iReport+jasperReport之JDBC数据源

iReport+jasperReport之JDBC数据源

iReport画出来的报表可以满足我们大部分的需要，所以采用iReport 编辑jrxml文件是我们的首选啦！当然掌握jrxml文件的结构也是必须的。
        采用JDBC数据源必须有数据库支持啊！我们新建一个test表，其中有pid、name、sex、password、department、age字段，为了方便期间我们定义这些字段全部为String类型。
        在iReport中新建一报表，报表有title、pageHeader、columnHeader、detail、columnFooter、pageFooter、lastPageFooter、summary等部分，被成为Report section

title：顾名思义是指报表的标题哦，它会显示在报表的最上面，如果有多页只会出现在第一页的最上面。pageHeader：每页的标题，如果有多页每页的开始都会显示此部分内容。
columnHeader：显示报表的列头不经常使用。
detail：这个就不用说了吧！
有header就会出现footer啦！lastPageFooter只会出现在最后一页。summay会出现在每一页数据上，主要是为了展示一些统计信息，比如当前的时间，页数信息啦！

新建一parameter

此参数可作为报表的标题使用，我们在程序中动态的传递给报表。
    document structure－－－》parameter里找到reportTitle参数拖至title区域，右击编辑reportTitle域的属性，在font选项里找到Markup设置为HTML，TextField选项里设置Text Field Expreesion为

"<font color='blue' size='5'>"+$P{reportTitle}+"</font>"

下来就是设置报表的Field字段了，不需要我们一个个的新建那些字段啦！
选择Data--->Report Query在Report Query选项里选择Query Language为SQL，写入SqL语句

select * from test order by pid DESC

这时所有的field会出现在下面(SQL是正确的)
关闭对话框在document structure－－－》field中就会出现我们需要的field，之后拖到相应的位置，关于怎么美化报表这个本人也不是很懂哦！
如果需要显示一下当前的页数信息也可以自己托动Variables里的PAGE_NUMBER完成页数的显示。完整的jrxml文件如下：

<?xml version="1.0" encoding="UTF-8"  ?>
<!-- Created with iReport - A designer for JasperReports -->
<!DOCTYPE jasperReport PUBLIC "//JasperReports//DTD Report Design//EN" "http://jasperreports.sourceforge.net/dtds/jasperreport.dtd">
<jasperReport
         name="Person"
         columnCount="1"
         printOrder="Vertical"
         orientation="Portrait"
         pageWidth="595"
         pageHeight="842"
         columnWidth="535"
         columnSpacing="0"
         leftMargin="30"
         rightMargin="30"
         topMargin="20"
         bottomMargin="20"
         whenNoDataType="NoPages"
         isTitleNewPage="false"
         isSummaryNewPage="false">
    <property name="ireport.scriptlethandling" value="0" />
    <property name="ireport.encoding" value="UTF-8" />
    <import value="java.util.*" />
    <import value="net.sf.jasperreports.engine.*" />
    <import value="net.sf.jasperreports.engine.data.*" />

    <parameter name="reportTitle" isForPrompting="true" class="java.lang.String"/>
    <queryString><![CDATA[select * from test order by pid DESC]]></queryString>

    <field name="pid" class="java.lang.String"/>
    <field name="name" class="java.lang.String"/>
    <field name="sex" class="java.lang.String"/>
    <field name="password" class="java.lang.String"/>
    <field name="department" class="java.lang.String"/>
    <field name="age" class="java.lang.String"/>

        <background>
            <band height="6"  isSplitAllowed="true" >
            </band>
        </background>
        <title>
            <band height="29"  isSplitAllowed="true" >
                <textField isStretchWithOverflow="false" isBlankWhenNull="false" evaluationTime="Now" hyperlinkType="None"  hyperlinkTarget="Self" >
                    <reportElement
                        x="138"
                        y="0"
                        width="258"
                        height="29"
                        key="textField"/>
                    <box></box>
                    <textElement textAlignment="Center" verticalAlignment="Middle" markup="html">
                        <font pdfFontName="Helvetica-Bold" isBold="true"/>
                    </textElement>
                <textFieldExpression   class="java.lang.String"><![CDATA["<font color='blue' size='5'>"+$P{reportTitle}+"</font>"]]></textFieldExpression>
                </textField>
            </band>
        </title>
        <pageHeader>
            <band height="0"  isSplitAllowed="true" >
            </band>
        </pageHeader>
        <columnHeader>
            <band height="0"  isSplitAllowed="true" >
            </band>
        </columnHeader>
        <detail>
            <band height="22"  isSplitAllowed="true" >
                <textField isStretchWithOverflow="false" isBlankWhenNull="false" evaluationTime="Now" hyperlinkType="None"  hyperlinkTarget="Self" >
                    <reportElement
                        x="0"
                        y="0"
                        width="100"
                        height="18"
                        key="textField"/>
                    <box></box>
                    <textElement verticalAlignment="Top">
                        <font/>
                    </textElement>
                <textFieldExpression   class="java.lang.String"><![CDATA[$F{pid}]]></textFieldExpression>
                </textField>
                <textField isStretchWithOverflow="false" isBlankWhenNull="false" evaluationTime="Now" hyperlinkType="None"  hyperlinkTarget="Self" >
                    <reportElement
                        x="100"
                        y="0"
                        width="93"
                        height="18"
                        key="textField"/>
                    <box></box>
                    <textElement verticalAlignment="Top">
                        <font/>
                    </textElement>
                <textFieldExpression   class="java.lang.String"><![CDATA[$F{name}]]></textFieldExpression>
                </textField>
                <textField isStretchWithOverflow="false" isBlankWhenNull="false" evaluationTime="Now" hyperlinkType="None"  hyperlinkTarget="Self" >
                    <reportElement
                        x="193"
                        y="0"
                        width="58"
                        height="18"
                        key="textField"/>
                    <box></box>
                    <textElement verticalAlignment="Top">
                        <font/>
                    </textElement>
                <textFieldExpression   class="java.lang.String"><![CDATA[$F{sex}]]></textFieldExpression>
                </textField>
                <textField isStretchWithOverflow="false" isBlankWhenNull="false" evaluationTime="Now" hyperlinkType="None"  hyperlinkTarget="Self" >
                    <reportElement
                        x="251"
                        y="0"
                        width="100"
                        height="18"
                        key="textField"/>
                    <box></box>
                    <textElement verticalAlignment="Top">
                        <font/>
                    </textElement>
                <textFieldExpression   class="java.lang.String"><![CDATA[$F{password}]]></textFieldExpression>
                </textField>
                <textField isStretchWithOverflow="false" isBlankWhenNull="false" evaluationTime="Now" hyperlinkType="None"  hyperlinkTarget="Self" >
                    <reportElement
                        x="351"
                        y="0"
                        width="100"
                        height="18"
                        key="textField"/>
                    <box></box>
                    <textElement verticalAlignment="Top">
                        <font/>
                    </textElement>
                <textFieldExpression   class="java.lang.String"><![CDATA[$F{department}]]></textFieldExpression>
                </textField>
                <textField isStretchWithOverflow="false" pattern="" isBlankWhenNull="false" evaluationTime="Now" hyperlinkType="None"  hyperlinkTarget="Self" >
                    <reportElement
                        x="451"
                        y="0"
                        width="84"
                        height="18"
                        key="textField"/>
                    <box></box>
                    <textElement verticalAlignment="Top">
                        <font/>
                    </textElement>
                <textFieldExpression   class="java.lang.String"><![CDATA[$F{age}]]></textFieldExpression>
                </textField>
                <line direction="TopDown">
                    <reportElement
                        x="0"
                        y="17"
                        width="535"
                        height="1"
                        key="line-1"/>
                    <graphicElement stretchType="NoStretch"/>
                </line>
            </band>
        </detail>
        <columnFooter>
            <band height="0"  isSplitAllowed="true" >
            </band>
        </columnFooter>
        <pageFooter>
            <band height="24"  isSplitAllowed="true" >
                <textField isStretchWithOverflow="false" isBlankWhenNull="false" evaluationTime="Now" hyperlinkType="None"  hyperlinkTarget="Self" >
                    <reportElement
                        x="387"
                        y="5"
                        width="22"
                        height="18"
                        key="textField"/>
                    <box></box>
                    <textElement textAlignment="Center" verticalAlignment="Middle">
                        <font/>
                    </textElement>
                <textFieldExpression   class="java.lang.Integer"><![CDATA[$V{PAGE_NUMBER}]]></textFieldExpression>
                </textField>
                <staticText>
                    <reportElement
                        x="373"
                        y="5"
                        width="14"
                        height<span style

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• 2009-09-02 16:34
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