Jasper Reports 5.0.1中的文件解析器

Jasper Reports 5.0.1中的文件解析器

浏览源代码后，我找到了解决方案。

JRXML imageexpression标签：

<band height="79" splitType="Stretch"><image scaleImage="Fillframe" isLazy="true" onErrorType="Blank">    <reportElement uuid="3340bf0f-8471-45e9-8ea4-bdf44a7c0e68" x="0" y="0" width="150" height="69"/>    <imageexpression ><![CDATA["image.jpg"]]></imageexpression></image>

Java代码段：

FileResolver resolver = new FileResolver() {@Overridepublic File resolveFile(String filename) {    return new File("/some/path");}};InputStream jasperfile = getClass().getClassLoader().getResourceAsStream("file.jasper");LocalJasperReportsContext ctx = new LocalJasperReportsContext(DefaultJasperReportsContext.getInstance());ctx.setClassLoader(getClass().getClassLoader());ctx.setFileResolver(resolver);JasperReport jasperReport = (JasperReport) JRLoader.loadObject(jasperfile);JasperFillManager fillmgr = JasperFillManager.getInstance(ctx);JasperExportManager exmgr = JasperExportManager.getInstance(ctx);JasperPrint jasperPrint = fillmgr.fill(jasperReport, parameters, beanColDataSource);ByteArrayOutputStream pdfBytes = new ByteArrayOutputStream();exmgr.exportToPdfStream(jasperPrint, pdfBytes);

您必须创建一个新的上下文并将其传递给JasperFillManager和JasperExportManager。