Jasperreport基本介绍(Jasperreport与Ireport介绍)
java代码设计模板,数据源为对象数组。
用java实现模板设计,我们就直接粘贴代码,先要将jasperreport相关的jar包导入进来:
我的代码结构如图所示:
WebappDataSource.java
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
*/
package datasource;
import net.sf.jasperreports.engine.JRDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRField;
/**
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: WebappDataSource.java 3031 2009-08-27 11:14:57Z teodord $
*/
public class WebappDataSource implements JRDataSource
{
/**
*
*/
private Object[][] data =
{
{"Berne", new Integer(22), "Bill", "250 - 20th Ave."},
{"Berne", new Integer(9), "James Schneider", "277 Seventh Av."},
{"Boston", new Integer(32), "Michael Ott", "339 College Av."},
{"Boston", new Integer(23), "Julia Heiniger", "358 College Av."},
{"Chicago", new Integer(39), "Mary Karsen", "202 College Av."},
{"Chicago", new Integer(35), "George Karsen", "412 College Av."},
{"Chicago", new Integer(11), "Julia White", "412 Upland Pl."},
{"Dallas", new Integer(47), "Janet Fuller", "445 Upland Pl."},
{"Dallas", new Integer(43), "Susanne Smith", "2 Upland Pl."},
{"Dallas", new Integer(40), "Susanne Miller", "440 - 20th Ave."},
{"Dallas", new Integer(36), "John Steel", "276 Upland Pl."},
{"Dallas", new Integer(37), "Michael Clancy", "19 Seventh Av."},
{"Dallas", new Integer(19), "Susanne Heiniger", "86 - 20th Ave."},
{"Dallas", new Integer(10), "Anne Fuller", "135 Upland Pl."},
{"Dallas", new Integer(4), "Sylvia Ringer", "365 College Av."},
{"Dallas", new Integer(0), "Laura Steel", "429 Seventh Av."},
{"Lyon", new Integer(38), "Andrew Heiniger", "347 College Av."},
{"Lyon", new Integer(28), "Susanne White", "74 - 20th Ave."},
{"Lyon", new Integer(17), "Laura Ott", "443 Seventh Av."},
{"Lyon", new Integer(2), "Anne Miller", "20 Upland Pl."},
{"New York", new Integer(46), "Andrew May", "172 Seventh Av."},
{"New York", new Integer(44), "Sylvia Ott", "361 College Av."},
{"New York", new Integer(41), "Bill King", "546 College Av."},
{"Oslo", new Integer(45), "Janet May", "396 Seventh Av."},
{"Oslo", new Integer(42), "Robert Ott", "503 Seventh Av."},
{"Paris", new Integer(25), "Sylvia Steel", "269 College Av."},
{"Paris", new Integer(18), "Sylvia Fuller", "158 - 20th Ave."},
{"Paris", new Integer(5), "Laura Miller", "294 Seventh Av."},
{"San Francisco", new Integer(48), "Robert White", "549 Seventh Av."},
{"San Francisco", new Integer(7), "James Peterson", "231 Upland Pl."}
};
private int index = -1;
/**
*
*/
public WebappDataSource()
{
}
/**
*
*/
public boolean next() throws JRException
{
index++;
return (index < data.length);
}
/**
*
*/
public Object getFieldValue(JRField field) throws JRException
{
Object value = null;
String fieldName = field.getName();
if ("city".equals(fieldName))
{
value = data[index][0];
}
else if ("ID".equals(fieldName))
{
value = data[index][1];
}
else if ("name".equals(fieldName))
{
value = data[index][2];
}
else if ("address".equals(fieldName))
{
value = data[index][3];
}
return value;
}
}
next() 实现了 JRDataSource 中的方法.判断是否还有下一个.
getFieldValue(JRField field) 实现了JRDataSource 中的方法. field 是对应报表中的要填充的字段的名称.
模板设计代码,java实现模板时,要贯彻一个思想就设计思路要与XML模板中组成结构一致,这也是我的心得体会之一。
StaticText.java
package test;
import java.io.File;
import java.util.HashMap;
import net.sf.jasperreports.engine.JRAlignment;
import net.sf.jasperreports.engine.JRElement;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.design.JRDesignBand;
import net.sf.jasperreports.engine.design.JRDesignExpression;
import net.sf.jasperreports.engine.design.JRDesignField;
import net.sf.jasperreports.engine.design.JRDesignParameter;
import net.sf.jasperreports.engine.design.JRDesignReportFont;
import net.sf.jasperreports.engine.design.JRDesignStyle;
import net.sf.jasperreports.engine.design.JRDesignTextField;
import net.sf.jasperreports.engine.design.JasperDesign;
import net.sf.jasperreports.engine.util.JRLoader;
import net.sf.jasperreports.view.JasperDesignViewer;
import net.sf.jasperreports.view.JasperViewer;
import datasource.WebappDataSource;
public class StaticText {
JRDesignReportFont font1 = new JRDesignReportFont();
// TODO Auto-generated method stub
/**
* Method name: main <BR>
* Description: main <BR>
* Remark: <BR>
* @param args void<BR>
*/
public static void main(String[] args) {
JRDesignReportFont font1 = new JRDesignReportFont();
font1.setFontSize(12);
try {
// JRDesignStaticText text1=ReportUtil.getStaticText(
// 110,0,400,22,null,JRTextElement.TEXT_ALIGN_CENTER,font1,"city");
// JRDesignStaticText text2=ReportUtil.getStaticText(
// 110,0,400,22,null,JRTextElement.TEXT_ALIGN_CENTER,font1,"name");
// JRDesignStaticText text3=ReportUtil.getStaticText(
// 110,0,400,22,null,JRTextElement.TEXT_ALIGN_CENTER,font1,"address");
JasperDesign jasperDesign = new JasperDesign();
jasperDesign.setName("NoXmlDesignReport");
jasperDesign.setPageWidth(595);
jasperDesign.setPageHeight(842);
jasperDesign.setColumnWidth(515);
jasperDesign.setColumnSpacing(0);
jasperDesign.setLeftMargin(40);
jasperDesign.setRightMargin(40);
jasperDesign.setTopMargin(50);
jasperDesign.setBottomMargin(50);
JRDesignStyle normalStyle = new JRDesignStyle();
normalStyle.setName("Arial_Normal");
normalStyle.setDefault(true);
normalStyle.setFontName("Arial");
normalStyle.setFontSize(12);
normalStyle.setPdfFontName("Helvetica");
normalStyle.setPdfEncoding("Cp1252");
normalStyle.setPdfEmbedded(false);
jasperDesign.addStyle(normalStyle);
// JRDesignStyle boldStyle = new JRDesignStyle();
// boldStyle.setName("Arial_Bold");
// boldStyle.setFontName("Arial");
// boldStyle.setFontSize(12);
// boldStyle.setBold(true);
// boldStyle.setPdfFontName("Helvetica-Bold");
// boldStyle.setPdfEncoding("Cp1252");
// boldStyle.setPdfEmbedded(false);
// jasperDesign.addStyle(boldStyle);
//
// JRDesignStyle italicStyle = new JRDesignStyle();
// italicStyle.setName("Arial_Italic");
// italicStyle.setFontName("Arial");
// italicStyle.setFontSize(12);
// italicStyle.setItalic(true);
// italicStyle.setPdfFontName("Helvetica-Oblique");
// italicStyle.setPdfEncoding("Cp1252");
// italicStyle.setPdfEmbedded(false);
// jasperDesign.addStyle(italicStyle);
JRDesignParameter parameter = new JRDesignParameter();
parameter.setName("ReportTitle");
parameter.setValueClass(java.lang.String.class);
jasperDesign.addParameter(parameter);
// Fields
JRDesignField field = new JRDesignField();
field.setName("city");
field.setValueClass(java.lang.String.class);
jasperDesign.addField(field);
field = new JRDesignField();
field.setName("ID");
field.setValueClass(java.lang.Integer.class);
jasperDesign.addField(field);
field = new JRDesignField();
field.setName("name");
field.setValueClass(java.lang.String.class);
jasperDesign.addField(field);
field = new JRDesignField();
field.setName("address");
field.setValueClass(java.lang.String.class);
jasperDesign.addField(field);
JRDesignBand band = null;
JRDesignTextField textField = null;
JRDesignExpression expression = null;
band = new JRDesignBand();
band.setHeight(20);
textField = new JRDesignTextField();
textField.setX(5);
textField.setY(4);
textField.setWidth(100);
textField.setHeight(15);
textField.setHorizontalAlignment(JRAlignment.HORIZONTAL_ALIGN_RIGHT);
textField.setStyle(normalStyle);
expression = new JRDesignExpression();
expression.setValueClass(java.lang.String.class);
expression.setText("$F{city}");
textField.setExpression(expression);
band.addElement(textField);
textField = new JRDesignTextField();
textField.setStretchWithOverflow(true);
textField.setX(120);
textField.setY(4);
textField.setWidth(100);
textField.setHeight(15);
textField.setPositionType(JRElement.POSITION_TYPE_FLOAT);
textField.setStyle(normalStyle);
expression = new JRDesignExpression();
expression.setValueClass(java.lang.Integer.class);
expression.setText("$F{ID}");
textField.setExpression(expression);
band.addElement(textField);
textField = new JRDesignTextField();
textField.setStretchWithOverflow(true);
textField.setX(220);
textField.setY(4);
textField.setWidth(100);
textField.setHeight(15);
textField.setPositionType(JRElement.POSITION_TYPE_FLOAT);
textField.setStyle(normalStyle);
expression = new JRDesignExpression();
expression.setValueClass(java.lang.String.class);
expression.setText("$F{name}");
textField.setExpression(expression);
band.addElement(textField);
textField = new JRDesignTextField();
textField.setStretchWithOverflow(true);
textField.setX(400);
textField.setY(4);
textField.setWidth(100);
textField.setHeight(15);
textField.setPositionType(JRElement.POSITION_TYPE_FLOAT);
textField.setStyle(normalStyle);
expression = new JRDesignExpression();
expression.setValueClass(java.lang.String.class);
expression.setText("$F{address}");
textField.setExpression(expression);
band.addElement(textField);
jasperDesign.setDetail(band);
HashMap<String, String> titleParameters = new HashMap<String, String>();
titleParameters.put("ReportTitle", "helloworld");
File reportFile= new File("E:/billin.jasper");
JasperCompileManager.compileReportToFile(jasperDesign,reportFile.getPath());
JasperReport jasperReport=(JasperReport)JRLoader.loadObject(reportFile.getPath());
JasperPrint jasperPrint=JasperFillManager.fillReport( jasperReport,titleParameters,new WebappDataSource());
System.out.println("--------"+jasperPrint.getName());
JasperViewer viewer = new JasperViewer(jasperPrint);
viewer.setTitle("");
viewer.setVisible(true);
// JasperDesignViewer viewer = new JasperDesignViewer(jasperReport);
// viewer.setVisible(true);
} catch (JRException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
下面就可以运行,查看报表结果:
关于jasperreport的sample
1)运行sample之前需要安装ant服务器
2)进入到某个sample目录中,输入ant,之后再输入ant view
3)有些sample需要运行sample自带的数据,则在hsqldb目录中,输入ant runServer命令启动数据库,再到sample目录中,输入ant,之后再输入ant view。
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