JasperReports字段的自定义类 [英] Custom Class for JasperReports field
问题描述
我想创建一个包含自定义类的报告,如下所示:
I would like to create a report with a custom class as follows:
public class Class1 {
String cl1_f1;
String cl1_f2;
}
public class Class2 {
String cl2_f1;
String cl2_f2;
Class1 cl1_ob1;
}
现在我通过字段在报告中传递 Class2 和JRBeanCollectionDataSource。
Now I pass Class2 in the report through fields and JRBeanCollectionDataSource.
<subDataset name="myitems">
<field name="cl2_f1" class="java.lang.String"/>
<field name="cl2_f2" class="java.lang.String"/>
**<field name="cl1_ob1" class="Class2"/>**
</subDataset>
对于第三个参数,我想提一下它的一个字段。例如: cl1_ob1.cl1_f1
。
For the third parameter, I would like to mention one of its fields. For example: cl1_ob1.cl1_f1
.
我该如何做到这一点?
推荐答案
在Jasper报告设计中,该字段定义如下:
In the Jasper report design, the field will be defined as below:
<field name="cl1_ob1" class="Class1">
<fieldDescription><![CDATA[cl1_ob1]]></fieldDescription>
</field>
可以通过调用getter方法(如果有的话)访问Class1的2个变量或者你可以直接使用变量,具体取决于它的访问权限。例如, $ F {cl1_ob1} .getCl1_f1()可用作文本字段表达式,如下所示:
And the 2 variables of Class1 can be accessed by calling the getter method (if there is one) or you can use the variable directly, depending on it's access privileges. For Example, $F{cl1_ob1}.getCl1_f1() can be used as a text-field expression, as shown below:
<textField>
<reportElement x="36" y="26" width="235" height="20"/>
<textElement textAlignment="Center" verticalAlignment="Middle"/>
<textFieldExpression><![CDATA[$F{cl1_ob1}.getCl1_f1()]]></textFieldExpression>
</textField>
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