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target/classes/views/mobile/condolence/pdf_preview.html

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+<!--#
+layout("/mobile/platform.html"){
+#-->
+
+<div id="app" v-cloak>
+    <van-nav-bar title="慰问品画册" left-arrow placeholder fixed
+                 @click-left="history.back()"></van-nav-bar>
+
+    <iframe v-if="pdfUrl" :src="pdfUrl"
+            style="width: 100%; height: calc(100vh - 46px); border: 0; display: block;"></iframe>
+    <van-empty v-else description="暂无预览文件"></van-empty>
+</div>
+
+<script>
+    var vue = new Vue({
+        el: '#app',
+        mixins: [mobileMixins],
+        data() {
+            return {
+                pdfUrl: ''
+            }
+        },
+        async created() {
+            const file = GetQueryString('file')
+            if (file) {
+                // 预览地址通过参数传入，使用当前页面 iframe 承载 PDF.js，保留应用返回导航。
+                this.$set(this, 'pdfUrl', '/assets/platform/plugins/pdfJs/web/viewer.html?file=' + file)
+            }
+        }
+    })
+</script>
+<!--#
+}
+#-->