tj

RuoYi-Vue/ruoyi-system/src/main/java/com/ruoyi/novel/controller/CategoryController.java

 //    }
     @GetMapping("/tree")
     public AjaxResult tree() {
-        List<NovelCategory> categories = categoryService.getCategoryTree();
-        return AjaxResult.success(categories);
+//        List<NovelCategory> categories = categoryService.getCategoryTree();
+//        logger.info("成功获取分类树，数量: {}", categories.size());
+//        return AjaxResult.success(categories);
+
+        try {
+            List<NovelCategory> categories = categoryService.getCategoryTree();
+            logger.info("成功获取分类树，数量: {}", categories.size());
+            return AjaxResult.success(categories);
+        } catch (Exception e) {
+            logger.error("获取分类树失败", e);
+            return AjaxResult.error("获取分类失败");
+        }
     }
     // 获取分类树
 //    @GetMapping("/tree")

RuoYi-Vue/ruoyi-system/src/main/java/com/ruoyi/novel/domain/NovelCategory.java

 import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.annotation.TableName;
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import lombok.Data;
 
     private String templateFilter;
     private String link;
     @TableField("create_time")
-    @JsonInclude(JsonInclude.Include.NON_NULL) // 忽略null字段
+    @JsonInclude(JsonInclude.Include.NON_NULL)
     private Integer createTime;
+    public Integer getCreateTime() {
+        return createTime;
+    }
     @TableField("update_time")
+    @JsonInclude(JsonInclude.Include.NON_NULL)
     private Integer updateTime;
     private Integer status;
     private Integer type;
     private List<NovelCategory> children;
 
     // 获取格式化创建时间
+//    public String getFormattedCreateTime() {
+//        return new SimpleDateFormat("yyyy-MM-dd").format(new Date(createTime * 1000L));
+//    }
+    // 安全的格式化方法
     public String getFormattedCreateTime() {
-        return new SimpleDateFormat("yyyy-MM-dd").format(new Date(createTime * 1000L));
+        return createTime != null ? formatTime(createTime) : "";
+    }
+
+    // 防止直接访问可能为null的原始字段
+    @JsonIgnore
+    public Integer getRawCreateTime() {
+        return createTime;
+    }
+    // 或者完全移除这个方法，如果不需要格式化输出
+    private String formatTime(Integer timestamp) {
+        // 实现你的时间格式化逻辑
+        return String.valueOf(timestamp);
     }
 }