vue a-upload组件上传图片,headers和data字段自定义

<div class="clearfix">
  <a-upload
    list-type="picture-card"
    :file-list="fileList"
    @preview="handlePreview"
    @change="handleChange"
    :before-upload="beforeUpload"
    :headers="headers"
    name="fileData"                    #传递的文件的请求参数名
    :action="url.upload"                #上传地址
    :data="{'appId':appId}"
    v-decorator="['coverImgUrl', validatorRules.coverImgUrl]"
  >
    <div v-if="fileList.length < 1">
      <a-icon type="plus"/>
      <div class="ant-upload-text">
        Upload
      </div>
    </div>
  </a-upload>
  <a-modal :visible="previewVisible" :footer="null" @cancel="handleCancelPic">
    <img alt="example" style="width: 100%" :src="previewImage"/>
  </a-modal>
</div>
 
import {ACCESS_TOKEN, TENANT_ID} from "@/store/mutation-types"
import Vue from 'vue'
import ProductTypeModal from './ProductTypeModal'
import ServiceTypeModal from './ServiceTypeModal'


function getBase64(file) {
    return new Promise((resolve, reject) => {
        const reader = new FileReader();
        reader.readAsDataURL(file);
        reader.onload = () => resolve(reader.result);
        reader.onerror = error => reject(error);
    });
}

export default {
    name: "ProductModal",
    components: {
        ProductTypeModal,
        ServiceTypeModal,
    },
    data() {
        return {
            appId: this.$parent.$parent.appId,//todo 父页面的appId
            ...
            },
            url: {
                ...
                upload: window._CONFIG['domianURL'] + "/admin/wxupload/upload", //上传图片
            },


            //上传图片
            previewVisible: false,
            previewImage: '',
            fileList: [],
            //本地token
            token: Vue.ls.get(ACCESS_TOKEN),
        }
    },
 
computed: {
//自定义请求头
    headers() {
        return {
            "appId": this.appId,
            "Authorization": 'authorization-text',
            "X-Access-Token": this.token,
        }
    }
},
 
 
 
//上传图片
handleCancelPic() {
    this.previewVisible = false;
},
async handlePreview(file) {
    if (!file.url && !file.preview) {
        file.preview = await getBase64(file.originFileObj);
    }
    this.previewImage = file.url || file.preview;
    this.previewVisible = true;
},
handleChange({fileList}) {
    this.fileList = fileList;
},
beforeUpload(file) {
    const isJpgOrPng = file.type === 'image/jpeg' || file.type === 'image/png' || file.type === 'image/jpg';
    if (!isJpgOrPng) {
        this.$message.error('上传图片的格式只能是 JPG或PNG 格式!');
    }
    // const isLt10M = file.size / 1024 / 1024 < 10;
    // if (!isLt10M) {
    //     this.$message.error('上传的图片需小于 10MB!');
    // }
    // return isJpgOrPng && isLt10M;
    const isLtSize = new Promise(function (resolve, reject) {
        let width = 300;
        let height = 300;
        let _URL = window.URL || window.webkitURL;
        let img = new Image();
        img.onload = function () {
            let valid = img.width <= width && img.height <= height;
            valid ? resolve() : reject();
        }
        img.src = _URL.createObjectURL(file);
    }).then(() => {
        return file;
    }, () => {
        this.$message.error('上传的图片尺寸最大300像素*300像素!');
        return Promise.reject();
    });
    return isJpgOrPng && isLtSize;
},