From 40dd0e9898bf2a88e51d497c46d826ea8f7326f4 Mon Sep 17 00:00:00 2001
From: shinnosuke <tantao@1hoper.com>
Date: 星期四, 20 八月 2026 09:37:15 +0800
Subject: [PATCH] fix: connect premium merchants and restrict approval PDFs

---
 talent-card-server/src/main/java/com/talentcard/server/upload/ImageUploadService.java |   32 ++++++++++++++++++++++++++++++++
 1 files changed, 32 insertions(+), 0 deletions(-)

diff --git a/talent-card-server/src/main/java/com/talentcard/server/upload/ImageUploadService.java b/talent-card-server/src/main/java/com/talentcard/server/upload/ImageUploadService.java
index 92546d8..88fcb51 100644
--- a/talent-card-server/src/main/java/com/talentcard/server/upload/ImageUploadService.java
+++ b/talent-card-server/src/main/java/com/talentcard/server/upload/ImageUploadService.java
@@ -19,6 +19,7 @@
 public class ImageUploadService {
 
 	private static final long MAX_IMAGE_SIZE = 10L * 1024 * 1024;
+	private static final long MAX_PDF_SIZE = 20L * 1024 * 1024;
 
 	private final Path uploadDirectory;
 
@@ -56,6 +57,37 @@
 		return new ImageUploadResult("/uploads/" + filename);
 	}
 
+	public ImageUploadResult uploadPdf(MultipartFile file) {
+		if (file == null || file.isEmpty()) {
+			throw new BusinessException(ErrorCode.BAD_REQUEST, "请选择 PDF 文件");
+		}
+		if (file.getSize() > MAX_PDF_SIZE) {
+			throw new BusinessException(ErrorCode.BAD_REQUEST, "PDF 文件大小不能超过 20 MB");
+		}
+		try (InputStream input = file.getInputStream()) {
+			byte[] header = input.readNBytes(5);
+			if (header.length < 5 || header[0] != '%' || header[1] != 'P' || header[2] != 'D' || header[3] != 'F' || header[4] != '-') {
+				throw new BusinessException(ErrorCode.BAD_REQUEST, "仅支持 PDF 文件");
+			}
+		} catch (IOException exception) {
+			throw new BusinessException(ErrorCode.BAD_REQUEST, "无法读取 PDF 文件");
+		}
+		String contentType = file.getContentType() == null ? "" : file.getContentType().toLowerCase(Locale.ROOT);
+		if (!contentType.isBlank() && !"application/pdf".equals(contentType) && !"application/octet-stream".equals(contentType)) {
+			throw new BusinessException(ErrorCode.BAD_REQUEST, "仅支持 PDF 文件");
+		}
+		String filename = UUID.randomUUID() + ".pdf";
+		try {
+			Files.createDirectories(uploadDirectory);
+			Path destination = uploadDirectory.resolve(filename).normalize();
+			if (!destination.startsWith(uploadDirectory)) throw new BusinessException(ErrorCode.BAD_REQUEST, "Invalid PDF filename");
+			Files.copy(file.getInputStream(), destination, StandardCopyOption.REPLACE_EXISTING);
+		} catch (IOException exception) {
+			throw new BusinessException(ErrorCode.INTERNAL_ERROR, "保存 PDF 文件失败");
+		}
+		return new ImageUploadResult("/uploads/" + filename);
+	}
+
 	private String detectImageExtension(MultipartFile file) {
 		byte[] header = new byte[12];
 		try (InputStream input = file.getInputStream()) {

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