Node-JasperSt

> Based on PHPJasper Lib

_A NodeJS Report Generator_

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Node-JasperSt is the best solution to compile and process JasperReports (.jrxml & .jasper files) just using nodejs, in short: to generate reports using nodejs.

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Did you ever had to create a good looking Invoice with a lot of fields for your great web app?

I had to, and the solutions out there were not perfect. Generating HTML + CSS to make a PDF? That doesn't make any sense! :)

Then I found JasperReports the best open source solution for reporting.

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Well, everything. JasperReports is a powerful tool for reporting and BI.

From their website:

> The JasperReports Library is the world's most popular open source reporting engine. It is entirely written in Java and it is able to use data coming from any kind of data source and produce pixel-perfect documents that can be viewed, printed or exported in a variety of document formats including HTML, PDF, Excel, OpenOffice and Word.

It is recommended using Jaspersoft Studio to build your reports, connect it to your datasource (ex: MySQL, POSTGRES), loop thru the results and output it to PDF, XLS, DOC, RTF, ODF, etc.

Some examples of what you can do:

* Invoices
* Reports
* Listings

Requirements

* NodeJS 14 or above
* Java JDK 1.8

Optional

* Any jdbc drivers to generate reports from a database (MySQL, PostgreSQL, MSSQL...), must be copied to a folder jasperstarter/jdbc
* We ship the PostgreSQL (42.2.9) in the jasperstarter/jdbc directory.
* We ship the MySQL connector (v5.1.48) in the jasperstarter/jdbc directory.
* Microsoft JDBC Drivers SQL Server
.
* Jaspersoft Studio version 6.6.0 (to draw your reports).

Installation

Just run:
``bash
npm install node-jasperst
`

You should have installed dotenv for config Java Runtime Enviroment 8 (JRE) path
`bash
npm install dotenv
`

Examples

- in src/demo.ts you can see some examples:

`js
import { NodeJasperSt } from 'node-jasperst'
import * as dotenv from 'dotenv'
import path from 'path';
dotenv.config()

enum reports {
Hello = "examples/hello_world.jrxml",
Contactos = "examples/json.jrxml",
}

enum data {
Contactos = 'contacts.json',
}

const output = 'output';

async function compileJasper(njst: NodeJasperSt) {
await njst.compile(reports.Contactos, output);
result = await njst.execute()
console.log(result)
}

async function processJasper(njst: NodeJasperSt) {
let result = ''
njst.process(reports.Contactos, output, {
db_connection: {
'driver': 'json',
'data_file': path.join('examples', data.Contactos),
}
});

result = await njst.execute()
console.log(result)
}

async function init() {
const njst = new NodeJasperSt()
await compileJasper(njst);
await processJasper(njst);
}
init();
``

- for more examples, please see PHPJasper README.md Examples.