1、首先是用ireport设计报表，个人设计的如下：
设计代码如下：
<?xml version="1.0" encoding="UTF-8"?> <jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="Image" language="groovy" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="0342f951-157c-4709-b85e-daba5d610ba9"> <property name="ireport.zoom" value="1.0"/> <property name="ireport.x" value="0"/> <property name="ireport.y" value="0"/> <style name="normalStyle" isDefault="true" forecolor="#000000" backcolor="#FFFFFF" hAlign="Left" vAlign="Middle" isBlankWhenNull="true" fontName="宋体" fontSize="12" isBold="false" pdfFontName="STSong-Light" pdfEncoding="UniGB-UCS2-H" isPdfEmbedded="true"/> <parameter name="image" class="java.io.InputStream"/> <parameter name="image2" class="java.lang.Object"/> <parameter name="image3" class="java.lang.String"/> <background> <band splitType="Stretch"/> </background> <summary> <band height="351" splitType="Stretch"> <image> <reportElement x="0" y="0" width="113" height="75" uuid="6645d932-3fb1-42a3-aee8-d0c3ff82728b"/> <imageExpression><![CDATA[$P{image3}]]></imageExpression> </image> <image> <reportElement x="113" y="0" width="115" height="75" uuid="0fe88379-8aeb-4e37-883a-bc3418819793"/> <imageExpression><![CDATA[new java.io.File("C:\\Users\\caoyunyun\\Desktop\\下载.jpg")]]></imageExpression> </image> <image> <reportElement x="228" y="0" width="112" height="75" uuid="227fecec-989b-4ff5-a135-40141b097c88"/> <imageExpression><![CDATA[new java.net.URL($P{image3})]]></imageExpression> </image> <image> <reportElement x="340" y="0" width="113" height="75" uuid="63321ae6-538c-4265-bb64-f5a94edb7c98"/> <imageExpression><![CDATA[$P{image}]]></imageExpression> </image> <image> <reportElement x="0" y="75" width="113" height="76" uuid="7282ea0c-0467-435d-b7c5-26d6ef048011"/> <imageExpression><![CDATA[$P{image2}]]></imageExpression> </image> </band> </summary> </jasperReport>这里Image有一个比较重要的属性：on Error Type
默认是选Error,如果图片加载不到（比如图片不存、传参错误之类的），就会报错 Blank是如果加载不到图片，就显示空白，不会报错 Icon是如果加载不到图片，就会显示默认的图标
2、导出代码（用的springMVC注解）
@RequestMapping(value = "reportImageAsPdf") public String reportImageAsPdf(HttpServletRequest request, HttpServletResponse response){ String path = request.getSession().getServletContext().getRealPath("/"); //报表文件的路径 String filepath = path + "WEB-INF/page/report/Image.jasper"; //项目下一张图片的路径 String imagePath = path+"WEB-INF/page/image/b.png"; filepath = filepath.replace("\\", "/"); imagePath = imagePath.replace("\\", "/"); try { ServletOutputStream sosRef = response.getOutputStream(); HashMap map = new HashMap(); //读取项目下的一张图片 InputStream is = new FileInputStream(imagePath); //读取本地的一张图片 Image img = ImageIO.read(new FileInputStream("f:/image/e.jpg")); map.put("image", is);//流 map.put("image2", img);//Image map.put("image3", "https://img0.bdstatic.com/static/searchdetail/img/logo-2X_b99594a.png"); //加载报表文件 JasperReport jasperReport = (JasperReport) JRLoader.loadObject(new File(filepath)); //填充报表 JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, map, new JREmptyDataSource()); List<JasperPrint> jasperPrintList = new ArrayList<JasperPrint>(); jasperPrintList.add(jasperPrint); response.setContentType("application/pdf"); //报表导出 JRPdfExporter exporter = new JRPdfExporter(); SimpleExporterInput sei = SimpleExporterInput.getInstance(jasperPrintList); SimpleOutputStreamExporterOutput soseo = new SimpleOutputStreamExporterOutput(sosRef); exporter.setExporterInput(sei); exporter.setExporterOutput(soseo); exporter.exportReport(); sosRef.flush(); sosRef.close(); is.close(); } catch (IOException e) { e.printStackTrace(); } catch (JRException e) { e.printStackTrace(); } return null; }测试结果如下：
