What is the image address for accessing the computer in uniapp?

Uniapp is a cross-platform development framework that can use common front-end technology (VueJS) to develop applications that run on multiple platforms at the same time. In uniapp, to access the image address of the computer, you need to use the File component and uni.request method provided by uni-app.

First, we need to configure the application permissions in manifest.json to allow the application to access the photo album:

  "app-plus": {
    "permissions": {
      "photos": {
        "desc": "用于访问本地相册"
      }
    }
  }

Then, we can use the File component to select the image and get the local path of the file:

<template>
  <file-selector @change="onFileSelected"></file-selector>
</template>

<script>
  import {FileSelector} from 'uni-app-plus'
  export default {
    components: {
      FileSelector
    },
    methods: {
      async onFileSelected({detail: files}) {
        const filePath = files[0].path
        // do something with the file path
      }
    }
  }
</script>

In the onFileSelected method, we can get the selected file path and use it for subsequent operations. But please note that the File component can only be used on the App side. If you need to use it on other platforms such as H5, you can use the uni.request method to request the image address from the backend.

<template>
  <button @click="onGetImage">获取电脑图片</button>
</template>

<script>
  export default {
    methods: {
      async onGetImage() {
        const result = await uni.request({
          url: 'http://localhost:8080/image' // 修改为您的后端地址
        })
        const imageUrl = result.data
        // do something with the image URL
      }
    }
  }
</script>

In the onGetImage method, we use the uni.request method to send a request to the backend to obtain the image address on the computer. It should be noted that because it requires access to the computer's file system, this method can only be used on the App side and WeChat applet. You need to choose the appropriate method to access the image address of your computer based on your needs.

In short, it is very convenient to use uni-app to develop cross-platform applications. You can use the File component and the uni.request method to easily access the computer's image address. However, you need to pay attention to permissions and platform restrictions when using it to avoid unexpected problems.

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