實現檔案上傳

把檔案上傳封裝成一個元件：

    <template v-if="fileId">
      <el-tag :closable="dealerStatus !== '2'" @close="deleteFile(fileId)">
        {{
        fileName
        }}
      </el-tag>
    </template>
    <template v-else>
      <el-upload
        v-if="dealerStatus !== '2'"
        class="avatar-uploader"
        :action="actionUrl"
        drag
        :before-upload="beforeUpload"
        accept=".jpg, .png, .jepg, .pdf"
        :show-file-list="false"
        :on-change="changeUpload"
      >
 

        <el-button type="primary" class="upload" plain>
          點選上傳
        </el-button>
      </el-upload>
    </template>

    beforeUpload(file) {
      console.log(this.fileCategory, "檔案型別");
      if (file) {
        console.log(file, "檔案結構");
        if (
          ["image/jpeg", "image/jpg", "image/png", "application/pdf"].indexOf(
            file.type
          ) 
 
=== -1
        ) {
          // if (file.name.indexOf('jpg') !== -1 || file.name.indexOf('png') !== -1 || file.name.indexOf('jepg') !== -1 || file.name.indexOf('pdf') !== -1) {
          this.$message.error("檔案格式錯誤");
          return false;
        }
        const formData = new FormData();
        formData.append(
 
"file", file);
        console.log(file, "檔名");
        CommonAPI.AsyncUpload(this.actionUrl, formData)
          .then((res) => {
            if (res.code === 200) {
              this.$emit(
                "fileUpload",
                {
                  fileCategory: this.fileCategory,
                  fileName: file.name,
                  filePath: res.data,
                  fileId: res.data,
                },
                this.index
              );

              console.log(res);
            } else {
              this.$message({
                type: "error",
                message: res.msg,
              });
            }
            // 根據返回 code
          })
          .catch((error) => {
            // debugger;
            console.log(error)
      }
      return false;
    },

介面檔案：

//上傳-匯入
const AsyncUpload = (url, data) => {
  return new Promise((resolve, reject) => {
    requestUpload({
      url: url,
      method: 'post',
      headers: {
        'Content-Type': 'multipart/form-data'
      },
      data
    }).then((res) => {
      resolve(res)
    }).catch((error) => {
      reject(error)
    })
  })
}