jasper report 第一个例子
public void jsperReport(){List purList=new ArrayList();;User user=new User("zhangsan","上海","男",22);purList.add(user);JRBeanCollectionDataSource ds = new JRBeanCollectionDataSource(purList);Map<String,Object> pmap = new HashMap<String,Object>();//map.put来存放parameter，以便在页面中通过$p{}获取pmap.put("address", "address");pmap.put("note", "note");InputStream is = null;try {is = this.getClass().getClassLoader().getResourceAsStream("jasper/xxx.jrxml");JasperDesign jasperDesign = JRXmlLoader.load(is);JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, pmap, ds);if (jasperPrint != null&& !jasperPrint.getPages().isEmpty()) {// 打印预览JasperViewer.viewReport(jasperPrint, false);} else {return;}} catch (JRException e) {e.printStackTrace();return;}finally{if(null != is){try {is.close();} catch (IOException e) {}}}}
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