Question

我在Jaspersoft Studio中使用JavaBean生成基本报告（主/子报告）时遇到麻烦。

我创建了 TestMainReport.jrxml 和 TestSubreport.jrxml 。

TestMainReport.jrxml 包含两个静态文本字段，在标题栏中标记为"A Title"，在摘要栏中标记为"A Summary"。

TestSubreport.jrxml 包含两个静态文本字段，标题为"Subreport Title"，摘要区域为"Subreport Summary"。

我已经为它们分配了未使用的JavaBeans数据适配器（尽管JavaBean字段正在主报表中映射。由于没有使用它们，我碰巧没有在子报表中映射它们）。

子报告元素已添加到“摘要”区域中的主报告中。

当我尝试生成每个报告时，这两个报告都是单独生成的。但是，子报表静态文本不会出现在主报表中。

我期望子报表的静态文本会出现在主报表中。

我在做什么错了？

TestMainReport.jrxml

<?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="TestMainReport" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="0d969cfb-66d2-442f-b7a4-5a9e1a40c3ae">
    <property name="com.jaspersoft.studio.data.defaultdataadapter" value="Customer Info Data Adapter"/>
    <field name="birthday" class="java.time.LocalDate">
        <fieldDescription><![CDATA[birthday]]></fieldDescription>
    </field>
    <field name="observacao" class="java.lang.String">
        <fieldDescription><![CDATA[observacao]]></fieldDescription>
    </field>
    <field name="orderNumber" class="java.lang.Integer">
        <fieldDescription><![CDATA[orderNumber]]></fieldDescription>
    </field>
    <field name="phone" class="java.lang.String">
        <fieldDescription><![CDATA[phone]]></fieldDescription>
    </field>
    <field name="name" class="java.lang.String">
        <fieldDescription><![CDATA[name]]></fieldDescription>
    </field>
    <field name="email" class="java.lang.String">
        <fieldDescription><![CDATA[email]]></fieldDescription>
    </field>
    <title>
        <band height="79" splitType="Stretch">
            <staticText>
                <reportElement x="0" y="0" width="100" height="30" uuid="db07ac65-15f6-4190-b1db-9d445456f306"/>
                <text><![CDATA[A Title]]></text>
            </staticText>
        </band>
    </title>
    <summary>
        <band height="215" splitType="Stretch">
            <staticText>
                <reportElement x="0" y="0" width="100" height="30" uuid="08c03e87-2b15-4eb1-b404-b7dce6dfb890"/>
                <text><![CDATA[A Summary]]></text>
            </staticText>
            <subreport>
                <reportElement x="0" y="30" width="560" height="150" uuid="c292246e-1ffa-4f08-a783-a0b05b28be76"/>
                <connectionExpression><![CDATA[$P{REPORT_CONNECTION}]]></connectionExpression>
                <subreportExpression><![CDATA["TestSubreport.jasper"]]></subreportExpression>
            </subreport>
        </band>
    </summary>
</jasperReport>

TestSubreport.jrxml

<?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="TestSubreport" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="d5dd9821-786d-4312-81c9-fd77f1abfb8a">
    <property name="com.jaspersoft.studio.data.defaultdataadapter" value="Customer Addresses Data Adapter"/>
    <title>
        <band height="79" splitType="Stretch">
            <staticText>
                <reportElement x="0" y="0" width="100" height="30" uuid="4c9fdc83-4039-4eed-b593-448898853071"/>
                <text><![CDATA[Subreport Title]]></text>
            </staticText>
        </band>
    </title>
    <summary>
        <band height="42" splitType="Stretch">
            <staticText>
                <reportElement x="0" y="0" width="100" height="30" uuid="4bb9ba45-548a-4e87-a543-472b0f960487"/>
                <text><![CDATA[Subreport Summary]]></text>
            </staticText>
        </band>
    </summary>
</jasperReport>

CustomerInfoDataSource.java

package testdatasource;

import java.time.LocalDate;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

public class CustomerInfoDataSource {

    public static Collection<CustomerInfo> getCustomerInfo() {
        List<CustomerInfo> info = new ArrayList<>();
        info.add(new CustomerInfo(1, "Mario", "mario@mario.com.br", LocalDate.now(), "14 912345678", "Observação Mario"));
        return info;
    }
}

CustomerInfo.java

package testdatasource;

import java.time.LocalDate;

public class CustomerInfo {

    private final int orderNumber;
    private final String name;
    private final String email;
    private final LocalDate birthday;
    private final String phone;
    private final String observacao;

    public CustomerInfo(int orderNumber, String name, String email, LocalDate birthday, String phone, String observacao) {
        this.orderNumber = orderNumber;
        this.name = name;
        this.email = email;
        this.birthday = birthday;
        this.phone = phone;
        this.observacao = observacao;
    }

    public int getOrderNumber() {
        return orderNumber;
    }

    public String getName() {
        return name;
    }

    public String getEmail() {
        return email;
    }

    public LocalDate getBirthday() {
        return birthday;
    }

    public String getPhone() {
        return phone;
    }

    public String getObservacao() {
        return observacao;
    }
}

CustomerAddressDataSource.java

package testdatasource;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

public class CustomerAddressDataSource {

    public static Collection<CustomerAddress> getCustomerAddresses() {
        List<CustomerAddress> addresses = new ArrayList<>();
        addresses.add(new CustomerAddress("Casa 1", "Rua Tal", "123", null, "Jardim Márcia", "Agudos", "17400-000", "Perto da caixa d'água"));
        addresses.add(new CustomerAddress("Casa 2", "Rua Tal", "456", null, "Jardim Márcia", "Agudos", "17400-000", "Perto da caixa d'água"));
        return addresses;
    }
}

CustomerAddress.java

package testdatasource;

public class CustomerAddress {

    private final String title;
    private final String street;
    private final String number;
    private final String complement;
    private final String bairro;
    private final String city;
    private final String cep;
    private final String referencePoint;

    public CustomerAddress(String title, String street, String number, String complement, String bairro, String city,
            String cep, String referencePoint) {
        this.title = title;
        this.street = street;
        this.number = number;
        this.complement = complement;
        this.bairro = bairro;
        this.city = city;
        this.cep = cep;
        this.referencePoint = referencePoint;
    }

    public String getTitle() {
        return title;
    }

    public String getStreet() {
        return street;
    }

    public String getNumber() {
        return number;
    }

    public String getComplement() {
        return complement;
    }

    public String getBairro() {
        return bairro;
    }

    public String getCity() {
        return city;
    }

    public String getCep() {
        return cep;
    }

    public String getReferencePoint() {
        return referencePoint;
    }
}

TestMainReport.jrxml的输出：

TestSubreport.jrxml的输出：

Answer 1

怎么了？

您没有为子报表指定dataSource。取而代之的是设置 connectionExpression （<connectionExpression><![CDATA[$P{REPORT_CONNECTION}]]></connectionExpression>）。该连接可以在基于 jdbc 的数据源（报告）的情况下为您提供帮助，而在您的情况下则不会。

解决方案1-使用dataSourceExpression

您应该为子报表指定数据源。您可以这样声明subreport元素：

<subreport>
    <reportElement x="0" y="30" width="560" height="150"/>
    <dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource(testdatasource.CustomerAddressDataSource.getCustomerAddresses())]]></dataSourceExpression>
    <subreportExpression><![CDATA["TestSubreport.jasper"]]></subreportExpression>
</subreport>

在这种情况下， CustomerAddressDataSource 类将用于填充子报表。

解决方案2-使用数据适配器的外部定义

您可以将子报表的数据适配器导出到文件中，并将其保存到与模板相同的文件夹中（如果您不想指定数据适配器文件的路径）。

您可以通过 JSS （ Jaspersoft Studio ）的上下文菜单导出 Data Adapter 定义：

以您的情况为准-内容为 CustomerAddressesDataAdapter.xml ：

<?xml version="1.0" encoding="UTF-8" ?>
<beanDataAdapter class="net.sf.jasperreports.data.bean.BeanDataAdapterImpl"><name>Customer Addresses Data Adapter</name><factoryClass>testdatasource.CustomerAddressDataSource</factoryClass><methodName>getCustomerAddresses</methodName><useFieldDescription>false</useFieldDescription><classpath>C:\somepath\library_with_beans.jar</classpath></beanDataAdapter>

您应该在net.sf.jasperreports.data.adapter属性的帮助下在子报表中指定此适配器。借助此属性，您应该使用 Data Adapter 定义（描述）指定文件名，它可以是带有路径的名称。就我而言，它将是：CustomerAddressesDataAdapter.xml。

子报表模板为：

<?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="TestSubreport" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
    <property name="net.sf.jasperreports.data.adapter" value="CustomerAddressesDataAdapter.xml"/>
    <title>
        <band height="79" splitType="Stretch">
            <staticText>
                <reportElement x="0" y="0" width="100" height="30"/>
                <text><![CDATA[Subreport Title]]></text>
            </staticText>
        </band>
    </title>
    <summary>
        <band height="42" splitType="Stretch">
            <staticText>
                <reportElement x="0" y="0" width="100" height="30"/>
                <text><![CDATA[Subreport Summary]]></text>
            </staticText>
        </band>
    </summary>
</jasperReport>

在主报告中，带有子报告的部分将是：

<subreport>
    <reportElement x="0" y="30" width="560" height="150"/>
    <subreportExpression><![CDATA["TestSubreport.jasper"]]></subreportExpression>
</subreport>

-与以前的情况一样，您无需指定连接。

对于第一个解决方案， JSS 的输出结果将是：

Jaspersoft Studio的主报告未显示Java Bean的基本子报告

1 个答案:

怎么了？

解决方案1-使用dataSourceExpression

解决方案2-使用数据适配器的外部定义

更多信息