vue图片上传功能实现

蔚落 2024-04-18 22:14 9阅读 0赞

//html部分
    <template>
        <div class="form-group">
          <label class="control-label">上传图片</label>
          <div class="control-form">
            <p class="help-block">(建议图片格式为：JPEG/BMP/PNG/GIF，大小不超过5M，最多可上传4张)</p>
            <ul class="upload-imgs">
              <li v-if="imgLen>=4 ? false : true">
                <input type="file" class="upload" @change="addImg" ref="inputer" multiple accept="image/png,image/jpeg,image/gif,image/jpg"/>
                <a class="add"><i class="iconfont icon-plus"></i><p>点击上传</p></a>
              </li>
              <li v-for='(value, key) in imgs'>
                <p class="img"><img :src="getObjectURL(value)"><a class="close" @click="delImg(key)">×</a></p>
              </li>
            </ul>
          </div>
        </div>
    </template>
    //js部分
    <script>
      export default {
        data() {
          return {
            formData:new FormData(),
            imgs: {},
            imgLen:0,
          }
        },
        methods: {
          addImg(event){
            let inputDOM = this.$refs.inputer;
            // 通过DOM取文件数据
            this.fil = inputDOM.files;
            let oldLen=this.imgLen;
            let len=this.fil.length+oldLen;
            if(len>4){
              alert('最多可上传4张，您还可以上传'+(4-oldLen)+'张');
              return false;
            }
            for (let i=0; i < this.fil.length; i++) {
              let size = Math.floor(this.fil[i].size / 1024);
              if (size > 5*1024*1024) {
                alert('请选择5M以内的图片！');
                return false
              }
              this.imgLen++;
              this.$set(this.imgs,this.fil[i].name+'?'+new Date().getTime()+i,this.fil[i]);
            }
          },
          getObjectURL(file) {
            var url = null ;
            if (window.createObjectURL!=undefined) { // basic
              url = window.createObjectURL(file) ;
            } else if (window.URL!=undefined) { // mozilla(firefox)
              url = window.URL.createObjectURL(file) ;
            } else if (window.webkitURL!=undefined) { // webkit or chrome
              url = window.webkitURL.createObjectURL(file) ;
            }
            return url ;
          },
          delImg(key){
            this.$delete(this.imgs,key);
            this.imgLen--;
          },
          submit(){
            for(let key in this.imgs){
              let name=key.split('?')[0];
              this.formData.append('multipartFiles',this.imgs[key],name);
            }
            this.$http.post('/opinion/feedback', this.formData,{
              headers: {'Content-Type': 'multipart/form-data'}
            }).then(res => {
              this.alertShow=true;
            });
          },
        }
      }
    </script>
    //css部分
    .upload-imgs{margin: 10px 0 30px 0;overflow: hidden;font-size: 0;}
    .upload-imgs li{position: relative;width: 118px;height: 118px;font-size: 14px;display: inline-block;padding: 10px;margin-right: 25px;border: 2px dashed #ccc;text-align: center;vertical-align: middle;}
    .upload-imgs li:hover{border-color: $them-color;}
    .upload-imgs .add{display: block;background-color: #ccc;color: #ffffff;height: 94px;padding: 8px 0;}
    .upload-imgs .add .iconfont{padding: 10px 0;font-size: 40px;}
    .upload-imgs li:hover .add{background-color: $them-color;}
    .upload-imgs li .upload{position: absolute;top: 0;bottom: 0;left: 0;right: 0;width: 118px;height: 118px;}
    .upload-imgs .img{position: relative;width: 94px;height: 94px;line-height: 94px;}
    .upload-imgs .img img{vertical-align: middle;}
    .upload-imgs .img .close{display: none;}
    .upload-imgs li:hover .img .close{display: block;position: absolute;right: -6px;top: -10px;line-height: 1;font-size: 22px;color: #aaa;}

转载自文章[https://www.cnblogs.com/conglvse/p/9524452.html][https_www.cnblogs.com_conglvse_p_9524452.html]

[https_www.cnblogs.com_conglvse_p_9524452.html]: https://www.cnblogs.com/conglvse/p/9524452.html