diff --git a/service/src/main/java/cn/qihangerp/service/external/pdd/ExternalPddConfiguration.java b/service/src/main/java/cn/qihangerp/service/external/pdd/ExternalPddConfiguration.java
index e74ccb95..5f549416 100644
--- a/service/src/main/java/cn/qihangerp/service/external/pdd/ExternalPddConfiguration.java
+++ b/service/src/main/java/cn/qihangerp/service/external/pdd/ExternalPddConfiguration.java
@@ -1,16 +1,7 @@
 package cn.qihangerp.service.external.pdd;
 
-import com.alibaba.fastjson2.JSON;
-import com.alibaba.fastjson2.JSONException;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
-import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.core.convert.converter.Converter;
-
-import java.util.ArrayList;
-import java.util.List;
 
 /**
  * @author guochengyu
@@ -18,28 +9,4 @@ import java.util.List;
 @Configuration
 @EnableConfigurationProperties(ExternalPddProperties.class)
 public class ExternalPddConfiguration {
-
-    private static final Logger log = LoggerFactory.getLogger(ExternalPddConfiguration.class);
-
-    /**
-     * K8s/Helm 常把 {@code sku-overrides: []} 落成环境变量 {@code EXTERNAL_PDD_SKU_OVERRIDES=[]}（字符串），
-     * 默认 Binder 无法转为 {@link List}；此处兼容 {@code []}、空串及 JSON 数组。
-     */
-    @Bean
-    public Converter<String, List<ExternalPddProperties.PddSkuOverride>> externalPddSkuOverridesStringConverter() {
-        return source -> {
-            String s = source == null ? "" : source.trim();
-            if (s.isEmpty() || "[]".equals(s)) {
-                return new ArrayList<>();
-            }
-            try {
-                List<ExternalPddProperties.PddSkuOverride> list =
-                        JSON.parseArray(s, ExternalPddProperties.PddSkuOverride.class);
-                return list != null ? list : new ArrayList<>();
-            } catch (JSONException e) {
-                log.warn("external.pdd.sku-overrides 环境变量/配置非合法 JSON，已按空列表处理: {}", e.getMessage());
-                return new ArrayList<>();
-            }
-        };
-    }
 }
diff --git a/service/src/main/java/cn/qihangerp/service/external/pdd/ExternalPddSkuOverridesStringConverter.java b/service/src/main/java/cn/qihangerp/service/external/pdd/ExternalPddSkuOverridesStringConverter.java
new file mode 100644
index 00000000..8dad5783
--- /dev/null
+++ b/service/src/main/java/cn/qihangerp/service/external/pdd/ExternalPddSkuOverridesStringConverter.java
@@ -0,0 +1,40 @@
+package cn.qihangerp.service.external.pdd;
+
+import com.alibaba.fastjson2.JSON;
+import com.alibaba.fastjson2.JSONException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.core.convert.converter.Converter;
+import org.springframework.stereotype.Component;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * 将配置源中的字符串（含环境变量 {@code EXTERNAL_PDD_SKU_OVERRIDES=[]}）转为 {@code sku-overrides} 列表。
+ * <p>
+ * 必须实现为<strong>带泛型的具体类</strong>，不能用法方法引用/lambda 注册为 Bean，否则 Spring MVC
+ * {@code mvcConversionService} 无法解析泛型会启动失败。
+ */
+@Component
+public class ExternalPddSkuOverridesStringConverter
+        implements Converter<String, List<ExternalPddProperties.PddSkuOverride>> {
+
+    private static final Logger log = LoggerFactory.getLogger(ExternalPddSkuOverridesStringConverter.class);
+
+    @Override
+    public List<ExternalPddProperties.PddSkuOverride> convert(String source) {
+        String s = source == null ? "" : source.trim();
+        if (s.isEmpty() || "[]".equals(s)) {
+            return new ArrayList<>();
+        }
+        try {
+            List<ExternalPddProperties.PddSkuOverride> list =
+                    JSON.parseArray(s, ExternalPddProperties.PddSkuOverride.class);
+            return list != null ? list : new ArrayList<>();
+        } catch (JSONException e) {
+            log.warn("external.pdd.sku-overrides 环境变量/配置非合法 JSON，已按空列表处理: {}", e.getMessage());
+            return new ArrayList<>();
+        }
+    }
+}