我有折线图，在x轴上我应该以完整格式显示字符串格式的日期，但是当x轴中没有更多的值时我不能显示，因为我决定以垂直方式而不是水平显示x轴值，请建议我。对于参考图像..
<?xml version="1.0" encoding="UTF-8"?>
<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="sampl1" language="groovy" pageWidth="842" pageHeight="595" orientation="Landscape" columnWidth="802" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="431d18d3-722a-4aaf-8207-da8bb0ea2fdd">
<property name="ireport.zoom" value="1.0"/>
<property name="ireport.x" value="0"/>
<property name="ireport.y" value="51"/>
<parameter name="whereClause" class="java.lang.String"/>
<parameter name="bankLogo" class="java.lang.String"/>
<parameter name="bankName" class="java.lang.String"/>
<parameter name="fromDate" class="java.util.Date">
<parameterDescription><![CDATA[]]></parameterDescription>
</parameter>
<parameter name="toDate" class="java.util.Date"/>
<parameter name="noData" class="java.lang.String"/>
<parameter name="userId" class="java.lang.String"/>
<queryString>
<![CDATA[select avg(jbase_user) as jbaseAvg,AVG(t24_user) as t24Avg,to_char(load_time, 'dd.Mon.yy HH24') as period
from tmc_system_summary group by (to_char(load_time, 'dd.Mon.yy HH24'))]]>
</queryString>
<field name="jbaseavg" class="java.math.BigDecimal"/>
<field name="t24avg" class="java.math.BigDecimal"/>
<field name="period" class="java.lang.String"/>
<background>
<band splitType="Stretch"/>
</background>
<title>
<band height="30" splitType="Stretch"/>
</title>
<pageHeader>
<band height="67" splitType="Stretch">
<staticText>
<reportElement x="300" y="22" width="235" height="15" uuid="164831c1-9eff-4cf2-8706-331d28fdf431"/>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="Arial" size="12" isBold="true" pdfFontName="Helvetica-Bold"/>
</textElement>
<text><![CDATA[ System Summary Report]]></text>
</staticText>
<image>
<reportElement x="12" y="3" width="161" height="30" uuid="513d2931-a2c7-4e54-bb86-188737502cae"/>
<imageExpression><![CDATA[$P{bankLogo}]]></imageExpression>
</image>
<textField pattern="dd/MM/yyyy">
<reportElement x="735" y="2" width="55" height="17" uuid="306ddad6-2b80-4abb-9893-859c59c8ede5"/>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="Arial"/>
</textElement>
<textFieldExpression><![CDATA[new java.util.Date()]]></textFieldExpression>
</textField>
<staticText>
<reportElement x="700" y="2" width="30" height="17" uuid="c6fdbff7-45a5-464e-bcbf-d550b174452f"/>
<textElement textAlignment="Right" verticalAlignment="Middle">
<font fontName="Arial"/>
</textElement>
<text><![CDATA[Date:]]></text>
</staticText>
<staticText>
<reportElement x="20" y="40" width="58" height="14" uuid="5bd47ff1-6b81-428a-b7fd-50e777f70a22"/>
<textElement textAlignment="Center" verticalAlignment="Middle"/>
<text><![CDATA[From Date:]]></text>
</staticText>
<staticText>
<reportElement x="160" y="40" width="58" height="14" uuid="a7605d9e-c0d1-4a31-8230-c73db35766d4"/>
<textElement textAlignment="Center" verticalAlignment="Middle"/>
<text><![CDATA[To Date:]]></text>
</staticText>
<textField pattern="dd/MM/yyyy">
<reportElement x="80" y="40" width="70" height="14" uuid="faa13401-da98-4f06-ab43-5a1722d073f7"/>
<textFieldExpression><![CDATA[$P{fromDate} != null ? $P{fromDate} :" "]]></textFieldExpression>
</textField>
<textField pattern="dd/MM/yyyy">
<reportElement x="215" y="40" width="70" height="13" uuid="01fcdb71-820f-4ef1-9913-6ddcf36be2dc"/>
<textFieldExpression><![CDATA[$P{toDate} != null ? $P{toDate} : " "]]></textFieldExpression>
</textField>
<textField>
<reportElement x="300" y="2" width="235" height="17" uuid="7eec4f6f-5bfd-4bb0-8888-8cad8d9d84ad"/>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="Arial" size="14" isBold="true" pdfFontName="Helvetica-Bold"/>
</textElement>
<textFieldExpression><![CDATA[$P{bankName}]]></textFieldExpression>
</textField>
<staticText>
<reportElement x="700" y="22" width="30" height="15" uuid="08ba273e-733d-4652-9f7a-83a51f7d78ca"/>
<textElement textAlignment="Right"/>
<text><![CDATA[By:]]></text>
</staticText>
<textField>
<reportElement x="735" y="22" width="55" height="15" uuid="261308a5-7cef-42f8-8880-9d2c9cc5d5ae"/>
<textFieldExpression><![CDATA[$P{userId}]]></textFieldExpression>
</textField>
<line>
<reportElement x="0" y="54" width="802" height="1" uuid="e17b6ea4-40fd-40ad-861f-a300f926d0e4"/>
</line>
</band>
</pageHeader>
<columnHeader>
<band splitType="Stretch"/>
![enter image description here][1] </columnHeader>
<columnFooter>
<band height="17" splitType="Stretch"/>
</columnFooter>
<pageFooter>
<band height="20" splitType="Stretch">
<textField>
<reportElement x="546" y="1" width="70" height="19" uuid="eeafb0de-dddb-4c9a-8a1d-942b65bf0a7f"/>
<textElement textAlignment="Center" verticalAlignment="Middle">
<font fontName="Arial" size="10"/>
</textElement>
<textFieldExpression><![CDATA["Page " + $V{PAGE_NUMBER}]]></textFieldExpression>
</textField>
</band>
</pageFooter>
<summary>
<band height="392" splitType="Stretch">
<lineChart>
<chart>
<reportElement x="12" y="18" width="779" height="355" uuid="f696d665..
答案 0 :(得分：0)
通过这个，你可以在垂直（topDown）
中显示x轴值 <categoryAxisFormat labelRotation="90.0">
它会起作用。