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jasperReports�l�验�?3)

MingIsMe — Sun, 17 Jul 2005 09:13:00 GMT

/**
*

Title: JRDataSourceAdapter

*
Description: Converting JRDataSource to Mapped ArrayList

*
Copyright: Copyright (c) 2004

*
Company: *****

* @author zephyr
* @version 1.0
*/
package xyz;

import net.sf.jasperreports.engine.*;
import net.sf.jasperreports.engine.design.*;

import java.util.*;

public class JRDataSourceAdapter
{
    public static Map JRDataSource2Map(JRDataSource dataSource, String[] fieldNames,
        Class[] fieldClasses) throws JRException
    {
        HashMap result;

        if (fieldNames.length != fieldClasses.length)
        {
            throw new JRException("Number of Field Name & Class unmatch");
        }

JRDesignField[] fields = new JRDesignField[fieldNames.length];

result = new HashMap(4);

        for (int i = 0; i < fieldNames.length; i++)
        {
            fields[i] = new JRDesignField();
            fields[i].setName(fieldNames[i]);
            fields[i].setValueClass(fieldClasses[i]);
            result.put(fieldNames[i], new ArrayList());
        }

        do
        {
            for (int i = 0; i < fields.length; i++)
            {
                Object value = dataSource.getFieldValue(fields[i]);
                ((ArrayList) result.get(fields[i].getName())).add(value);
            }
        }
        while (dataSource.next());

return result;
}
}

/**
*

Title: GraphProvider

*
Description: Generate JFreeChart Image

*
Copyright: Copyright (c) 2004

*
Company: ****

* @author zephyr
* @version 1.0
*/
package xyz;

import net.sf.jasperreports.engine.*;
import net.sf.jasperreports.engine.design.*;
import net.sf.jasperreports.engine.export.*;

import org.jfree.chart.*;
import org.jfree.chart.axis.*;
import org.jfree.chart.plot.*;

import org.jfree.data.*;

import java.awt.*;
import java.awt.image.*;

import java.io.*;

import java.util.*;

public class GraphProvider
{
    public static Image getImage(Map dataSource, String fieldNameX, String fieldNameY,
        String chartName, String titleX, String titleY, boolean isBarChart, int imageWidth,
        int imageHeight) throws JRException
    {
        JRDesignField fieldX = new JRDesignField();
        fieldX.setName(fieldNameX);
        fieldX.setValueClass(java.lang.String.class);

        JRDesignField fieldY = new JRDesignField();
        fieldY.setName(fieldNameY);
        fieldY.setValueClass(java.lang.Double.class);

ArrayList periods = (ArrayList) dataSource.get(fieldNameX);
ArrayList values = (ArrayList) dataSource.get(fieldNameY);

DefaultCategoryDataset categoryDs = new DefaultCategoryDataset();

        for (int i = 0; i < values.size(); i++)
        {
            Object obj = values.get(i);
            double dataValue = 0;

            if (obj != null)
            {
                dataValue = ((Double) obj).doubleValue();
            }

categoryDs.addValue(dataValue, null, (String) periods.get(i));
}

JFreeChart c = null;

        if (isBarChart)
        {
            c = ChartFactory.createBarChart(chartName, titleX, titleY, categoryDs,
                    PlotOrientation.VERTICAL, false, false, false);
        }
        else
        {
            c = ChartFactory.createLineChart(chartName, titleX, titleY, categoryDs,
                    PlotOrientation.VERTICAL, false, false, false);
        }

c.getTitle().setFont(new Font("Arial", Font.BOLD, 16));

NumberAxis axis = (NumberAxis) c.getCategoryPlot().getRangeAxis();
axis.setAutoRange(true);

TickUnitSource tickUnits = NumberAxis.createIntegerTickUnits();
axis.setStandardTickUnits(tickUnits);

return (c.createBufferedImage(imageWidth, imageHeight));

}
}

MingIsMe 2005-07-17 17:13 发表评论

JasperReport学习(f��n)文档

MingIsMe — Sun, 17 Jul 2005 08:55:00 GMT

1:对于A4的报�?可以�q�样指定��面:pageWidth="595" pageHeight="842" orientation="Portrait" ,orientation指的是打印的方向,可有2中选择
Portrait(�U�向),LandScape(横向)
2:报表xml中是区分大小写的
3:表达�?jasper中共�?lt;variableExpression>, , ,
, , �q�几�U�表辑ּ�,在表辑ּ�中可以引�?中类型的变量,分别�?P{},$V{},$F{}.
P=Parameter,V=Variable,F=Field,P通常是通过�E�序传给报表中的,V是�ؓ了简化操作定义的一�U�表辑ּ�,F通常是要填充的字�D?

$P{ReportTitle}

ReportTitle是在应用�E�序中通过一个Map指定�?
Map parameters = new HashMap();
parameters.put("ReportTitle", "Address Report");
JasperPrint jasperPrint =
JasperFillManager.fillReport(
jasperReport,
parameters,
new WebappDataSource()
);
参数也可�?在xml中指�?

new java.util.Date()

$F{}例子:

$F{FirstName} + " " + $F{LastName} + " was hired on " +
(new SimpleDateFormat("MM/dd/yyyy")).format($F{HireDate}) + "."

4:数据�?
如要为报表指定一个数据源,则需要实现dori.jasper.engine.JRDataSource接口,也就是实��C��?个方�?
public boolean next() throws JRException;
public Object getFieldValue(JRField jrField) throws JRException;
如果报表指定的是Connection,则可以在xml中指定查询语�?

5:计算:

$F{Quantity}

MingIsMe 2005-07-17 16:55 发表评论

IReport+Mysql制作分组报表

MingIsMe — Sun, 17 Jul 2005 08:54:00 GMT

Step1 到iReport官方�|�站下蝲iReport软�g包，有两�U�类型下载，其中一�U�带有源码包�Q�徏议下载带有源码的包，我下载的�?.41版�?/P>

Step2 解压软�g包到某个目录D:\Ming\Programs\iReport. 在这个目录下创徏一个startup.bat文�g内容如下�Q�需要做响应改变�Q�：
@echo off
set JAVA_HOME=d:\j2sdk
set ANT_HOME=D:\Ming\Programs\ant
set IREPORT_HOME=D:\Ming\Programs\iReport
rem %ANT_HOME%\bin\ant javadocs
%ANT_HOME%\bin\ant iReport

Step3 以后双击�q�个文�g��可以启动iReport�?/P>

Step4 到MySQL官方�|�站下蝲MySQL Connector/J 3.1,�q�是一个Mysql的JDBC驱动包，��Z��支持�q�接mysql5.0。解压这个包�Q�把mysql-connector-java-3.1.8-bin.jar攑ֈ�iReport的lib目录下。把原来的的mysql-connector-java-3.0.8-stable-bin.jar删除�?/P>

Step5 启动mysql服务�Q�重启iReport�?/P>

Step6 在iReport的Datesource菜单Connections子菜单里建立JDBC数据�q�接�?BR> Name: report   (注：随便一个名�U?
   JDBC Driver: com.mysql.jdbc.Driver
   JDBC URL: jdbc:mysql://localhost/report
   Server Address: localhost
   Database: report (注：mysql的一个数据库)
   User name: root (或者其他用户名)
   Password: 密码

Step7 在report数据库里创徏表groups�Q�共5个字�D�：id,Year,Month,Day,Hour�Q�Data都是Integer�c�d��。Id是自增长�c�d��Q�作��Z��键。�ƈ插入一些数据。我们分别按Year�Q�Month�Q�day分组�Q�显�C�Data倹{�?/P>

Step8 新徏一个包表�ƈ且保存，Datasource |Report Query为报表添加SQL语句�Q?BR> select * from groups order by Year,Month,Day,Hour

Step9 为报表添�?个组�Q�Year�Q�Month�Q�Day。添加方法：点击工具栏的Groups按钮�Q�New�Q�蟩出的对话框中�Q�设定（Year group举例�Q�： Group Name�Q�Year

Group Expression�Q?F{Year}

此时报表的页面出现Year Header�?/P>

Step10 在报表中填入标题�Q�单击T工具栏按钮，在报表中的Header栏中拉一个框出来�Q�右键，选择property修改内容和字体。与此类��|��在columns栏中��d��5个框�Q�分别是"�q?�Q?�?�Q?�?�Q?�?�Q?数据"。�ƈ用直�U�把他们分开。参考附图�?/P>

Step11 在报表中填入分组数据的Field。添加方法，以Year��Z��Q�点��d��h��的F按钮�Q�在"�q?列，Yeargroup行对应的地方�Q�拉��Z��个Field框，叛_��选择属性，在TextField标签里修改两��内容：TextField Expression Class�Q�java.lang.Integer。TextField Expression�Q?F{Year}�?/P>

Step12 在报表中填入记录数据。在Detail行，"�?�Q?数据"列分别拉两个Field框，修改TextField标签里面的内容与Step11�c�M��?/P>

Step13 建立报表和数据源的连接。选择菜单�Q�Build|Set Active Connection�?/P>

Step14 点击Run Report With connection�?/P>

1.设计�?/TD>
2. 预览�?/TD>

MingIsMe 2005-07-17 16:54 发表评论