如題

接口代碼如下

/ get /avatar/file_id
router.get('/avatar', async (req, res, next) => {
    const id = req.query.file_id
    const url = await FileModel.getFilePath(id)
    res.set('content-type', 'image/jpg')
    let stream = fs.createReadStream(url)
    let responseData = []; // 存儲文件流
    if (stream) { // 判斷狀態(tài)
        stream.on('data', chunk => {
            responseData.push(chunk)
        })
        stream.on('end', () => {
            let finalData = Buffer.concat(responseData)
            res.write(finalData)
            res.end();
        });
    }
})

FileModel.getFilePath 代碼如下

// 獲取文件路徑
handleFile.getFilePath = async function  (id) {
    let fileObject = await handleFile.getFileById(id)
    return path.join(__dirname, `../uploads/${fileObject.filename}`)
}

index.js 引入 history 代碼如下

const express = require('express')
const session = require('express-session')
const bodyParser = require('body-parser')
const routes = require('./routes')
const history = require('connect-history-api-fallback')
const path = require('path')
const favicon = require('serve-favicon')

const app = new express()

app.use(history())
app.use(bodyParser.urlencoded({extended: true}))
app.use(express.static(path.join(__dirname, '../dist')))
app.use(favicon(path.join(__dirname, './favicon.ico')))



const sessionStore = new session.MemoryStore({ reapInterval: 3600 * 1000 })
app.use(session({
    secret: 'Stefanie Sun',
    store: sessionStore,
    resave: true, // 強制更新 session
    saveUninitialized: true,  // 
    cookie: { maxAge: 3600 * 1000 }, // 過期時間
    rolling: true
}))


routes(app)

但是在界面中使用獲取圖片接口時報了 304 且獲取不到文件

我將 history 刪掉后就一切正常
求問這個怎么解決