javascript - 如何 POST 一个包含对象数组的数组？

Question

上下文

我正在学习 javascript，同时使用 Node.JS 和 Express 构建 REST API。目前，我一直在尝试读取其中包含对象数组的对象数组。下面是我正在阅读的一个小例子。

[
    {
        "description":"hhhh",
        "goal":"yyyy",
        "goalDate":"12/5/2019",
        "mSubGoalArray":
            [
                {
                    "description":"yyyy",
                    "goal":"ggggg",
                    "goalDate":"12/4/2019",
                    "mSubGoalArray":[]
                }
            ]
    },
    {
        "description":"yy",
        "goal":"gg",
        "goalDate":"12/11/2019",
        "mSubGoalArray":
            [
            ]
    }
]

我尝试过什么

我尝试将其设置为 true，然后读取完整字符串。当我去显示已在 VIA postman 中读取的数据时，它显示它已被读取并识别，但它无法在控制台中显示，它显示为 未定义。

我还尝试模仿对象中包含的所有字段，并一次只读取一个字段。然而，当我与 API 交互时，它会编译，我最终会收到一个数组，提示在初始化之前无法访问“目标”。

目标.js

const express = require('express');
const router = express.Router();

//getting from the database
router.get('/', (req, res, next) => {
    
});

//posting to the database
router.post('/', (req, res, next) => {
    
    const Array = req.body.data;
    console.log(Array);
    
    /*const goal = [
        goal.description = req.body.description,
        goal.goal = req.body.goal,
        goal.goalDate = req.body.description,
        goal.mSubGoalArray = [
            mSubGoalArray.description = req.body.description,
            mSubGoalArray.goal = req.body.goal,
            mSubGoalArray.goalDate = req.body.description,
            mSubGoalArray.mSubGoalArray['null'],
        ]
    ];*/
    
    res.status(200).json({
        the: 'Updated goal'
    });
});

module.exports = router;

app.js

const express = require('express');
const app = express();
const morgan = require('morgan');
const bodyParser = require('body-parser');

app.use(morgan('dev'));
app.use(bodyParser.urlencoded({extended: true}));
app.use(bodyParser.json());

const goalsRoutes = require('./api/routes/goals');
const loginRoutes = require('./api/routes/login');

app.use('/goals', goalsRoutes);
app.use('/login', loginRoutes);

module.exports = app;

问题#

我知道 bodyparser 应该允许内部对象。如何显示 JSON 对象中的读取内容，以便确认我已成功传输该对象？我怎样才能摆脱错误目标初始化错误以其他方式进行。

Answer 1

router.post('/', (req, res, next) => {

    const tab= req.body;
    console.log(Array);
tab.forEach(element=>{

//HERE WE ARE LOOPING ON THE FIRST ARRAY NOW YOU ACCESS TO THE DATA FOR EXAMPLE element.description element.goal and you can also loop inside this loop on the element.mSubGoalArray

})


    res.status(200).json({
        the: 'Updated goal'
    });
});