refactor(time): 优化时间格式化和反序列化

- 修改 CmsWebsiteServiceImplHelper 中 createTime 的处理方式，使用 formatter 进行格式化
- 在 JacksonConfig 中配置自定义的 ObjectMapper，确保 LocalDateTime 使用指定格式（yyyy-MM-dd HH:mm:ss）
- 添加自定义的 JavaTimeModule，配置 LocalDateTime 的序列化和反序列化格式
- 禁用将日期写为时间戳，忽略未知属性，并允许空字符串作为 null 对象

src/main/java/com/gxwebsoft/cms/service/impl/CmsWebsiteServiceImplHelper.java

@@ -62,7 +62,9 @@ public class CmsWebsiteServiceImplHelper {
     vo.setDomain(website.getDomain());
     vo.setRunning(website.getRunning());
     vo.setVersion(website.getVersion());
-    vo.setCreateTime(String.valueOf(website.getCreateTime()));
+    if (website.getCreateTime() != null) {
+      vo.setCreateTime(website.getCreateTime().format(formatter));
+    }
 
     // 时间字段 - 格式化为字符串
     if (website.getExpirationTime() != null) {

src/main/java/com/gxwebsoft/common/core/config/JacksonConfig.java

@@ -1,13 +1,22 @@
 package com.gxwebsoft.common.core.config;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
+import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
 
 /**
  * Jackson配置类
- * 确保JSR310模块被正确注册
+ * 确保JSR310模块被正确注册到ObjectMapper中，并配置自定义时间格式
  *
  * @author WebSoft
  * @since 2025-01-12
@@ -15,12 +24,51 @@ import org.springframework.context.annotation.Configuration;
 @Configuration
 public class JacksonConfig {
 
+    private static final DateTimeFormatter DATE_TIME_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
+
+    /**
+     * 配置ObjectMapper，确保JSR310模块被正确注册并设置自定义时间格式
+     */
+    @Bean
+    @Primary
+    @ConditionalOnMissingBean
+    public ObjectMapper objectMapper() {
+        ObjectMapper mapper = new ObjectMapper();
+        
+        // 创建自定义的JavaTimeModule
+        JavaTimeModule javaTimeModule = new JavaTimeModule();
+        
+        // 配置LocalDateTime的序列化和反序列化格式
+        javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DATE_TIME_FORMATTER));
+        javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DATE_TIME_FORMATTER));
+        
+        // 注册自定义的JSR310模块
+        mapper.registerModule(javaTimeModule);
+        
+        // 禁用将日期写为时间戳
+        mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+        
+        // 忽略未知属性
+        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+        
+        // 允许空字符串作为null对象
+        mapper.configure(DeserializationFeature.ACCEPT_EMPTY_STRING_AS_NULL_OBJECT, true);
+        
+        return mapper;
+    }
+
     /**
-     * 确保JavaTimeModule被注册
+     * 确保JavaTimeModule被注册（保留原有Bean）
      */
     @Bean
     @ConditionalOnMissingBean
     public JavaTimeModule javaTimeModule() {
-        return new JavaTimeModule();
+        JavaTimeModule module = new JavaTimeModule();
+        
+        // 配置LocalDateTime的序列化和反序列化格式
+        module.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DATE_TIME_FORMATTER));
+        module.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DATE_TIME_FORMATTER));
+        
+        return module;
     }
 }