maintenance_system/src/views/materialManagement/components/upload.vue

<template>
  <div class="upload-file">
     <!-- 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 v-for="(file, index) in fileList" :key="file.uid" class="el-upload-list__item ele-upload-list__item-content">
        <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-button type="danger" v-if="!disabled" link @click="handleDelete(index)">删除</el-button>
        </div>
      </li>
    </transition-group>
    <el-upload
      ref="fileUploadRef"
      multiple
      :drag="isDrag"
      :action="uploadFileUrl"
      :before-upload="handleBeforeUpload"
      :file-list="fileList"
      :limit="limit"
      :accept="fileAccept"
      :on-error="handleUploadError"
      :on-exceed="handleExceed"
      :on-success="handleUploadSuccess"
      :show-file-list="false"
      :headers="headers"
      class="upload-file-uploader"
      v-if="!disabled"
    >
      <!-- 上传按钮 -->
      <el-button type="primary" v-if="!isDrag">选取文件</el-button>
      <div v-else>
        <el-icon class="el-icon--upload"><upload-filled /></el-icon>
        <div class="el-upload__text">
          拖拽文件到此处，或 <em>点击上传</em>
        </div>
      </div>
    </el-upload>
    <!-- 上传提示 -->
    <div v-if="showTip && !disabled" class="el-upload__tip">
      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>
  </div>
</template>

<script setup lang="ts">
import { propTypes } from '@/utils/propTypes';
import { delOss, listByIds } from '@/api/system/oss';
import { globalHeaders } from '@/utils/request';
import { ref } from 'vue';
const props = defineProps({
  modelValue: {
    type: [String, Object, Array],
    default: () => []
  },
  // 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', 'docx', 'xls', 'xlsx', 'ppt', 'pptx', 'txt', 'pdf']),
  // 是否显示提示
  isShowTip: propTypes.bool.def(true),
  // 禁用组件（仅查看文件）
  disabled: propTypes.bool.def(false),
  // 是否开启拖拽上传
  isDrag: propTypes.bool.def(false)
});

const { proxy } = getCurrentInstance() as ComponentInternalInstance;
const emit = defineEmits(['update:modelValue', 'update:fileList']);
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>();

// 暴露方法给父组件
defineExpose({
  // 清空所有文件
  clearAllFiles: () => {
    fileList.value = [];
    emit('update:modelValue', '');
    emit('update:fileList', []);
  }
});


// 监听 fileType 变化，更新 fileAccept
const fileAccept = computed(() => props.fileType.map((type) => `.${type}`).join(','));

watch(
  () => props.modelValue,
  async (val) => {
    if (val) {
      let temp = 1;
      // 首先将值转为数组
      let list: any[] = [];
      
      if (Array.isArray(val)) {
        // 如果是数组，检查第一个元素的格式
        if (val.length > 0 && val[0].fileName && val[0].fileId && val[0].fileUrl) {
          // 处理后端返回的格式 [{fileName,fileId,fileUrl}]
          list = val.map(item => ({
            name: item.fileName,
            url: item.fileUrl,
            ossId: item.fileId
          }));
        } else {
          // 处理组件内部格式 [{name,url,ossId}]
          list = val;
        }
      } else {
        // 处理字符串格式（逗号分隔的ossId）
        const res = await listByIds(val);
        list = res.data.map((oss) => {
          return { name: oss.originalName, url: oss.url, ossId: oss.ossId };
        });
      }
      
      // 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;
    }
  }
  // 校检文件名是否包含特殊字符
  if (file.name.includes(',')) {
    proxy?.$modal.msgError('文件名不正确，不能包含英文逗号!');
    return false;
  }
  // 校检文件大小
  if (props.fileSize) {
    const isLt = file.size / 1024 / 1024 < props.fileSize;
    if (!isLt) {
      proxy?.$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) => {
  const ossId = fileList.value[index].ossId;
  delOss(ossId);
  fileList.value.splice(index, 1);
  
  // 转换为后端需要的格式 [{fileName,fileId,fileUrl}]
  const formattedList = fileList.value.map(file => ({
    fileName: file.name,
    fileId: file.ossId,
    fileUrl: file.url
  }));
  
  emit('update:modelValue', formattedList);
};

// 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;
    
    // 转换为后端需要的格式 [{fileName,fileId,fileUrl}]
    const formattedList = fileList.value.map(file => ({
      fileName: file.name,
      fileId: file.ossId,
      fileUrl: file.url
    }));
    
    emit('update:modelValue', formattedList);
    emit('update:fileList', 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;
  }
};

</script>

<style lang="scss" scoped>
.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>