我正在嘗試運行此NodeJs代碼以在Mysql DB中添加數據：app.post("/taxi",(req,res)=>{

let model=req.body.model;

let numberplate=req.body.numberplate;

let brand= req.body.brand;

let yearOfPur=req.body.yearOfPur;

let params=[model,numberplate,brand,yearOfPur];

//adding data

//console.log(params);

let sql = "INSERT INTO taxi (model,numberplate,brand,yearOfPur) VALUES ?";

connection.query(sql,params,(err)=>{

if(err){console.log(err);}

//ending connection

res.send("data added");

});

// connection.end();

})

但是它顯示了一個錯誤。這是完整的錯誤{ Error: Cannot enqueue Query after invoking quit.

at Protocol._validateEnqueue (/home/ishdutt/WebDev/DBMSProject/node_modules/mysql/lib/protocol/Protocol.js:215:16)

at Protocol._enqueue (/home/ishdutt/WebDev/DBMSProject/node_modules/mysql/lib/protocol/Protocol.js:138:13)

at Connection.query (/home/ishdutt/WebDev/DBMSProject/node_modules/mysql/lib/Connection.js:201:25)

at app.post (/home/ishdutt/WebDev/DBMSProject/app.js:65:16)

at Layer.handle [as handle_request] (/home/ishdutt/WebDev/DBMSProject/node_modules/express/lib/router/layer.js:95:5)

at next (/home/ishdutt/WebDev/DBMSProject/node_modules/express/lib/router/route.js:137:13)

at Route.dispatch (/home/ishdutt/WebDev/DBMSProject/node_modules/express/lib/router/route.js:112:3)

at Layer.handle [as handle_request] (/home/ishdutt/WebDev/DBMSProject/node_modules/express/lib/router/layer.js:95:5)

at /home/ishdutt/WebDev/DBMSProject/node_modules/express/lib/router/index.js:281:22

at Function.process_params (/home/ishdutt/WebDev/DBMSProject/node_modules/express/lib/router/index.js:335:12) code: 'PROTOCOL_ENQUEUE_AFTER_QUIT', fatal: false }

我在對同一錯誤追隨許多connection.end()之后嘗試對Post進行注釋，但此錯誤仍然存??在。我該怎么辦？

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