优化AI评分系统和答题体验
后端改进： - 简答题AI评分改为必须成功，失败则返回错误提示 - 实现AI评分重试机制，最多重试5次，采用指数退避策略 - AI评分温度设置为0，确保评分结果更加一致和可预测 - 优化AI评分提示词，要求严格按照标准答案评分 - 添加详细的评分标准（85-100分/60-84分/40-59分/0-39分） - 强化系统消息，要求评分客观、一致、可预测 前端改进： - 添加自动下一题功能，答对后自动跳转（默认开启） - 支持配置自动跳转延迟时间（1-10秒，默认2秒） - 使用Popover组件优化设置UI，保持界面简洁 - 设置保存到localStorage，支持跨会话持久化 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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@ -175,30 +175,62 @@ func SubmitPracticeAnswer(c *gin.Context) {
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// AI评分结果（仅简答题）
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var aiGrading *models.AIGrading = nil
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// 对简答题使用AI评分
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// 对简答题使用AI评分（必须成功，失败重试最多5次）
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if question.Type == "short-answer" {
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// 获取用户答案字符串
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userAnswerStr, ok := submit.Answer.(string)
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if ok {
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// 获取标准答案字符串
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standardAnswerStr, ok := correctAnswer.(string)
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if ok {
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// 调用AI评分服务
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aiService := services.NewAIGradingService()
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aiResult, err := aiService.GradeShortAnswer(question.Question, standardAnswerStr, userAnswerStr)
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if err != nil {
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// AI评分失败时记录日志，但不影响主流程
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log.Printf("AI评分失败: %v", err)
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} else {
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// 使用AI的评分结果
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correct = aiResult.IsCorrect
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aiGrading = &models.AIGrading{
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Score: aiResult.Score,
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Feedback: aiResult.Feedback,
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Suggestion: aiResult.Suggestion,
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}
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}
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if !ok {
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c.JSON(http.StatusBadRequest, gin.H{
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"success": false,
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"message": "简答题答案格式错误",
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})
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return
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}
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// 获取标准答案字符串
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standardAnswerStr, ok := correctAnswer.(string)
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if !ok {
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c.JSON(http.StatusInternalServerError, gin.H{
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"success": false,
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"message": "题目答案格式错误",
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})
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return
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}
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// 调用AI评分服务（带重试机制）
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aiService := services.NewAIGradingService()
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var aiResult *services.AIGradingResult
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var err error
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maxRetries := 5
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for attempt := 1; attempt <= maxRetries; attempt++ {
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log.Printf("AI评分尝试第 %d 次 (题目ID: %d)", attempt, question.ID)
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aiResult, err = aiService.GradeShortAnswer(question.Question, standardAnswerStr, userAnswerStr)
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if err == nil {
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log.Printf("AI评分成功 (题目ID: %d, 得分: %.1f)", question.ID, aiResult.Score)
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break
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}
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log.Printf("AI评分失败 (第 %d 次尝试): %v", attempt, err)
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if attempt < maxRetries {
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// 等待一小段时间后重试（指数退避）
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time.Sleep(time.Second * time.Duration(attempt))
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}
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}
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{
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"success": false,
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"message": fmt.Sprintf("AI评分服务暂时不可用，已重试%d次，请稍后再试", maxRetries),
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})
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return
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}
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// 使用AI的评分结果
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correct = aiResult.IsCorrect
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aiGrading = &models.AIGrading{
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Score: aiResult.Score,
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Feedback: aiResult.Feedback,
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Suggestion: aiResult.Suggestion,
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}
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}
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@ -47,8 +47,8 @@ type AIGradingResult struct {
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// standardAnswer: 标准答案
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// userAnswer: 用户答案
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func (s *AIGradingService) GradeShortAnswer(question, standardAnswer, userAnswer string) (*AIGradingResult, error) {
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// 构建评分提示词
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prompt := fmt.Sprintf(`你是一位专业的阅卷老师，请对以下简答题进行评分。
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// 构建评分提示词（严格评分模式）
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prompt := fmt.Sprintf(`你是一位严格的阅卷老师，请严格按照标准答案对以下简答题进行评分。
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题目：%s
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@ -56,21 +56,29 @@ func (s *AIGradingService) GradeShortAnswer(question, standardAnswer, userAnswer
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学生答案：%s
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请按照以下要求进行评分：
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1. 给出一个0-100的分数
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2. 判断答案是否正确（60分及以上为正确）
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3. 给出简短的评语（不超过50字）
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4. 如果答案不完善，给出改进建议（不超过50字，如果答案很好可以为空）
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评分标准（请严格遵守）：
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1. 必须与标准答案进行逐项对比
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2. 答案要点完全覆盖标准答案且表述准确的，给85-100分
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3. 答案要点基本覆盖但有缺漏或表述不够准确的，给60-84分
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4. 答案要点缺失较多或有明显错误的，给40-59分
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5. 答案完全错误或离题的，给0-39分
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6. 判断标准：60分及以上为正确（is_correct: true），否则为错误（is_correct: false）
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评分要求：
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1. 给出一个0-100的精确分数
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2. 判断答案是否正确（is_correct: 60分及以上为true，否则为false）
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3. 给出简短的评语（说明得分和失分原因，不超过50字）
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4. 给出具体的改进建议（如果答案满分可以为空，否则必须指出具体改进方向，不超过50字）
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请按照以下JSON格式返回结果：
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{
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"score": 85,
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"is_correct": true,
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"feedback": "答案基本正确，要点全面",
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"suggestion": "可以补充一些具体的例子"
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"feedback": "答案覆盖了主要要点，但XXX部分描述不够准确",
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"suggestion": "建议补充XXX内容，并完善XXX的描述"
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}
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注意：只返回JSON格式的结果，不要有其他内容。`, question, standardAnswer, userAnswer)
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注意：只返回JSON格式的结果，不要有其他内容。必须严格对照标准答案评分，不要过于宽松。`, question, standardAnswer, userAnswer)
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// 调用AI API
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resp, err := s.client.CreateChatCompletion(
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@ -80,14 +88,14 @@ func (s *AIGradingService) GradeShortAnswer(question, standardAnswer, userAnswer
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Messages: []openai.ChatCompletionMessage{
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{
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Role: openai.ChatMessageRoleSystem,
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Content: "你是一位专业的阅卷老师，擅长对简答题进行公正、客观的评分。",
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Content: "你是一位严格的阅卷老师，必须严格按照标准答案进行评分，不能过于宽松。你的评分标准是客观的、一致的、可预测的。",
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},
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{
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Role: openai.ChatMessageRoleUser,
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Content: prompt,
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},
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},
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Temperature: 0.3, // 较低的温度以获得更稳定的评分结果
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Temperature: 0, // 温度为0，获得最确定、最一致的评分结果
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},
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)
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@ -1,7 +1,7 @@
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import React, { useState, useEffect } from "react";
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import { useSearchParams, useNavigate } from "react-router-dom";
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import { Button, message, Typography } from "antd";
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import { ArrowLeftOutlined } from "@ant-design/icons";
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import { Button, message, Typography, Switch, InputNumber, Popover, Space } from "antd";
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import { ArrowLeftOutlined, SettingOutlined } from "@ant-design/icons";
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import type { Question, AnswerResult } from "../types/question";
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import * as questionApi from "../api/question";
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import QuestionProgress from "../components/QuestionProgress";
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@ -28,6 +28,33 @@ const QuestionPage: React.FC = () => {
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const [wrongCount, setWrongCount] = useState(0);
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const [showSummary, setShowSummary] = useState(false);
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// 自动跳转开关（默认开启）
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const [autoNext, setAutoNext] = useState(() => {
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const saved = localStorage.getItem('autoNextEnabled');
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return saved !== null ? saved === 'true' : true;
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});
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// 自动跳转延迟时间（秒，默认2秒）
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const [autoNextDelay, setAutoNextDelay] = useState(() => {
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const saved = localStorage.getItem('autoNextDelay');
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return saved !== null ? parseInt(saved, 10) : 2;
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});
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// 切换自动跳转开关
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const toggleAutoNext = () => {
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const newValue = !autoNext;
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setAutoNext(newValue);
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localStorage.setItem('autoNextEnabled', String(newValue));
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};
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// 修改自动跳转延迟时间
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const handleDelayChange = (value: number | null) => {
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if (value !== null && value >= 1 && value <= 10) {
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setAutoNextDelay(value);
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localStorage.setItem('autoNextDelay', String(value));
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}
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};
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// 从localStorage恢复答题进度
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const getStorageKey = () => {
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const type = searchParams.get("type");
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@ -180,13 +207,13 @@ const QuestionPage: React.FC = () => {
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saveProgress(currentIndex, correctCount, newWrong);
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}
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// 如果答案正确，1秒后自动进入下一题
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if (res.data.correct) {
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// 如果答案正确且开启自动跳转，根据设置的延迟时间后自动进入下一题
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if (res.data.correct && autoNext) {
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setAutoNextLoading(true);
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setTimeout(() => {
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setAutoNextLoading(false);
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handleNext();
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}, 1000);
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}, autoNextDelay * 1000); // 将秒转换为毫秒
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}
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}
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} catch (error) {
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@ -279,6 +306,53 @@ const QuestionPage: React.FC = () => {
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<span className={styles.statLabel}>错误</span>
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<span className={styles.statValue} style={{ color: '#ff4d4f' }}>{wrongCount}</span>
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</div>
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{/* 设置按钮 */}
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<Popover
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content={
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<div style={{ width: 200 }}>
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<Space direction="vertical" style={{ width: '100%' }}>
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<div>
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<div style={{ marginBottom: 8, fontWeight: 500 }}>自动下一题</div>
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<div style={{ display: 'flex', alignItems: 'center', gap: 8 }}>
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<Switch
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checked={autoNext}
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onChange={toggleAutoNext}
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size="small"
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/>
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<span style={{ fontSize: 14 }}>
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{autoNext ? '已开启' : '已关闭'}
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</span>
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</div>
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</div>
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{autoNext && (
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<div>
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<div style={{ marginBottom: 8, fontWeight: 500 }}>延迟时间</div>
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<Space>
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<InputNumber
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min={1}
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max={10}
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value={autoNextDelay}
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onChange={handleDelayChange}
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size="small"
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style={{ width: 60 }}
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/>
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<span style={{ fontSize: 14 }}>秒后跳转</span>
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</Space>
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</div>
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)}
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</Space>
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</div>
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}
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title="答题设置"
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trigger="click"
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placement="bottomRight"
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>
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<Button
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type="text"
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icon={<SettingOutlined />}
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style={{ marginLeft: 8 }}
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/>
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</Popover>
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</div>
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</div>
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