1. 安装cropperjs依赖库
npm install cropperjs
2. 编写组件SimpleCropper.vue
<template><div class="v-simple-cropper"><slot><button @click="upload">上传图片</button></slot><input class="file" ref="file" type="file" accept="image/*" @change="uploadChange"><div class="v-cropper-layer" ref="layer"><div class="layer-header"><button class="cancel" @click="cancelHandle">取消</button><button class="confirm" @click="confirmHandle">裁剪</button></div><img ref="cropperImg"></div></div></template><script>import Cropper from 'cropperjs'import 'cropperjs/dist/cropper.min.css'export default {name: 'v-simple-cropper',props: {initParam: Object,successCallback: {type: Function,default: () => {}}},data () {return {cropper: {},filename: ''}},mounted () {this.init()},methods: {// 初始化裁剪插件init () {let cropperImg = this.$refs['cropperImg']this.cropper = new Cropper(cropperImg, {aspectRatio: 1 / 1,dragMode: 'move'})},// 点击上传按钮upload () {this.$refs['file'].click()},// 选择上传文件uploadChange (e) {let file = e.target.files[0]this.filename = file['name']let URL = window.URL || window.webkitURLthis.$refs['layer'].style.display = 'block'this.cropper.replace(URL.createObjectURL(file))},// 取消上传cancelHandle () {this.cropper.reset()this.$refs['layer'].style.display = 'none'this.$refs['file'].value = ''},// 确定上传confirmHandle () {let cropBox = this.cropper.getCropBoxData()let scale = this.initParam['scale'] || 1let cropCanvas = this.cropper.getCroppedCanvas({width: cropBox.width * scale,height: cropBox.height * scale})let imgData = cropCanvas.toDataURL('image/jpeg')let formData = new window.FormData()formData.append('fileType', this.initParam['fileType'])formData.append('img', imgData)formData.append('signId', this.$localStorage('signId'))formData.append('originalFilename', this.filename)window.$axios(this.initParam['uploadURL'], formData, {method: 'post',headers: {'Content-Type': 'multipart/form-data'}}).then(res => {this.successCallback(res.data)this.cancelHandle()})}}}</script><style lang="less">.v-simple-cropper {.file {display: none;}.v-cropper-layer {position: fixed;top: 0;bottom: 0;left: 0;right: 0;background: #fff;z-index: 99999;display: none;.layer-header {position: absolute;top: 0;left: 0;z-index: 99999;background: #fff;width: 100%;height: .8rem;padding: 0 .2rem;box-sizing: border-box;}.cancel,.confirm {line-height: .8rem;font-size: .28rem;background: inherit;border: 0;outline: 0;float: left;}.confirm {float: right;}img {position: inherit!important;border-radius: inherit!important;float: inherit!important;}}}</style>
3. 引用组件
<template><simple-cropper :initParam="uploadParam" :successCallback="uploadHandle" ref="cropper"><img :src="userImg" @click="upload"></simple-cropper></template><script>import SimpleCropper from '@/components/SimpleCropper'export default {name: 'info',data () {return {uploadParam: {fileType: 'recruit', // 其他上传参数uploadURL: this.$dataURL + 'uploadAction/qcloudImg', // 上传地址scale: 4 // 相对手机屏幕放大的倍数: 4倍},userImg: this.$dataURL + 'test.png'}},methods: {// 上传头像upload () {this.$refs['cropper'].upload()},// 上传头像成功回调uploadHandle (data) {if (data.state === 'SUCCESS') {this.userImg = this.form.headImgUrl = data.fileId}}},components: {SimpleCropper}}</script>
4. 示例图
