i-image-upload v1.0.2

i-image-upload vue图片上传组件

vue picture component. Resize and preview your uploaded image

使用指南

import iImageUpload from 'i-image-upload'
import 'i-image-upload/dist/i-image-upload.css'

Vue.use(iImageUpload)

i-image-upload 代码演示

普通表单上传

可以在组件内部添加子节点传入自定义的上传按钮类型和文字提示

<form 
  action="http://localhost:1400/avatar" 
  method="post" 
  enctype="multipart/form-data"
>
  <i-image-upload name="file">
    <i class="demo-icon">+</i>
  </i-image-upload>
  <button>上传</button>
</form>

默认上传

使用 before-upload 限制用户上传的图片格式和大小, 只有返回 true, 才会继续上传图片，否则停止

<template>
  <form>
    <i-image-upload 
      name="file" 
      action="http://localhost:1400/avatar" 
      :before-upload="beforeUpload"
      :on-preview="onPreview"
      :on-success="onSuccess"
      :on-error="onError"
    >
      <img v-if="imagePreview" :src="imagePreview" class="demo-avatar">
      <i class="demo-icon" v-else>+</i>
    </i-image-upload>
  </form>
</template>

<script>
export default {
  data () {
    return {
      imagePreview: ''
    }
  },
  methods: {
    beforeUpload (file) {
      const isJPG = file.type === 'image/jpeg'
      const isLt2M = file.size / 1024 / 1024 < 2

      if (!isJPG) {
        console.error('上传头像图片只能是 JPG 格式!')
      }
      if (!isLt2M) {
        console.error('上传头像图片大小不能超过 2MB!')
      }
      return isJPG && isLt2M
    },
    onPreview (file) {
      this.imagePreview = file
    },
    onSuccess (res, dataurl) {
      console.log(res)
    },
    onError (res, dataurl) {
      console.log(res)
      this.imagePreview = ''
    }
  }
}
</script>

<style scoped>
.demo-icon {
  border: 1px dashed lightblue;
  width: 100px;
  height: 100px;
  text-align: center;
  line-height: 100px;
  display: block;
  font-style: normal;
  color: lightblue;
  font-size: 26px;
}
.demo-avatar {
  border: 1px dashed lightblue;
  width: 100px;
  height: 100px;
}
</style>

自定义ajax上传

使用 custom-handle-upload 覆盖默认的上传行为，可以自定义上传的实现

<template>
  <form>
    <i-image-upload 
      name="file" 
      action="http://localhost:1400/avatar" 
      resultType="blob"
      :before-upload="beforeUpload"
      :customHandleUpload="onhandleUpload"
      :on-success="onSuccess"
      :on-error="onError"
    >
      <img v-if="imagePreview" :src="imagePreview" class="demo-avatar">
      <i class="demo-icon" v-else>+</i>
    </i-image-upload>
  </form>
</template>

<script>
export default {
  data () {
    return {
      imagePreview: ''
    }
  },
  methods: {
    beforeUpload (file) {
      const isJPG = file.type === 'image/jpeg'
      const isLt2M = file.size / 1024 / 1024 < 2

      if (!isJPG) {
        console.error('上传头像图片只能是 JPG 格式!')
      }
      if (!isLt2M) {
        console.error('上传头像图片大小不能超过 2MB!')
      }
      return isJPG && isLt2M
    },
    onhandleUpload (formatFile) {
      this.imagePreview = formatFile
      let filedata = new FormData()
      filedata.append('file', data)

      return fetch('http://localhost:1400/avatar', {
        method: 'post',
        mode: 'no-cors',
        body: filedata
      })
    },
    onSuccess (res, dataurl) {
      console.log(res)
      this.imagePreview = res.data.imageUrl
    },
    onError (res, dataurl) {
      console.log(res)
      this.imagePreview = ''
    }
  }
}
</script>

API