【发布时间】：2016-04-12 00:23:17
【问题描述】：
我需要一些关于 JasperReport 的帮助，这是我的模板
<?xml version="1.0"?>
<!DOCTYPE jasperReport
PUBLIC "-//JasperReports//DTD Report Design//EN"
"http://jasperreports.sourceforge.net/dtds/jasperreport.dtd">
<jasperReport name="HelloReportWorld">
<parameter name="reportTitle" class="java.lang.String"/>
<parameter name="author" class="java.lang.String"/>
<parameter name="startDate" class="java.lang.String"/>
<field name="CUSTOMER_ID" class="java.lang.Integer"/>
<field name="NAME" class="java.lang.String"/>
<field name="CITY" class="java.lang.String"/>
<field name="STATE" class="java.lang.String"/>
<title>
<band height="60">
<textField>
<reportElement x="0" y="10" width="500" height="40"/>
<textElement textAlignment="Center">
<font size="24"/>
</textElement>
<textFieldExpression class="java.lang.String">
<![CDATA[$P(reportTitle)]]>
</textFieldExpression>
</textField>
<textField>
<reportElement x="0" y="40" width="500" height="20"/>
<textElement textAlignment = "Center"/>
<textFieldExpression class="java.lang.String">
<![CDATA["Ejecutado por: " + $P(author) +
" on " + $P(startDate)]]>
</textFieldExpression>
</textField>
</band>
</title>
<columnHeader>
<band height="30">
<rectangle>
<reportElement x="0" y="0" width="500" height="25"/>
<graphicElement/>
</rectangle>
<staticText>
<reportElement x="5" y="5" width="50" height="15"/>
<textElement/>
<text><![CDATA[ID]]></text>
</staticText>
<staticText>
<reportElement x="55" y="5" width="250" height="15"/>
<text><![CDATA[Nombre]]></text>
</staticText>
<staticText>
<reportElement x="205" y="5" width="255" height="15"/>
<text><![CDATA[Ciudad, Estado]]></text>
</staticText>
</band>
</columnHeader>
<detail>
<band height="20">
<textField>
<reportElement x="5" y="0" width="50" height="15"/>
<textElement/>
<textFieldExpression class="java.lang.Integer"><![CDATA[$P(CUSTOMER_ID)]]></textFieldExpression>
</textField>
<textField>
<reportElement x="55" y="0" width="150" height="15"/>
<textElement/>
<textFieldExpression class="java.lang.String"><![CDATA[$P(NAME)]]></textFieldExpression>
</textField>
<textField>
<reportElement x="5" y="0" width="50" height="15"/>
<textElement/>
<textFieldExpression class="java.lang.String"><![CDATA[$P(CITY) + ", " + $P(STATE)]]></textFieldExpression>
</textField>
</band>
</detail>
这里是主类：
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import net.sf.jasperreports.engine.JREmptyDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.view.JasperViewer;
/**
*
* @author alejandro
*/
public class JAsperDemo1 {
/**
* @param args the command line arguments
*/
public static void main(String[] args) throws ClassNotFoundException, SQLException {
String reportSource = "./reports/templates/HolaMundo.jrxml";
String reportDest = "./reports/results/HolaMundo.html";
Map<String, Object> params = new HashMap<String, Object>();
params.put("reportTitle", "Informe Hola Mundo");
params.put("author", "Jose Javier Ber");
params.put("startDate",(new java.util.Date()).toString());
try
{
JasperReport jasperReport = JasperCompileManager.compileReport(reportSource);
Class.forName("org.apache.derby.jdbc.ClientDriver");
java.sql.Connection conn = DriverManager.getConnection(
"jdbc:derby://localhost:1527/sample", "app", "app");
JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, params, conn);
JasperExportManager.exportReportToHtmlFile(jasperPrint, reportDest);
JasperViewer.viewReport(jasperPrint);
}catch(JRException ex){
System.out.println(ex.getMessage());
}
}
}
这些是我得到的错误：
编译报表表达式类文件时遇到错误： C:\Users\alejandro\Documents\NetBeansProjects\JasperDemo\HelloReportWorld_1460420530440_343732.java:183： 错误：找不到符号 价值 = $F(PRODUCT_ID); //$JR_EXPR_ID=8$ ^ 符号：变量 PRODUCT_ID 位置：类 HelloReportWorld_1460420530440_343732 C:\Users\alejandro\Documents\NetBeansProjects\JasperDemo\HelloReportWorld_1460420530440_343732.java:188： 错误：找不到符号 价值 = $F（描述）； //$JR_EXPR_ID=9$ ^ 符号：变量描述位置：类 HelloReportWorld_1460420530440_343732 C:\Users\alejandro\Documents\NetBeansProjects\JasperDemo\HelloReportWorld_1460420530440_343732.java:193： 错误：找不到符号 价值 = $F(PURCHASE_COST); //$JR_EXPR_ID=10$ ^ 符号：变量 PURCHASE_COST 位置：类 HelloReportWorld_1460420530440_343732 C:\Users\alejandro\Documents\NetBeansProjects\JasperDemo\HelloReportWorld_1460420530440_343732.java:256： 错误：找不到符号 价值 = $F(PRODUCT_ID); //$JR_EXPR_ID=8$ ^ 符号：变量 PRODUCT_ID 位置：类 HelloReportWorld_1460420530440_343732 C:\Users\alejandro\Documents\NetBeansProjects\JasperDemo\HelloReportWorld_1460420530440_343732.java:261： 错误：找不到符号 价值 = $F（描述）； //$JR_EXPR_ID=9$ ^ 符号：变量描述位置：类 HelloReportWorld_1460420530440_343732 C:\Users\alejandro\Documents\NetBeansProjects\JasperDemo\HelloReportWorld_1460420530440_343732.java:266： 错误：找不到符号 价值 = $F(PURCHASE_COST); //$JR_EXPR_ID=10$ ^ 符号：变量 PURCHASE_COST 位置：类 HelloReportWorld_1460420530440_343732 C:\Users\alejandro\Documents\NetBeansProjects\JasperDemo\HelloReportWorld_1460420530440_343732.java:329： 错误：找不到符号 价值 = $F(PRODUCT_ID); //$JR_EXPR_ID=8$ ^ 符号：变量 PRODUCT_ID 位置：类 HelloReportWorld_1460420530440_343732 C:\Users\alejandro\Documents\NetBeansProjects\JasperDemo\HelloReportWorld_1460420530440_343732.java:334： 错误：找不到符号 价值 = $F（描述）； //$JR_EXPR_ID=9$ ^ 符号：变量描述位置：类 HelloReportWorld_1460420530440_343732 C:\Users\alejandro\Documents\NetBeansProjects\JasperDemo\HelloReportWorld_1460420530440_343732.java:339： 错误：找不到符号 价值 = $F(PURCHASE_COST); //$JR_EXPR_ID=10$ ^ 符号：变量 PURCHASE_COST 位置：类 HelloReportWorld_1460420530440_343732 9 个错误
【问题讨论】：
-
你至少应该解释一下你认为错误来自哪里。