当数据源是XML时,报告中只生成一行 [英] Only one row is generated in report when data source is XML

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本文介绍了当数据源是XML时,报告中只生成一行的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我正在尝试使用 XML 数据源生成报告。我的输入 xml 文件有4行。但是 JR 引擎生成的报告只包含第1行。

I'm trying to generate report using XML data source. My input xml file has 4 lines. But JR engine generates report contains only 1st row.

我有< detail> <频带> ...< / band> < / detail> 获取数据的部分

我的 jrxml 文件看起来像这样

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE jasperReport PUBLIC "//JasperReports//DTD Report Design//EN" "http://jasperreports.sourceforge.net/dtds/jasperreport.dtd">

<jasperReport name="simpleReport">
    <queryString language="xPath"><![CDATA[/response/results]]></queryString>
    <field name="field" class="java.lang.String">
        <fieldDescription><![CDATA[//field]]></fieldDescription>
    </field>
  <field name="count" class="java.lang.String">
          <fieldDescription><![CDATA[//field[@count]]]></fieldDescription>
    </field>

    <title>
        <band height="50">
            <staticText>
          <reportElement x="0" y="0" width="180" height="15"/>
            <textElement/>
          <text><![CDATA[Report]]></text>
        </staticText>
        </band>
    </title>
  <pageHeader>
        <band/>
    </pageHeader>
  <columnHeader>
        <band height="20">
        <staticText>
          <reportElement x="180" y="0" width="180" height="20"/>
        <textElement>
            <font isUnderline="true"/>
        </textElement>
        <text><![CDATA[Event Name]]></text>
      </staticText>
      <staticText>
        <reportElement x="360" y="0" width="180" height="20"/>
        <textElement>
          <font isUnderline="true"/>
        </textElement>
        <text><![CDATA[Count]]></text>
      </staticText>
    </band>
  </columnHeader>
  <detail>
    <band height="20">
      <textField>
        <reportElement x="180" y="0" width="180" height="15"/>
        <textElement/>
        <textFieldExpression><![CDATA[$F{field}]]></textFieldExpression>
      </textField>
      <textField>
        <reportElement x="360" y="0" width="180" height="15"/>
        <textElement/>
        <textFieldExpression><![CDATA[$F{count}]]></textFieldExpression>
      </textField>
    </band>
  </detail>
  <columnFooter>
    <band/>
  </columnFooter>
  <pageFooter>
    <band height="15">
      <staticText>
        <reportElement x="0" y="0" width="40" height="15"/>
        <textElement/>
        <text><![CDATA[Page:]]></text>
      </staticText>
      <textField>
        <reportElement x="40" y="0" width="100" height="15"/>
        <textElement/>
        <textFieldExpression class="java.lang.Integer"><![CDATA[$V{PAGE_NUMBER}]]></textFieldExpression>
      </textField>
    </band>
  </pageFooter>
  <summary>
    <band/>
  </summary>
</jasperReport>

我的输入xmls是

<response id="1074200577">
    <results id1="0" id2="0">
        <field count="7556">one</field>
        <field count="7524">two</field>
        <field count="7402">three</field>
        <field count="7304">four</field>
    </results>
</response>

我的Java客户端

JasperCompileManager.compileReportToFile(inpuutjrxml, outputjasper);
JRXmlDataSource source = new JRXmlDataSource(new File(sourceFile));
HashMap<String, Object> params = new HashMap<String, Object>();
JasperPrint jasperPrint = JasperFillManager.fillReport(outputjasper, params, source);
JasperExportManager.exportReportToPdfStream(jasperPrint, new FileOutputStream(pefoutput));

如何从输入xml中获取所有值?

How to get all values from input xml?

另外如何获取id值?
第一行xml行< field count =7556>一个< / field>

Also how to get the id value for ? For first xml row <field count="7556">one</field>

<fieldDescription><![CDATA[//field[@count]]]></fieldDescription>
<fieldDescription><![CDATA[//field]]></fieldDescription>

提供与One相同的数据

gives same data as "One"

推荐答案

您可以尝试此查询( XPath ):

You can try this query (XPath):

/response/results/field

此字段声明:

<field name="field" class="java.lang.String">
    <fieldDescription><![CDATA[child::text()]]></fieldDescription>
</field>
<field name="count" class="java.lang.String">
    <fieldDescription><![CDATA[@count]]></fieldDescription>
</field>



使用iReport



完整 jrxml 文件,用于尝试从 iReport

Using iReport

The full jrxml file for trying from iReport:

<?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="xml_missing_rows" language="groovy" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="09291847-62d6-4f2e-bf29-6db3230ce9a4">
    <queryString language="xPath">
        <![CDATA[/response/results/field]]>
    </queryString>
    <field name="field" class="java.lang.String">
        <fieldDescription><![CDATA[child::text()]]></fieldDescription>
    </field>
    <field name="count" class="java.lang.String">
        <fieldDescription><![CDATA[@count]]></fieldDescription>
    </field>
    <detail>
        <band height="20" splitType="Stretch">
            <textField>
                <reportElement uuid="30be33c9-3e8c-4b8f-89b7-c2cdafd91615" x="0" y="0" width="100" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$F{field}]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement uuid="30be33c9-3e8c-4b8f-89b7-c2cdafd91615" x="100" y="0" width="100" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$F{count}]]></textFieldExpression>
            </textField>
        </band>
    </detail>
</jasperReport>

输入数据的结果将是(通过 iReport 中的预览) :

The result for your input data will be (via preview in iReport):

注意
我使用了 iReport 5.2.0

您应该将代码修改为:

JRXmlDataSource source = new JRXmlDataSource(new File(sourceFile), "/response/results/field");
HashMap<String, Object> params = new HashMap<String, Object>();
JasperPrint jasperPrint = JasperFillManager.fillReport(outputjasper, params, source);
JasperExportManager.exportReportToPdfStream(jasperPrint, new FileOutputStream(pefoutput));

在这种情况下,我们使用 JRXmlDataSource(java.io。文件文件,
java.lang.String selectExpression)
构造函数。我们用数据传递查询。

In this case we are using the JRXmlDataSource(java.io.File file, java.lang.String selectExpression) constructor. We are passing the query with data.

jrxml 应该是:

<?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="XMLDSSample" language="groovy" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="09291847-62d6-4f2e-bf29-6db3230ce9a4">
    <field name="field" class="java.lang.String">
        <fieldDescription><![CDATA[child::text()]]></fieldDescription>
    </field>
    <field name="count" class="java.lang.String">
        <fieldDescription><![CDATA[@count]]></fieldDescription>
    </field>
    <detail>
        <band height="20" splitType="Stretch">
            <textField>
                <reportElement uuid="30be33c9-3e8c-4b8f-89b7-c2cdafd91615" x="0" y="0" width="100" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$F{field}]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement uuid="30be33c9-3e8c-4b8f-89b7-c2cdafd91615" x="100" y="0" width="100" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$F{count}]]></textFieldExpression>
            </textField>
        </band>
    </detail>
</jasperReport>

如您所见,我已从模板中删除 queryString - 我们在 Java 代码中传递查询。

As you can see I've removed the queryString from the template - we are passing query in Java code.

这篇关于当数据源是XML时,报告中只生成一行的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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