Book Image

JasperReports for Java Developers

Book Image

JasperReports for Java Developers

Overview of this book

JasperReports is the world's most popular embeddable Java open source reporting library, providing Java developers with the power to easily create rich print and web reports. This book shows you exactly how to get started, and develop the skills to get the most from JasperReports. The book steers you through each point of report setup, to creating, designing, formatting, and exporting reports with data from a wide range of datasources, and integrating JasperReports with other Java frameworks. Starting with the basics of adding reporting capabilities to your application, and creating report templates you will first see how to produce your reports through the use of JRXML files, custom ANT targets, and then see preview them in both the browser and the native browser of JasperReports. Getting data into your reports is the next step, and you will see how to get data from a range of datasources, not only databases, but XML files, and Java Objects, among others. You will create better looking reports with formatting and grouping, as well as adding graphical elements to the report. You will export your reports to a range of different formats, including PDF and XML. Creating reports will be made even easier with a walkthrough of the iReport Designer visual designing tool. To round things off, you will see how to integrate your reports with other Java frameworks, using Spring or Hibernate to get data for the report, and Java Server Faces or Struts for presenting the report.
Table of Contents (13 chapters)
12
Index

Adding Multiple Columns to a Report

JasperReports allows us to generate reports with multiple columns. Reports we have seen so far look like they have multiple columns. For example, the report we created in the previous chapter, has four separate columns for Model, Tail Number, Serial Number, and Engine. However, all four of these fields are laid out in a single<band>.

When we add multiple columns to a report, we should think of the data inside a<band> as being in a cell, regardless of how the data is laid out inside that band.

The FlightStats database that we used for the examples in Chapter 4 contains the country, state, and city where an aircraft is registered. Let us create a report displaying the tail number of all the aircraft registered in the state of New York, in the United States. Our report will display the data in three columns. The following JRXML template will generate a report with the desired layout:

<?xml version="1.0" encoding="UTF-8"?...