
public RequestInterceptor oauth2FeignRequestInterceptor() {
return new OAuth2FeignRequestInterceptor(new DefaultOAuth2ClientContext(), clientCredentialsResourceDetails());
}
@Bean
public OAuth2RestTemplate clientCredentialsRestTemplate() {
return new OAuth2RestTemplate(clientCredentialsResourceDetails());
}
@Bean
public ResourceServerTokenServices tokenServices() {
return new CustomUserInfoTokenServices(this.sso.getUserInfoUri(), this.sso.getClientId());
}
}
AuthServiceClient（property-service）
@FeignClient(name = "auth-service", fallbackFactory = AuthServiceClient.AuthServiceClientFallback.class)
public interface AuthServiceClient {
@RequestMapping(path = "/auth/users/get/{userId}", method = RequestMethod.GET)
RestResponse get(@PathVariable(value = "userId") Long userId);
@Component
class AuthServiceClientFallback implements FallbackFactory<AuthServiceClient> {
@Override
public AuthServiceClient create(Throwable cause) {
return userId -> new RestResponse(null, AppConstant.CODE_FAILURE, null);
}
}
}
Application.java（auth-service）
@SpringBootApplication
@EnableResourceServer
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
UserController.java（auth-service）
@RestController
@RequestMapping("/users")
public class UserController {
@Autowired
private UserService userService;
@PreAuthorize("#oauth2.hasScope('server')")
@RequestMapping(value = "/get/{userId}", method = RequestMethod.GET)
public ResponseEntity<RestResponse> get(@Valid @PathVariable Long userId) throws UserNotFoundException {
User user = this.userService.findOne(userId);
RestResponse response = new RestResponse();
RestMessage message = new RestMessage();
message.setMessage(AppConstant.MESSAGE_USER_FETCHED_SUCCESS);
message.setResult(AppConstant.CODE_USER_FETCHED);
message.setStatus(HttpStatus.OK.value());
response.setCode(AppConstant.CODE_SUCCESS);
response.setMessage(message);
response.setData(user);
return new ResponseEntity<>(response, HttpStatus.OK);
}
}
答案 0 :(得分：0)
我最后写了这样的自定义FeignClientRequestInterceptor和FeignClientAccessTokenProvider：
<强> FeignClientAccessTokenProvider.java
public class FeignClientAccessTokenProvider extends ClientCredentialsAccessTokenProvider {
private ObjectMapper mapper = new ObjectMapper();
@Override
protected OAuth2AccessToken retrieveToken(AccessTokenRequest request, OAuth2ProtectedResourceDetails resource, MultiValueMap<String, String> form, HttpHeaders headers) throws OAuth2AccessDeniedException {
OAuth2AccessToken token = super.retrieveToken(request, resource, form, headers);
if (token != null && token.getValue() == null && token.getAdditionalInformation() != null) {
if (token.getAdditionalInformation().containsKey("data")) {
token = this.mapper.convertValue(token.getAdditionalInformation().get("data"), OAuth2AccessToken.class);
}
}
return token;
}
}
FeignClientRequestInterceptor .java
public class FeignClientRequestInterceptor implements RequestInterceptor {
public static final String BEARER = "Bearer";
public static final String AUTHORIZATION = "Authorization";
private final OAuth2ClientContext oAuth2ClientContext;
private final OAuth2ProtectedResourceDetails resource;
private final String tokenType;
private final String header;
private AccessTokenProvider accessTokenProvider = new AccessTokenProviderChain(Arrays
.<AccessTokenProvider>asList(new AuthorizationCodeAccessTokenProvider(),
new ImplicitAccessTokenProvider(),
new ResourceOwnerPasswordAccessTokenProvider(),
new FeignClientAccessTokenProvider()));
/**
* Default constructor which uses the provided OAuth2ClientContext and Bearer tokens
* within Authorization header
*
* @param oAuth2ClientContext provided context
* @param resource type of resource to be accessed
*/
public FeignClientRequestInterceptor(OAuth2ClientContext oAuth2ClientContext,
OAuth2ProtectedResourceDetails resource) {
this(oAuth2ClientContext, resource, BEARER, AUTHORIZATION);
}
/**
* Fully customizable constructor for changing token type and header name, in cases of
* Bearer and Authorization is not the default such as "bearer", "authorization"
*
* @param oAuth2ClientContext current oAuth2 Context
* @param resource type of resource to be accessed
* @param tokenType type of token e.g. "token", "Bearer"
* @param header name of the header e.g. "Authorization", "authorization"
*/
public FeignClientRequestInterceptor(OAuth2ClientContext oAuth2ClientContext,
OAuth2ProtectedResourceDetails resource, String tokenType, String header) {
this.oAuth2ClientContext = oAuth2ClientContext;
this.resource = resource;
this.tokenType = tokenType;
this.header = header;
}
/**
* Create a template with the header of provided name and extracted extract
*
* @see RequestInterceptor#apply(RequestTemplate)
*/
@Override
public void apply(RequestTemplate template) {
template.header(this.header, extract(this.tokenType));
}
/**
* Extracts the token extract id the access token exists or returning an empty extract
* if there is no one on the context it may occasionally causes Unauthorized response
* since the token extract is empty
*
* @param tokenType type name of token
* @return token value from context if it exists otherwise empty String
*/
protected String extract(String tokenType) {
OAuth2AccessToken accessToken = getToken();
return String.format("%s %s", tokenType, accessToken.getValue());
}
/**
* Extract the access token within the request or try to acquire a new one by
* delegating it to {@link #acquireAccessToken()}
*
* @return valid token
*/
public OAuth2AccessToken getToken() {
OAuth2AccessToken accessToken = this.oAuth2ClientContext.getAccessToken();
if (accessToken == null || accessToken.isExpired()) {
try {
accessToken = acquireAccessToken();
} catch (UserRedirectRequiredException e) {
this.oAuth2ClientContext.setAccessToken(null);
String stateKey = e.getStateKey();
if (stateKey != null) {
Object stateToPreserve = e.getStateToPreserve();
if (stateToPreserve == null) {
stateToPreserve = "NONE";
}
this.oAuth2ClientContext.setPreservedState(stateKey, stateToPreserve);
}
throw e;
}
}
return accessToken;
}
/**
* Try to acquire the token using a access token provider
*
* @return valid access token
* @throws UserRedirectRequiredException in case the user needs to be redirected to an
* approval page or login page
*/
protected OAuth2AccessToken acquireAccessToken()
throws UserRedirectRequiredException {
AccessTokenRequest tokenRequest = this.oAuth2ClientContext.getAccessTokenRequest();
if (tokenRequest == null) {
throw new AccessTokenRequiredException(
"Cannot find valid context on request for resource '"
+ this.resource.getId() + "'.",
this.resource);
}
String stateKey = tokenRequest.getStateKey();
if (stateKey != null) {
tokenRequest.setPreservedState(
this.oAuth2ClientContext.removePreservedState(stateKey));
}
OAuth2AccessToken existingToken = this.oAuth2ClientContext.getAccessToken();
if (existingToken != null) {
this.oAuth2ClientContext.setAccessToken(existingToken);
}
OAuth2AccessToken obtainableAccessToken;
obtainableAccessToken = this.accessTokenProvider.obtainAccessToken(this.resource,
tokenRequest);
if (obtainableAccessToken == null || obtainableAccessToken.getValue() == null) {
throw new IllegalStateException(
" Access token provider returned a null token, which is illegal according to the contract.");
}
this.oAuth2ClientContext.setAccessToken(obtainableAccessToken);
return obtainableAccessToken;
}
}
希望这有助于面对此问题的任何人。