将模块导出到读取 JSON 内容的服务器请求

Question

基本上，我有一个需要通过函数传递的数组（使用 JSON）。这成为我可以导出到服务器请求的模块。当请求获得“transaction.html”时，应该调用模块并打印出 JSON 对象。我试图使这项工作没有成功，并且想知道我在这里做错了什么（JS 新手！）

//this is becomes the transactionmanager module
    var arrayValues = [
    {
        date: "April 3, 2021",
        description: "House",
        category: "Mortgage",
        amount: 1500
    },
    {
        date: "March 7, 2022",
        description: "Duke Energy",
        category: "Bills and utilities",
        amount: 200
    },
    {
        date: "January 24, 2022",
        description: "Publix",
        category: "Shopping",
        amount: 120
    },
    {
        date: "May 15, 2022",
        description: "AMC",
        category: "Entertainment",
        amount: 20
    }
    ];

function getTransactions() {
    var values = JSON.parse(arrayValues);
}

exports.getTransactions = getTransactions;

下面是服务器请求：

var http = require("http");
var url = require("url");
var transactions = require("transactionmanager");

var server = http.createServer(function (req, res) {
    if (req.url == "/index.html") {
        res.writeHead(200, {"Content-type": "text/html"});
        res.write("<html><body><p>Welcome!</p></body></html>");
        res.end();
    } else if (req.method == "GET" && req.url == "/transactions.html") {
        res.writeHead(200, {"Content-type": "text/html"});
        res.write("<html><body><p>Transaction History</p></body></html>");
        var content = transactions.getTransactions();
        res.end(content);
    } else {
        res.writeHead(404, {"Content-type": "text/html"});
        res.end("<html><body><p>Sorry, the page you are looking for is not here</p></body></html>");
        return;
    }
});

server.listen(3000);

Answer 1

在 transactionmanager 模块中，您有一个 getTransactions 函数 return values

function getTransactions() {
    var values = JSON.parse(arrayValues);
}

然后你试图取回值

var content = transactions.getTransactions();

你必须 raturn values

function getTransactions() {
    var values = JSON.parse(arrayValues);
    return values;
}

将模块导出到读取 JSON 内容的服务器请求

Exporting a module to a server request that reads JSON content

javascript

json

export

node-modules

server