/ * * DynamicJasper:通过指定动态创建报告的库 *运行时的列,组,样式等。它还节省了大量的开发 *在很多情况下的时间! (http://sourceforge.net/projects/dynamicjasper) * *版权所有(C)2008 FDV解决方案(http://www.fdvsolutions.com) * *这个库是免费软件;你可以重新分配它和/或 *根据GNU Lesser General Public的条款进行修改 * *自由软件基金会发布的许可;或 * *许可证的2.1版,或(根据您的选择)任何更高版本。 * *这个库的发布是希望它有用, *但没有任何担保;甚至没有暗示的保证 * *适销性或特定用途的适用性。见GNU * *更少的通用公共许可证了解更多详情。 * *您应该已收到GNU Lesser General Public的副本 *与此库一起许可;如果没有,请写信给自由软件 * * Foundation,Inc.,51 Franklin Street,Fifth Floor,Boston,MA 02110-1301 USA * * * /
package ar.com.fdvs.dj.test;
import java.sql.*;
import java.awt.Color;
import java.util.Date;
import java.util.Locale;
import net.sf.jasperreports.view.*;
import ar.com.fdvs.dj.domain.AutoText;
import ar.com.fdvs.dj.domain.DynamicReport;
import ar.com.fdvs.dj.domain.Style;
import ar.com.fdvs.dj.domain.builders.FastReportBuilder;
import ar.com.fdvs.dj.domain.builders.StyleBuilder;
import ar.com.fdvs.dj.domain.constants.Font;
import ar.com.fdvs.dj.core.DJConstants;
// import ar.com.fdvs.dj.test.*;
public class Main extends BaseDjReportTest {
public DynamicReport buildReport()throws Exception { //连接C =新连接(); // C.Con(); CConnection C = new CConnection(); C.Connection(); 声明stmt; ResultSet rs = null; String SQL =“SELECT * FROM student”; stmt = C.Con()。createStatement(); rs = stmt.executeQuery(SQL); String res =“”;
FastReportBuilder drb = new FastReportBuilder();
drb.setQuery(SQL, DJConstants.QUERY_LANGUAGE_SQL);
while (rs.next()){
res= rs.getString("Name");
**drb.addColumn("Name","Name", String.class.getName(),30);**
// drb.addc
}
//.addColumn("Branch", "branch", String.class.getName(),30)
// .addColumn("Item", "item", String.class.getName(),50)
// .addColumn("Item Code", "id", Long.class.getName(),30,true)
// .addColumn("Quantity", "quantity", Long.class.getName(),60,true)
// .addColumn("Amount", "amount", Float.class.getName(),70,true)
drb.addGroups(2);
DynamicReport sa =drb.build();
drb.setSubtitle("This report was generated at " + new Date())
.setTemplateFile("templates/TemplateReportTest.jrxml")
.setUseFullPageWidth(true);
Style atStyle = new StyleBuilder(true).setFont(Font.COMIC_SANS_SMALL).setTextColor(Color.red).build();
Style atStyle2 = new StyleBuilder(true).setFont(new Font(9, Font._FONT_TIMES_NEW_ROMAN, false, true, false)).setTextColor(Color.BLUE).build();
/***
* Adding many autotexts in the same position (header/footer and aligment) makes them to be one on top of the other
*/
//First add in the FOOTER
drb.addAutoText(AutoText.AUTOTEXT_PAGE_X, AutoText.POSITION_HEADER, AutoText.ALIGNMENT_LEFT,200,40, atStyle);
drb.addAutoText("Autotext below Page counter", AutoText.POSITION_FOOTER, AutoText.ALIGNMENT_LEFT);
//Note the styled text: <b>msimone</b>, valid tags are: <b>, <i> and <u>
drb.addAutoText("Created by <b>msimone</b>", AutoText.POSITION_FOOTER, AutoText.ALIGNMENT_RIGHT,200);
drb.addAutoText(AutoText.AUTOTEXT_PAGE_X_SLASH_Y, AutoText.POSITION_FOOTER, AutoText.ALIGNMENT_RIGHT,30,30,atStyle2);
drb.addAutoText(AutoText.AUTOTEXT_CREATED_ON, AutoText.POSITION_FOOTER, AutoText.ALIGNMENT_LEFT,AutoText.PATTERN_DATE_DATE_TIME);
//Now in HEADER
drb.addAutoText(AutoText.AUTOTEXT_PAGE_X_OF_Y, AutoText.POSITION_HEADER, AutoText.ALIGNMENT_LEFT,100,40);
drb.addAutoText("Autotext at top-left", AutoText.POSITION_HEADER, AutoText.ALIGNMENT_LEFT,200);
drb.addAutoText("Autotext at top-left (2)", AutoText.POSITION_HEADER, AutoText.ALIGNMENT_LEFT,200);
drb.addAutoText("Autotext at top-center", AutoText.POSITION_HEADER, AutoText.ALIGNMENT_CENTER,200,atStyle);
// DynamicReport dr = drb.build();
//i18N, you can set a Locale, different tha n the default in the VM
drb.setReportLocale(new Locale("es","AR"));
drb.setReportLocale(new Locale("pt","BR"));
drb.setReportLocale(new Locale("fr","FR"));
return sa;
}
public static void main(String[] args) throws Exception {
**Main test = new Main();
test.testReport();**
JasperViewer.viewReport(test.jp);
JasperDesignViewer.viewReportDesign(test.jr);
//JasperDesignViewer.viewReportDesign(DynamicJasperHelper.generateJasperReport(test.dr, test.getLayoutManager(),new HashMap()));
}
}
编写此代码我得到以下异常,我真的无法找出原因
线程“main”中的异常net.sf.jasperreports.engine.JRException:从bean检索字段值时出错:net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getBeanProperty中的varchar(JRAbstractBeanDataSource.java:123) at net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getFieldValue(JRAbstractBeanDataSource.java:96) at net.sf.jasperreports.engine.data.JRBeanCollectionDataSource.getFieldValue(JRBeanCollectionDataSource.java:100) at net.sf.jasperreports.engine.fill.JRFillDataset.setOldValues(JRFillDataset.java:818) at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:782) at net.sf.jasperreports.engine.fill.JRBaseFiller.next(JRBaseFiller.java:1448) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:108) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:923) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:845) at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:85) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:624) 在ar.com.fdvs.dj.test.BaseDjReportTest.testReport(BaseDjReportTest.java:93) 在ar.com.fdvs.dj.test.Main.main(Main.java:121) 引起:java.lang.NoSuchMethodException:类'class ar.com.fdvs.dj.test.domain.Product'上的未知属性'varchar' 在org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1322) 在org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:770) 在org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:846) 在org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:426) at net.sf.jasperreports.engine.data.JRAbstractBeanDataSource.getBeanProperty(JRAbstractBeanDataSource.java:111) ......还有12个 Java结果:1
答案 0 :(得分:3)
您可能已经意识到这一点,但似乎在某处,代码试图访问Product对象上名为“varchar”的属性:
引起:java.lang.NoSuchMethodException:类'ar.com.fdvs.dj.test.domain.Product'类中的未知属性'varchar'.......
我不知道你的例子中发生了什么。可能有一个地方,名字是预期的,而你是传递类型。或者在您的配置中的某个地方,您已经切换了名称和类型,因此它正在寻找名为“varchar”的字段。这有意义吗?
通常,我发现错误日志的“由...引起”部分是最有用的。