Node——Egg 创建本地文件访问接口

1.Router添加路由

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

2. controller文件创建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文件创建fileService.js

const Service = require('egg').Service;
class FileService extends Service{
    
	async file(){
    
    	const {
     ctx } = this;
    	let fileName = ctx.params.fileName //获取文件名
    	let suffix = fileName.split(".")[fileName.split(".").length - 1] //获取文件后缀
    	ctx.set('Content-Type', `image/${
      suffix}`)
    	let filePath = `E:\\development\\myProject\\pc-dev-tool\\file\\` //文件目录
    	return fs.readFileSync(`${
      filePath}${
      fileName}`) //读取文件并返回
  	}
}
module.exports = FileService

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