优化图片上传
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不做码农
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@ -1,190 +1,186 @@
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<template>
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<el-upload :action="uploadImgUrl" :on-success="handleUploadSuccess" :before-upload="handleBeforeUpload" :on-exceed="handleExceed"
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:on-remove="handleRemove" :on-error="handleUploadError" name="file" :show-file-list="true" :limit="limit" :file-list="fileList"
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:on-preview="handlePictureCardPreview" :class="{hide: fileList.length >= limit}" list-type="picture-card" :headers="headers">
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<el-icon class="el-icon--upload">
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<Plus />
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</el-icon>
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<div class="component-upload-image">
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<el-upload
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multiple
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:action="uploadImgUrl"
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list-type="picture-card"
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:on-success="handleUploadSuccess"
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:before-upload="handleBeforeUpload"
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:limit="limit"
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:on-error="handleUploadError"
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:on-exceed="handleExceed"
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name="file"
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:data="data"
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:on-remove="handleRemove"
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:show-file-list="true"
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:headers="headers"
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:file-list="fileList"
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:on-preview="handlePictureCardPreview"
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:class="{ hide: fileList.length >= limit }"
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>
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<el-icon class="avatar-uploader-icon"><plus /></el-icon>
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</el-upload>
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<!-- 上传提示 -->
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<template #tip>
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<div class="el-upload__tip">
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请上传
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<template v-if="fileSize">大小不超过<b style="color: #f56c6c">{{ fileSize }}MB</b> </template>
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<template v-if="fileType">格式为 <b style="color: #f56c6c">{{ fileType.join("/") }}</b> </template>
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的文件
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</div>
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</template>
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</el-upload>
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<el-dialog v-model="dialogVisible" title="预览" width="800" append-to-body>
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<img :src="dialogImageUrl" style="display: block; max-width: 100%; margin: 0 auto" />
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</el-dialog>
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<div class="el-upload__tip" v-if="showTip">
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请上传
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<template v-if="fileSize">
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大小不超过 <b style="color: #f56c6c">{{ fileSize }}MB</b>
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</template>
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<template v-if="fileType">
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格式为 <b style="color: #f56c6c">{{ fileType.join('/') }}</b>
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</template>
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的文件
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</div>
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<el-dialog v-model="dialogVisible" title="预览" width="800px" append-to-body>
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<img :src="dialogImageUrl" style="display: block; max-width: 100%; margin: 0 auto" />
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</el-dialog>
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</div>
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</template>
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<script>
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import { getToken } from "@/utils/auth";
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import { getCurrentInstance, watch } from "vue";
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<script setup>
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import { getToken } from '@/utils/auth'
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export default {
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name: "uploadImage",
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emits: ["input"],
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props: {
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modelValue: [String, Object, Array],
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// 图片数量限制
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limit: {
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type: Number,
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default: 1,
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},
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// 大小限制(MB)
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fileSize: {
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type: Number,
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default: 5,
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},
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// 文件类型, 例如['png', 'jpg', 'jpeg']
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fileType: {
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type: Array,
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default: () => ["png", "jpg", "jpeg"],
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},
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// 是否显示提示
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isShowTip: {
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type: Boolean,
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default: true,
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},
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// 上传地址
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uploadUrl: {
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type: String,
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default: import.meta.env.VITE_APP_UPLOAD_URL ?? "/Common/UploadFile",
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},
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column: [String],
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const props = defineProps({
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modelValue: [String, Object, Array],
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// 图片数量限制
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limit: {
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type: Number,
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default: 5,
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},
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setup(props, ctx) {
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const { proxy } = getCurrentInstance();
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const dialogImageUrl = ref("");
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const dialogVisible = ref(false);
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const baseUrl = import.meta.env.VITE_APP_BASE_API;
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const uploadImgUrl = ref(baseUrl + props.uploadUrl); // 上传的图片服务器地址
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const headers = ref({ Authorization: "Bearer " + getToken() });
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const fileList = ref([]);
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const showTip = computed(
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() => props.isShowTip && (props.fileType || props.fileSize)
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);
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watch(
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() => props.modelValue,
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(val) => {
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if (val) {
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// 首先将值转为数组
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const list = Array.isArray(val) ? val : props.modelValue.split(",");
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// 然后将数组转为对象数组
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fileList.value = list.map((item) => {
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if (typeof item === "string") {
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item = { name: item, url: item };
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}
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return item;
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});
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} else {
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fileList.value = [];
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return [];
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}
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},
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{
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immediate: true,
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deep: true,
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}
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);
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// 删除图片
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function handleRemove(file, files) {
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const findex = fileList.value.map((f) => f.name).indexOf(file.name);
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if (findex > -1) {
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fileList.value.splice(findex, 1);
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ctx.emit("input", props.column, listToString(fileList.value));
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}
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}
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// 上传成功回调
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function handleUploadSuccess(res) {
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console.log(res);
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fileList.value.push({ name: res.data.fileName, url: res.data.url });
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ctx.emit("input", props.column, listToString(fileList.value));
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proxy.$modal.closeLoading();
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}
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// 上传前loading加载
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function handleBeforeUpload(file) {
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let isImg = false;
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if (props.fileType.length) {
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let fileExtension = "";
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if (file.name.lastIndexOf(".") > -1) {
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fileExtension = file.name.slice(file.name.lastIndexOf(".") + 1);
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}
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isImg = props.fileType.some((type) => {
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if (file.type.indexOf(type) > -1) return true;
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if (fileExtension && fileExtension.indexOf(type) > -1) return true;
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return false;
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});
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} else {
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isImg = file.type.indexOf("image") > -1;
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}
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if (!isImg) {
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proxy.$modal.msgError(
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`文件格式不正确, 请上传${props.fileType.join("/")}图片格式文件!`
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);
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return false;
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}
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if (props.fileSize) {
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const isLt = file.size / 1024 / 1024 < props.fileSize;
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if (!isLt) {
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proxy.$modal.msgError(
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`上传头像图片大小不能超过 ${props.fileSize} MB!`
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);
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return false;
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}
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}
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proxy.$modal.loading("上传中");
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}
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// 文件个数超出
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function handleExceed() {
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proxy.$modal.msgError(`上传文件数量不能超过 ${props.limit} 个!`);
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}
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// 上传失败
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function handleUploadError() {
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proxy.$modal.msgError("上传失败");
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proxy.$modal.closeLoading();
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}
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// 预览
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function handlePictureCardPreview(file) {
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dialogImageUrl.value = file.url;
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dialogVisible.value = true;
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}
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// 对象转成指定字符串分隔
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function listToString(list, separator) {
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let strs = "";
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separator = separator || ",";
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for (let i in list) {
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strs += list[i].url.replace(baseUrl, "") + separator;
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}
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return strs != "" ? strs.substr(0, strs.length - 1) : "";
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}
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return {
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dialogImageUrl,
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dialogVisible,
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uploadImgUrl,
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headers,
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fileList,
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showTip,
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handleRemove,
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handleUploadSuccess,
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handleBeforeUpload,
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handleExceed,
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handleUploadError,
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handlePictureCardPreview,
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};
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// 大小限制(MB)
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fileSize: {
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type: Number,
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default: 5,
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},
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};
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</script>
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// 文件类型, 例如['png', 'jpg', 'jpeg']
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fileType: {
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type: Array,
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default: () => ['png', 'jpg', 'jpeg'],
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},
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// 是否显示提示
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isShowTip: {
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type: Boolean,
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default: true,
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},
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// 上传携带的参数
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data: {
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type: Object,
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},
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})
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const { proxy } = getCurrentInstance()
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const emit = defineEmits()
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const number = ref(0)
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const uploadList = ref([])
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const dialogImageUrl = ref('')
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const dialogVisible = ref(false)
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const baseUrl = import.meta.env.VITE_APP_BASE_API
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const uploadImgUrl = ref(baseUrl + import.meta.env.VITE_APP_UPLOAD_URL ?? '/Common/UploadFile') // 上传的图片服务器地址
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const headers = ref({ Authorization: 'Bearer ' + getToken() })
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const fileList = ref([])
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const showTip = computed(() => props.isShowTip && (props.fileType || props.fileSize))
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watch(
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() => props.modelValue,
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(val) => {
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if (val) {
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// 首先将值转为数组
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const list = Array.isArray(val) ? val : props.modelValue.split(',')
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// 然后将数组转为对象数组
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fileList.value = list.map((item) => {
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if (typeof item === 'string') {
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if (item.indexOf(baseUrl) === -1) {
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item = { name: baseUrl + item, url: baseUrl + item }
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} else {
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item = { name: item, url: item }
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}
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}
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return item
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})
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} else {
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fileList.value = []
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return []
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}
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},
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{ deep: true, immediate: true },
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)
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// 删除图片
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function handleRemove(file, files) {
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emit('update:modelValue', listToString(fileList.value))
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}
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// 上传成功回调
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function handleUploadSuccess(res) {
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uploadList.value.push({ name: res.data.fileName, url: res.data.url })
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if (uploadList.value.length === number.value) {
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fileList.value = fileList.value.concat(uploadList.value)
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uploadList.value = []
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number.value = 0
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emit('update:modelValue', listToString(fileList.value))
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// emit('success', listToString(fileList.value))
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proxy.$modal.closeLoading()
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}
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}
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// 上传前loading加载
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function handleBeforeUpload(file) {
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let isImg = false
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if (props.fileType.length) {
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let fileExtension = ''
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if (file.name.lastIndexOf('.') > -1) {
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fileExtension = file.name.slice(file.name.lastIndexOf('.') + 1)
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}
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isImg = props.fileType.some((type) => {
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if (file.type.indexOf(type) > -1) return true
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if (fileExtension && fileExtension.indexOf(type) > -1) return true
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return false
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})
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} else {
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isImg = file.type.indexOf('image') > -1
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}
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if (!isImg) {
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proxy.$modal.msgError(`文件格式不正确, 请上传${props.fileType.join('/')}图片格式文件!`)
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return false
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}
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if (props.fileSize) {
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const isLt = file.size / 1024 / 1024 < props.fileSize
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if (!isLt) {
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proxy.$modal.msgError(`上传头像图片大小不能超过 ${props.fileSize} MB!`)
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return false
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}
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}
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proxy.$modal.loading('正在上传图片，请稍候...')
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number.value++
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}
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// 文件个数超出
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function handleExceed() {
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proxy.$modal.msgError(`上传文件数量不能超过 ${props.limit} 个!`)
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}
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// 上传失败
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function handleUploadError() {
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proxy.$modal.msgError('上传图片失败')
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proxy.$modal.closeLoading()
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}
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// 预览
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function handlePictureCardPreview(file) {
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dialogImageUrl.value = file.url
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dialogVisible.value = true
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}
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// 对象转成指定字符串分隔
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function listToString(list, separator) {
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let strs = ''
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separator = separator || ','
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for (let i in list) {
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if (undefined !== list[i].url && list[i].url.indexOf('blob:') !== 0) {
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strs += list[i].url.replace(baseUrl, '') + separator
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}
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}
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return strs != '' ? strs.substr(0, strs.length - 1) : ''
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}
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</script>
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