[英]nodejs passing in the end point of the url
I'm trying to create a simple js app to query a cassandra db like this: 我正在尝试创建一个简单的js应用程序来查询cassandra数据库,如下所示:
var express = require('express');
var cassandra = require('cassandra-driver')
var app = express();
var client = new cassandra.Client({contactPoints: ['127.0.0.1'], keyspace: 'custprd'});
app.get('/', function (req, res) {
res.send('Hello Ronak!');
});
app.get('/customer/:ent_cust_id', function (req, res, next) {
var query = 'Select * from entcustinfo where ent_cust_id = ?';
consolelog('Select * from entcustinfo where ent_cust_id = ?');
client.execute(query, [req.params.ent_cust_id], function (err, result) {
if (err) return next (err);
var row = result.rows[0];
//Response
res.json({ent_cust_id: req.params.ent_cust_id, name: row.get('offers')});
});
});
var server = app.listen(3030, function () {
var host = server.address().address;
var port = server.address().port;
console.log('Example app listening at http://%s:%s', host, port);
});
now, when I go an type the call http://10.205.116.141:3030/customer/1013686356
in the web browser, I get this back: 现在,当我在网络浏览器中键入呼叫http://10.205.116.141:3030/customer/1013686356
时,我会得到以下信息:
Error: Expected 4 or 0 byte int (10)
and the console log is showing this: 控制台日志显示如下:
Select * from entcustinfo where ent_cust_id = ?
I thought the ?
我以为?
was the way to pass in the end point of the url? URL终点的传递方式是什么?
EDIT: 编辑:
I think this has to do with execute vs executeAsPrepared...I use executeAsPrepare, I get this error: TypeError: undefined is not a function
我认为这与execute vs executeAsPrepared有关...我使用executeAsPrepare,出现此错误: TypeError: undefined is not a function
so here is how I got it to work: 所以这就是我的工作方式:
app.get('/customer/:ent_cust_id', function (req, res, next) {
var query = 'Select * from entcustinfo where ent_cust_id = ?' [req.params.ent_cust_id];
consolelog('Select * from entcustinfo where ent_cust_id = ?');
client.execute(query, function (err, result) {
if (err) return next (err);
var row = result.rows[0];
//Response
res.json({ent_cust_id: req.params.ent_cust_id, name: row.get('offers')});
});
});
I moved [req.params.ent_cust_id]
up to var query
我将[req.params.ent_cust_id]
移至var query
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