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当我的报告的一行对于单页来说太长时，它会在下一页继续，但是，如图所示，边框会被切断。

有任何想法吗？

我JRPdfExporter用于将报告导出为 PDF。

在此处输入图像描述

更新：

        DynamicReport dynamicReport;
        ...
        fastReportBuilder.setPageSizeAndOrientation(Page.Page_A4_Landscape());
        fastReportBuilder.setUseFullPageWidth(true);

        //margin 50
        fastReportBuilder.setMargins(MARGIN, MARGIN, MARGIN, MARGIN);

        fastReportBuilder.setDefaultStyles(getTitleStyle(), null, getColumnHeaderStyle(), getColumnDetailsStyle());

   private Style getColumnHeaderStyle() {
        Style hStyle = new Style();
        hStyle.setBorder(Border.THIN());
        hStyle.setTransparent(false);
        hStyle.setBackgroundColor(new Color(0, 142, 175));
        hStyle.setTextColor(Color.WHITE);
        hStyle.setHorizontalAlign(HorizontalAlign.CENTER);
        hStyle.setVerticalAlign(VerticalAlign.MIDDLE);
        hStyle.setFont(new Font(10, MY_FONT, false));
        return hStyle;
    }

    private Style getColumnDetailsStyle() {
        Style cStyle = new Style();
        cStyle.setBorder(Border.THIN());
        cStyle.setFont(new Font(10, MY_FONT, false));
        cStyle.setVerticalAlign(VerticalAlign.TOP);
        return cStyle;
    }
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1 回答 1

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JasperReport PDF 中的边框伪影使用 iReport 5.1.0 设计给了我一个想法。

我最终扩展了 JRPdfExporter。由于某种原因，当数据被剪切并在下一页继续时，单元格框边框的高度和数据被剪切的底部与其左侧相邻单元格不匹配。为了解决这个问题，我存储了以前的单元格边界数据，因此当它到达不匹配的单元格边界数据时，可以对其进行更正。

import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfContentByte;
import net.sf.jasperreports.engine.JRLineBox;
import net.sf.jasperreports.engine.JRPrintElement;
import net.sf.jasperreports.engine.export.JRPdfExporter;

import java.awt.*;

public class CustomPdfExporter extends JRPdfExporter {

    private float previousTop;
    private float previousHeight;
    private float prevY1;
    private float prevY2;

    private static final float FLOAT_ZERO = 0F;

    protected void exportBox(JRLineBox box, JRPrintElement element) {

        if (!isBoxVisible(box)) return;

        pdfContentByte.setLineCap(PdfContentByte.LINE_CAP_PROJECTING_SQUARE);

        float x1 = element.getX() + getOffsetX();
        float y1 = jasperPrint.getPageHeight() - element.getY() - getOffsetY();
        float x2 = element.getX() + getOffsetX() + element.getWidth();
        float y2 = jasperPrint.getPageHeight() - element.getY() - getOffsetY() - element.getHeight();

        Rectangle r = new Rectangle(x1, y2, x2, y1);

        if (previousTop == r.getTop() && previousHeight != r.getHeight()) {
            r.setBottom(prevY2);
        } else {
            prevY2 = y2;
            prevY1 = y1;
            previousHeight = r.getHeight();
            previousTop = r.getTop();
        }

        int borderFlag = 0;

        float lineWidth = 0;
        Color lineColor = null;

        if (box.getLeftPen().getLineWidth().floatValue() > FLOAT_ZERO) {
            borderFlag |= Rectangle.LEFT;
            lineWidth = box.getLeftPen().getLineWidth().floatValue();
            lineColor = box.getLeftPen().getLineColor();
        }

        if (box.getTopPen().getLineWidth().floatValue() > FLOAT_ZERO) {
            borderFlag |= Rectangle.TOP;
            if (lineWidth == 0) {
                lineWidth = box.getTopPen().getLineWidth().floatValue();
                lineColor = box.getTopPen().getLineColor();
            }
        }

        if (box.getRightPen().getLineWidth().floatValue() > FLOAT_ZERO) {
            borderFlag |= Rectangle.RIGHT;
            if (lineWidth == 0) {
                lineWidth = box.getRightPen().getLineWidth().floatValue();
                lineColor = box.getRightPen().getLineColor();
            }
        }

        if (box.getBottomPen().getLineWidth().floatValue() > FLOAT_ZERO) {
            borderFlag |= Rectangle.BOTTOM;
            if (lineWidth == 0) {
                lineWidth = box.getBottomPen().getLineWidth().floatValue();
                lineColor = box.getBottomPen().getLineColor();
            }
        }
        r.setBorder(borderFlag);
        r.setBorderColor(lineColor);
        r.setBorderWidth(lineWidth);

        pdfContentByte.rectangle(r);
        pdfContentByte.stroke();

        pdfContentByte.setLineDash(FLOAT_ZERO);
        pdfContentByte.setLineCap(PdfContentByte.LINE_CAP_ROUND);
    }

    private boolean isBoxVisible(JRLineBox box) {
        return box.getLeftPen().getLineWidth().floatValue() > FLOAT_ZERO
                || box.getTopPen().getLineWidth().floatValue() > FLOAT_ZERO
                || box.getRightPen().getLineWidth().floatValue() > FLOAT_ZERO
                || box.getBottomPen().getLineWidth().floatValue() > FLOAT_ZERO
                ;
    }
}
于 2014-09-03T07:08:15.430 回答