How to draw a border around both the column header

问题:

I have a requirement to have a border that will encapsulate all the details + the column header in a report made in JasperReports + iReport. But if I try to draw a rect or a frame that goes in both the columns header, the details and column footer, I get an error saying that the element position is invalid.

I guess one option would be to use images (just like the good old HTML times without CSS...) but it would be a PITA since if a field overflow or if someone change the height or the width of a section, the image will have to change...

Any other alternatives?

Thanks.

回答1:

To do this you can put frames into each of the bands, setting their size to fill the band completely. Then set the borders on the frames to replicate a border around all three bands, so the header has a border at the top, left and right; the footer has bottom, left and right; and the detail band has a border only on the left and right. See the example code below.

<columnHeader>
    <band height="61" splitType="Stretch">
        <frame>
            <reportElement x="0" y="0" width="555" height="61"/>
            <box>
                <topPen lineWidth="2.0" lineStyle="Solid"/>
                <leftPen lineWidth="2.0" lineStyle="Solid"/>
                <rightPen lineWidth="2.0" lineStyle="Solid"/>
            </box>
        </frame>
    </band>
</columnHeader>
<detail>
    <band height="125" splitType="Stretch">
        <frame>
            <reportElement x="0" y="0" width="555" height="125"/>
            <box>
                <leftPen lineWidth="2.0" lineStyle="Solid"/>
                <rightPen lineWidth="2.0" lineStyle="Solid"/>
            </box>
        </frame>
    </band>
</detail>
<columnFooter>
    <band height="45" splitType="Stretch">
        <frame>
            <reportElement x="0" y="0" width="555" height="45"/>
            <box>
                <leftPen lineWidth="2.0" lineStyle="Solid"/>
                <bottomPen lineWidth="2.0" lineStyle="Solid"/>
                <rightPen lineWidth="2.0" lineStyle="Solid"/>
            </box>
        </frame>
    </band>
</columnFooter>

The result should look like this:

回答2:

you can use the background-band on which you draw a rectangle for that purpose .

回答3:

Using a background band with a Frame or Rectangle seems to work best, although, if the first and subsequent pages have different Header Elements, sizing the Frame/Rectangle can be a bit tricky.

One way round this is to add a Frame/Rectangle on the any Title, Header and Footer bands, which is Opaque/White and sent to the Back. This will obscure the Background Image.

This means that it will just be show through for the Detail Band, so the Header and Footer Frame may need a bottom/top border depending on what you want.

(I found that the problem with using a Frame in the Detail band with just side borders doesn't quite work as sometime the repeated detail band does not fill each page, so gaps are left in the borders at the sides)

回答4:

1. Click your jasper report.
2. Go to basic Elements.
3. choose rectangle.