From 4dc88990862fa36f4f7a32317319a1884af34c67 Mon Sep 17 00:00:00 2001
From: ouyangxq <775153912@qq.com>
Date: Sun, 20 Sep 2026 14:43:33 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96?=
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---
 src/api/overseas.js             |  4 +++-
 tests/overseas-request.test.mjs | 14 ++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/api/overseas.js b/src/api/overseas.js
index f1c7d97..3282d7e 100644
--- a/src/api/overseas.js
+++ b/src/api/overseas.js
@@ -174,7 +174,9 @@ export async function overseasDownload(path, options = {}) {
 		throw errorFrom({ ...response, data: {} }, '签收照片下载失败')
 	}
 	const contentType = String(response?.header?.['content-type'] || response?.header?.['Content-Type'] || '').toLowerCase()
-	if (expectedContentTypePrefix && !contentType.startsWith(expectedContentTypePrefix.toLowerCase())) {
+	// App-Plus downloadFile may omit response headers even when the image body was downloaded successfully.
+	// Reject an explicit non-image response, but allow a valid temp file when Content-Type is unavailable.
+	if (expectedContentTypePrefix && contentType && !contentType.startsWith(expectedContentTypePrefix.toLowerCase())) {
 		throw errorFrom({ ...response, data: {} }, '照片服务返回了无效内容，请稍后重试')
 	}
 	return response.tempFilePath
diff --git a/tests/overseas-request.test.mjs b/tests/overseas-request.test.mjs
index 90b1b7d..24c2010 100644
--- a/tests/overseas-request.test.mjs
+++ b/tests/overseas-request.test.mjs
@@ -274,6 +274,20 @@ test('authenticated photo download maps the public api path through the H5 overs
 	assert.equal(calls[0].header.Authorization, `Bearer ${value.overseasAccessToken}`)
 })
 
+test('native image download accepts a valid temp file when App-Plus omits response headers', async () => {
+	prepareSession()
+	globalThis.uni.downloadFile = (options) => options.success({
+		statusCode: 200,
+		tempFilePath: '_doc/uniapp_temp/photo.jpg',
+		header: {}
+	})
+
+	assert.equal(
+		await overseasDownload('/api/pda/v1/last-leg/photo', { expectedContentTypePrefix: 'image/' }),
+		'_doc/uniapp_temp/photo.jpg'
+	)
+})
+
 test('image download rejects a JSON error envelope returned with HTTP 200', async () => {
 	prepareSession()
 	globalThis.uni.downloadFile = (options) => options.success({