Connect to and operate Oracle database instances in JavaScript, and use javascriptoracle

Connect to and operate Oracle database instances in JavaScript, and use javascriptoracle

Preface

In the development of B/s and c/s, javascript is basically not used to operate the database. I have confirmed my idea and need to add a large amount of news information to the database. Therefore, I want to obtain information from each rss site and import the information to the database. In fact, I can also choose to use java, c ++, or c # compiling languages. However, using javascript is the most efficient for this job. So why am I happy?

Environment

Operating System: winxp sp2
Use the tool cscript.exe to process files in batches.
Database: oracle 10 Gb as the target database (other databases such as sqlserver, access, and mysql can also be used)
Data access method: ADO (other data access methods, such as odbc and jdbc)

Code:

File Name: rss. js
Copy codeThe Code is as follows:
// Create a database connection object
Var conn = new ActiveXObject ("ADODB. Connection ");
// Create a DataSet object
Var rs = new ActiveXObject ("ADODB. Recordset ");

Try {
// Database connection string, specific configuration, see: http://www.connectionstrings.com/
// If you do not know how to configure the connection string, you can use the text editor to open the UDL file.
Var connectionstring = "Provider = OraOLEDB. Oracle.1; Password = pwd; Persist Security Info = True; User ID = username; Data Source = ORA ";

// Open the connection
Conn. open (connectionstring );

// Query statement
Var SQL = "select * from tb_col ";

// Open the dataset (that is, execute the query statement)
Rs. open (SQL, conn );

// Traverse all records
While (! Rs. eof ){
// WScript is the host object of the Windows Script. For details, see windows Help.
// WScript. Echo output Record Content
WScript. Echo (rs. Fields ("id") + "\ t" + rs. Fields ("name") + "\ n ");

// Next record
Rs. moveNext ();
}

// Close the record set
Rs. close ();
// Close the database connection
Conn. close ();
} Catch (e ){
// Exception report
WScript. Echo (e. message );
} Finally {
//
}

File 2: run. bat

This file is a batch file that runs the rss. js file. Although you can directly run rss. js file, but the file that runs directly is activated using a window. In this case, a window is displayed for each record. So I use the command line method to activate the rss. js file and batch process the command to simplify the command input.
Copy codeThe Code is as follows:
Cscript.exe rss. js
Pause

Run the run. bat file and you can see the result similar to the following:
Copy codeThe Code is as follows:
1 Topic 1

2 Topic 2

3 Topic 3

4 Topic 4