feat: update X OAuth

src/main/java/com/openisle/service/TwitterAuthService.java

@@ -8,6 +8,7 @@ import lombok.RequiredArgsConstructor;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.*;
 import org.springframework.stereotype.Service;
+import org.springframework.web.client.HttpClientErrorException;
 import org.springframework.web.client.RestTemplate;
 import org.springframework.util.MultiValueMap;
 import org.springframework.util.LinkedMultiValueMap;
@@ -23,49 +24,64 @@ public class TwitterAuthService {
     @Value("${twitter.client-id:}")
     private String clientId;
 
-    public Optional<User> authenticate(String code, String codeVerifier, com.openisle.model.RegisterMode mode, String redirectUri) {
+    public Optional<User> authenticate(
+            String code,
+            String codeVerifier,
+            RegisterMode mode,
+            String redirectUri) {
+
+        // 1. 交换 token
+        String tokenUrl = "https://api.twitter.com/2/oauth2/token";
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
+        headers.setAccept(List.of(MediaType.APPLICATION_JSON));
+
+        // Twitter PKCE 要求的五个参数
+        MultiValueMap<String, String> body = new LinkedMultiValueMap<>();
+        body.add("client_id", clientId);
+        body.add("grant_type", "authorization_code");
+        body.add("code", code);
+        body.add("code_verifier", codeVerifier);
+        body.add("redirect_uri", redirectUri);      // 一律必填
+        // 如果你的 app 属于机密客户端，必须带 client_secret
+        // body.add("client_secret", clientSecret);
+
+        ResponseEntity<JsonNode> tokenRes;
         try {
-            String tokenUrl = "https://api.twitter.com/2/oauth2/token";
+            tokenRes = restTemplate.postForEntity(tokenUrl, new HttpEntity<>(body, headers), JsonNode.class);
-            HttpHeaders headers = new HttpHeaders();
+        } catch (HttpClientErrorException e) {
-            headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
-
-            MultiValueMap<String, String> body = new LinkedMultiValueMap<>();
-            body.add("client_id", clientId);
-            body.add("code", code);
-            body.add("grant_type", "authorization_code");
-            body.add("code_verifier", codeVerifier);
-            if (redirectUri != null) {
-                body.add("redirect_uri", redirectUri);
-            }
-
-            HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<>(body, headers);
-            ResponseEntity<JsonNode> tokenRes = restTemplate.postForEntity(tokenUrl, request, JsonNode.class);
-            if (!tokenRes.getStatusCode().is2xxSuccessful() || tokenRes.getBody() == null || !tokenRes.getBody().has("access_token")) {
-                return Optional.empty();
-            }
-            String accessToken = tokenRes.getBody().get("access_token").asText();
-
-            HttpHeaders authHeaders = new HttpHeaders();
-            authHeaders.setBearerAuth(accessToken);
-            HttpEntity<Void> entity = new HttpEntity<>(authHeaders);
-            ResponseEntity<JsonNode> userRes = restTemplate.exchange(
-                    "https://api.twitter.com/2/users/me", HttpMethod.GET, entity, JsonNode.class);
-            if (!userRes.getStatusCode().is2xxSuccessful() || userRes.getBody() == null) {
-                return Optional.empty();
-            }
-            JsonNode userNode = userRes.getBody();
-            String username = userNode.hasNonNull("username") ? userNode.get("username").asText() : null;
-            String email = null;
-            if (userNode.hasNonNull("email")) {
-                email = userNode.get("email").asText();
-            }
-            if (email == null) {
-                email = username + "@twitter.com";
-            }
-            return Optional.of(processUser(email, username, mode));
-        } catch (Exception e) {
             return Optional.empty();
         }
+
+        JsonNode tokenJson = tokenRes.getBody();
+        if (tokenJson == null || !tokenJson.hasNonNull("access_token")) {
+            return Optional.empty();
+        }
+        String accessToken = tokenJson.get("access_token").asText();
+
+        // 2. 拉取用户信息
+        HttpHeaders authHeaders = new HttpHeaders();
+        authHeaders.setBearerAuth(accessToken);
+        ResponseEntity<JsonNode> userRes;
+        try {
+            userRes = restTemplate.exchange(
+                    "https://api.twitter.com/2/users/me",
+                    HttpMethod.GET,
+                    new HttpEntity<>(authHeaders),
+                    JsonNode.class);
+        } catch (HttpClientErrorException e) {
+            return Optional.empty();
+        }
+
+        JsonNode data = userRes.getBody() == null ? null : userRes.getBody().path("data");
+        String username = data != null ? data.path("username").asText(null) : null;
+        if (username == null) {
+            return Optional.empty();
+        }
+
+        // Twitter v2 默认拿不到 email；如果你申请到 email.scope，可改用 /2/users/:id?user.fields=email
+        String email = username + "@twitter.com";
+        return Optional.of(processUser(email, username, mode));
     }
 
     private User processUser(String email, String username, com.openisle.model.RegisterMode mode) {