fix: 🐛 头像上传，文件上传问题
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H0nGzA1
171
web/src/components/avatarSelector/index.vue
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171
web/src/components/avatarSelector/index.vue
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<template>
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<div class="user-info-head" @click="editCropper()">
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<el-avatar :size="100" :src="options.img" />
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<el-dialog :title="title" v-model="open" width="600px" append-to-body @opened="modalOpened" @close="closeDialog">
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<el-row>
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<el-col class="flex justify-center">
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<vue-cropper
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ref="cropper"
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:img="options.img"
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:info="true"
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:autoCrop="options.autoCrop"
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:autoCropWidth="options.autoCropWidth"
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:autoCropHeight="options.autoCropHeight"
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:fixedBox="options.fixedBox"
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:outputType="options.outputType"
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@realTime="realTime"
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:centerBox="true"
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v-if="visible"
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class="cropper"
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/>
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</el-col>
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</el-row>
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<br />
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<el-row class="flex justify-center">
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<el-col :lg="2" :md="2">
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<el-upload action="#" :http-request="requestUpload" :show-file-list="false" :before-upload="beforeUpload">
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<el-button type="success">
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选择
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<el-icon class="el-icon--right"><Plus /></el-icon>
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</el-button>
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</el-upload>
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</el-col>
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<el-col :lg="{ span: 1, offset: 2 }" :md="2">
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<el-button icon="RefreshLeft" @click="rotateLeft()"></el-button>
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</el-col>
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<el-col :lg="{ span: 1, offset: 2 }" :md="2">
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<el-button icon="RefreshRight" @click="rotateRight()"></el-button>
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</el-col>
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<el-col :lg="{ span: 2, offset: 2 }" :md="2">
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<el-button type="primary" @click="uploadImg()">更新头像</el-button>
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</el-col>
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</el-row>
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</el-dialog>
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</div>
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</template>
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<script setup>
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import 'vue-cropper/dist/index.css';
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import { VueCropper } from 'vue-cropper';
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import { useUserInfo } from '/@/stores/userInfo';
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import { getCurrentInstance, nextTick, reactive, ref } from 'vue';
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import { base64ToFile } from '/@/utils/tools';
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const userStore = useUserInfo();
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const { proxy } = getCurrentInstance();
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const open = ref(false);
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const visible = ref(false);
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const title = ref('修改头像');
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const emit = defineEmits(['uploadImg']);
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//图片裁剪数据
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const options = reactive({
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img: userStore.userInfos.avatar, // 裁剪图片的地址
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autoCrop: true, // 是否默认生成截图框
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autoCropWidth: 200, // 默认生成截图框宽度
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autoCropHeight: 200, // 默认生成截图框高度
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fixedBox: true, // 固定截图框大小 不允许改变
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outputType: 'png', // 默认生成截图为PNG格式
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});
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/** 编辑头像 */
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function editCropper() {
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open.value = true;
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}
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/** 打开弹出层结束时的回调 */
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function modalOpened() {
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nextTick(() => {
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visible.value = true;
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});
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}
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/** 覆盖默认上传行为 */
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function requestUpload() {}
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/** 向左旋转 */
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function rotateLeft() {
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proxy.$refs.cropper.rotateLeft();
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}
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/** 向右旋转 */
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function rotateRight() {
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proxy.$refs.cropper.rotateRight();
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}
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/** 图片缩放 */
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function changeScale(num) {
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num = num || 1;
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proxy.$refs.cropper.changeScale(num);
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}
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/** 上传预处理 */
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function beforeUpload(file) {
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if (file.type.indexOf('image/') == -1) {
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proxy.$modal.msgError('文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。');
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} else {
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const reader = new FileReader();
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reader.readAsDataURL(file);
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reader.onload = () => {
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options.img = reader.result;
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};
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}
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}
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/** 上传图片 */
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function uploadImg() {
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// 获取截图的 base64 数据
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proxy.$refs.cropper.getCropData((data) => {
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let img = new Image();
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img.src = data;
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img.onload = async () => {
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let _data = compress(img);
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const imgFile = base64ToFile(_data, 'testname');
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emit('uploadImg', imgFile);
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};
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});
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}
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// 压缩图片
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function compress(img) {
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let canvas = document.createElement('canvas');
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let ctx = canvas.getContext('2d');
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// let initSize = img.src.length;
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let width = img.width;
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let height = img.height;
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canvas.width = width;
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canvas.height = height;
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// 铺底色
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ctx.fillStyle = '#fff';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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ctx.drawImage(img, 0, 0, width, height);
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// 进行压缩
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let ndata = canvas.toDataURL('image/jpeg', 0.8);
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return ndata;
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}
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/** 关闭窗口 */
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function closeDialog() {
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options.img = userStore.userInfos.avatar;
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options.visible = false;
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}
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</script>
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<style lang="scss" scoped>
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.user-info-head {
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position: relative;
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display: inline-block;
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height: 120px;
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}
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.user-info-head:hover:after {
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content: '修改头像';
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position: absolute;
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text-align: center;
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left: 0;
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right: 0;
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top: 0;
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bottom: 0;
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color: #000000;
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font-size: 20px;
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font-style: normal;
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cursor: pointer;
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line-height: 110px;
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}
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.cropper {
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height: 400px;
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width: 400px;
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}
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</style>
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