我试图将图像从Postgresql数据库加载到jaspersoft ireports(4.0),但我收到一个错误.
在Postgresql中,图像存储为bytea对象.在ireports中,我将image字段的属性更改为java.io.InputStream.
将图像放入报表后,设置了以下属性：
表达式类：java.io.InputStream
图像表达：图像字段
Error filling print... Image read Failed. Setting up the file resolver... net.sf.jasperreports.engine.JRException: Image read Failed. at net.sf.jasperreports.engine.util.JRJdk14ImageReader.readImage(JRJdk14ImageReader.java:73) at net.sf.jasperreports.engine.util.jrimageLoader.loadImage(jrimageLoader.java:245) at net.sf.jasperreports.engine.jrimageRenderer.getimage(jrimageRenderer.java:476) at net.sf.jasperreports.engine.jrimageRenderer.getDimension(jrimageRenderer.java:512) at net.sf.jasperreports.engine.fill.JRFillImage.fitimage(JRFillImage.java:1251) at net.sf.jasperreports.engine.fill.JRFillImage.prepare(JRFillImage.java:1173) at net.sf.jasperreports.engine.fill.JRFillElementContainer.prepareElements(JRFillElementContainer.java:329) at net.sf.jasperreports.engine.fill.JRFillBand.fill(JRFillBand.java:419) at net.sf.jasperreports.engine.fill.JRFillBand.fill(JRFillBand.java:378) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:2038) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:760) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:270) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:128) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:946) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:845) at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:58) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:417) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:247) at com.jaspersoft.ireport.designer.compiler.IReportCompiler.run(IReportCompiler.java:877) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997) Print not filled. Try to use an EmptyDataSource...
解决方法
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