沒有用插件就簡單的圖片上傳

頁面布局如下

<div class="input-up">
          <input
            type="file"
            accept="image/*"
            style="display:none"
            @change="changeImg()"
            name="upload_file"
            ref="input"
          />
          <div class="uploads" v-if="otherimg!=''" @click="upload">
            <img :src="otherimg" alt />
          </div>
          <div class="upload" v-else @click="upload">
            <span>+</span>
            <p>添加名片或相關圖片</p>
          </div>
 </div>

css樣式

.input-up {
  padding: 0.26rem 0.18rem;
}
.input-up .upload {
  width: 2.36rem;
  height: 1.4rem;
  border: 1px solid #f5f5f5;
}
.input-up .upload span {
  display: block;
  text-align: center;
  font-size: 0.6rem;
  color: #d8d8d8;
}
.input-up .uploads {
  width: 1.4rem;
  height: 1.4rem;
  border: 1px solid #f5f5f5;
}
.input-up .uploads img {
  display: block;
  width: 100%;
  height: 1.4rem;
}
.input-up .upload p {
  text-align: center;
  font-size: 0.2rem;
  color: #d8d8d8;
}

接口請求用的是axios

<script>
import { Toast } from 'mint-ui'  // mint-ui的彈窗提示
export default {
data () {
    return {
       customer_id:"",
       otherimg:"",
       imgData: [] // 選擇圖片保存數(shù)組
    }
},
methods: {
   //圖片change事件
   changeImg () {
      // 上傳圖片事件
      var files = this.$refs.input.files
      var that = this
      function readAndPreview (file) {
        if (file !== undefined) {
          if (/\.(jpe?g|png|gif)$/i.test(file.name)) {
            var reader = new FileReader()
            reader.onload = function (e) {
              // 避免重復上傳同個圖片
              if (that.imgData.indexOf(e.target.result) === -1) {
                that.imgData.push(e.target.result)
                that.otherimg = that.imgData.pop() //每次展示最后一個上傳的圖片
              } else {
                Toast('已有該圖片')
              }
            }
            reader.readAsDataURL(file)
          }
        }
      }
      readAndPreview(files[0])
      if (files.length === 0) {
        return false
      }
      console.log(that.imgData)
      that.uploadFile(files[0])  // 文件上傳服務器
    },
   // 圖片上傳接口
    uploadFile (file) {
      this.formData = new FormData()
      // 添加文件流
      this.formData.append('files', file, file.name) 
     //添加接口的參數(shù) 看需求傳或不傳
      this.formData.append('user_token', localStorage.getItem('user_token')) 
      this.formData.append('customer_id', this.customer_id)
      this.axios.post('/customerinfo/uploadImg',
       headers: {
           'Content-Type': 'multipart/form-data'
        },        
      this.formData    
      ).then(res => {
        if (res.code === 0) {
         //返回圖片的地址res.data
          this.otherimg = res.data
          Toast('上傳成功')
        }
      })
    },
    upload () {
      // 點擊觸發(fā)按鈕
      this.$refs.input.dispatchEvent(new MouseEvent('click'))
    }
  }
}