vue使用vueCropper裁剪功能，代码复制直接使用

//先安装包
npm install vue-cropper --save-dev

<template>
    <div id="merchantInformation">
        <div class="upData">
            <label class="btn btn-orange" for="uploads">上传LOGO</label>
            <input type="file" id="uploads" :value="imgFile" style="position:absolute; clip:rect(0 0 0 0);" accept="image/png, image/jpeg, image/gif, image/jpg" @change="uploadImgg($event, 1)">
                    <div class="line" >
                    <div class="cropper-content" >
                    <div class="cropper">
                        <vueCropper
                            ref="cropper"
                            :img="option.img"
                            :outputSize="option.size"
                            :outputType="option.outputType"
                            :info="true"
                            :full="option.full"
                            :canMove="option.canMove"
                            :canMoveBox="option.canMoveBox"
                            :original="option.original"
                            :autoCrop="option.autoCrop"
                            :autoCropWidth="option.autoCropWidth"
                            :autoCropHeight="option.autoCropHeight"
                            :fixedBox="option.fixedBox"
                            @realTime="realTime"
                            @imgLoad="imgLoad"
                        ></vueCropper>
                    </div>
                    <div style="margin-left:20px;">
                        <div class="show-preview" :style="{'width': '150px', 'height':'155px',  'overflow': 'hidden', 'margin': '5px'}">
                        <div :style="previews.div" class="preview">
                            <img :src="previews.url" :style="previews.img">
                        </div>
                        </div>
                    </div>
                    </div>
                </div>
        </div>
    </div>
</template>

<script>
import { VueCropper }  from 'vue-cropper'
export default {
    data(){
        return{
            crap: false,
            previews: {},
            option: {
                img: '',
                outputSize:1, //剪切后的图片质量（0.1-1）
                full: false,//输出原图比例截图 props名full
                outputType:'png',
                canMove: true,
                original: false,
                canMoveBox: true,
                autoCrop: true,
                autoCropWidth: 132,
                autoCropHeight: 132,
                fixedBox: true,
                fixedNumber: [1,1]
            },
            fileName:'',  //本机文件地址
            imgFile:'',
            imgurl:''
        }
    },
    components: {
      VueCropper
    },
    methods:{
    AddImg(){
        this.$refs.cropper.getCropBlob( data => {   //把裁剪后的数据上传给后台
            console.log(data)
        })
    },
        // 实时预览函数
    realTime(data) {
        this.previews = data
        console.log(this.previews)
      },
      //选择本地图片
    uploadImgg(e, num) {
        console.log('uploadImg');
        var _this = this;
        //上传图片
        var file = e.target.files[0];
        _this.fileName = file.name;
        if (!/\.(gif|jpg|jpeg|png|bmp|GIF|JPG|PNG)$/.test(e.target.value)) {
            this.$message({
                message: '图片类型必须是.gif,jpeg,jpg,png,bmp中的一种',
                type: 'warning'
            });
        return false
        }
        var reader = new FileReader();
        reader.onload =(e) => {
        let data;
        if (typeof e.target.result === 'object') {
            // 把Array Buffer转化为blob 如果是base64不需要
            data = window.URL.createObjectURL(new Blob([e.target.result]))
        }
        else {
            data = e.target.result
        }
        if (num === 1) {
            _this.option.img = data
        } else if (num === 2) {
            _this.example2.img = data
        }
        }
        // 转化为base64
        // reader.readAsDataURL(file)
        // 转化为blob
        reader.readAsArrayBuffer(file);
      },
    imgLoad (msg) {
        console.log('imgLoad')
        console.log(msg)
      }
    }
}
</script>

<style lang="less">
    .input_text .el-cascader .el-input .el-input__inner{width: 477px;height: 40px;border: 1px solid #f1f1f1;}
    .input_text .el-select .el-input .el-input__inner{width: 477px;height: 40px;border: 1px solid #f1f1f1;}
    #merchantInformation .upload-demo{display: flex;}
    #merchantInformation .upload-demo li{width: 100px;height: 113px;margin-top: 0px;display: inline-block;}
    #merchantInformation .el-date-editor.el-input, .el-date-editor .el-input__inner{width: 477px;height: 40px;}
   #merchantInformation .upload-demo .el-upload-list{display: none;}
</style>

<style lang="less" scoped>
#merchantInformation{
    height: 925px;width:890px;box-shadow: 0px 0px 1px #dfdddd;background:#fff;overflow: hidden;
}
.uploadingLogo{margin-right: 80px;}
// .uploadingLogoa{margin-right: 70px;}
.logoUrl{max-width: 300px;border-radius: 10px;}
.propagandaUrl{width: 265px;height: 177px;}
.amendd{position: absolute;right: 90px;top: 12px;cursor: pointer;display: flex;align-items: center;color: #1c8cfa;}
.uploadImga{width: 100px;height: 90px;margin-top: 10px;}

.perfect{color: #1c8cfa;font-size: 14px;display: flex;justify-content: center;flex-wrap:wrap;
    p{cursor: pointer;width: 100%;text-align: center;margin-top: 10px;}
}
.logo_I{width: 100px;height: 100px;}
.UploadPictures_IMG{width: 120px;height: 100px;margin-left: 20px;}
.hintsize{font-size: 12px;color: #343435;}
.info {
    width: 720px;
    margin: 0 auto;
    .oper-dv {
      height:20px;
      text-align:right;
      margin-right:100px;
      a {
        font-weight: 500;
        &:last-child {
          margin-left: 30px;
        }
      }
    }
    .info-item {
      margin-top: 15px;
      label {
        display: inline-block;
        width: 100px;
        text-align: right;
      }
      .sel-img-dv {
        position: relative;
        .sel-file {
          position: absolute;
          width: 90px;
          height: 30px;
          opacity: 0;
          cursor: pointer;
          z-index: 2;
        }
        .sel-btn {
          position: absolute;
          cursor: pointer;
          z-index: 1;
        }
      }
    }
  }

  .cropper-content{
    display: flex;
    .cropper{
      width: 200px;
      height: 200px;
    }
    .show-preview{
      width: 132px !important;height: 135px !important;
      flex: 1;
      -webkit-flex: 1;
      display: flex;

      .preview{
        overflow: hidden;
        border-radius: 20px;
        border:1px solid #cccccc;
        background: #cccccc;
        margin-left: 40px;
      }
    }
  }
  .cropper-content .show-preview .preview {margin-left: 0;}
  .btn-orange{width: 100px;height: 40px;display: block;line-height: 40px;background: #1c8cfa;color: #fff;text-align: center;
    border-radius: 10px;margin-right: 30px;
    }
.upData{display: flex;align-items: center;margin-top: 20px;

}
.line{margin-left: 21px;}

</style>