1.安装cropperjs依赖库
npm install cropperjs
2.编写组件SimpleCropper.vue
<template> <div> <slot> <button @click="upload">上传图片</button> </slot> <input ref="file" type="file" accept="image/*" @change="uploadChange"> <div ref="layer"> <div> <button @click="cancelHandle">取消</button> <button @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.webkitURL this.$refs['layer'].style.display = 'block' this.cropper.replace(URL.createObjectURL(file)) }, // 取消上传 cancelHandle () { this.cropper.reset() this.$refs['layer'].style.display = 'none' this.$refs['file'].value = '' }, // 确定上传 confirmHandle () { let cropBox = this.cropper.getCropBoxData() let scale = this.initParam['scale'] || 1 let cropCanvas = this.cropper.getCroppedCanvas({ width: cropBox.width * scale, height: cropBox.height * scale }) let imgData = cropCanvas.toDataURL('image/jpeg') let formData = new window.FormData() formData.append('fileType', this.initParam['fileType']) formData.append('img', imgData) formData.append('signId', this.$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
