效果图

1.配置环境

npm install vue-cropper

2.代码

<template><div class="cropper-content"><div class="cropper-box"><div class="cropper"><vue-cropper ref="cropper" :img="option.img" :outputSize="option.outputSize" :outputType="option.outputType":info="option.info" :canScale="option.canScale" :autoCrop="option.autoCrop":autoCropWidth="option.autoCropWidth" :autoCropHeight="option.autoCropHeight" :fixed="option.fixed":fixedNumber="option.fixedNumber" :full="option.full" :fixedBox="option.fixedBox" :canMove="option.canMove":canMoveBox="option.canMoveBox" :original="option.original" :centerBox="option.centerBox":height="option.height" :infoTrue="option.infoTrue" :maxImgSize="option.maxImgSize" :enlarge="option.enlarge":mode="option.mode" @realTime="realTime" @imgLoad="imgLoad"></vue-cropper></div><!--底部操作工具按钮--><div class="footer-btn"><div class="scope-btn"><label class="btn" for="uploads">选择图片</label><input type="file" id="uploads" style="position:absolute; clip:rect(0 0 0 0);"accept="image/png, image/jpeg, image/gif, image/jpg" @change="selectImg($event)"><el-button size="mini" type="danger" plain icon="el-icon-zoom-in" @click="changeScale(1)">放大</el-button><el-button size="mini" type="danger" plain icon="el-icon-zoom-out" @click="changeScale(-1)">缩小</el-button><el-button size="mini" type="danger" plain @click="rotateLeft">↺ 左旋转</el-button><el-button size="mini" type="danger" plain @click="rotateRight">↻ 右旋转</el-button></div><div class="upload-btn"><el-button size="mini" type="success" @click="uploadImg('blob')">裁剪完毕 <i class="el-icon-upload"></i></el-button></div></div></div><!--预览效果图--><div class="show-preview"><div :style="previews.div" class="preview"><img :src="previews.url" :style="previews.img"></div></div></div>
</template><script>import {VueCropper} from 'vue-cropper'export default {name: "CropperImage",components: {VueCropper},props: ['Name'],data() {return {name: this.Name,previews: {},option: {img: '', //裁剪图片的地址outputSize: 1, //裁剪生成图片的质量(可选0.1 - 1)outputType: 'jpeg', //裁剪生成图片的格式（jpeg || png || webp）info: true, //图片大小信息canScale: true, //图片是否允许滚轮缩放autoCrop: true, //是否默认生成截图框autoCropWidth: 160, //默认生成截图框宽度autoCropHeight: 90, //默认生成截图框高度fixed: true, //是否开启截图框宽高固定比例fixedNumber: [1.77777, 1], //截图框的宽高比例full: false, //false按原比例裁切图片，不失真fixedBox: true, //固定截图框大小，不允许改变canMove: false, //上传图片是否可以移动canMoveBox: true, //截图框能否拖动original: false, //上传图片按照原始比例渲染centerBox: false, //截图框是否被限制在图片里面height: true, //是否按照设备的dpr 输出等比例图片infoTrue: false, //true为展示真实输出图片宽高，false展示看到的截图框宽高maxImgSize: 3000, //限制图片最大宽度和高度enlarge: 1, //图片根据截图框输出比例倍数mode: '100%' //图片默认渲染方式}};},methods: {//初始化函数imgLoad(msg) {console.log("工具初始化函数=====" + msg)},//图片缩放changeScale(num) {num = num || 1this.$refs.cropper.changeScale(num)},//向左旋转rotateLeft() {this.$refs.cropper.rotateLeft()},//向右旋转rotateRight() {this.$refs.cropper.rotateRight()},//实时预览函数realTime(data) {// console.log('实时预览图片的data:' + data);// console.log(data);this.previews = data},//选择图片selectImg(e) {let file = e.target.files[0]if (!/\.(jpg|jpeg|png|JPG|PNG)$/.test(e.target.value)) {this.$message({message: '图片类型要求：jpeg、jpg、png',type: "error"});return false}//转化为bloblet reader = new FileReader()reader.onload = (e) => {let dataif (typeof e.target.result === 'object') {data = window.URL.createObjectURL(new Blob([e.target.result]))} else {data = e.target.result}this.option.img = data //将创建的blob图片链接保存到数据里面，跟正常图片一样}//转化为base64reader.readAsDataURL(file)},//上传图片uploadImg(type) {let _this = this;if (type === 'blob') {//获取截图的blob数据this.$refs.cropper.getCropBlob((file) => {//得到裁剪以后的图片文件,方便使用this.$refs.cropper.getCropData((base64) => {//得到裁剪以后的base64图片，方便使用alert('裁剪完毕，请看代码里面的uploadImg函数里面教你的使用方法，懒狗记得看')            //如果你想使用file二进制文件上传！那么请用11111111里面的代码，尤其是formData这样的上传格式，否则上传失败//1111111111111111111111111111111111111111111111111111111111111111111111111// let formData = new FormData();// formData.append('file',data,"DX.jpg")// let {data: res} = await _this.$http.post('/api/file/imgUpload', formData)//1111111111111111111111111111111111111111111111111111111111111111111111111111//如果你用base64那用请用22222222//2222222222222222222222222222222222222222222222222222222222222222222//就正常post上传就行，这样都不会啊//22222222222222222222222222222222222222222222222222222222222222222})})}},},}
</script><style scoped lang="less">.cropper-content {display: flex;display: -webkit-flex;justify-content: flex-end;.cropper-box {flex: 1;width: 100%;.cropper {width: auto;height: 300px;}}.show-preview {flex: 1;-webkit-flex: 1;display: flex;display: -webkit-flex;justify-content: center;.preview {overflow: hidden;border: 1px solid #67c23a;background: #cccccc;}}}.footer-btn {margin-top: 30px;display: flex;display: -webkit-flex;justify-content: flex-end;.scope-btn {display: flex;display: -webkit-flex;justify-content: space-between;padding-right: 10px;}.upload-btn {flex: 1;-webkit-flex: 1;display: flex;display: -webkit-flex;justify-content: center;}.btn {outline: none;display: inline-block;line-height: 1;white-space: nowrap;cursor: pointer;-webkit-appearance: none;text-align: center;-webkit-box-sizing: border-box;box-sizing: border-box;outline: 0;-webkit-transition: .1s;transition: .1s;font-weight: 500;padding: 8px 15px;font-size: 12px;border-radius: 3px;color: #fff;background-color: #409EFF;border-color: #409EFF;margin-right: 10px;}}
</style>