通过nodeJS连接oracle数据库

Question

我正在尝试使用 NodeJS 建立 Oracle 连接，但在尝试连接时收到以下错误。

Error:  Error: DPI-1047: Cannot locate a 64-bit Oracle Client library: "The specified module could not be found". See https://oracle.github.io/odpi/doc/installation.html#windows for help
Node-oracledb installation instructions: https://oracle.github.io/node-oracledb/INSTALL.html
You must have 64-bit Oracle client libraries in your PATH environment variable.
If you do not have Oracle Database on this computer, then install the Instant Client Basic or Basic Light package from
http://www.oracle.com/technetwork/topics/winx64soft-089540.html
A Microsoft Visual Studio Redistributable suitable for your Oracle client library version must be available.

    at OracleDb.getConnection (C:\NodeCon\node_modules\oracledb\lib\oracledb.js:270:10)
    at C:\NodeCon\node_modules\oracledb\lib\util.js:180:16
    at new Promise (<anonymous>)
    at OracleDb.getConnection (C:\NodeCon\node_modules\oracledb\lib\util.js:168:14)
    at C:\NodeCon\server.js:41:32
    at Object.<anonymous> (C:\NodeCon\server.js:58:3)
    at Module._compile (internal/modules/cjs/loader.js:956:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:973:10)
    at Module.load (internal/modules/cjs/loader.js:812:32)
    at Function.Module._load (internal/modules/cjs/loader.js:724:14) {
  errorNum: 0,
  offset: 0

我已经下载并安装了 64 位 Oracle 客户端库，但仍然出现以下错误。

使用 Visual Studio 代码 v.1.36 作为我的编辑器。

我使用的 NodeJS 代码如下：

let connection;
var oracledb = require('oracledb');

(async function(){

    try{

        connection = await oracledb.getConnection({

            user: 'Username',
            password: 'Password',
            connectString: 'hostname:portname/servicename'
        });



        console.log("Successfully connected");
    } catch(err){

        console.log("NOT connected");
    }finally{

        if(connection){
            try{
                await connection.close();
            }catch(err){
                console.log("Errror");
            }
        }
    }
})()

任何帮助将不胜感激。谢谢

Answer 1

这已通过以下代码解决：

oracledb.getConnection({

            user: 'username',
            password: 'Password',
            connectString: 'hostname:portname/servicename'

            },

function(err, connection) {
            if (err) throw err;


         connection.execute(

        //Your database query here.


//below code if you want to fetch data from database and show it on terminal
 function(err,results){
                 var metaData = {};
                 var rows = {};
                 console.log("error")
                 if (err){
                     throw err
                      }
                      metaData.name1 = results.metaData[0].name;      
                      metaData.name2 = results.metaData[1].name;


                 rows.row1 = results.rows[0][0];
                 rows.row2 = results.rows[0][1];
                 rows.row3 = results.rows[0][2];
                 console.log(metaData.name1+" : "+rows.row1)
                 console.log(metaData.name2+" : "+rows.row2)

        console.log("Successfully connected");

         );

      }

如果您通过 VPN 连接，请确保先连接到服务器，然后再连接到上面的运行。

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