补丁方式
通过svg-patch-src修补jasperreports cvs源码，编译后与iReport源码整合。笔者发现了少数中文和xml校验等问题，通过修改源码可以解决。所以建议iText，jasperreports，jfreechart，iReport都使用cvs源码。
中文问题
修改com.lowagie.text.pdf.DefaultFontMapper类的awtToPdf方法：
BaseFont bf = null;
try {
bf =
BaseFont.createFont(
System.getPRoperty(“font.chinese.SIMYOU”),"D:/wiki/iReport-0.3.0/fonts/SIMYOU.TTF",
BaseFont.IDENTITY_H,
BaseFont.EMBEDDED);
} catch (DocumentException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
在linux平台上部署的时候需要修改jfreechart相应的字体。
iReport Chart
iReport目前对chart支持很有限，不过通过image标签和scriptlet可以很好的嵌入jfreechart图形, 嵌入其它chart比如jcharts方法一样。
Scriptlet代码
public class ChartScriptlet extends JRDefaultScriptlet
{
/**
*
*/
public void afterReportInit() throws JRScriptletException
{
Connection con=null;
DefaultPieDataset pieDataset = new DefaultPieDataset();
try {
Class.forName("Oracle.jdbc.driver.OracleDriver");
System.out.println("oracle.jdbc.driver.OracleDriver");
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
con =
DriverManager.getConnection(
"jdbc:oracle:thin:@127.0.0.1.38:1521:ora8i",
"user",
"passWord");
String query =
"select province.name as name,sum(bill.total) as total from province,bill,node where bill.node_id =node.id and node.province_id=province.id and bill.CREATE_TIME to_date('2004-1-1','yyyy-MM-dd') group by province.name";
Statement stmt = con.createStatement();
// Submit a query, creating a ResultSet object
ResultSet rs = stmt.executeQuery(query);
while (rs.next()) {
System.out.println(rs.getString("name"));
pieDataset.setValue(
rs.getString("name"),
rs.getDouble("total"));
}
rs.close();
stmt.close();
con.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
JFreeChart chart =
ChartFactory.createPieChart(
"2004-1-1至今各省帐单数据统计图",
pieDataset,
true,
true,
false);
JCommonDrawableWrapper chartWrapper = new JCommonDrawableWrapper(chart);
this.setVariableValue("ChartImage", chartWrapper);
BufferedImage image = chart.createBufferedImage(246, 303);
this.setVariableValue("ChartImage2", image);
}
}
