试图匹配mongodb图像数据库中的google vision标签

如何解决试图匹配mongodb图像数据库中的google vision标签

我对所有代码事物都是陌生的。现在，我正在开发一个使用图像搜索相似图像的应用程序（非常类似于使用图像的Google图像搜索）。图片正在通过Google视觉API进行标签运行，但是我不确定如何使用数据库来匹配标签。这是我的server.js代码。任何帮助将不胜感激。基本上，我希望能够上传照片并使具有相似标签的照片对象以降序显示。有人告诉我在newImage.save（）行的位置添加一些内容，但是我不知道要去哪里。谢谢！！

const path = require("path");
const mongoose = require("mongoose");
require("dotenv").config();
const config = require("./config");
const routes = require("./routes");
var bodyParser = require('body-parser');
var multer = require ("multer");
const Images = require("./models/images");
const fs = require ('fs')

const app = express();

//google vision
async function quickstart(uploadedFile) {
    const uploadFilename = uploadedFile.filename;
    // Imports the Google Cloud client library
    const vision = require('@google-cloud/vision');
  
    // Creates a client
    const client = new vision.ImageAnnotatorClient({
        keyFilename: "./apiAuthorization.json"
    });
    
  
    // Performs label detection on the image file
    
    const [result] = await client.labelDetection("./client/public/uploads/" + uploadFilename);
    const labels = result.labelAnnotations;
    const labelArray = [];
    console.log('Labels:');
    labels.forEach(label => labelArray.push(label.description));
    //goes to google returns array
    return labelArray;
  }

 
//GOOGLE VISIONS CODE

// middleware to parse data
app.use(express.urlencoded({ extended: true }))
app.use(express.json())

app.use(bodyParser.urlencoded({extended: true}))
app.use(bodyParser.json())

const storage = multer.diskStorage({
   
    destination: function (req,file,cb){
       
   cb(null,__dirname + "/client/public/uploads/")
    },filename: function(req,cb){
        cb(null,file.fieldname + "-" + Date.Now() + path.extname(file.originalname));
    }
    })   
    const upload = multer ({storage: storage})

    
    app.get("/search",(req,res)=>{
        res.sendFile(__dirname + "/client/src/pages/Search/index.js")
    })
    
    
    app.post('/uploadFile',upload.single('myImage'),async (req,res,next) => {
        const file = req.file;
        if(!file){
            const error = new Error ("please upload");
            error.httpStatusCode = 400;
            return next(error);
        }
        // res.send (file);
        var uploadedFile = file;
        //await because quickstart takes time waits for return
        const labelsFinal = await quickstart(uploadedFile);

        //model
        const newImage = new Images({
            imageName: uploadedFile.filename,labels: labelsFinal
        })
        newImage.save().then(image => res.json(image))
        
    //something to match the labels should go here  
        .catch(err => console.log(err))
    })
   

// serve up static assets
if (process.env.NODE_ENV === "production") {
    app.use(express.static(path.join(__dirname,"./client/build")))
};

// connect to Mongo DB 
mongoose.connect(config.MONGO_URI,{ useNewUrlParser: true,useUnifiedTopology: true,useCreateIndex: true,useFindAndModify: true })
    .then(() => console.log(`Mongo DB Succesfully Connected`))
    .catch(err => console.log(err));

// use routes
app.use(routes);

// check for "production" enviroment and set port
const PORT = process.env.PORT || 3001;

// start server
app.listen(PORT,() => {
    console.log(`App listening on port: ${PORT}`);
})```