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我用struts2写我的 jasper 报告问题。以下是我尝试执行的代码：

struts.xml 包含：

<action name="myJasperTest1" class="temp.JasperAction1">
    <result name="success" type="jasper">
        <param name="location">/jasper/our_compiled_template.jasper</param>
        <param name="dataSource">myList</param>
        <param name="format">PDF</param>
    </result>
</action>

我的 JasperAction1 包含：

import java.util.ArrayList;
import java.util.List;
import java.io.FileInputStream;
import com.opensymphony.xwork2.ActionSupport;
import com.sufalam.business.model.util.LegacyJasperInputStream;
import com.sufalam.business.finance.model.bean.Account;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.design.JasperDesign;
import net.sf.jasperreports.engine.xml.JRXmlLoader;

public class JasperAction1 extends ActionSupport {

    /** List to use as our JasperReports dataSource. */
    private List<Account> myList;

    public String execute() throws Exception {

        // Create some imaginary persons.
        Account a1 = new Account();
        Account a2 = new Account();

        a1.setId(77);
        a1.setName("aaa");
        a2.setId(88);
        a2.setName("bbb");
        // Store people in our dataSource list (normally would come from database).
        myList = new ArrayList<Account>();
        myList.add(a1);
        myList.add(a2);

        // Normally we would provide a pre-compiled .jrxml file
        // or check to make sure we don't compile on every request.
        try {
            JasperDesign design = JRXmlLoader.load(
                    new LegacyJasperInputStream(new FileInputStream("F://backup//report2.jrxml")));

            JasperCompileManager.compileReportToFile(design, "F://backup//our_compiled_template1.jasper");
        } catch (Exception e) {
            e.printStackTrace();
            return ERROR;
        }

        return SUCCESS;
    }

    public List<Account> getMyList() {
        return myList;
    }
}

我正在使用Netbeans的iReport插件生成 .jrxml 文件。使用iReport向导设计我的页面后，我的 our_jasper_template.jrxml 文件包含以下代码：

<?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="null" pageWidth="595" pageHeight="842" columnWidth="535" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
    <queryString language="SQL">
            <![CDATA[SELECT
         account_master."name" AS account_master_name,
         account_master."id" AS account_master_id
    FROM
         "public"."account_master" account_master]]>
    </queryString>
    <field name="account_master_name" class="java.lang.String"/>
    <field name="account_master_id" class="java.lang.Integer"/>
    <title>
        <band height="58">
            <line>
                <reportElement x="0" y="8" width="555" height="1"/>
            </line>
            <line>
                <reportElement positionType="FixRelativeToBottom" x="0" y="51" width="555" height="1"/>
            </line>
            <staticText>
                <reportElement x="65" y="13" width="424" height="35"/>
                <textElement textAlignment="Center">
                    <font size="26" isBold="true"/>
                </textElement>
                <text><![CDATA[Classic template]]>
                </text>
            </staticText>
        </band>
    </title>
    <detail>
        <band height="40">
            <staticText>
                <reportElement x="0" y="0" width="139" height="20"/>
                <textElement>
                    <font size="12"/>
                </textElement>
                <text><![CDATA[account_master_name]]>
                </text>
            </staticText>
            <textField>
                <reportElement x="139" y="0" width="416" height="20"/>
                <textElement>
                    <font size="12"/>
                </textElement>
                <textFieldExpression class="java.lang.String"><![CDATA[$F{account_master_name}]]>
                </textFieldExpression>
            </textField>
            <staticText>
                <reportElement x="0" y="20" width="139" height="20"/>
                <textElement>
                    <font size="12"/>
                </textElement>
                <text><![CDATA[account_master_id]]>
                </text>
            </staticText>
            <textField>
                <reportElement x="139" y="20" width="416" height="20"/>
                <textElement>
                    <font size="12"/>
                </textElement>
                <textFieldExpression class="java.lang.Integer"><![CDATA[$F{account_master_id}]]>
                </textFieldExpression>
            </textField>
        </band>
    </detail>
    <pageFooter>
        <band height="26">
            <textField evaluationTime="Report" pattern="" isBlankWhenNull="false">
                <reportElement key="textField" x="516" y="6" width="36" height="19" forecolor="#000000" backcolor="#FFFFFF"/>
                <box>
                    <topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
                    <leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
                    <bottomPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
                    <rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
                </box>
                <textElement>
                    <font size="10"/>
                </textElement>
                <textFieldExpression class="java.lang.String"><![CDATA["" + $V{PAGE_NUMBER}]]>
                </textFieldExpression>
            </textField>
            <textField pattern="" isBlankWhenNull="false">
                <reportElement key="textField" x="342" y="6" width="170" height="19" forecolor="#000000" backcolor="#FFFFFF"/>
                <box>
                    <topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
                    <leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
                    <bottomPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
                    <rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
                </box>
                <textElement textAlignment="Right">
                    <font size="10"/>
                </textElement>
                <textFieldExpression class="java.lang.String"><![CDATA["Page " + $V{PAGE_NUMBER} + " of "]]>
                </textFieldExpression>
            </textField>
            <textField pattern="" isBlankWhenNull="false">
                <reportElement key="textField" x="1" y="6" width="209" height="19" forecolor="#000000" backcolor="#FFFFFF"/>
                <box>
                    <topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
                    <leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
                    <bottomPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
                    <rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
                </box>
                <textElement>
                    <font size="10"/>
                </textElement>
                <textFieldExpression class="java.util.Date"><![CDATA[new Date()]]>
                </textFieldExpression>
            </textField>
        </band>
    </pageFooter>
</jasperReport>

现在我面临的问题是，当我执行这个动作类时，它会给我以下 pdf 格式的输出： 替代文字

4

2 回答 2

1

只需从您的 .jrxml 文件中删除查询字符串部分并使用帐户类的变量名称更改您的字段名称。

于 2009-06-06T11:30:19.920 回答
0

尽管我可能没有最终的解决方案，但有一个细节对我来说看起来很奇怪：您的字段似乎account_master_name与account_master_id您的 Account 类的属性名称并不相符。不应该是idandname吗？对我来说很奇怪的是它在填写报告时应该会产生错误......

我对 Struts 不太熟悉，但我不明白它会产生怎样的影响。

于 2009-06-01T07:38:29.660 回答