feat：【框架】TimestampLocalDateTimeSerializer 优化下代码格式

yudao-framework/yudao-common/src/main/java/cn/iocoder/yudao/framework/common/util/json/databind/TimestampLocalDateTimeSerializer.java

@@ -1,11 +1,14 @@
 package cn.iocoder.yudao.framework.common.util.json.databind;
 
+import cn.hutool.core.util.ObjUtil;
 import cn.hutool.core.util.ReflectUtil;
+import cn.hutool.core.util.StrUtil;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.databind.JsonSerializer;
 import com.fasterxml.jackson.databind.SerializerProvider;
+import lombok.extern.slf4j.Slf4j;
 
 import java.io.IOException;
 import java.lang.reflect.Field;
@@ -21,28 +24,13 @@ import java.util.concurrent.ConcurrentHashMap;
  *
  * @author 老五
  */
+@Slf4j
 public class TimestampLocalDateTimeSerializer extends JsonSerializer<LocalDateTime> {
 
     public static final TimestampLocalDateTimeSerializer INSTANCE = new TimestampLocalDateTimeSerializer();
 
     private static final Map<Class<?>, Map<String, Field>> FIELD_CACHE = new ConcurrentHashMap<>();
 
-    private Map<String, Field> buildFieldMap(Class<?> clazz) {
-        Map<String, Field> fieldMap = new HashMap<>();
-        for (Field field : ReflectUtil.getFields(clazz)) {
-            String fieldName = field.getName();
-            JsonProperty jsonProperty = field.getAnnotation(JsonProperty.class);
-            if (jsonProperty != null) {
-                String value = jsonProperty.value();
-                if (!value.isEmpty() && !"\u0000".equals(value)) {
-                    fieldName = value;
-                }
-            }
-            fieldMap.put(fieldName, field);
-        }
-        return fieldMap;
-    }
-
     @Override
     public void serialize(LocalDateTime value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
         // 情况一：有 JsonFormat 自定义注解，则使用它。https://github.com/YunaiV/ruoyi-vue-pro/pull/1019
@@ -53,13 +41,16 @@ public class TimestampLocalDateTimeSerializer extends JsonSerializer<LocalDateTi
                 Class<?> clazz = currentValue.getClass();
                 Map<String, Field> fieldMap = FIELD_CACHE.computeIfAbsent(clazz, this::buildFieldMap);
                 Field field = fieldMap.get(fieldName);
+                // 进一步修复：https://gitee.com/zhijiantianya/ruoyi-vue-pro/pulls/1480
                 if (field != null && field.isAnnotationPresent(JsonFormat.class)) {
                     JsonFormat jsonFormat = field.getAnnotation(JsonFormat.class);
                     try {
                         DateTimeFormatter formatter = DateTimeFormatter.ofPattern(jsonFormat.pattern());
                         gen.writeString(formatter.format(value));
                         return;
-                    } catch (Exception ignored) {
+                    } catch (Exception ex) {
+                        log.warn("[serialize][({}#{}) 使用 JsonFormat pattern 失败，尝试使用默认的 Long 时间戳]",
+                                clazz.getName(), fieldName, ex);
                     }
                 }
             }
@@ -69,4 +60,26 @@ public class TimestampLocalDateTimeSerializer extends JsonSerializer<LocalDateTi
         gen.writeNumber(value.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli());
     }
 
+    /**
+     * 构建字段映射（缓存）
+     *
+     * @param clazz 类
+     * @return 字段映射
+     */
+    private Map<String, Field> buildFieldMap(Class<?> clazz) {
+        Map<String, Field> fieldMap = new HashMap<>();
+        for (Field field : ReflectUtil.getFields(clazz)) {
+            String fieldName = field.getName();
+            JsonProperty jsonProperty = field.getAnnotation(JsonProperty.class);
+            if (jsonProperty != null) {
+                String value = jsonProperty.value();
+                if (StrUtil.isNotEmpty(value) && ObjUtil.notEqual("\u0000", value)) {
+                    fieldName = value;
+                }
+            }
+            fieldMap.put(fieldName, field);
+        }
+        return fieldMap;
+    }
+
 }