Node -- egg creates a local file access interface

1.Router Add route

router.get('/file/:fileName', controller.fileController.file)

2. controller File creation fileController.js

const Controller = require('egg').Controller;
class FileController extends Controller{
    
	async file() {
    
    	const {
     ctx } = this;
    	let res = await ctx.service.fileService.file()
    	ctx.body = res
  	}
}
module.exports = FileController

3. service File creation fileService.js

const Service = require('egg').Service;
class FileService extends Service{
    
	async file(){
    
    	const {
     ctx } = this;
    	let fileName = ctx.params.fileName // Get the file name 
    	let suffix = fileName.split(".")[fileName.split(".").length - 1] // Get file suffix 
    	ctx.set('Content-Type', `image/${
      suffix}`)
    	let filePath = `E:\\development\\myProject\\pc-dev-tool\\file\\` // File directory 
    	return fs.readFileSync(`${
      filePath}${
      fileName}`) // Read the file and return 
  	}
}
module.exports = FileService

visit ： http://localhost:8080/file/1238127391.png