Vue项目图片剪切上传——vue-cropper的使用(二)

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vue-cropper例子

 

真实例子

<template>
  <div class="cutimg">

    <vueCropper
      ref="cropper"
      :img="option.img"
      :outputSize="option.size"
      :outputType="option.outputType"
      :info="true"
      :full="option.full"
      :canMove="option.canMove"
      :canMoveBox="option.canMoveBox"
      :fixedBox="option.fixedBox"
      :original="option.original"
      :autoCrop="option.autoCrop"
      :autoCropWidth="option.autoCropWidth"
      :autoCropHeight="option.autoCropHeight"
      @realTime="realTime"
    ></vueCropper>
    <a @click="down()" class="btn">download(base64)</a>
    <a @click="down()" class="btn">download(blob)</a>
    <label class="btn" for="uploads">upload</label>
    <el-button @click="upupup">上传</el-button>
    <input type="file" id="uploads" style="position:absolute; clip:rect(0 0 0 0);"
           accept="image/png, image/jpeg, image/gif, image/jpg" @change="uploadImg($event)">
    <div class="show-preview"
         :style="{'width': previews.w + 'px', 'height': previews.h + 'px',  'overflow': 'hidden', 'margin': '5px'}">
      <div :style="previews.div">
        <img :src="previews.url" :style="previews.img">
      </div>
    </div>
    <img :src="downImg"/>
  </div>
</template>
<script>
  import axios from 'axios/index'
  import util from '@/utils/util'

  export default {
    props: {
      uploadProps: {
        type: Object,
        validator(value) {
          const keys = Object.keys(value);
          if (!Object.keys(value).includes("action")) {
            throw "action url is required";
          }
          return true;
        }
      }
    },
    data() {
      return {
        previews: {},
        downImg: '',
        fileName: null,
        option: {
          img: 'https://fengyuanchen.github.io/cropper/images/picture.jpg',
          size: 1,
          full: false,
          outputType: 'png',
          canMove: false,
          fixedBox: false,
          original: false,
          canMoveBox: true,
          autoCrop: true,
          autoCropWidth: 750,
          autoCropHeight: 200
        },
      }
    },
    methods: {
      // 实时预览函数
      realTime(data) {
        this.previews = data
      },
      uploadImg(e) {
        console.log(e)

        //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)) {
          alert('图片类型必须是.gif,jpeg,jpg,png,bmp中的一种')
          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
          }
          this.option.img = data
        }

        // 转化为blob
        reader.readAsArrayBuffer(file);
      },

      down() {
        this.$refs.cropper.getCropBlob((data) => {
          this.downImg = window.URL.createObjectURL(data)
          var reader = new FileReader();
          reader.readAsArrayBuffer(data);

        })
      },
      upupup() {

        let formData = new FormData();
        this.$refs.cropper.getCropBlob((data) => {
          let img = window.URL.createObjectURL(data)
          this.model = true;
          this.modelSrc = img;
          formData.append("file", data, this.fileName);
          console.log(formData)
          let config = {
            headers: {
              'Content-Type': 'application/x-www-form-urlencoded'
            }
          }
          axios.post(process.env.BASE_URL + '/oss/upload', formData, config).then((res) => {
            console.log(res)
          })
        })

      },


    }
  }
</script>
<style scoped>
  .vue-cropper {
    height: 500px;
  }

  .btn {
    background: #86a6ff;
  }
</style>