优化拼接查询

This commit is contained in:
2023-11-13 19:01:49 +08:00
parent e938c49fd5
commit 612e3cc4e6
3 changed files with 25 additions and 102 deletions

View File

@@ -208,6 +208,12 @@ func main() {
// 屏蔽 /favicon.ico
http.HandleFunc("/favicon.ico", func(w http.ResponseWriter, r *http.Request) {
defer LogComponent(time.Now().UnixNano(), r) // 最后打印日志
http.Error(w, "Not Found", http.StatusNotFound)
})
http.HandleFunc("/api/default", func(w http.ResponseWriter, r *http.Request) {
defer LogComponent(time.Now().UnixNano(), r) // 最后打印日志
http.Error(w, "Not Found", http.StatusNotFound)
})
@@ -264,7 +270,7 @@ func main() {
})
// 获取图片信息列表(分页)
http.HandleFunc("/images", func(w http.ResponseWriter, r *http.Request) {
http.HandleFunc("/api/images", func(w http.ResponseWriter, r *http.Request) {
defer LogComponent(time.Now().UnixNano(), r) // 最后打印日志
// 私域: (自己的图片, 自己的文章, 自己的精选集, 点赞收藏精选集)
@@ -284,19 +290,17 @@ func main() {
}
// 拼接查询条件, 超级简洁写法
conditions := ""
if authors := QueryConditions("authors"); len(authors) > 0 {
conditions += fmt.Sprintf(" AND author IN (%s)", strings.Join(authors, ","))
}
if tags := QueryConditions("tags"); len(tags) > 0 {
conditions += fmt.Sprintf(" AND tag IN (%s)", strings.Join(tags, ","))
}
if categories := QueryConditions("categories"); len(categories) > 0 {
conditions += fmt.Sprintf(" AND categorie IN (%s)", strings.Join(categories, ","))
}
if sets := QueryConditions("sets"); len(sets) > 0 {
conditions += fmt.Sprintf(" AND sets IN (%s)", strings.Join(sets, ","))
var addCondition = func(conditions *strings.Builder, key, column string) {
if values := QueryConditions(key); len(values) > 0 {
conditions.WriteString(fmt.Sprintf(" AND %s IN (%s)", column, strings.Join(values, ",")))
}
}
var conditions strings.Builder
addCondition(&conditions, "authors", "author")
addCondition(&conditions, "tags", "tag")
addCondition(&conditions, "categories", "categorie")
addCondition(&conditions, "sets", "sets")
var ids []int64
if similar := QueryConditions("similar"); len(similar) > 0 {
id, err := strconv.Atoi(strings.Trim(similar[0], "'"))
@@ -311,19 +315,20 @@ func main() {
idsStr[i] = strconv.FormatInt(v, 10)
}
if len(idsStr) > 0 {
conditions += fmt.Sprintf(" AND id IN (%s)", strings.Join(idsStr, ",")) // 拼接查询条件
conditions.WriteString(fmt.Sprintf(" AND id IN (%s)", strings.Join(idsStr, ","))) // 拼接查询条件
}
}
if conditions != "" {
conditions = strings.Replace(conditions, " AND", "", 1) // 去掉第一个 AND
conditions = " WHERE" + conditions // 拼接 WHERE
if conditions.Len() > 0 {
conditionsStr := conditions.String()
conditionsStr = strings.Replace(conditionsStr, " AND", "", 1) // 去掉第一个 AND
conditionsStr = " WHERE" + conditionsStr // 拼接 WHERE
}
// 获取图片列表
var images ListView
var image_list []Image
images.Page, images.PageSize = stringToInt(r.URL.Query().Get("page"), 1), stringToInt(r.URL.Query().Get("pageSize"), 10)
rows, err := mysqlConnection.Database.Query("SELECT id, width, height, content, update_time, create_time, user_id, article_id, article_category_top_id, praise_count, collect_count FROM web_images"+conditions+" LIMIT ?, ?", (images.Page-1)*images.PageSize, images.PageSize)
rows, err := mysqlConnection.Database.Query("SELECT id, width, height, content, update_time, create_time, user_id, article_id, article_category_top_id, praise_count, collect_count FROM web_images"+conditions.String()+" LIMIT ?, ?", (images.Page-1)*images.PageSize, images.PageSize)
if err != nil {
log.Println("获取图片列表失败", err)
http.Error(w, err.Error(), http.StatusBadRequest)
@@ -431,7 +436,7 @@ func main() {
}
// 获取总数
err = mysqlConnection.Database.QueryRow("SELECT COUNT(*) FROM web_images" + conditions).Scan(&images.Total)
err = mysqlConnection.Database.QueryRow("SELECT COUNT(*) FROM web_images" + conditions.String()).Scan(&images.Total)
if err != nil {
log.Println("获取图片总数失败", err)
http.Error(w, err.Error(), http.StatusBadRequest)
@@ -614,7 +619,7 @@ func main() {
return
}
fmt.Println("safeParam", safeParam)
//fmt.Println("safeParam", safeParam)
urls, err := models.GetVideoM3U8(safeParam)
if err != nil {
log.Println("获取视频链接失败", err)