自己开发的移动端拍照上传图片代码（自己总结收藏一下），我用的是pug+less语法，可以自己转成html+css，或者是.vue文件。
需要添加一个图片压缩库lrz

执行npm i lrz（推荐）
或者直接引入<script src="./dist/lrz.bundle.js"></script>

拍照并压缩上传.png

pug

ul.list-ul
  li.list-li(v-for="(customizationImg,index) in customizationOptions.images")
    a.list-link(@click='previewImage(customizationImg.url)')
      img(:src="customizationImg.url")
    li.list-li(v-show="customizationOptions.images.length!==5")
        img.upload-img(src="/assets/img/upload.png")
        input#choose-img(type="file",accept="image/jpg,image/jpeg,image/png",capture="camera",@change="onFileChangeCustomization")

less

.list-li {
    display: inline;
    margin: 0 5px;
    position: relative;
    .upload-img {
        width: 50px;
    }
    #choose-img {
        position: absolute;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        opacity: 0;
    }
    .delete {
        position: absolute;
        top: -30px;
        right: -8px;
        width: 15px;
        height: 15px;
        background-color: @golden-color;
        text-align: center;
        border-radius: 50%;
        i {
            position: absolute;
            top: 4px;
            left: 2px;
            font-size: 10px;
            color: #fff;
            text-align: center;
            line-height: 8px;
        }
    }
    img {
        width: 50px;
    }
}

js

data() {
        return {
            customizationOptions: []
        }
    },
methods: {
    onFileChangeCustomization(e) {
        let files = e.target.files || e.dataTransfer.files;
        if (!files.length) return;
        this.createImage(files, e);
    },
    createImage: function (file, e) {
        this.loading = true;
        return Promise.resolve()
            .then(() => {
                return lrz(file[0], {
                    width: 1000
                });
            })
            .then(() => {
                //服务器如果需要上传blob，就将base64转成blob再传
                // let blobImg = this.convertBase64UrlToBlob(rst.base64);
                this.customizationOptions.push({
                    url: rst.base64,
                    id: ''
                })
            })
            .finally(() => {
                // 清空文件上传控件的值
                e.target.value = null;
            });
    },
    previewImage(url) {
        this.cameraImgPreviewVisible = true;
        this.previewImg = url;
    },
    deleteImg(id, type) {
        this.loading = true;
        return Promise.resolve()
            .then(() => {
                return this.currentCustomization.customization.deleteImage(id);
            }).then(() => {
                this.loading = false;
            });
    },
    convertBase64UrlToBlob(urlData) {

        let bytes = window.atob(urlData.split(',')[1]); //去掉url的头，并转换为byte

        //处理异常,将ascii码小于0的转换为大于0
        let ab = new ArrayBuffer(bytes.length);
        let ia = new Uint8Array(ab);
        for (let i = 0; i < bytes.length; i++) {
            ia[i] = bytes.charCodeAt(i);
        }

        return new Blob([ab], {
            type: 'image/png'
        });
    }
}