Merge branch 'master' of gitee.com:youlaiorg/youlai-boot

# Conflicts:
#	src/main/java/com/youlai/boot/config/SecurityConfig.java
#	src/main/java/com/youlai/boot/config/property/TencentSmsProperties.java
#	src/main/java/com/youlai/boot/support/sms/impl/AliyunSmsServiceImpl.java
#	src/main/java/com/youlai/boot/support/sms/impl/TencentSmsService.java
#	src/main/resources/application-dev.yml
#	src/main/resources/application-prod.yml

src/main/java/com/youlai/boot/config/JacksonConfig.java

@@ -0,0 +1,49 @@
+package com.youlai.boot.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import tools.jackson.databind.PropertyNamingStrategies;
+import tools.jackson.databind.cfg.DateTimeFeature;
+import tools.jackson.databind.json.JsonMapper;
+import tools.jackson.databind.module.SimpleModule;
+import tools.jackson.databind.ser.std.ToStringSerializer;
+
+import java.math.BigInteger;
+import java.text.SimpleDateFormat;
+import java.util.TimeZone;
+
+/**
+ * Jackson 全局序列化配置
+ *
+ * <p>本项目的统一序列化策略：
+ * <br>- 统一时区 GMT+8 统一日期格式 yyyy-MM-dd HH:mm:ss
+ * <br>- Long/BigInteger 序列化为字符串，避免前端精度丢失
+ * <br>- 禁用 WRITE_DATES_AS_TIMESTAMPS，避免日期输出为时间戳</p>
+ * 
+ * @author Ray.Hao
+ * @since 2026/1/12
+ */
+@Configuration
+public class JacksonConfig {
+
+    /**
+     * 全局 JsonMapper
+     *
+     * <p>由 Spring Boot 自动装配到 Jackson 相关的 HttpMessageConverter 中，作为全局 JSON 序列化/反序列化
+     * 行为的唯一入口。</p>
+     */
+    @Bean
+    public JsonMapper objectMapper() {
+        return JsonMapper.builder()
+                .disable(DateTimeFeature.WRITE_DATES_AS_TIMESTAMPS)
+                .defaultDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"))
+                .defaultTimeZone(TimeZone.getTimeZone("GMT+8"))
+                .addModule(new SimpleModule()
+                        .addSerializer(Long.class, ToStringSerializer.instance)
+                        .addSerializer(BigInteger.class, ToStringSerializer.instance)
+                )
+//                .propertyNamingStrategy(PropertyNamingStrategies.SNAKE_CASE)
+                .build();
+    }
+
+}