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owenchen committed 2026-10-21 09:39:47 +08:00
1 parent 05ca116194
commit 1ff69f3cb3
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uniapp/youjiala/src/components/image-viewer/image-viewer.vue
+281 -217
View File
@@ -14,38 +14,43 @@ import { computed, ref, watch } from "vue";
import { rotateLeftGlyph, rotateRightGlyph } from "@/utils/rotateGlyph";
export interface ImageViewerItem {
/** 列表缩略图直链（列表已加载过，秒显）；空则打开时自动拉原图 */
thumb?: string;
/** 原图按需加载器：页面注入，返回可播放地址（App 落盘路径 / H5 blob / 小程序本地路径） */
loadFull?: () => Promise<string>;
/** 展示名（顶部信息位） */
name?: string;
/** 列表缩略图直链（列表已加载过，秒显）；空则打开时自动拉原图 */
thumb?: string;
/** 原图按需加载器：页面注入，返回可播放地址（App 落盘路径 / H5 blob / 小程序本地路径） */
loadFull?: () => Promise<string>;
/** 展示名（顶部信息位） */
name?: string;
}
interface Slot {
/** 当前显示地址（缩略图或已加载的原图） */
src: string;
/** 已加载的原图地址（未拉取为 undefined） */
full?: string;
/** 原图拉取在途标记 */
loading: boolean;
/** 当前图旋转角（左旋 -90 / 右旋 +90 累积，模 360） */
rotate: number;
/** 当前图缩放倍率（放大 ×1.25 / 缩小 ÷1.25，0.6~4 之间） */
scale: number;
/** 当前显示地址（缩略图或已加载的原图） */
src: string;
/** 已加载的原图地址（未拉取为 undefined） */
full?: string;
/** 原图拉取在途标记 */
loading: boolean;
/** 当前图旋转角（左旋 -90 / 右旋 +90 累积，模 360） */
rotate: number;
/** 当前图缩放倍率（放大 ×1.25 / 缩小 ÷1.25，0.6~4 之间） */
scale: number;
/** 平移量（px，屏幕轴；只有放大后单指拖动才会变，缩回 1 倍自动归零） */
x: number;
y: number;
/** 拖动会话中：临时关掉 transform 过渡，图片跟手 */
dragging: boolean;
}
const props = withDefaults(
defineProps<{
visible: boolean;
items?: ImageViewerItem[];
}>(),
{ items: () => [] },
defineProps<{
visible: boolean;
items?: ImageViewerItem[];
}>(),
{ items: () => [] },
);
const emit = defineEmits<{
/** 点关闭按钮 */
(e: "close"): void;
/** 点关闭按钮 */
(e: "close"): void;
}>();
// 旋转字形恒白，模块级生成一次（custom-icon.md：颜色固定 → 模块级 const）
@@ -54,109 +59,169 @@ const rotateRightIcon = rotateRightGlyph("#ffffff");
const { t } = useLocale();
// 图区尺寸缓存：拖动边界按「放大溢出量的一半」算，不必每帧调同步 API
const { windowWidth: viewWidth, windowHeight: viewHeight } = uni.getSystemInfoSync();
const slots = ref<Slot[]>([]);
const index = ref(0);
watch(
() => props.visible,
(v) => {
if (v) {
index.value = 0;
slots.value = (props.items ?? []).map(item => ({
src: item.thumb || "",
full: undefined,
loading: false,
rotate: 0,
scale: 1,
}));
// 没有缩略图的老文件：打开即自动拉原图兜底，不留白等用户点按钮
slots.value.forEach((_, i) => {
if (!slots.value[i].src) {
loadOriginal(i);
() => props.visible,
(v) => {
if (v) {
index.value = 0;
slots.value = (props.items ?? []).map(item => ({
src: item.thumb || "",
full: undefined,
loading: false,
rotate: 0,
scale: 1,
x: 0,
y: 0,
dragging: false,
}));
// 没有缩略图的老文件：打开即自动拉原图兜底，不留白等用户点按钮
slots.value.forEach((_, i) => {
if (!slots.value[i].src) {
loadOriginal(i);
}
});
}
});
}
else {
revokeBlobs();
// 关窗即释放高清地址：App 端是 data: URI（一张图几 MB），多图连览不能积压
slots.value = [];
}
},
else {
revokeBlobs();
// 关窗即释放高清地址：App 端是 data: URI（一张图几 MB），多图连览不能积压
slots.value = [];
}
},
);
/** 关闭时回收 H5 blob: 地址；App/小程序是本地文件路径，不处理（App 落盘文件正好当下次缓存） */
function revokeBlobs(): void {
// #ifdef H5
slots.value.forEach((slot) => {
if (slot.full && slot.full.startsWith("blob:")) {
URL.revokeObjectURL(slot.full);
}
});
// #endif
// #ifdef H5
slots.value.forEach((slot) => {
if (slot.full && slot.full.startsWith("blob:")) {
URL.revokeObjectURL(slot.full);
}
});
// #endif
}
function onSwipeChange(e: any): void {
index.value = e?.detail?.current ?? 0;
index.value = e?.detail?.current ?? 0;
}
/** 左旋/右旋：每图独立累积角，模 360 防无限增长 */
function rotateCurrent(delta: number): void {
const slot = slots.value[index.value];
if (!slot) {
return;
}
slot.rotate = (slot.rotate + delta) % 360;
const slot = slots.value[index.value];
if (!slot) {
return;
}
slot.rotate = (slot.rotate + delta) % 360;
}
/** 放大/缩小：倍率夹在 0.6~4，超出范围按钮照点不生效（变换仍平滑） */
/**
* 拖动边界：放大 n 倍后中心最多偏出 (n-1)/2 个屏宽/屏高，图片不会整体拖出视野；
* 缩回 1 倍时 max 为 0，偏移自动归零
*/
function clampOffset(slot: Slot): void {
const maxX = Math.max(0, (slot.scale - 1) * viewWidth / 2);
const maxY = Math.max(0, (slot.scale - 1) * viewHeight / 2);
slot.x = Math.min(maxX, Math.max(-maxX, slot.x));
slot.y = Math.min(maxY, Math.max(-maxY, slot.y));
}
// 单指拖动会话（同一时刻只有一根手指在拖当前图，不必存进每个 Slot）
let dragStartX = 0;
let dragStartY = 0;
let dragOriginX = 0;
let dragOriginY = 0;
/** 放大后才启用单指平移：小图状态单指手势留给 swiper 翻页 */
function onImageTouchStart(e: any): void {
const slot = slots.value[index.value];
const touch = e.touches?.[0];
if (!slot || !touch || slot.scale <= 1) {
return;
}
slot.dragging = true;
dragStartX = touch.clientX;
dragStartY = touch.clientY;
dragOriginX = slot.x;
dragOriginY = slot.y;
}
/** 拖动平移：transform 里 translate 在最外层，位移沿屏幕轴、与旋转角无关，始终跟手 */
function onImageTouchMove(e: any): void {
const slot = slots.value[index.value];
const touch = e.touches?.[0];
if (!slot || !slot.dragging || !touch) {
return;
}
slot.x = dragOriginX + touch.clientX - dragStartX;
slot.y = dragOriginY + touch.clientY - dragStartY;
clampOffset(slot);
}
function onImageTouchEnd(): void {
const slot = slots.value[index.value];
if (slot) {
slot.dragging = false;
}
}
/** 放大（>1 倍）时禁用 swiper 翻页，把单指手势让给图片平移 */
const panEnabled = computed(() => (slots.value[index.value]?.scale ?? 1) > 1);
/** 放大/缩小：倍率夹在 0.6~4，超出范围按钮照点不生效（变换仍平滑）；缩放后收一下平移量 */
function zoomCurrent(factor: number): void {
const slot = slots.value[index.value];
if (!slot) {
return;
}
slot.scale = Math.min(4, Math.max(0.6, slot.scale * factor));
const slot = slots.value[index.value];
if (!slot) {
return;
}
slot.scale = Math.min(4, Math.max(0.6, slot.scale * factor));
clampOffset(slot);
}
/** 高清钮文案：拉取中 / 已高清 / 高清 */
const buttonText = computed(() => {
const slot = slots.value[index.value];
if (!slot) {
return t("FilePage.previewOriginal");
}
if (slot.loading) {
return t("FilePage.previewOriginalLoading");
}
return slot.full ? t("FilePage.previewOriginalLoaded") : t("FilePage.previewOriginal");
const slot = slots.value[index.value];
if (!slot) {
return t("FilePage.previewOriginal");
}
if (slot.loading) {
return t("FilePage.previewOriginalLoading");
}
return slot.full ? t("FilePage.previewOriginalLoaded") : t("FilePage.previewOriginal");
});
/** 拉取中/已加载时禁用高清钮，避免重复触发 */
const buttonDisabled = computed(() => {
const slot = slots.value[index.value];
return !slot || slot.loading || !!slot.full;
const slot = slots.value[index.value];
return !slot || slot.loading || !!slot.full;
});
/** 按需拉原图：成功后立即原地替换当前图（同一 image 换 src 即重载，高清及时切换） */
async function loadOriginal(i = index.value): Promise<void> {
const item = props.items?.[i];
const slot = slots.value[i];
if (!item || !slot || slot.loading || slot.full || !item.loadFull) {
return;
}
slot.loading = true;
try {
const url = await item.loadFull();
slot.full = url;
slot.src = url;
}
catch (error: any) {
uni.showToast({
title: error?.message || t("FilePage.previewOriginalFail"),
icon: "none",
});
}
finally {
slot.loading = false;
}
const item = props.items?.[i];
const slot = slots.value[i];
if (!item || !slot || slot.loading || slot.full || !item.loadFull) {
return;
}
slot.loading = true;
try {
const url = await item.loadFull();
slot.full = url;
slot.src = url;
}
catch (error: any) {
uni.showToast({
title: error?.message || t("FilePage.previewOriginalFail"),
icon: "none",
});
}
finally {
slot.loading = false;
}
}
/**
@@ -164,180 +229,179 @@ async function loadOriginal(i = index.value): Promise<void> {
* 不让用户对着黑屏；同时清掉 full 让高清钮回到可重试状态
*/
function onImageError(i: number): void {
const slot = slots.value[i];
const item = props.items?.[i];
if (!slot || !item || !slot.full || slot.src !== slot.full) {
return;
}
slot.src = item.thumb || "";
slot.full = undefined;
uni.showToast({
title: t("FilePage.previewOriginalFail"),
icon: "none",
});
const slot = slots.value[i];
const item = props.items?.[i];
if (!slot || !item || !slot.full || slot.src !== slot.full) {
return;
}
slot.src = item.thumb || "";
slot.full = undefined;
uni.showToast({
title: t("FilePage.previewOriginalFail"),
icon: "none",
});
}
</script>
<template>
<view v-if="visible" class="iv" @touchmove.stop.prevent>
<!-- 顶部：计数 + 工具组（左旋/右旋/放大/缩小/高清/关闭，状态栏避让同 photo-slide-player 口径） -->
<view class="iv-top">
<text class="iv-count">
{{ index + 1 }} / {{ slots.length }}
</text>
<view class="iv-tools">
<view class="iv-tool" @click="rotateCurrent(-90)">
<image class="iv-tool-img" :src="rotateLeftIcon" mode="aspectFit" />
<view v-if="visible" class="iv" @touchstart="onImageTouchStart" @touchmove.stop.prevent="onImageTouchMove"
@touchend="onImageTouchEnd" @touchcancel="onImageTouchEnd">
<!-- 顶部：计数 + 工具组（左旋/右旋/放大/缩小/高清/关闭，状态栏避让同 photo-slide-player 口径） -->
<view class="iv-top">
<text class="iv-count">
{{ index + 1 }} / {{ slots.length }}
</text>
<view class="iv-tools">
<view class="iv-tool" @click="rotateCurrent(-90)">
<image class="iv-tool-img" :src="rotateLeftIcon" mode="aspectFit" />
</view>
<view class="iv-tool" @click="rotateCurrent(90)">
<image class="iv-tool-img" :src="rotateRightIcon" mode="aspectFit" />
</view>
<view class="iv-tool" @click="zoomCurrent(1.25)">
<u-icon name="plus" size="40" color="#ffffff" />
</view>
<view class="iv-tool" @click="zoomCurrent(0.8)">
<u-icon name="minus" size="40" color="#ffffff" />
</view>
<!-- 高清用文字（需求约定），拉取中/已加载禁用 -->
<view class="iv-tool iv-tool--text" :class="{ 'is-disabled': buttonDisabled }" @click="loadOriginal()">
<text class="iv-tool-text">
{{ buttonText }}
</text>
</view>
<view class="iv-tool" @click="emit('close')">
<u-icon name="close" size="40" color="#ffffff" />
</view>
</view>
</view>
<view class="iv-tool" @click="rotateCurrent(90)">
<image class="iv-tool-img" :src="rotateRightIcon" mode="aspectFit" />
</view>
<view class="iv-tool" @click="zoomCurrent(1.25)">
<u-icon name="plus" size="40" color="#ffffff" />
</view>
<view class="iv-tool" @click="zoomCurrent(0.8)">
<u-icon name="minus" size="40" color="#ffffff" />
</view>
<!-- 高清用文字（需求约定），拉取中/已加载禁用 -->
<view
class="iv-tool iv-tool--text"
:class="{ 'is-disabled': buttonDisabled }"
@click="loadOriginal()"
>
<text class="iv-tool-text">
{{ buttonText }}
</text>
</view>
<view class="iv-tool" @click="emit('close')">
<u-icon name="close" size="40" color="#ffffff" />
</view>
</view>
</view>
<!-- 图区：左右滑动连览，每张按「缩略图 → 高清」渐进升级，旋转/缩放按图独立 -->
<swiper class="iv-swiper" :current="index" @change="onSwipeChange">
<swiper-item v-for="(slot, i) in slots" :key="i" class="iv-pane">
<image
v-if="slot.src"
class="iv-img"
:src="slot.src"
mode="aspectFit"
:style="{ transform: `rotate(${slot.rotate}deg) scale(${slot.scale})` }"
@error="onImageError(i)"
/>
<!-- 缩略图缺失时的拉取占位（打开即自动拉原图，这里只在途提示） -->
<view v-else class="iv-wait">
<text class="iv-wait-text">
{{ t("FilePage.previewOriginalLoading") }}
</text>
</view>
</swiper-item>
</swiper>
</view>
<!-- 图区：左右滑动连览，每张按「缩略图 → 高清」渐进升级，旋转/缩放/平移按图独立；
放大后禁用 swiper 翻页（单指手势让给拖动） -->
<swiper class="iv-swiper" :current="index" :disable-touch="panEnabled" @change="onSwipeChange">
<swiper-item v-for="(slot, i) in slots" :key="i" class="iv-pane">
<image v-if="slot.src" class="iv-img" :class="{ 'iv-img--dragging': slot.dragging }" :src="slot.src"
mode="aspectFit"
:style="{ transform: `translate(${slot.x}px, ${slot.y}px) rotate(${slot.rotate}deg) scale(${slot.scale})` }"
@error="onImageError(i)" />
<!-- 缩略图缺失时的拉取占位（打开即自动拉原图，这里只在途提示） -->
<view v-else class="iv-wait">
<text class="iv-wait-text">
{{ t("FilePage.previewOriginalLoading") }}
</text>
</view>
</swiper-item>
</swiper>
</view>
</template>
<style lang="scss" scoped>
.iv {
position: fixed;
inset: 0;
z-index: 999;
display: flex;
flex-direction: column;
background: rgba(0, 0, 0, 0.96);
position: fixed;
inset: 0;
z-index: 999;
display: flex;
flex-direction: column;
background: rgba(0, 0, 0, 0.96);
}
/* ===== 顶部栏 ===== */
.iv-top {
display: flex;
align-items: center;
justify-content: space-between;
/* App 端状态栏透明且不占位，用 uni 注入的 --status-bar-height 避让；H5 用 safe-area */
/* #ifdef APP-PLUS */
padding-top: calc(24rpx + var(--status-bar-height, 0px));
/* #endif */
/* #ifndef APP-PLUS */
padding-top: calc(24rpx + env(safe-area-inset-top));
/* #endif */
padding-right: 24rpx;
padding-bottom: 16rpx;
padding-left: 32rpx;
display: flex;
align-items: center;
justify-content: space-between;
/* App 端状态栏透明且不占位，用 uni 注入的 --status-bar-height 避让；H5 用 safe-area */
/* #ifdef APP-PLUS */
padding-top: calc(24rpx + var(--status-bar-height, 0px));
/* #endif */
/* #ifndef APP-PLUS */
padding-top: calc(24rpx + env(safe-area-inset-top));
/* #endif */
padding-right: 24rpx;
padding-bottom: 16rpx;
padding-left: 32rpx;
}
.iv-count {
font-size: 28rpx;
color: rgba(255, 255, 255, 0.85);
font-size: 28rpx;
color: rgba(255, 255, 255, 0.85);
}
.iv-tools {
display: flex;
align-items: center;
gap: 20rpx;
display: flex;
align-items: center;
gap: 20rpx;
}
/* 工具钮：圆形半透明底；高清/关闭同款容器保证对齐 */
.iv-tool {
display: flex;
align-items: center;
justify-content: center;
width: 72rpx;
height: 72rpx;
border-radius: 50%;
background: rgba(255, 255, 255, 0.14);
display: flex;
align-items: center;
justify-content: center;
width: 72rpx;
height: 72rpx;
border-radius: 50%;
background: rgba(255, 255, 255, 0.14);
}
.iv-tool-img {
width: 40rpx;
height: 40rpx;
width: 40rpx;
height: 40rpx;
}
/* 高清文字钮：胶囊底，宽随文案 */
.iv-tool--text {
width: auto;
padding: 0 28rpx;
border: 2rpx solid rgba(255, 255, 255, 0.45);
border-radius: 999rpx;
width: auto;
padding: 0 28rpx;
border: 2rpx solid rgba(255, 255, 255, 0.45);
border-radius: 999rpx;
}
.iv-tool-text {
font-size: 26rpx;
color: #ffffff;
white-space: nowrap;
font-size: 26rpx;
color: #ffffff;
white-space: nowrap;
}
.iv-tool.is-disabled {
opacity: 0.55;
opacity: 0.55;
}
/* ===== 图区 ===== */
.iv-swiper {
flex: 1;
min-height: 0;
width: 100%;
flex: 1;
min-height: 0;
width: 100%;
}
.iv-pane {
display: flex;
align-items: center;
justify-content: center;
width: 100%;
height: 100%;
display: flex;
align-items: center;
justify-content: center;
width: 100%;
height: 100%;
}
.iv-img {
width: 100%;
height: 100%;
/* 旋转/缩放平滑过渡（0.25s 足够跟手又不会显得迟滞） */
transition: transform 0.25s ease;
width: 100%;
height: 100%;
/* 旋转/缩放平滑过渡（0.25s 足够跟手又不会显得迟滞） */
transition: transform 0.25s ease;
}
/* 拖动中关掉过渡：否则图片会追着手指爬，跟手感全无 */
.iv-img--dragging {
transition: none;
}
.iv-wait {
display: flex;
align-items: center;
justify-content: center;
display: flex;
align-items: center;
justify-content: center;
}
.iv-wait-text {
font-size: 26rpx;
color: rgba(255, 255, 255, 0.6);
font-size: 26rpx;
color: rgba(255, 255, 255, 0.6);
}
</style>
uniapp/youjiala/src/stores/uploadQueue.ts
+22 -4
View File
@@ -74,6 +74,17 @@ function extOf(fileName: string): string {
return dot > 0 ? fileName.slice(dot) : ".ext";
}
/**
* 分片协议名唯一前缀（uid-序号-总数.ext 的 uid 段）。
* pump() 是同步循环，同批并发任务几乎必在同一毫秒点着，只靠 Date.now() 会重名：
* App 端重名会让 copyTo 目标冲突或互相覆盖，H5 端重名会让分片文件互相覆盖；
* 重试任务也会重新准备，同样要换新名，故再拼模块级自增序号。
*/
function uniqueUploadTag(): string {
seq += 1;
return `uni-${Date.now()}-${seq}`;
}
/** 分片大小：内网 3MB / 公网 1MB（旧系统 FileUpload 同口径；开发构建视为内网） */
function resolveChunkSize(): number {
const publicNet = /localhost|127\.|192\.168\.|10\./.test(baseUrl);
@@ -88,7 +99,7 @@ function prepareAppFilePath(item: UploadItem): Promise<string> {
// 真机验证前不引入分片循环（读不了本地字节切片）
return copyIntoAppUploadDir(
item.filePath,
`uni-${Date.now()}-1-1${extOf(item.name)}`,
`${uniqueUploadTag()}-1-1${extOf(item.name)}`,
);
// #endif
// #ifndef APP-PLUS
@@ -202,7 +213,7 @@ export const useUploadQueueStore = defineStore(
let aborted = false;
const chunkSize = resolveChunkSize();
const total = Math.max(Math.ceil(blob.size / chunkSize), 1);
const uid = `uni-${Date.now()}`;
const uid = uniqueUploadTag();
const startedAt = Date.now();
let doneBytes = 0;
@@ -272,7 +283,7 @@ export const useUploadQueueStore = defineStore(
};
}
/** uni 通道（App）：先复制成分片名再发（后端按 filename 解析分片）；复制失败回退原路径，至少能拿到明确的后端报错 */
/** uni 通道（App）：先复制成分片名再发（后端按 filename 解析分片）；复制失败直接判失败，不回退原路径 */
function uniUpload(item: UploadItem): UploadHandle {
let task: UniApp.UploadTask | null = null;
let aborted = false;
@@ -310,7 +321,14 @@ export const useUploadQueueStore = defineStore(
prepareAppFilePath(item)
.then(start)
.catch(() => start(item.filePath));
.catch(() => {
// 绝不能回退原路径重传：原文件名没有 uid-序号-总数 协议，后端
// PackUploadDmsFile 拆不出分片序号会静默 return null（HTTP 200 空体），
// 任务反而被当成成功、库里却是 0 条——宁可显式失败让用户重试
item.status = "failed";
item.error = "文件准备失败";
finish(item);
});
return {
abort: () => {
uniapp/youjiala/src/utils/appFileWrite.ts
+25 -23
View File
@@ -19,8 +19,8 @@ declare const plus: any;
/** 单次过桥字节数：512KB 转 base64 约 683KB 字符串，兼顾内存峰值与调用次数 */
const BYTES_PER_TRIP = 512 * 1024;
const BASE64_CHARS
= "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
const BASE64_CHARS =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
/**
* 纯 JS base64（浏览器 btoa 在 App 逻辑层不保证存在，不依赖它）：
@@ -52,7 +52,9 @@ export function base64OfBytes(bytes: ArrayBuffer): string {
const parts: string[] = [];
for (let offset = 0; offset < data.length; offset += chunkSize) {
parts.push(
base64OfChunk(data.subarray(offset, Math.min(offset + chunkSize, data.length))),
base64OfChunk(
data.subarray(offset, Math.min(offset + chunkSize, data.length)),
),
);
}
return parts.join("");
@@ -71,27 +73,27 @@ const PUBLIC_DOWNLOAD_FOLDER = "有家啦";
export function mimeOf(fileName: string): string {
const ext = fileName.slice(fileName.lastIndexOf(".") + 1).toLowerCase();
const map: Record<string, string> = {
"jpg": "image/jpeg",
"jpeg": "image/jpeg",
"png": "image/png",
"gif": "image/gif",
"webp": "image/webp",
"bmp": "image/bmp",
"mp3": "audio/mpeg",
"m4a": "audio/mp4",
"wav": "audio/wav",
"aac": "audio/aac",
"mp4": "video/mp4",
"mov": "video/quicktime",
jpg: "image/jpeg",
jpeg: "image/jpeg",
png: "image/png",
gif: "image/gif",
webp: "image/webp",
bmp: "image/bmp",
mp3: "audio/mpeg",
m4a: "audio/mp4",
wav: "audio/wav",
aac: "audio/aac",
mp4: "video/mp4",
mov: "video/quicktime",
"3gp": "video/3gpp",
"pdf": "application/pdf",
"txt": "text/plain",
"json": "application/json",
"xls": "application/vnd.ms-excel",
"xlsx": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
"doc": "application/msword",
"docx": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
"zip": "application/zip",
pdf: "application/pdf",
txt: "text/plain",
json: "application/json",
xls: "application/vnd.ms-excel",
xlsx: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
doc: "application/msword",
docx: "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
zip: "application/zip",
};
return map[ext] || "application/octet-stream";
}
uniapp/youjiala/src/utils/dmsBytes.ts
+21 -9
View File
@@ -13,7 +13,11 @@
import { requestBuffer, saveArrayBuffer } from "@/common/http.interceptor";
import { FileTypePolicy } from "@/policy/custom/fileTypePolicy";
import dmsFileService from "@/service/master/dmsFileService";
import { base64OfBytes, mimeOf, writeAppFileFromBytes } from "@/utils/appFileWrite";
import {
base64OfBytes,
mimeOf,
writeAppFileFromBytes,
} from "@/utils/appFileWrite";
/** 取回结果：整文件字节 + 展示文件名（下载落盘与生成播放地址共用） */
export interface FileBytes {
@@ -27,21 +31,27 @@ export interface FileBytes {
*/
function imageMimeOf(bytes: ArrayBuffer, name: string): string {
const head = new Uint8Array(bytes, 0, Math.min(12, bytes.byteLength));
if (head[0] === 0xFF && head[1] === 0xD8) {
if (head[0] === 0xff && head[1] === 0xd8) {
return "image/jpeg";
}
if (head[0] === 0x89 && head[1] === 0x50 && head[2] === 0x4E) {
if (head[0] === 0x89 && head[1] === 0x50 && head[2] === 0x4e) {
return "image/png";
}
if (head[0] === 0x47 && head[1] === 0x49 && head[2] === 0x46) {
return "image/gif";
}
if (head[0] === 0x42 && head[1] === 0x4D) {
if (head[0] === 0x42 && head[1] === 0x4d) {
return "image/bmp";
}
if (
head[0] === 0x52 && head[1] === 0x49 && head[2] === 0x46 && head[3] === 0x46
&& head[8] === 0x57 && head[9] === 0x45 && head[10] === 0x42 && head[11] === 0x50
head[0] === 0x52 &&
head[1] === 0x49 &&
head[2] === 0x46 &&
head[3] === 0x46 &&
head[8] === 0x57 &&
head[9] === 0x45 &&
head[10] === 0x42 &&
head[11] === 0x50
) {
return "image/webp";
}
@@ -54,8 +64,8 @@ async function fetchCombineBytes(
fileSizeKb: number,
): Promise<ArrayBuffer> {
const segments = orderKey.split("-");
const total
= Number.parseInt(segments[segments.length - 1].split(".")[0], 10) || 1;
const total =
Number.parseInt(segments[segments.length - 1].split(".")[0], 10) || 1;
const merged = new Uint8Array((fileSizeKb + 1) * 1024);
let offset = 0;
// 串行逐片：并发打多片旧系统没做、后端也没限流承诺，跟旧行为保持一致
@@ -118,7 +128,9 @@ export async function saveFileBytes(file: FileBytes): Promise<void> {
export function toPlayableUrl(file: FileBytes): string {
// #ifdef H5
// Blob 必须带 MIME：Chrome 会嗅探无 type 的 blob，Safari/部分微信内核不嗅探，直接黑图
return URL.createObjectURL(new Blob([file.bytes], { type: mimeOf(file.name) }));
return URL.createObjectURL(
new Blob([file.bytes], { type: mimeOf(file.name) }),
);
// #endif
// #ifndef H5
// #ifdef APP-PLUS