diff --git a/api/graphql.go b/api/graphql.go
index 2b1651f..cb02e18 100644
--- a/api/graphql.go
+++ b/api/graphql.go
@@ -290,70 +290,34 @@ func NewSchema(config Config) (graphql.Schema, error) {
 				var query strings.Builder
 				query.WriteString(fmt.Sprintf("SELECT %s FROM web_images WHERE %s LIMIT %d OFFSET %s", fields_str, where_str, first, after))
 
-				var images []Image
+				var images ImageList
 				if err := connection.Select(&images, query.String()); err != nil {
 					fmt.Println("获取图像列表失败", err)
 					return nil, err
 				}
 
 				// 获取用户信息(如果图像列表不为空且请求字段中包含user)
-				if len(images) > 0 && strings.Contains(fields_str, "user_id") {
-					// 取到所有的用户ID, 去除重复
-					user_ids := make(map[int]bool)
-					for _, image := range images {
-						user_ids[image.UserID] = true
-					}
-					// map 转换为数组
-					uniqueIds := make([]int, 0, len(user_ids))
-					for id := range user_ids {
-						uniqueIds = append(uniqueIds, id)
-					}
-					// 合并为以逗号分隔的字符串
-					user_ids_str := strings.Trim(strings.Join(strings.Fields(fmt.Sprint(uniqueIds)), ","), "[]")
-					// 查询用户信息
+				if len(images) > 0 && strings.Contains(fields_str, "user") {
+					user_ids_str := images.ToAllUserID().ToString()
 					var users []User
 					if err := connection.Select(&users, fmt.Sprintf("SELECT id,user_name,avatar,rank,create_time,update_time FROM web_member WHERE id IN (%s)", user_ids_str)); err != nil {
 						fmt.Println("获取用户列表失败", err)
 						return nil, err
 					}
 					// 将用户信息与图像信息关联
-					for i, image := range images {
-						for _, user := range users {
-							if image.UserID == user.ID {
-								images[i].User = user
-							}
-						}
-					}
+					images.SetUser(users)
 				}
 
 				// 获取文章信息(如果图像列表不为空且请求字段中包含article)
-				if len(images) > 0 && strings.Contains(fields_str, "article_id") {
-					// 取到所有的文章ID, 去除重复
-					article_ids := make(map[int]bool)
-					for _, image := range images {
-						article_ids[image.ArticleID] = true
-					}
-					// map 转换为数组
-					uniqueIds := make([]int, 0, len(article_ids))
-					for id := range article_ids {
-						uniqueIds = append(uniqueIds, id)
-					}
-					// 合并为以逗号分隔的字符串
-					article_ids_str := strings.Trim(strings.Join(strings.Fields(fmt.Sprint(uniqueIds)), ","), "[]")
-					// 查询文章信息
+				if len(images) > 0 && strings.Contains(fields_str, "article") {
+					article_ids_str := images.ToAllArticleID().ToString()
 					var articles []Article
 					if err := connection.Select(&articles, fmt.Sprintf("SELECT id,title,tags,create_time,update_time FROM web_article WHERE id IN (%s)", article_ids_str)); err != nil {
 						fmt.Println("获取文章列表失败", err)
 						return nil, err
 					}
 					// 将文章信息与图像信息关联
-					for i, image := range images {
-						for _, article := range articles {
-							if image.ArticleID == article.ID {
-								images[i].Article = article
-							}
-						}
-					}
+					images.SetArticle(articles)
 				}
 
 				return map[string]interface{}{
diff --git a/api/struct.go b/api/struct.go
index 0ac851e..f603b43 100644
--- a/api/struct.go
+++ b/api/struct.go
@@ -2,9 +2,66 @@ package api
 
 import (
 	"encoding/json"
+	"fmt"
+	"strings"
 	"time"
 )
 
+type IDS []int
+
+// 合并为以逗号分隔的字符串
+func (ids IDS) ToString() (str string) {
+	return strings.Trim(strings.Join(strings.Fields(fmt.Sprint(ids)), ","), "[]")
+}
+
+type ImageList []Image
+
+// 取到所有的文章ID, 去除重复
+func (images *ImageList) ToAllArticleID() (uniqueIds IDS) {
+	article_ids := make(map[int]bool)
+	for _, image := range *images {
+		article_ids[image.ArticleID] = true
+	}
+	for id := range article_ids {
+		uniqueIds = append(uniqueIds, id)
+	}
+	return uniqueIds
+}
+
+// 取到所有的用户ID, 去除重复
+func (images *ImageList) ToAllUserID() (uniqueIds IDS) {
+	user_ids := make(map[int]bool)
+	for _, image := range *images {
+		user_ids[image.UserID] = true
+	}
+	for id := range user_ids {
+		uniqueIds = append(uniqueIds, id)
+	}
+	return uniqueIds
+}
+
+// 为每个图像设置用户信息
+func (images *ImageList) SetUser(userList []User) {
+	for i, image := range *images {
+		for _, user := range userList {
+			if image.UserID == user.ID {
+				(*images)[i].User = user
+			}
+		}
+	}
+}
+
+// 为每个图像设置文章信息
+func (images *ImageList) SetArticle(articleList []Article) {
+	for i, image := range *images {
+		for _, article := range articleList {
+			if image.ArticleID == article.ID {
+				(*images)[i].Article = article
+			}
+		}
+	}
+}
+
 type Image struct {
 	ID                   int       `json:"id"                      db:"id"`
 	Width                int       `json:"width"                   db:"width"`