feat(service): 实现微信 access_token 缓存机制

@@ -7,6 +7,7 @@ import com.infoloop.tianting.server.StorageService;
 import com.infoloop.tianting.server.StorageServiceFactory;
 import com.infoloop.tianting.store.LoginCodeStore;
 import com.infoloop.tianting.store.WeeklyTaskStore;
+import com.infoloop.tianting.store.WxAccessTokenStore;
 import com.infoloop.tianting.utils.SmsUtil;
 import io.lettuce.core.api.StatefulRedisConnection;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -33,6 +34,12 @@ public class AppConfig {
     }
 
     @Bean
+    public WxAccessTokenStore wxAccessTokenStore(@Autowired @Qualifier(REDIS_CONNECTION) final StatefulRedisConnection<String, String> connection) {
+        final var commands = connection.sync();
+        return new WxAccessTokenStore(commands, 7000);
+    }
+
+    @Bean
     public WeeklyTaskStore weeklyTaskStore(@Autowired @Qualifier(REDIS_CONNECTION) final StatefulRedisConnection<String, String> connection) {
         final var commands = connection.sync();
         final var expireSeconds = Duration.ofDays(8).getSeconds();

@@ -4,6 +4,8 @@ public class RedisKeyConstants {
 
     public static final String REPEAT_SUBMIT = "REPEAT_SUBMIT";
 
+    public static final String WX_ACCESS_TOKEN = "WX_ACCESS_TOKEN";
+
     public static String getSMSCodeKey(String phone) {
         return "sms_code:" + phone;
     }

@@ -3,9 +3,11 @@ package com.infoloop.tianting.service.client;
 import com.infoloop.tianting.model.dto.WxUserDto.WxUserOpenIdDto;
 import com.infoloop.tianting.model.dto.WxUserDto.WxUserPhoneResponseDto;
 import com.infoloop.tianting.model.dto.WxUserDto.WxUserTokenDto;
+import com.infoloop.tianting.store.WxAccessTokenStore;
 import com.infoloop.tianting.utils.JsonUtil;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpEntity;
@@ -32,6 +34,8 @@ public class WxMiniProgramHttpClient {
 
     private final RestTemplate restTemplate;
 
+    private final WxAccessTokenStore wxAccessTokenStore;
+
     @Value(MINI_PROGRAM_APP_ID)
     private String appId;
 
@@ -40,7 +44,7 @@ public class WxMiniProgramHttpClient {
 
     public WxUserPhoneResponseDto getUserPhoneInfoByCode(String code) {
         try {
-            String accessToken = fetchAccessToken();
+            String accessToken = fetchStableAccessToken();
             HttpHeaders headers = new HttpHeaders();
             headers.setContentType(MediaType.APPLICATION_JSON);
             Map<String, Object> jsonDataMap = new HashMap<>();
@@ -55,6 +59,11 @@ public class WxMiniProgramHttpClient {
 
     private String fetchAccessToken() {
         log.info("Fetching WeChat access token...");
+        final var code = wxAccessTokenStore.getAccessToken();
+        if (StringUtils.isNotEmpty(code)) {
+            log.info("Using cached access token: {}", code);
+            return code;
+        }
         ResponseEntity<String> tokenResponse = restTemplate.getForEntity(TOKEN_URL, String.class, appId, appSecret);
         if (!tokenResponse.getStatusCode().is2xxSuccessful() || tokenResponse.getBody() == null) {
             log.error("Failed to fetch access token: {}", tokenResponse);
@@ -62,7 +71,36 @@ public class WxMiniProgramHttpClient {
         }
         final var wxUserTokenDto = JsonUtil.readJsonAs(tokenResponse.getBody(), WxUserTokenDto.class);
         log.info("WeChat access token received: {}", wxUserTokenDto);
-        return wxUserTokenDto.getAccess_token();
+        final var accessToken = wxUserTokenDto.getAccess_token();
+        wxAccessTokenStore.setAccessToken(accessToken);
+        return accessToken;
+    }
+
+    public String fetchStableAccessToken() {
+        log.info("Fetching WeChat access token...");
+        final var code = wxAccessTokenStore.getAccessToken();
+        if (StringUtils.isNotEmpty(code)) {
+            log.info("Using cached access token: {}", code);
+            return code;
+        }
+        String url = "https://api.weixin.qq.com/cgi-bin/stable_token";
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_JSON);
+        Map<String, String> requestBody = new HashMap<>();
+        requestBody.put("grant_type", "client_credential");
+        requestBody.put("appid", appId);
+        requestBody.put("secret", appSecret);
+        HttpEntity<Map<String, String>> request = new HttpEntity<>(requestBody, headers);
+        ResponseEntity<String> response = restTemplate.postForEntity(url, request, String.class);
+        if (!response.getStatusCode().is2xxSuccessful() || response.getBody() == null) {
+            log.error("Failed to fetch access token: {}", response);
+            throw new IllegalArgumentException("获取 access_token 失败");
+        }
+        WxUserTokenDto tokenDto = JsonUtil.readJsonAs(response.getBody(), WxUserTokenDto.class);
+        log.info("WeChat access token received: {}", tokenDto);
+        final var accessToken = tokenDto.getAccess_token();
+        wxAccessTokenStore.setAccessToken(accessToken);
+        return accessToken;
     }
 
     private WxUserPhoneResponseDto fetchPhoneNumber(String accessToken, HttpEntity<Map<String, Object>> requestEntity) {

+package com.infoloop.tianting.store;
+
+import com.infoloop.tianting.constant.RedisKeyConstants;
+import io.lettuce.core.SetArgs;
+import io.lettuce.core.api.sync.RedisCommands;
+
+public class WxAccessTokenStore {
+
+    private final RedisCommands<String, String> commands;
+
+    private final long expire;
+
+    public WxAccessTokenStore(final RedisCommands<String, String> commands, final long expire) {
+        this.commands = commands;
+        this.expire = expire;
+    }
+
+    public void setAccessToken(final String accessToken) {
+        commands.set(RedisKeyConstants.WX_ACCESS_TOKEN, accessToken, new SetArgs().ex(expire));
+    }
+
+    public String getAccessToken() {
+        return commands.get((RedisKeyConstants.WX_ACCESS_TOKEN));
+    }
+}