jasperreports大型excel文件
我有一些报告，我使用 JasperReports 库导出它们。除excel文件（xls）外，一切都很好。例如，当我尝试将包含751行的确切报告导出为excel文件时，没有问题，excel文件将被正确下载，但是当它超过800行时，它将显示一些不相关的字符。上面提到的行大小仅适用于此报告，而对于其他报告，限制是针对不同的数字。在将库从版本2.3升级到6.1.0之前，此问题不存在，现在我尝试了6.2.2。
这是我创建excel文件的方式：
JasperPrint jasperPrint;
try {
jasperPrint = getReportPrint(request, baseForm, "excel");
} catch (ReportNoDataException e) {
return handleNoData(mapping, request, e);
}
try {
JRXlsExporter jrXlsExporter = new JRXlsExporter();
try {
jrXlsExporter.setExporterInput(new SimpleExporterInput(jasperPrint));
jrXlsExporter.setExporterOutput(new SimpleOutputStreamExporterOutput(response.getOutputStream()));
SimpleXlsReportConfiguration configuration = new SimpleXlsReportConfiguration();
configuration.setIgnoreCellBorder(true);
configuration.setWrapText(true);
configuration.setWhitePageBackground(false);
configuration.setRemoveEmptySpaceBetweenColumns(true);
configuration.setRemoveEmptySpaceBetweenRows(true);
configuration.setAutoFitPageHeight(true);
configuration.setDetectCellType(true);
configuration.setSheetDirection(RunDirectionEnum.RTL);
jrXlsExporter.setConfiguration(configuration);
jrXlsExporter.exportReport();
} catch (IOException e) {
log.error("IOException occured" + e);
e.printStackTrace();
} catch (JRException e) {
log.error("JRException occured while exporting for xls format", e);
e.printStackTrace();
}
} catch (Exception e) {
throw e;
}
String filename="report";
response.setHeader("Content-disposition","attachment; filename=\""+filename+".xls\"");
putSearchForm(request, baseForm);
return null;
这是报告代码：
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="mtdTankhahEdaratMojoodiExcelReport" pageWidth="595" pageHeight="60" columnWidth="595" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" scriptletClass="report.webapp.tlmReportScriptlet" uuid="4354b1d9-63b2-4236-b190-ac5b2fb0f464">
<property name="com.jaspersoft.studio.unit." value="pixel"/>
<queryString>
<![CDATA[]]>
</queryString>
<field name="no" class="java.lang.String">
<fieldDescription><![CDATA[no]]></fieldDescription>
</field>
<field name="baseDate" class="java.lang.String">
<fieldDescription><![CDATA[baseDate]]></fieldDescription>
</field>
<field name="pardakht" class="java.lang.Double">
<fieldDescription><![CDATA[pardakht]]></fieldDescription>
</field>
<field name="daryaft" class="java.lang.Double">
<fieldDescription><![CDATA[daryaft]]></fieldDescription>
</field>
<field name="zinaf" class="java.lang.String">
<fieldDescription><![CDATA[zinaf]]></fieldDescription>
</field>
<field name="sanadType" class="java.lang.String">
<fieldDescription><![CDATA[sanadType]]></fieldDescription>
</field>
<variable name="mande" class="java.lang.Double">
<variableExpression><![CDATA[($F{pardakht}==null || $F{daryaft}==null) ? new Double(0) :
(new Double(($F{daryaft}.doubleValue()-$F{pardakht}.doubleValue())+
$V{mande}.doubleValue()))]]></variableExpression>
<initialValueExpression><![CDATA[new Double("0")]]></initialValueExpression>
</variable>
<title>
<band height="30" splitType="Stretch">
<staticText>
<reportElement key="staticText-4" x="0" y="0" width="30" height="30" uuid="36cd81f4-073b-4023-b5b8-716d43a4d377">
<property name="com.jaspersoft.studio.unit.y" value="pixel"/>
<property name="com.jaspersoft.studio.unit.x" value="pixel"/>
</reportElement>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12" isBold="true"/>
</textElement>
<text><![CDATA[ردیف]]></text>
</staticText>
<staticText>
<reportElement key="staticText-8" x="275" y="0" width="80" height="30" uuid="0827df09-4353-424e-94fa-dd8cc7d5c6ac">
<property name="com.jaspersoft.studio.unit.width" value="pixel"/>
</reportElement>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12" isBold="true"/>
</textElement>
<text><![CDATA[نوع سند]]></text>
</staticText>
<staticText>
<reportElement key="staticText-9" x="190" y="0" width="85" height="30" uuid="13490ca9-0ba0-4315-b5a0-745ce020f9e1">
<property name="com.jaspersoft.studio.unit.width" value="pixel"/>
</reportElement>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12" isBold="true"/>
</textElement>
<text><![CDATA[تاریخ سند]]></text>
</staticText>
<staticText>
<reportElement key="staticText-12" x="110" y="0" width="80" height="30" uuid="544625a2-83d3-405d-a117-c0fa6820813a">
<property name="com.jaspersoft.studio.unit.width" value="pixel"/>
</reportElement>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12" isBold="true"/>
</textElement>
<text><![CDATA[شماره سند]]></text>
</staticText>
<staticText>
<reportElement key="staticText-14" x="355" y="0" width="80" height="30" uuid="fc76869a-b6b1-4223-8ab3-26a870a23e08">
<property name="com.jaspersoft.studio.unit.width" value="pixel"/>
</reportElement>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12" isBold="true"/>
</textElement>
<text><![CDATA[دریافت]]></text>
</staticText>
<staticText>
<reportElement key="staticText-14" x="515" y="0" width="80" height="30" uuid="f53ebc1b-eaaa-487b-bd23-ee62a1534caa"/>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12" isBold="true"/>
</textElement>
<text><![CDATA[مانده]]></text>
</staticText>
<staticText>
<reportElement key="staticText-14" x="435" y="0" width="80" height="30" uuid="aa3bda32-9b4c-4e53-927a-f6750256fb51"/>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12" isBold="true"/>
</textElement>
<text><![CDATA[پرداخت]]></text>
</staticText>
<staticText>
<reportElement key="staticText-12" x="30" y="0" width="80" height="30" uuid="b8c6b055-1b5e-4923-954b-a4eed5bab543">
<property name="com.jaspersoft.studio.unit.width" value="pixel"/>
</reportElement>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12" isBold="true"/>
</textElement>
<text><![CDATA[ذینفع]]></text>
</staticText>
</band>
</title>
<detail>
<band height="30" splitType="Stretch">
<property name="com.jaspersoft.studio.unit.height" value="pixel"/>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="textField-1" stretchType="RelativeToTallestObject" x="0" y="0" width="30" height="30" isPrintWhenDetailOverflows="true" uuid="263cfc8f-7812-4797-843c-42fe00045f98">
<property name="com.jaspersoft.studio.unit.width" value="pixel"/>
</reportElement>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12"/>
</textElement>
<textFieldExpression><![CDATA[$V{REPORT_COUNT}]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="textField-5" stretchType="RelativeToTallestObject" x="355" y="0" width="80" height="30" isPrintWhenDetailOverflows="true" uuid="baaa6584-8b9d-4523-a698-a68d065b8892"/>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12"/>
</textElement>
<textFieldExpression><![CDATA[($F{daryaft} == null)? new Double("0"): $F{daryaft}]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="textField-6" stretchType="RelativeToTallestObject" x="190" y="0" width="85" height="30" isPrintWhenDetailOverflows="true" uuid="073a34ff-2e81-4265-a580-beb8fb293ae0"/>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12"/>
</textElement>
<textFieldExpression><![CDATA[($F{baseDate} == null)? "---" : $F{baseDate}]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="textField-9" stretchType="RelativeToTallestObject" x="110" y="0" width="80" height="30" isPrintWhenDetailOverflows="true" uuid="e1c072ca-5d06-453c-a739-c797507a92b0"/>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12"/>
</textElement>
<textFieldExpression><![CDATA[($F{no} == null)? "---" : $F{no}]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="textField-11" stretchType="RelativeToTallestObject" x="435" y="0" width="80" height="30" isPrintWhenDetailOverflows="true" uuid="a5778bf8-71da-4c84-82b8-219f27f04065"/>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12"/>
</textElement>
<textFieldExpression><![CDATA[($F{pardakht} == null)? new Double("0"): $F{pardakht}]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="textField-11" stretchType="RelativeToTallestObject" x="515" y="0" width="80" height="30" isPrintWhenDetailOverflows="true" uuid="a762bdfa-4d3f-4975-b70d-d25875d15af8"/>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12"/>
</textElement>
<textFieldExpression><![CDATA[($V{mande} == null)? new Double("0"): $V{mande}]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="textField-5" stretchType="RelativeToTallestObject" x="275" y="0" width="80" height="30" isPrintWhenDetailOverflows="true" uuid="d8c12462-e172-47eb-a301-905e356465b2"/>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12"/>
</textElement>
<textFieldExpression><![CDATA[($F{sanadType} == null)? "---": $F{sanadType}]]></textFieldExpression>
</textField>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement key="textField-9" stretchType="RelativeToTallestObject" x="30" y="0" width="80" height="30" isPrintWhenDetailOverflows="true" uuid="7eae6f3a-173e-479d-90d7-38b6c5a5b99f"/>
<box>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="1.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="bnazanin" size="12"/>
</textElement>
<textFieldExpression><![CDATA[($F{zinaf} == null)? "---" : $F{zinaf}]]></textFieldExpression>
</textField>
</band>
</detail>
</jasperReport>
以下是报告的截图：
有什么想法可以解决这个问题吗？
1 个答案:
答案 0 :(得分：3)
您正在查看的输出是Excel输出。这是Excel文件在文本编辑器中打开时的样子（我随机获取了一个XLS文件并在Notepad ++中打开）：
这意味着，您的回复不是将内容作为Excel文件提供，而是直接下载，直接在浏览器中显示。
尝试在响应中添加其他参数（from here并设置为适合Java）以更明确：
response.setHeader("Content-Type: application/vnd.ms-excel; charset=utf-8");
response.setHeader("Expires: 0");
response.setHeader("Cache-Control: must-revalidate, post-check=0, pre-check=0");
response.setHeader("Cache-Control: private");
修改
如果更大的文件发生这种情况，请查看描述同一问题的this answer。一般来说，您应该尽早发送响应标头，然后生成报告文件。
简而言之：您应该首先将所有内容写入标题（我怀疑您在response更高的位置上有更多内容），然后尝试生成该文件。因此，浏览器获得结果，看到应用程序文件即将到来并将提供下载。否则，据我所知，response标头是在生成文件后设置的 - 浏览器等待Content-Type可能太长了。
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