优化题目代码

server/controllers/exam.go

@@ -3,6 +3,8 @@ package controllers
 import (
 	"encoding/json"
 	"strconv"
+	"strings"
+	"regexp"
 
 	"server/models"
 	"server/services"
@@ -14,6 +16,65 @@ type ExamQuestionController struct {
 	beego.Controller
 }
 
+// normalizeText removes HTML tags, converts   to space, and collapses whitespace
+func normalizeText(s string) string {
+    str := strings.TrimSpace(s)
+    if str == "" {
+        return ""
+    }
+    // remove HTML tags
+    re := regexp.MustCompile("<[^>]*>")
+    str = re.ReplaceAllString(str, "")
+    // decode common entities
+    str = strings.ReplaceAll(str, "&nbsp;", " ")
+    str = strings.ReplaceAll(str, "&#160;", " ")
+    // collapse whitespace
+    reSpace := regexp.MustCompile(`\s+`)
+    str = reSpace.ReplaceAllString(str, " ")
+    return strings.TrimSpace(str)
+}
+
+// computeMatchRate returns a simple similarity percentage between two strings based on
+// position-wise identical characters over the max length, rounded to integer 0-100.
+func computeMatchRate(a, b string) int {
+    s1 := normalizeText(a)
+    s2 := normalizeText(b)
+	if s1 == "" && s2 == "" {
+		return 100
+	}
+	maxLen := len([]rune(s1))
+	if l := len([]rune(s2)); l > maxLen {
+		maxLen = l
+	}
+	if maxLen == 0 {
+		return 0
+	}
+	r1 := []rune(s1)
+	r2 := []rune(s2)
+	same := 0
+	for i := 0; i < maxLen; i++ {
+		var c1, c2 rune
+		if i < len(r1) {
+			c1 = r1[i]
+		}
+		if i < len(r2) {
+			c2 = r2[i]
+		}
+		if c1 != 0 && c2 != 0 && c1 == c2 {
+			same++
+		}
+	}
+	// round to nearest int
+	rate := int(float64(same)/float64(maxLen)*100.0 + 0.5)
+	if rate < 0 {
+		return 0
+	}
+	if rate > 100 {
+		return 100
+	}
+	return rate
+}
+
 type ExamQuestionBankController struct {
 	beego.Controller
 }
@@ -22,9 +83,10 @@ type ExamQuestionBankController struct {
 // @router /exam-questions [get]
 func (c *ExamQuestionController) GetList() {
 	tenantId, _ := c.Ctx.Input.GetData("tenantId").(int)
-	keyword := c.GetString("keyword")
+    keyword := c.GetString("keyword")
 	typeStr := c.GetString("type")
 	bankId, _ := c.GetInt64("bank_id", 0)
+	minRate, _ := c.GetInt("min_rate", 0)
 
 	var qtype *int8
 	if typeStr != "" {
@@ -37,32 +99,62 @@ func (c *ExamQuestionController) GetList() {
 	page, _ := c.GetInt("page", 1)
 	pageSize, _ := c.GetInt("pageSize", 10)
 
-	list, total, err := services.GetExamQuestions(services.QuestionListParams{
-		TenantId:     tenantId,
-		Keyword:      keyword,
-		QuestionType: qtype,
-		BankId:       bankId,
-		Page:         page,
-		PageSize:     pageSize,
-	})
+    // use normalized keyword for DB searching to improve hit rate when editor HTML is posted
+    normKeyword := normalizeText(keyword)
+    list, total, err := services.GetExamQuestions(services.QuestionListParams{
+        TenantId:     tenantId,
+        Keyword:      normKeyword,
+        QuestionType: qtype,
+        BankId:       bankId,
+        Page:         page,
+        PageSize:     pageSize,
+    })
 	if err != nil {
 		c.Data["json"] = map[string]interface{}{"code": 1, "message": "获取试题列表失败: " + err.Error(), "data": nil}
 		c.ServeJSON()
 		return
 	}
+    // 当启用相似度筛选且按关键字无结果时，回退到不带关键字的最近记录中做相似度匹配
+    if minRate > 0 && strings.TrimSpace(normKeyword) != "" && len(list) == 0 {
+        fbPageSize := 50
+        fbList, _, fbErr := services.GetExamQuestions(services.QuestionListParams{
+            TenantId: tenantId,
+            Keyword:  "",
+            BankId:   bankId,
+            Page:     1,
+            PageSize: fbPageSize,
+        })
+        if fbErr == nil {
+            list = fbList
+        }
+    }
 
 	items := make([]map[string]interface{}, 0, len(list))
+    currentTitle := normalizeText(keyword)
 	for _, q := range list {
 		if q == nil {
 			continue
 		}
-		items = append(items, map[string]interface{}{
+		// 可选相似度计算与过滤
+		var rate *int
+		if currentTitle != "" {
+			v := computeMatchRate(currentTitle, q.QuestionTitle)
+			rate = &v
+			if minRate > 0 && v < minRate {
+				continue
+			}
+		}
+		item := map[string]interface{}{
 			"id":             q.Id,
 			"tenant_id":      q.TenantId,
 			"question_type":  q.QuestionType,
 			"question_title": q.QuestionTitle,
 			"score":          q.Score,
-		})
+		}
+		if rate != nil {
+			item["_match_rate"] = *rate
+		}
+		items = append(items, item)
 	}
 
 	c.Data["json"] = map[string]interface{}{
@@ -160,7 +252,7 @@ func (c *ExamQuestionController) BatchCreate() {
 	tenantId, _ := c.Ctx.Input.GetData("tenantId").(int)
 	var payload struct {
 		BankId int64 `json:"bank_id"`
-		Items []struct {
+		Items  []struct {
 			QuestionTitle    string              `json:"question_title"`
 			QuestionType     int8                `json:"question_type"`
 			Score            float64             `json:"score"`