前端vue+elementplus实现上传通用组件

上传组件：

<template>
  <div class="upload-file">
    <el-upload
      multiple
      :action="uploadFileUrl"
      :before-upload="handleBeforeUpload"
      :file-list="fileList"
      :limit="limit"
      :on-error="handleUploadError"
      :on-exceed="handleExceed"
      :on-success="handleUploadSuccess"
      :show-file-list="false"
      :headers="headers"
      class="upload-file-uploader"
      ref="fileUploadRef"
    >
      <!-- 上传按钮 -->
      <el-button type="primary">选取文件</el-button>
    </el-upload>
    <!-- 上传提示 -->
    <div class="el-upload__tip" v-if="showTip">
      请上传
      <template v-if="fileSize">
        大小不超过 <b style="color: #f56c6c">{{ fileSize }}MB</b>
      </template>
      <template v-if="fileType">
        格式为 <b style="color: #f56c6c">{{ fileType.join("/") }}</b>
      </template>
      的文件
    </div>
    <!-- 文件列表 -->
    <transition-group class="upload-file-list el-upload-list el-upload-list--text" name="el-fade-in-linear" tag="ul">
      <li :key="file.uid" class="el-upload-list__item ele-upload-list__item-content" v-for="(file, index) in fileList">
        <el-link :href="`${file.url}`" :underline="false" target="_blank">
          <span class="el-icon-document"> {{ getFileName(file.name) }} </span>
        </el-link>
        <div class="ele-upload-list__item-content-action">
          <el-link :underline="false" @click="handleDelete(index)" type="danger">删除</el-link>
        </div>
      </li>
    </transition-group>
  </div>
</template>

<script setup lang="ts">
import { listByIds, delOss } from "@/api/system/oss";
import { propTypes } from '@/utils/propTypes';
import { globalHeaders } from "@/utils/request";

const props = defineProps({
    modelValue: [String, Object, Array],
    // 数量限制
    limit: propTypes.number.def(5),
    // 大小限制(MB)
    fileSize: propTypes.number.def(5),
    // 文件类型, 例如['png', 'jpg', 'jpeg']
    fileType: propTypes.array.def(["doc", "xls", "ppt", "txt", "pdf"]),
    // 是否显示提示
    isShowTip: propTypes.bool.def(true),
});

const { proxy } = getCurrentInstance() as ComponentInternalInstance;
const emit = defineEmits(['update:modelValue']);
const number = ref(0);
const uploadList = ref<any[]>([]);

const baseUrl = import.meta.env.VITE_APP_BASE_API;
const uploadFileUrl = ref(baseUrl + "/resource/oss/upload"); // 上传文件服务器地址
const headers = ref(globalHeaders());

const fileList = ref<any[]>([]);
const showTip = computed(
    () => props.isShowTip && (props.fileType || props.fileSize)
);

const fileUploadRef = ref<ElUploadInstance>();

watch(() => props.modelValue, async val => {
    if (val) {
        let temp = 1;
        // 首先将值转为数组
        let list = [];
        if (Array.isArray(val)) {
            list = val;
        } else {
            const res = await listByIds(val as string)
            list = res.data.map((oss) => {
                const data = { name: oss.originalName, url: oss.url, ossId: oss.ossId };
                return data;
            });
        }
        // 然后将数组转为对象数组
        fileList.value = list.map(item => {
            item = { name: item.name, url: item.url, ossId: item.ossId };
            item.uid = item.uid || new Date().getTime() + temp++;
            return item;
        });
    } else {
        fileList.value = [];
        return [];
    }
}, { deep: true, immediate: true });

// 上传前校检格式和大小
const handleBeforeUpload = (file: any) => {
    // 校检文件类型
    if (props.fileType.length) {
        const fileName = file.name.split('.');
        const fileExt = fileName[fileName.length - 1];
        const isTypeOk = props.fileType.indexOf(fileExt) >= 0;
        if (!isTypeOk) {
            proxy?.$modal.msgError(`文件格式不正确, 请上传${props.fileType.join("/")}格式文件!`);
            return false;
        }
    }
    // 校检文件大小
    if (props.fileSize) {
        const isLt = file.size / 1024 / 1024 < props.fileSize;
        if (!isLt) {
            proxy?.$modal.msgError(`上传文件大小不能超过 ${props.fileSize} MB!`);
            return false;
        }
    }
    proxy?.$modal.loading("正在上传文件，请稍候...");
    number.value++;
    return true;
}

// 文件个数超出
const handleExceed = () => {
    proxy?.$modal.msgError(`上传文件数量不能超过 ${props.limit} 个!`);
}

// 上传失败
const handleUploadError = () => {
    proxy?.$modal.msgError("上传文件失败");
}

// 上传成功回调
const handleUploadSuccess = (res: any, file: UploadFile) => {
    if (res.code === 200) {
        uploadList.value.push({ name: res.data.fileName, url: res.data.url, ossId: res.data.ossId });
        uploadedSuccessfully();
    } else {
        number.value--;
        proxy?.$modal.closeLoading();
        proxy?.$modal.msgError(res.msg);
        fileUploadRef.value?.handleRemove(file);
        uploadedSuccessfully();
    }
}

// 删除文件
const handleDelete = (index: number) => {
    let ossId = fileList.value[index].ossId;
    delOss(ossId);
    fileList.value.splice(index, 1);
    emit("update:modelValue", listToString(fileList.value));
}

// 上传结束处理
const uploadedSuccessfully = () => {
    if (number.value > 0 && uploadList.value.length === number.value) {
        fileList.value = fileList.value.filter(f => f.url !== undefined).concat(uploadList.value);
        uploadList.value = [];
        number.value = 0;
        emit("update:modelValue", listToString(fileList.value));
        proxy?.$modal.closeLoading();
    }
}

// 获取文件名称
const getFileName = (name: string) => {
    // 如果是url那么取最后的名字 如果不是直接返回
    if (name.lastIndexOf("/") > -1) {
        return name.slice(name.lastIndexOf("/") + 1);
    } else {
        return name;
    }
}
// 对象转成指定字符串分隔
const listToString = (list: any[], separator?: string) => {
    let strs = "";
    separator = separator || ",";
    list.forEach(item => {
        if (item.ossId) {
            strs += item.ossId + separator;
        }
    })
    return strs != "" ? strs.substring(0, strs.length - 1) : "";
}
</script>

<style scoped lang="scss">
.upload-file-uploader {
    margin-bottom: 5px;
}

.upload-file-list .el-upload-list__item {
    border: 1px solid #e4e7ed;
    line-height: 2;
    margin-bottom: 10px;
    position: relative;
}

.upload-file-list .ele-upload-list__item-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: inherit;
}

.ele-upload-list__item-content-action .el-link {
    margin-right: 10px;
}
</style>

自定义组件：

<template>
  <div>
    <el-dialog @close="onClose"  :close-on-click-modal="false" :title="props.title" v-model="props.visible" append-to-body>
      <div>
<!--        <DropFileUpload v-if="form.zhuangtai == '0'" :file-size="100" v-model="form.wenJianId" :file-type="['pdf']" :limit="1"></DropFileUpload>-->
        <file-upload v-model="form.wenJianId" :file-type="['pdf']" :limit="5" :file-size="10" />
      </div>
      <el-table :data="shenBaoShuList">
        <el-table-column label="文件名称" align="left" prop="originalName">
          <template #default="scope">
            <el-link link type="primary" @click="handleShowPdfViewer(scope.row.ossId)"
            >{{
                scope.row.originalName
              }}
            </el-link>
          </template>
        </el-table-column>
        <el-table-column label="上传时间" width="200" align="center" prop="createTime" />
        <el-table-column label="操作" width="100" align="center">
          <template #default="scope">
            <el-button size="small" :disabled="form.zhuangtai == '1'" type="danger" @click="handleDelete(scope.row)" >删除</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-dialog>
    <el-drawer v-model="showPdfViewer.visible" :title="showPdfViewer.title" direction="rtl" size="60%">
      <oss-pdf-viewer v-if="showPdfViewer.visible" :oss-id="showPdfViewer.ossId"></oss-pdf-viewer>
    </el-drawer>
  </div>
</template>
<script setup lang="ts">
// 所有的专科
import DropFileUpload from '@/components/DropFileUpload/index.vue'

import ossPdfViewer from '@/components/PdfViewer/oss.vue';
import {defineEmits} from "vue";
import FileUpload from "@/components/FileUpload/index.vue";
import {SysOssVo} from '@/api/medicaltechnology/beianKeshiDetail/types';

const {proxy} = getCurrentInstance() as ComponentInternalInstance;
const {shenbaoshu_zhuangtai} = toRefs<any>(proxy?.useDict('shenbaoshu_zhuangtai'));
const emit = defineEmits<{

  (e: 'update:visible', value: boolean): void;
}>();
const shenBaoShuList = ref<SysOssVo[]>([]);
const form = ref({
  masterId:'',
  wenJianId: '',//可以上传多个文件,用，隔开
  zhuangtai: ''
});

interface ShowPdfViewer {
  title: string;
  ossId?: string | number;
  visible: boolean;
}

// 文件预览
const showPdfViewer = ref<ShowPdfViewer>({
  title: '',
  ossId: '',
  visible: false,
});
const props = defineProps({
  title: {
    type: String,
    default: ''
  },
  sbszhuangtai: {
    type: String,
    default: ''
  },
  visible: {
    type: Boolean,
    default: false
  },
  masterId: {
    type: [ Number],
    default: ''
  },
  type: {
    type: String,
    default: ''  //附件清单上传，科室上传，负责人上传 file,dept,leader
  }
});
const onClose = () => {

  emit('update:visible', false);

};
// 获取文件列表
const getFileList = async () => {
  console.log(props.masterId);
  //根据不同类型去获取文件列表
  shenBaoShuList.value = [];
  // const res = await getFileListByZhuBiaoId(props.zhuBiaoId as number);
  // if (res.data) { // 检查 res.data 是否为 null
  //   shenBaoShuList.value.push(res.data);
  // }
};

/** 删除按钮操作 */
const handleDelete = async (row?: SysOssVo) => {

  await proxy?.$modal.confirm('是否确认删除选择项？');
  //根据文件类型去删除
  // await deleteFileByFileId(row?.ossId || 0);
  proxy?.$modal.msgSuccess('删除成功');
  await getFileList();
};
//文件预览
const handleShowPdfViewer = (ossid: number) => {
  showPdfViewer.value.visible = true
  showPdfViewer.value.ossId = ossid
}
watch(() => form.value.wenJianId, () => {
  //根据文件类型触发上传
  // uploadZiPingFile(form.value.zhuBiaoId , form.value.wenJianId).then(() => {
  //   proxy?.$modal.msgSuccess('上传成功');
  //   getFileList()
  // })
})

watch(() => props.masterId, () => {

  // form.value.zhuangtai = props.sbszhuangtai
  form.value.masterId = props.masterId
  getFileList()
})
</script>
<style scoped lang="scss"></style>

页面实际调用：、

  <!--  上传附件的对话框-->
    <qing-dan-upload
      :sbszhuangtai="showOtherFiles.zhuangtai"
      :zhuBiaoId="showOtherFiles.zhuBiaoId"
      v-model:visible="showOtherFiles.visible"
      :title="showOtherFiles.title"
    ></qing-dan-upload>


//上传
const showOtherFiles = reactive({
  visible: false, //对话跨
  title: '', //标题
  masterId: 0,  //主表id
  type: ''
});
//上传清单附件
const openUploadFileDialog = (row: QingdanVO,type:string) => {
  showOtherFiles.visible = true;
  showOtherFiles.title = row?.cailiaoMingcheng + '附件';
  showOtherFiles.masterId = row?.masterId;
  showOtherFiles.type = type;
};

pdf预览组件：oss.vue

<template>
  <!--  {{pdfUrl}}-->
  <iframe :src="pdfUrl" style="border: none; width: 100%; height: 100%;"></iframe>
  <!--    <pdf-viewer :pdf-url="pdfUrl"></pdf-viewer>-->
</template>

<script setup name="OssPdfViewer" lang="ts">
const { proxy } = getCurrentInstance() as ComponentInternalInstance;
const props = defineProps({
  ossId: {
    type: [String , Number],
    required: true,
  },
});
const pdfUrl = ref('')
const handleDownload = () => {
  proxy?.$download.ossBlod(props.ossId).then(data=>{
    const blob = new Blob([data],{
      type:'application/pdf'
    })
    let url = window.URL.createObjectURL(blob)
    pdfUrl.value = url

  })
}
watch(()=>props.ossId,()=>{
  handleDownload()
})

onMounted(()=>{
  handleDownload()
})
</script>