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@@ -90,6 +90,8 @@ services:
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volumes:
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- ./logs:/app/logs
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- ./resources/Pure_Component:/app/resources/Pure_Component
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# 持久化PDF缓存目录,确保生成的PDF在容器重启后仍然存在
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- ./storage/pdfg-cache:/app/storage/pdfg-cache
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# user: "1001:1001" # 注释掉,使用root权限运行
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networks:
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- tyapi-network
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@@ -94,13 +94,16 @@ func ProcessPDFG01GZRequest(ctx context.Context, params []byte, deps *processors
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pdfGenService = pdfgen.NewPDFGenService(defaultCfg, zapLogger)
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}
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// 计算缓存键(内部使用,不直接暴露给用户)
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cacheKey := cacheManager.GetCacheKey(paramsDto.Name, paramsDto.IDCard)
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// 检查缓存(基于姓名+身份证)
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_, hit, createdAt, err := cacheManager.Get(paramsDto.Name, paramsDto.IDCard)
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if err != nil {
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zapLogger.Warn("检查缓存失败,继续生成PDF", zap.Error(err))
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} else if hit {
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// 计算缓存键,作为报告ID(可持久化)
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reportID := cacheManager.GetCacheKey(paramsDto.Name, paramsDto.IDCard)
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// 生成对外可见的报告ID(包含随机前缀,防止用户直接推断缓存键)
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reportID := generateReportID(cacheKey)
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// 缓存命中,模拟生成耗时(约4秒)
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zapLogger.Info("PDF缓存命中,返回缓存文件",
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@@ -158,9 +161,6 @@ func ProcessPDFG01GZRequest(ctx context.Context, params []byte, deps *processors
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reportNumber = generateReportNumber()
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}
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// 计算报告ID(与缓存键一致,便于通过ID直接下载)
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reportID := cacheManager.GetCacheKey(paramsDto.Name, paramsDto.IDCard)
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// 构建PDF生成请求
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pdfReq := &pdfgen.GeneratePDFRequest{
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Data: formattedData,
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@@ -189,6 +189,9 @@ func ProcessPDFG01GZRequest(ctx context.Context, params []byte, deps *processors
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// 不影响返回结果,只记录警告
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}
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// 生成报告ID(与内部缓存键解耦,对外只暴露带前缀的ID)
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reportID := generateReportID(cacheKey)
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// 生成下载链接(基于报告ID)
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downloadURL := generateDownloadURL(apiDomain, reportID)
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expiresAt := time.Now().Add(cacheTTL)
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@@ -499,6 +502,13 @@ func generateReportNumber() string {
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return fmt.Sprintf("RPT%s", time.Now().Format("20060102150405"))
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}
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// generateReportID 生成对外可见的报告ID
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// 结构:{report_number}-{cacheKey},前缀变化以避免用户轻易看出是否命中缓存
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func generateReportID(cacheKey string) string {
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reportNumber := generateReportNumber()
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return fmt.Sprintf("%s-%s", reportNumber, cacheKey)
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}
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// generateDownloadURL 生成下载链接(基于报告ID/缓存键)
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// apiDomain: 外部可访问的API域名,如 api.tianyuanapi.com
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func generateDownloadURL(apiDomain, reportID string) string {
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@@ -3,6 +3,7 @@ package handlers
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import (
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"fmt"
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"net/http"
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"strings"
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"time"
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"github.com/gin-gonic/gin"
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@@ -35,18 +36,25 @@ func NewPDFGHandler(
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// DownloadPDF 下载PDF文件
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// GET /api/v1/pdfg/download?id=报告ID
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func (h *PDFGHandler) DownloadPDF(c *gin.Context) {
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reportID := c.Query("id")
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rawReportID := c.Query("id")
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if reportID == "" {
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if rawReportID == "" {
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h.responseBuilder.BadRequest(c, "报告ID不能为空")
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return
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}
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// 从对外报告ID中解析内部缓存键(使用最后一个'-'后的部分作为缓存键)
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cacheKey := rawReportID
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if idx := strings.LastIndex(rawReportID, "-"); idx > 0 && idx < len(rawReportID)-1 {
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cacheKey = rawReportID[idx+1:]
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}
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// 从缓存获取PDF
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pdfBytes, hit, createdAt, err := h.cacheManager.GetByCacheKey(reportID)
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pdfBytes, hit, createdAt, err := h.cacheManager.GetByCacheKey(cacheKey)
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if err != nil {
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h.logger.Error("获取PDF缓存失败",
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zap.String("report_id", reportID),
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zap.String("report_id", rawReportID),
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zap.String("cache_key", cacheKey),
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zap.Error(err),
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)
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h.responseBuilder.InternalError(c, "获取PDF文件失败")
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@@ -55,7 +63,8 @@ func (h *PDFGHandler) DownloadPDF(c *gin.Context) {
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if !hit {
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h.logger.Warn("PDF文件不存在或已过期",
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zap.String("report_id", reportID),
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zap.String("report_id", rawReportID),
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zap.String("cache_key", cacheKey),
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)
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h.responseBuilder.NotFound(c, "PDF文件不存在或已过期,请重新生成")
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return
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@@ -65,7 +74,8 @@ func (h *PDFGHandler) DownloadPDF(c *gin.Context) {
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expiresAt := createdAt.Add(24 * time.Hour)
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if time.Now().After(expiresAt) {
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h.logger.Warn("PDF文件已过期",
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zap.String("report_id", reportID),
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zap.String("report_id", rawReportID),
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zap.String("cache_key", cacheKey),
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zap.Time("expires_at", expiresAt),
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)
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h.responseBuilder.NotFound(c, "PDF文件已过期,请重新生成")
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@@ -74,14 +84,22 @@ func (h *PDFGHandler) DownloadPDF(c *gin.Context) {
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// 设置响应头
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c.Header("Content-Type", "application/pdf")
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c.Header("Content-Disposition", `attachment; filename="大数据租赁风险报告.pdf"`)
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// 使用报告ID前缀作为下载文件名的一部分,避免泄露内部缓存键
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filename := "大数据租赁风险报告.pdf"
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if idx := strings.LastIndex(rawReportID, "-"); idx > 0 {
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// 使用前缀(报告编号部分)作为文件名的一部分
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prefix := rawReportID[:idx]
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filename = fmt.Sprintf("大数据租赁风险报告_%s.pdf", prefix)
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}
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c.Header("Content-Disposition", fmt.Sprintf(`attachment; filename="%s"`, filename))
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c.Header("Content-Length", fmt.Sprintf("%d", len(pdfBytes)))
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// 发送PDF文件
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c.Data(http.StatusOK, "application/pdf", pdfBytes)
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h.logger.Info("PDF文件下载成功",
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zap.String("report_id", reportID),
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zap.String("report_id", rawReportID),
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zap.String("cache_key", cacheKey),
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zap.Int("file_size", len(pdfBytes)),
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)
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}
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