从 Node 获取 api 数据
[英]Fetch api data from Node
问题描述
I have odbc connection to database on Node JS.
我有 odbc 连接到 Node JS 上的数据库。
var express = require('express');
var odbc = require('odbc');
var app = express();
var connectionString = 'Dsn=xxx;uid=xxx;pwd=xxx';
app.get('/query/:table', function (req, res) {
var table = req.params.table;
//console.log('User is accessing : ' + table);
var connection = odbc.connect(connectionString, (error, connection) => {
connection.query("SELECT * FROM " + table + "", (error, result) => {
if (error) { console.error(error) }
var json = JSON.stringify(result);
res.send(json);
});
});
});
app.get('/', function (req, res) {
res.sendFile(__dirname + '/index.html');
});
app.listen(80, function () {
console.log('Application listening on port 80');
});
on localhost/query/colli my output is :在 localhost/query/colli 上，我的输出是：
[ { "MATRK1": "0000019863", "FLG1K1": "S" }, { "MATRK1": "0000019864", "FLG1K1": "S" }] (and a lot of more rows) [ { "MATRK1": "0000019863", "FLG1K1": "S" }, { "MATRK1": "0000019864", "FLG1K1": "S" }] （还有很多行）
My index.html looks like this :我的 index.html 看起来像这样：
<script src="https://code.jquery.com/jquery-3.4.1.slim.js"
integrity="sha256-BTlTdQO9/fascB1drekrDVkaKd9PkwBymMlHOiG+qLI="
crossorigin="anonymous"></script>
<script>
function getElement(id) {
return document.getElementById(id);
}
fetch('http://localhost/query/colli')
.then(res => res.json())
.then((res) => {
const data = res;
document.write(data)
getElement('name').innerHTML = 'Name: ' + data;
});
</script>
<div>
<p id="name"></p>
</div>
<body>
</body>
But i am receiving :但我收到：
[object Object],[object Object] result [object Object],[object Object]结果
What am i doing wrong please?请问我做错了什么？ I want to fetch data from Node into HTML.我想从 Node 获取数据到 HTML 中。
Thanks very much for your time :)非常感谢你花时间陪伴 ：）
2 个解决方案
解决方案1
0 2020-02-13 10:24:25
As data is a JSON object you can't do getElement('name').innerHTML = 'Name: ' + data;由于data是一个 JSON 对象，你不能执行getElement('name').innerHTML = 'Name: ' + data; . . You will have to get a specific key from your object leading to the value you are looking for.您必须从您的对象中获取一个特定的键，从而获得您正在寻找的值。
解决方案2
-1 2020-02-13 11:01:11
depending on your console.log, call the get method根据您的 console.log，调用 get 方法
getElement('name').innerHTML = 'Name: ' + data[0].MATRK1
since data is array of objects, we need to access each object by its index, and each object has the key MATRK1 in it, so we access it using data[0].MATRK1由于 data 是对象数组，我们需要通过索引访问每个对象，每个对象都有键 MATRK1，所以我们使用 data[0].MATRK1 访问它
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