vue axios 接口请求封装

一、接口文件 src/api/file.js

import request from "@u/request";

/**
 * 文件上传
 * @param data {Object} formData对象 "file"
 * @returns {*}
 */
export function uploadFile(data) {
  return request({
    url: "/file/upload",
    method: "post",
    data: data,
    headers: {
      "Content-Type": "multipart/form-data;",
    },
    transformRequest: [
      function () {
        return data;
      },
    ],
  });
}

二、使用页面示例

<template>
  <div class="upload-container">
    <el-upload
      ref="uploadForm"
      :before-upload="beforeUpload"
      :http-request="uploadFile"
      :limit="limit"
      accept="image/png,image/jpg,image/jpeg"
      action="string"
      class="upload-demo"
      multiple
    >
      <el-button size="small" class="upload-btn" type="primary">
        <span class="iconfont icon-shangchuan" />上传文件
      </el-button>
    </el-upload>
  </div>
</template>

<script>
import { uploadFile } from "@i/file";

export default {
  name: "UploadFile",
  props: {
    limit: {
      type: Number,
      default: 1,
    },
  },
  data() {
    return {};
  },
  computed: {},
  methods: {
    // 上传文件
    uploadFile(item) {
      // 开始上传文件 新建一个formData
      const formData = new FormData();
      // 通过append向form对象添加数据
      formData.append("file", item.file);
      uploadFile(formData)
        .then((e) => {
          console.log("上传成功");
        })
        .catch((e) => {
          console.log("上传失败");
          this.clearFlies();
        });
    },
    // 移除上传图片列表
    clearFlies() {
      this.$refs.uploadForm.clearFiles();
    },
    // 上传文件之前
    beforeUpload(file) {
      const fileSuffix = file.name.substring(file.name.lastIndexOf(".") + 1);
      const extension1 = fileSuffix === "png";
      const extension2 = fileSuffix === "jpg";
      const extension3 = fileSuffix === "jpeg";
      const isLt2M = file.size / 1024 / 1024 < 0.5;

      if (!extension1 && !extension2 && !extension3) {
        this.$msg("上传文件只能是 png、jpg、jpeg格式", "error");
        return false;
      }

      if (!isLt2M) {
        this.$msg("上传文件大小不能超过 2MB", "error");
        return false;
      }
    },
  },
};
</script>

<style lang="scss" scoped>
.upload-container {
  .upload-demo {
    display: flex;

    .upload-btn {
      background-color: #525252;
      border: none;
    }
  }
}
</style>