Группировка в инструменте iReport

Question

Я использую iReport 5.1.0 инструмент для разработки отчетов.

Мой текущий вывод отчета, как,

------------------------------------------------------------ 
| STUDENT_ID | SUBJECT_NAME | SUBJECT_MARK | STUDENT_NAME | 
------------------------------------------------------------ 
|  1  | Maths  |  25  |  John  | 
------------------------------------------------------------ 
|  1  | English |  35  |  John  | 
------------------------------------------------------------ 
|  2  | Maths  |  30  |  James | 
------------------------------------------------------------ 
|  2  | English |  23  |  James | 
------------------------------------------------------------

, но мне нужно что-то вроде,

------------------------------------------------------------ 
| STUDENT_ID | SUBJECT_NAME | SUBJECT_MARK | STUDENT_NAME | 
------------------------------------------------------------ 
|  1  | Maths  |  25  |  John  | 
      ------------------------------- 
|   | English |  35  |    | 
------------------------------------------------------------ 
|  2  | Maths  |  30  |  James | 
      ------------------------------- 
|   | English |  23  |    | 
------------------------------------------------------------

И это мой .jrxml файл.

<?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="testStudent" language="groovy" pageWidth="792" pageHeight="612" orientation="Landscape" columnWidth="752" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="31359f99-5457-4827-9bdb-e1160fe03bdc"> 
<property name="ireport.zoom" value="1.0"/> 
<property name="ireport.x" value="0"/> 
<property name="ireport.y" value="0"/> 
<field name="studentId" class="java.lang.String"/> 
<field name="studentName" class="java.lang.String"/> 
<field name="subjectName" class="java.lang.String"/> 
<field name="subjectMark" class="java.lang.String"/> 
<background> 
    <band splitType="Stretch"/> 
</background> 
<title> 
    <band height="31" splitType="Stretch"> 
     <staticText> 
      <reportElement uuid="c04d7e4f-68ce-4519-a96d-8c4ba4dd4bba" x="0" y="0" width="205" height="31"/> 
      <textElement> 
       <font size="20" isBold="true"/> 
      </textElement> 
      <text><![CDATA[Test Students]]></text> 
     </staticText> 
    </band> 
</title> 
<pageHeader> 
    <band height="3" splitType="Stretch"/> 
</pageHeader> 
<columnHeader> 
    <band height="23" splitType="Stretch"> 
     <staticText> 
      <reportElement uuid="04cf5bc0-ff69-47e3-af7c-b2702b1d5e90" x="0" y="2" width="100" height="20"/> 
      <box> 
       <pen lineWidth="1.0"/> 
       <topPen lineWidth="1.0"/> 
       <leftPen lineWidth="1.0"/> 
       <bottomPen lineWidth="1.0"/> 
       <rightPen lineWidth="1.0"/> 
      </box> 
      <textElement/> 
      <text><![CDATA[STUDENT_ID]]></text> 
     </staticText> 
     <staticText> 
      <reportElement uuid="b3c3a500-fb03-459f-b600-8ef738b3a795" x="300" y="2" width="100" height="20"/> 
      <box> 
       <pen lineWidth="1.0"/> 
       <topPen lineWidth="1.0"/> 
       <leftPen lineWidth="1.0"/> 
       <bottomPen lineWidth="1.0"/> 
       <rightPen lineWidth="1.0"/> 
      </box> 
      <textElement/> 
      <text><![CDATA[STUDENT_NAME]]></text> 
     </staticText> 
     <staticText> 
      <reportElement uuid="04c057c8-e4cb-4ad9-876f-40ec3af568c4" x="100" y="2" width="100" height="20"/> 
      <box> 
       <pen lineWidth="1.0"/> 
       <topPen lineWidth="1.0"/> 
       <leftPen lineWidth="1.0"/> 
       <bottomPen lineWidth="1.0"/> 
       <rightPen lineWidth="1.0"/> 
      </box> 
      <textElement/> 
      <text><![CDATA[SUBJECT_NAME]]></text> 
     </staticText> 
     <staticText> 
      <reportElement uuid="3f78e926-ed9e-4306-b0d7-cc03243bef4b" x="200" y="2" width="100" height="20"/> 
      <box> 
       <pen lineWidth="1.0"/> 
       <topPen lineWidth="1.0"/> 
       <leftPen lineWidth="1.0"/> 
       <bottomPen lineWidth="1.0"/> 
       <rightPen lineWidth="1.0"/> 
      </box> 
      <textElement/> 
      <text><![CDATA[SUBJECT_MARK]]></text> 
     </staticText> 
    </band> 
</columnHeader> 
<detail> 
    <band height="21" splitType="Stretch"> 
     <textField> 
      <reportElement uuid="e15a2c2c-76f7-40bb-bb88-dde1f89ff2d5" x="0" y="0" width="100" height="20"/> 
      <box> 
       <pen lineWidth="1.0"/> 
       <topPen lineWidth="1.0"/> 
       <leftPen lineWidth="1.0"/> 
       <bottomPen lineWidth="1.0"/> 
       <rightPen lineWidth="1.0"/> 
      </box> 
      <textElement/> 
      <textFieldExpression><![CDATA[$F{studentId}]]></textFieldExpression> 
     </textField> 
     <textField> 
      <reportElement uuid="6da8fc6d-918b-4984-b374-57ab8669de80" x="300" y="0" width="100" height="20"/> 
      <box> 
       <pen lineWidth="1.0"/> 
       <topPen lineWidth="1.0"/> 
       <leftPen lineWidth="1.0"/> 
       <bottomPen lineWidth="1.0"/> 
       <rightPen lineWidth="1.0"/> 
      </box> 
      <textElement/> 
      <textFieldExpression><![CDATA[$F{studentName}]]></textFieldExpression> 
     </textField> 
     <textField> 
      <reportElement uuid="827a067f-e2a2-4a2e-a8f0-bf765e6ed241" x="100" y="0" width="100" height="20"/> 
      <box> 
       <pen lineWidth="1.0"/> 
       <topPen lineWidth="1.0"/> 
       <leftPen lineWidth="1.0"/> 
       <bottomPen lineWidth="1.0"/> 
       <rightPen lineWidth="1.0"/> 
      </box> 
      <textElement/> 
      <textFieldExpression><![CDATA[$F{subjectName}]]></textFieldExpression> 
     </textField> 
     <textField> 
      <reportElement uuid="23463a34-0af0-4897-8745-6fe477919a83" x="200" y="0" width="100" height="20"/> 
      <box> 
       <pen lineWidth="1.0"/> 
       <topPen lineWidth="1.0"/> 
       <leftPen lineWidth="1.0"/> 
       <bottomPen lineWidth="1.0"/> 
       <rightPen lineWidth="1.0"/> 
      </box> 
      <textElement/> 
      <textFieldExpression><![CDATA[$F{subjectMark}]]></textFieldExpression> 
     </textField> 
    </band> 
</detail> 
<columnFooter> 
    <band height="4" splitType="Stretch"/> 
</columnFooter> 
<pageFooter> 
    <band height="5" splitType="Stretch"/> 
</pageFooter> 
<summary> 
    <band height="4" splitType="Stretch"/> 
</summary></jasperReport> 

Может кто-нибудь мне помочь? Заранее спасибо.

Answer 1

Прежде всего, вы должны создать группу данных.

1.go to report inspector 
2.right click on the jrxml name at the top of the report inpector 
3.select add report group. 
4.input the group name 
5. select the object, in your case student_id from the 'group by the following report object' 
6. click next 
7. Chose add report group header or footer or both if you want to. (in your case i think you should not add report group header or footer) 

Ваша группа отчетов будет добавлена. Попробуйте восстановить отчет. Вы также должны снять флажок «распечатать повторяющиеся значения»