How to handle image uploading and compression in Vue technology development

How to handle image uploading and compression in Vue technology development

In modern web applications, image uploading is a very common requirement. However, due to network transmission and storage reasons, directly uploading original high-resolution images may result in slow upload speeds and a large waste of storage space. Therefore, uploading and compressing images is very important.

In Vue technology development, we can use some ready-made solutions to handle image upload and compression. The following will introduce how to use the vue-upload-component library and vue-image-compressor library to implement this function.

First, we need to install these two libraries. Open the terminal, enter your project directory, and execute the following command:

npm install vue-upload-component vue-image-compressor

Next, introduce these two libraries into your Vue component:

// 引入vue-upload-component库
import VueUploadComponent from 'vue-upload-component'

// 引入vue-image-compressor库
import ImageCompressor from 'vue-image-compressor'

Then, in the template of the Vue component Use vue-upload-component to create an image upload component:

<template>
  <div>
    <vue-upload-component
      :action="uploadUrl"
      :extensions="allowedExtensions"
      @complete="onUploadComplete"
    ></vue-upload-component>
  </div>
</template>

In the above code, we specify the URL address of the image upload through the action attribute, extensionsAttributes are used to limit the file types allowed to be uploaded. The @complete event will be triggered after the upload is completed.

Next, define some variables and methods in the Vue component:

export default {
  data() {
    return {
      uploadUrl: '/upload', // 图片上传的URL地址
      allowedExtensions: ['jpg', 'jpeg', 'png'], // 允许上传的文件类型
    }
  },
  methods: {
    onUploadComplete(response) {
      // 图片上传完成后的回调函数
      console.log('uploaded image:', response)
    },
  },
}

The above onUploadComplete method will be called after the image upload is completed, we can in this method Process the logic after the upload is successful.

Next, let’s deal with the image compression part. Use vue-image-compressor in the Vue component to create an image compression component:

<template>
  <div>
    <vue-image-compressor
      :file="file"
      :quality="0.7"
      @compressed="onImageCompressed"
    ></vue-image-compressor>
  </div>
</template>

In the above code, we pass the image to be compressed to vue-image- through the file attribute compressor component, the quality attribute specifies the quality of compression, and the @compressed event will be triggered after the image compression is completed.

Again, define some variables and methods in the Vue component:

export default {
  data() {
    return {
      file: null, // 需要压缩的图片文件
    }
  },
  methods: {
    onImageCompressed(compressedImage) {
      // 图片压缩完成后的回调函数
      console.log('compressed image:', compressedImage)
    },
  },
}

In the above onImageCompressed method, we can obtain the compressed image data for further processing .

Finally, you need to place these two components in your Vue page and configure and style them according to actual needs.

By using the vue-upload-component and vue-image-compressor libraries, we can easily implement the image upload and compression functions in Vue technology development. The above is a simple example, you can further expand and optimize the functions according to your own needs. Hope this article can be helpful to you!

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