Question

我正在尝试使用express js学习postgresql，目前正在尝试将测试“名称”值发送到我的后端数据库，但是每次发送时都将其存储并作为null返回。这是我当前的server.js表达用尽了：

const express = require("express");
const app = express();
const cors = require("cors");
const pool = require("./db");
const PORT = 5000;


//
//Middleware
//
app.use(cors());
app.use(express.json());
app.use(express.urlencoded({ extended: false }))



//
//Routes
//

//Add to cart
app.post("/addCart", async(req,res) =>{
    try {
        const { description } = req.body;
        const newName = await pool.query(
            "INSERT INTO products(name) VALUES($1) RETURNING *", 
            [description]
            );
        res.json(newName.rows[0]);

    } catch(err){
        console.error(err);
    }
});

app.listen(PORT, () =>{
    console.log("Express Server has started on port", {PORT});
});

这是我的邮递员尸体：

{
    "name": "testtest"
}

这是返回的响应：

{
    "id": 9,
    "name": null
}

任何帮助将不胜感激！

Answer 1

看起来您从请求主体中拉出了错误的属性。尝试将描述更改为代码中的名称：

try {
-    const { description } = req.body;
+    const { name } = req.body;
    const newName = await pool.query(
        "INSERT INTO products(name) VALUES($1) RETURNING *", 
-        [description]
+        [name]
        );
    res.json(newName.rows[0]);

PostgreSQL邮递员发送空值

1 个答案: