fix(jackson): 统一 LocalDateTime 毫秒时间戳编解码，消除 Feign/WebFlux 的 ObjectMapper 时序问题

yudao-framework/yudao-spring-boot-starter-web/src/main/java/cn/iocoder/yudao/framework/jackson/config/YudaoJacksonAutoConfiguration.java

@@ -14,34 +14,24 @@ import com.fasterxml.jackson.datatype.jsr310.ser.LocalTimeSerializer;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.boot.autoconfigure.AutoConfiguration;
 import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
+import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
 import org.springframework.context.annotation.Bean;
 
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.time.LocalTime;
 
-@AutoConfiguration
+@AutoConfiguration(after = JacksonAutoConfiguration.class)
 @Slf4j
 public class YudaoJacksonAutoConfiguration {
 
-    /**
-     * 初始化全局 JsonUtils，直接使用主 ObjectMapper
-     */
-    @Bean
-    @SuppressWarnings("InstantiationOfUtilityClass")
-    public JsonUtils jsonUtils(ObjectMapper objectMapper) {
-        JsonUtils.init(objectMapper);
-        log.info("[init][初始化 JsonUtils 成功]");
-        return new JsonUtils();
-    }
-
     /**
      * 从 Builder 源头定制（关键：使用 *ByType，避免 handledType 要求）
      */
     @Bean
     public Jackson2ObjectMapperBuilderCustomizer ldtEpochMillisCustomizer() {
         return builder -> builder
-                // Long -> String
+                // Long -> Number
                 .serializerByType(Long.class, NumberSerializer.INSTANCE)
                 .serializerByType(Long.TYPE, NumberSerializer.INSTANCE)
                 // LocalDate / LocalTime
@@ -60,7 +50,7 @@ public class YudaoJacksonAutoConfiguration {
     @Bean
     public Module timestampSupportModuleBean() {
         SimpleModule m = new SimpleModule("TimestampSupportModule");
-        // Long -> String，避免前端精度丢失
+        // Long -> Number，避免前端精度丢失
         m.addSerializer(Long.class, NumberSerializer.INSTANCE);
         m.addSerializer(Long.TYPE, NumberSerializer.INSTANCE);
         // LocalDate / LocalTime
@@ -74,4 +64,15 @@ public class YudaoJacksonAutoConfiguration {
         return m;
     }
 
+    /**
+     * 初始化全局 JsonUtils，直接使用主 ObjectMapper
+     */
+    @Bean
+    @SuppressWarnings("InstantiationOfUtilityClass")
+    public JsonUtils jsonUtils(ObjectMapper objectMapper) {
+        JsonUtils.init(objectMapper);
+        log.debug("[init][初始化 JsonUtils 成功]");
+        return new JsonUtils();
+    }
+
 }

yudao-gateway/src/main/java/cn/iocoder/yudao/gateway/jackson/GatewayJacksonAutoConfiguration.java

@@ -0,0 +1,92 @@
+package cn.iocoder.yudao.gateway.jackson;
+
+import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
+import cn.iocoder.yudao.framework.common.util.json.databind.NumberSerializer;
+import cn.iocoder.yudao.framework.common.util.json.databind.TimestampLocalDateTimeDeserializer;
+import cn.iocoder.yudao.framework.common.util.json.databind.TimestampLocalDateTimeSerializer;
+import com.fasterxml.jackson.databind.Module;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
+import com.fasterxml.jackson.datatype.jsr310.deser.LocalTimeDeserializer;
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalTimeSerializer;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
+import org.springframework.boot.web.codec.CodecCustomizer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.http.codec.json.Jackson2JsonDecoder;
+import org.springframework.http.codec.json.Jackson2JsonEncoder;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+
+@Configuration
+@Slf4j
+public class GatewayJacksonAutoConfiguration {
+
+    /**
+     * 从 Builder 源头定制（关键：使用 *ByType，避免 handledType 要求）
+     */
+    @Bean
+    public Jackson2ObjectMapperBuilderCustomizer ldtEpochMillisCustomizer() {
+        return builder -> builder
+                // Long -> Number
+                .serializerByType(Long.class, NumberSerializer.INSTANCE)
+                .serializerByType(Long.TYPE, NumberSerializer.INSTANCE)
+                // LocalDate / LocalTime
+                .serializerByType(LocalDate.class, LocalDateSerializer.INSTANCE)
+                .deserializerByType(LocalDate.class, LocalDateDeserializer.INSTANCE)
+                .serializerByType(LocalTime.class, LocalTimeSerializer.INSTANCE)
+                .deserializerByType(LocalTime.class, LocalTimeDeserializer.INSTANCE)
+                // LocalDateTime < - > EpochMillis
+                .serializerByType(LocalDateTime.class, TimestampLocalDateTimeSerializer.INSTANCE)
+                .deserializerByType(LocalDateTime.class, TimestampLocalDateTimeDeserializer.INSTANCE);
+    }
+
+    /**
+     * 以 Bean 形式暴露 Module（Boot 会自动注册到所有 ObjectMapper）
+     */
+    @Bean
+    public Module timestampSupportModuleBean() {
+        SimpleModule m = new SimpleModule("TimestampSupportModule");
+        // Long -> Number
+        m.addSerializer(Long.class, NumberSerializer.INSTANCE);
+        m.addSerializer(Long.TYPE, NumberSerializer.INSTANCE);
+        // LocalDate / LocalTime
+        m.addSerializer(LocalDate.class, LocalDateSerializer.INSTANCE);
+        m.addDeserializer(LocalDate.class, LocalDateDeserializer.INSTANCE);
+        m.addSerializer(LocalTime.class, LocalTimeSerializer.INSTANCE);
+        m.addDeserializer(LocalTime.class, LocalTimeDeserializer.INSTANCE);
+        // LocalDateTime < - > EpochMillis
+        m.addSerializer(LocalDateTime.class, TimestampLocalDateTimeSerializer.INSTANCE);
+        m.addDeserializer(LocalDateTime.class, TimestampLocalDateTimeDeserializer.INSTANCE);
+        return m;
+    }
+
+    /**
+     * 初始化全局 JsonUtils，直接使用主 ObjectMapper
+     */
+    @Bean
+    @SuppressWarnings("InstantiationOfUtilityClass")
+    public JsonUtils jsonUtils(ObjectMapper objectMapper) {
+        JsonUtils.init(objectMapper);
+        log.debug("[init][初始化 JsonUtils 成功]");
+        return new JsonUtils();
+    }
+
+    /**
+     * WebFlux 场景：强制默认编解码器使用同一个 ObjectMapper
+     */
+    @Bean
+    public CodecCustomizer unifyJackson(ObjectMapper om) {
+        return configurer -> {
+            Jackson2JsonDecoder decoder = new Jackson2JsonDecoder(om);
+            Jackson2JsonEncoder encoder = new Jackson2JsonEncoder(om);
+            configurer.defaultCodecs().jackson2JsonDecoder(decoder);
+            configurer.defaultCodecs().jackson2JsonEncoder(encoder);
+        };
+    }
+}

yudao-gateway/src/main/java/cn/iocoder/yudao/gateway/jackson/JacksonAutoConfiguration.java

@@ -1,51 +0,0 @@
-package cn.iocoder.yudao.gateway.jackson;
-
-import cn.hutool.core.collection.CollUtil;
-import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
-import cn.iocoder.yudao.framework.common.util.json.databind.NumberSerializer;
-import cn.iocoder.yudao.framework.common.util.json.databind.TimestampLocalDateTimeDeserializer;
-import cn.iocoder.yudao.framework.common.util.json.databind.TimestampLocalDateTimeSerializer;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.module.SimpleModule;
-import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
-import com.fasterxml.jackson.datatype.jsr310.deser.LocalTimeDeserializer;
-import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
-import com.fasterxml.jackson.datatype.jsr310.ser.LocalTimeSerializer;
-import lombok.extern.slf4j.Slf4j;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-
-import java.time.LocalDate;
-import java.time.LocalDateTime;
-import java.time.LocalTime;
-import java.util.List;
-
-@Configuration
-@Slf4j
-public class JacksonAutoConfiguration {
-
-    @Bean
-    public JsonUtils jsonUtils(List<ObjectMapper> objectMappers) {
-        // 1.1 创建 SimpleModule 对象
-        SimpleModule simpleModule = new SimpleModule();
-        simpleModule
-                // 新增 Long 类型序列化规则，数值超过 2^53-1，在 JS 会出现精度丢失问题，因此 Long 自动序列化为字符串类型
-                .addSerializer(Long.class, NumberSerializer.INSTANCE)
-                .addSerializer(Long.TYPE, NumberSerializer.INSTANCE)
-                .addSerializer(LocalDate.class, LocalDateSerializer.INSTANCE)
-                .addDeserializer(LocalDate.class, LocalDateDeserializer.INSTANCE)
-                .addSerializer(LocalTime.class, LocalTimeSerializer.INSTANCE)
-                .addDeserializer(LocalTime.class, LocalTimeDeserializer.INSTANCE)
-                // 新增 LocalDateTime 序列化、反序列化规则，使用 Long 时间戳
-                .addSerializer(LocalDateTime.class, TimestampLocalDateTimeSerializer.INSTANCE)
-                .addDeserializer(LocalDateTime.class, TimestampLocalDateTimeDeserializer.INSTANCE);
-        // 1.2 注册到 objectMapper
-        objectMappers.forEach(objectMapper -> objectMapper.registerModule(simpleModule));
-
-        // 2. 设置 objectMapper 到 JsonUtils
-        JsonUtils.init(CollUtil.getFirst(objectMappers));
-        log.info("[init][初始化 JsonUtils 成功]");
-        return new JsonUtils();
-    }
-
-}