fix: 标准答案图先发+提示词优化+JSON强化+重试3次
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+66
-48
@@ -354,7 +354,7 @@ async function callAiApi(imageBase64: string, rubric: string, config: { apiKey:
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deductions: string[]
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comment: string
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}> {
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const systemRole = `你是高校阅卷专家，严格按照评分标准逐项评分。只输出JSON，不包含任何其他文字。`
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const systemRole = `你是高校阅卷专家，严格按照评分标准逐项评分。你必须只输出JSON，严禁包含\`\`\`markdown代码块、\`\`\`json标记、注释、说明文字或任何其他非JSON内容。输出必须以{开头，以}结尾，且必须是合法的JSON。`
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const hasRefImage = !!extras?.referenceAnswerImage
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@@ -368,10 +368,10 @@ ${extras?.referenceAnswer || '无'}
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【满分】
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${extras?.maxScore ?? 100}
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图片1：学生答案
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图片2：标准答案
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图片1：标准答案
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图片2：学生答案
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请按照标准答案（图片2）给学生答案（图片1）评分。
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请根据评分标准和标准答案（图片1）对学生答案（图片2）评分。
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---
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@@ -382,13 +382,14 @@ ${extras?.maxScore ?? 100}
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4. 部分正确时按评分标准酌情给分
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【输出要求】
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只输出以下JSON，不要包含markdown代码块、\`\`\`标记、注释或任何其他文字：
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你必须严格输出以下格式的纯JSON，严禁包含\`\`\`、\`\`\`json、markdown代码块、注释或任何说明文字。整个回复必须是合法的JSON对象，以{开始，以}结束：
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{
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"score": <总分>,
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"confidence": <置信度0~1>,
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"deductions": ["扣分项说明1", "扣分项说明2"],
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"comment": "总评语及逐项得分说明"
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}`
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}
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再次强调：只输出JSON，禁止任何其他内容。`
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: `${extras?.questionTitle ? `【题目】\n${extras.questionTitle}\n` : ''}【评分标准】
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${rubric || '无'}
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@@ -398,8 +399,8 @@ ${extras?.referenceAnswer || '无'}
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【满分】
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${extras?.maxScore ?? 100}
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【学生答案】
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请看图片中的内容。
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图片：学生答案
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请根据评分标准对学生答案评分。
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---
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@@ -410,65 +411,82 @@ ${extras?.maxScore ?? 100}
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4. 部分正确时按评分标准酌情给分
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【输出要求】
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只输出以下JSON，不要包含markdown代码块、\`\`\`标记、注释或任何其他文字：
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你必须严格输出以下格式的纯JSON，严禁包含\`\`\`、\`\`\`json、markdown代码块、注释或任何说明文字。整个回复必须是合法的JSON对象，以{开始，以}结束：
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{
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"score": <总分>,
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"confidence": <置信度0~1>,
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"deductions": ["扣分项说明1", "扣分项说明2"],
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"comment": "总评语及逐项得分说明"
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}`
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}
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再次强调：只输出JSON，禁止任何其他内容。`
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const axios = require('axios')
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const userContent: any[] = hasRefImage
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? [
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{ type: 'text', text: prompt },
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{ type: 'image_url', image_url: { url: `data:image/png;base64,${imageBase64}` } },
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{ type: 'image_url', image_url: { url: extras!.referenceAnswerImage } }
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{ type: 'image_url', image_url: { url: extras!.referenceAnswerImage } },
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{ type: 'image_url', image_url: { url: `data:image/png;base64,${imageBase64}` } }
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]
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: [
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{ type: 'text', text: prompt },
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{ type: 'image_url', image_url: { url: `data:image/png;base64,${imageBase64}` } }
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]
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const response = await axios.post(`${config.baseUrl}/chat/completions`, {
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model: config.model,
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messages: [
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{
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role: 'system',
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content: systemRole
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},
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{
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role: 'user',
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content: userContent
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}
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],
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max_tokens: 4096,
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temperature: 0.3
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}, {
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headers: {
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'Content-Type': 'application/json',
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'Authorization': `Bearer ${config.apiKey}`
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},
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timeout: ((getStore().get('timeout') as number) ?? 120) * 1000
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})
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let lastError: Error | null = null
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for (let attempt = 1; attempt <= 3; attempt++) {
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try {
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const response = await axios.post(`${config.baseUrl}/chat/completions`, {
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model: config.model,
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messages: [
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{
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role: 'system',
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content: systemRole
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},
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{
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role: 'user',
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content: userContent
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}
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],
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max_tokens: 4096,
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temperature: 0.3
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}, {
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headers: {
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'Content-Type': 'application/json',
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'Authorization': `Bearer ${config.apiKey}`
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},
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timeout: ((getStore().get('timeout') as number) ?? 120) * 1000
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})
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const content = response.data?.choices?.[0]?.message?.content
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if (!content) {
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log.error('AI API 返回为空或格式异常:', JSON.stringify(response.data).slice(0, 1000))
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throw new Error(`API 返回为空，请检查模型名是否正确 (当前: ${config.model})`)
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}
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const parsed = tryParseJson(content)
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if (!parsed) {
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log.error('AI 返回 JSON 解析失败:', content.slice(0, 500))
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throw new Error(`AI 返回格式异常，无法解析为 JSON。原始返回：\n${content}`)
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}
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return {
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score: parsed.score,
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confidence: parsed.confidence ?? 0.5,
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deductions: parsed.deductions ?? [],
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comment: parsed.comment ?? parsed.commit ?? ''
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const content = response.data?.choices?.[0]?.message?.content
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if (!content) {
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lastError = new Error(`API 返回为空 (尝试 ${attempt}/3)`)
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log.warn(`AI API empty response, attempt ${attempt}/3`)
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if (attempt < 3) continue
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throw lastError
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}
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const parsed = tryParseJson(content)
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if (!parsed) {
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lastError = new Error(`AI 返回 JSON 解析失败 (尝试 ${attempt}/3)`)
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log.warn(`AI JSON parse failed, attempt ${attempt}/3:`, content.slice(0, 200))
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if (attempt < 3) continue
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throw lastError
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}
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return {
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score: parsed.score,
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confidence: parsed.confidence ?? 0.5,
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deductions: parsed.deductions ?? [],
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comment: parsed.comment ?? parsed.commit ?? ''
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}
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} catch (err: any) {
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lastError = err
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if (attempt < 3) {
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log.info(`AI API attempt ${attempt}/3 failed, retrying...`)
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await new Promise(r => setTimeout(r, 2000))
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}
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}
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}
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throw lastError || new Error('AI API 调用失败')
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}
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function tryParseJson(text: string): any {
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