node-jasper

JasperReports within Node.js

Install

Install via npm:

npm install --save node-jasper

To use it inside your project just do:

var jasper = require('node-jasper')(options);

Where options is an object with the following signature:

options: {
path: , //Path to jasperreports-x.x.x directory (from jasperreports-x.x.x-project.tar.gz)
reports: {
// Report Definition
"name": { jasper: , //Path to jasper file,
jrxml: , //Path to jrxml file,
conn: , //Connection name, definition object or false (if false defaultConn won't apply or if ´in_memory_json´ then you can pass an JSON object in the ´dataset´ property for in-memory data sourcing instead of database access
}
},
drivers: {
// Driver Definition
"name": {
path: , //Path to jdbc driver jar
class: , //Class name of the driver (what you would tipically place in "Class.forName()" in java)
type: //Type of database (mysql, postgres)
}
},
conns: {
// Connection Definition
"name": {
host: , //Database hostname or IP
port: , //Database Port
dbname: , //Database Name
user: , //User Name
pass: , //User Password
jdbc: , //jdbc connection String. If this is defined, every thing else but user and pass becomes optional. driver: //name or definition of the driver for this conn }
},
defaultConn: ,//Default Connection name java: ,//Array of java options, for example ["-Djava.awt.headless=true"]
javaInstnace: //Instance of node-java, if this is null, a new instance will be created and passed in 'java' property
}

API

• add(name, report)

  Add a new report definition identified by name.

  In report definition one of jasper or jrxml must be present.

• pdf(report)

  Alias for export(report, 'pdf')

• export(report, format)

  Returns the compiled report in the specified format.

  report can be of any of the following types:

  • A string that represents report's name. No data is supplied.. defaultConn will be applied to get data with reports internal query.

  • An object that represents report's definition. No data is supplied.. if conn is not present, then defaultConn will be applied to get data with reports internal query.

  • An object that represents reports, data and properties to override for this specific method call.

    {
    report: , //name, definition or an array with any combination of both
    data: {}, //Data to be applied to the report. If there is an array of reports, data will be applied to each.
    override: {} //properties of report to override for this specific method call.
    dataset: {} //an object to be JSON serialized and passed to the Report as fields instead of parameters (see the example for more info)
    }
    

  • An array with any combination of the three posibilities described before.

  • A function returning any combination of the four posibilities described before.

Example

var express = require('express'),
app = express(),
jasper = require('node-jasper')({
path: 'lib/jasperreports-5.6.0',
reports: {
hw: {
jasper: 'reports/helloWorld.jasper'
}
},
drivers: {
pg: {
path: 'lib/postgresql-9.2-1004.jdbc41.jar',
class: 'org.posgresql.Driver',
type: 'postgresql'
}
},
conns: {
dbserver1: {
host: 'dbserver1.example.com',
port: 5432,
dbname: 'example',
user: 'johnny',
pass: 'test',
driver: 'pg'
}
}
defaultConn: 'dbserver1'
});
app.get('/pdf', function(req, res, next) {
//beware of the datatype of your parameter.
var report = {report: 'hw', data: {id: parseInt(req.query.id, 10)}};
var pdf = jasper.pdf(report);
res.set({
'Content-type': 'application/pdf',
'Content-Length': pdf.length
});
res.send(pdf);
});
app.listen(3000);

That's It!.