所用到的github图片裁剪插件地址在这
下面直接看例子吧！如需要更改组件UI可自行修改
在/components下新建/CropperImage/index.vue

<template>
  <div class="cropper-content">
    <div class="cropper-box">
      <div class="cropper" :style="`width:${width};height:${height}`">
        <vue-cropper
          :ref="refName"
          :img="option.img"
          :output-size="option.outputSize"
          :output-type="option.outputType"
          :info="option.info"
          :can-scale="option.canScale"
          :auto-crop="option.autoCrop"
          :auto-crop-width="autoCropWidth"
          :auto-crop-height="autoCropHeight"
          :fixed="option.fixed"
          :fixed-number="fixedNumber"
          :full="option.full"
          :fixed-box="option.fixedBox"
          :can-move="option.canMove"
          :can-move-box="option.canMoveBox"
          :original="option.original"
          :center-box="option.centerBox"
          :height="option.height"
          :info-true="option.infoTrue"
          :max-img-size="option.maxImgSize"
          :enlarge="enlarge"
          :mode="mode"
          @realTime="realTime"
          @imgLoad="imgLoad"
        />
      </div>
      <!--底部操作工具按钮-->
      <div class="footer-btn">
        <div class="scope-btn">
          <label class="btn" :for="refName">选择{{ name }}</label>
          <input
            :id="refName"
            type="file"
            style="position: absolute; clip: rect(0 0 0 0)"
            accept="image/png, image/jpeg, image/gif, image/jpg"
            @change="selectImg($event)"
          />
        </div>
        <div class="upload-btn">
          <el-button size="mini" type="success" @click="_uploadImg">
            上传{{ name }}
            <i class="el-icon-upload" />
          </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: {
    width: {
      default: "100%",
    },
    height: {
      default: "100%",
    },
    // 默认生成截图框宽度
    autoCropWidth: {
      default: 230,
    },
    // 默认生成截图框高度
    autoCropHeight: {
      default: 150,
    },
    fixedNumber: {
      default: [375, 245],
    },
    mode: {
      default: "375px 600px",
    },
    name: {
      default: "封面",
    },
    refName: {},
    enlarge: {
      default: 1,
    },
  },
  data() {
    return {
      option: {
        img: "", // 裁剪图片的地址
        outputSize: 0.8, // 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: false, // 图片是否允许滚轮缩放
        autoCrop: true, // 是否默认生成截图框
        fixed: true, // 是否开启截图框宽高固定比例
        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: true, // 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: true, // 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
      },
      previews: {},
    };
  },
  mounted() {},

  methods: {
    // 初始化函数
    imgLoad(msg) {},
    // 图片缩放
    // 实时预览函数
    realTime(data) {
      this.previews = data;
    },

    // 选择图片
    selectImg(e) {
      const 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blob
      const reader = new FileReader();
      reader.onload = (e) => {
        let data;
        if (typeof e.target.result === "object") {
          data = window.URL.createObjectURL(new Blob([e.target.result]));
        } else {
          data = e.target.result;
        }
        this.option.img = data;
      };
      // 转化为base64
      reader.readAsDataURL(file);
    },

    // 上传图片
    _uploadImg(type) {
      // 获取截图的blob数据
      this.$refs[this.refName].getCropData(async (data) => {
        this.$emit("uploadImgSuccess", data);
      });
    },
  },
};
</script>

<style scoped lang="scss">
.cropper-content {
  display: flex;
  display: -webkit-flex;
  justify-content: flex-end;
  .cropper-box {
    flex: 1;
    width: 100%;
    .cropper {
      width: auto;
      height: auto;
    }
  }

  .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;
  justify-content: space-between;
  .scope-btn {
    display: flex;
    justify-content: space-between;
    padding-right: 10px;
    .uploadBox {
      margin-right: 10px;
    }
  }
  .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: 0.1s;
    transition: 0.1s;
    font-weight: 500;
    padding: 8px 15px;
    font-size: 12px;
    border-radius: 3px;
    color: #fff;
    background-color: #409eff;
    border-color: #409eff;
    margin-right: 10px;
  }
}
</style>
<style scoped>
.cropper-content >>> .el-upload-dragger {
  width: 100%;
  height: 100%;
  border: none;
}
</style>

然后就可以在其他文件直接引入了

<template>
        <cropper-image
          :auto-crop-width="220"
          :auto-crop-height="220"
          :fixed-number="[220, 220]"
          ref-name="specificCropper"
          width="220px"
          height="220px"
          :mode="'220px 220px'"
          name="图片"
          :enlarge="5"
          @uploadImgSuccess="handleSpecific"
        />
</template>
<script>
    import CropperImage from "@/components/CropperImage/index";
    // 上传图片
    handleSpecific(data) {
      //data是本地的base64，然后调取后台的上传图片接口就可以了
    },
</script>