certPreview.vue
2.86 KB
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<template>
<view class="preview-container">
<!-- 加载提示 -->
<view class="loading-tip" v-if="loading">
<view class="loading-icon"></view>
<text>加载中...</text>
</view>
<!-- 错误提示 -->
<view class="error-tip" v-else-if="showError">
<text class="error-icon">⚠️</text>
<text class="error-text">{{ errorMsg }}</text>
<view class="retry-btn" @click="retryLoad">重试</view>
</view>
<!-- 方式1：使用 web-view（备选） -->
<web-view
v-if="pdfUrl && !showError && useWebView"
:src="pdfUrl"
@message="onWebViewMessage"
></web-view>
</view>
</template>
<script setup>
import { ref } from "vue";
import { onLoad } from "@dcloudio/uni-app";
import { previewAttachment } from '@/common/utils.js'
const pdfUrl = ref("");
const loading = ref(false);
const showError = ref(false);
const errorMsg = ref("");
const useWebView = ref(false); // 是否使用 web-view 降级方案
const currentUrl = ref('')
onLoad((option) => {
if (option.url) {
currentUrl.value = decodeURIComponent(option.url);
openAttachment(currentUrl.value);
} else {
loading.value = false;
showError.value = true;
errorMsg.value = "参数错误";
}
});
const openAttachment = (url) => {
showError.value = false;
errorMsg.value = "";
loading.value = false;
previewAttachment(url, { title: '证书预览' })
};
// web-view 消息接收（可选）
const onWebViewMessage = (e) => {
console.log("web-view message:", e.detail);
};
// 重试加载
const retryLoad = () => {
showError.value = false;
loading.value = false;
useWebView.value = false;
errorMsg.value = "";
if (currentUrl.value) openAttachment(currentUrl.value);
};
</script>
<style lang="scss" scoped>
.preview-container {
width: 100vw;
height: 100vh;
background: #f5f5f5;
position: relative;
}
.loading-tip {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
display: flex;
flex-direction: column;
align-items: center;
gap: 20rpx;
.loading-icon {
width: 60rpx;
height: 60rpx;
border: 4rpx solid #e0e0e0;
border-top-color: #AD181F;
border-radius: 50%;
animation: rotate 1s linear infinite;
}
text {
font-size: 28rpx;
color: #666;
}
}
@keyframes rotate {
from {
transform: rotate(0deg);
}
to {
transform: rotate(360deg);
}
}
.error-tip {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
display: flex;
flex-direction: column;
align-items: center;
gap: 20rpx;
.error-icon {
font-size: 80rpx;
}
.error-text {
font-size: 28rpx;
color: #C40F18;
}
.retry-btn {
margin-top: 30rpx;
padding: 16rpx 40rpx;
background: #AD181F;
color: #fff;
border-radius: 40rpx;
font-size: 28rpx;
}
}
web-view {
width: 100%;
height: 100%;
}
</style>