JasperReport 6.0.3 使用 Zxing 生成二维码答案

【问题标题】：JasperReport 6.0.3 Using Zxing to Generate QR CodesJasperReport 6.0.3 使用 Zxing 生成二维码
【发布时间】：2016-07-26 01:08:51
【问题描述】：

在我的网络应用程序中，我使用 JasperReport 4 和 zxing jar 来生成 QR 码。我已升级到 JasperReports 6.0.3 和 zxing 2.2，现在在尝试生成以前有效的报告时得到以下信息：

00000026 JRFillSubrepo E net.sf.jasperreports.engine.fill.JRFillSubreport prepare Fill 1: exception
                             net.sf.jasperreports.engine.fill.JRExpressionEvalException: Error evaluating expression : 
Source text : JRImageRenderer.getInstance(com.google.zxing.client.j2se.MatrixToImageWriter.toBufferedImage(new com.google.zxing.qrcode.QRCodeWriter().encode($V{left_sn},com.google.zxing.BarcodeFormat.QR_CODE,300 ,150 )), JRRenderable.IMAGE_TYPE_PNG, JRImage.ON_ERROR_TYPE_ERROR)
at net.sf.jasperreports.engine.fill.JREvaluator.evaluate(JREvaluator.java:262)
at net.sf.jasperreports.engine.fill.JRCalculator.evaluate(JRCalculator.java:610)
at net.sf.jasperreports.engine.fill.JRCalculator.evaluate(JRCalculator.java:578)
at net.sf.jasperreports.engine.fill.JRFillElement.evaluateExpression(JRFillElement.java:1015)
at net.sf.jasperreports.engine.fill.JRFillImage.evaluateImage(JRFillImage.java:539)
at net.sf.jasperreports.engine.fill.JRFillImage.evaluate(JRFillImage.java:519)
at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:258)
at net.sf.jasperreports.engine.fill.JRFillBand.evaluate(JRFillBand.java:454)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:2023)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:753)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:263)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:123)
at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:539)
at net.sf.jasperreports.engine.fill.BaseReportFiller.fill(BaseReportFiller.java:393)
at net.sf.jasperreports.engine.fill.JRFillSubreport.fillSubreport(JRFillSubreport.java:715)
at net.sf.jasperreports.engine.fill.JRSubreportRunnable.run(JRSubreportRunnable.java:58)
at net.sf.jasperreports.engine.fill.AbstractThreadSubreportRunner.run(AbstractThreadSubreportRunner.java:202)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:897)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:919)
at java.lang.Thread.run(Thread.java:737)
Caused by: java.lang.NoSuchMethodError: net/sf/jasperreports/engine/JRImageRenderer.getInstance(Ljava/awt/Image;BB)Lnet/sf/jasperreports/engine/JRRenderable;
at SeatRowMatrixLeftSubReportV6_2_1410891674951_480225.evaluate(SeatRowMatrixLeftSubReportV6_2_1410891674951_480225:195)
at net.sf.jasperreports.engine.fill.JREvaluator.evaluate(JREvaluator.java:249)
... 19 more

【问题讨论】：

我写了一个答案，使用zxing生成Stack Overflow: qr-code-integration-in-jasperreport中的二维码。如果符合您的要求，您可以使用它。

标签： java jasper-reports zxing

【解决方案1】：

您使用的 JRImageRenderer 方法已在多个版本前被删除。

等价的表达式如下所示：

net.sf.jasperreports.engine.RenderableUtil
    .getInstance($P{JASPER_REPORTS_CONTEXT})
    .getRenderable(
        com.google.zxing.client.j2se.MatrixToImageWriter.toBufferedImage(
            new com.google.zxing.qrcode.QRCodeWriter().encode(
                $V{left_sn},
                com.google.zxing.BarcodeFormat.QR_CODE,300 ,150
            )
        ), 
        net.sf.jasperreports.engine.type.ImageTypeEnum.PNG,
        net.sf.jasperreports.engine.type.OnErrorTypeEnum.ERROR
    )

【讨论】：