JasperReport那些事儿（一）——iRep…

http://www.blogjava.net/heis/archive/2009/02/16/254978.html

xml编码问题

field变量的描述信息一定要填

 

使用XML作为数据源的例子

private static void printXMLSource()
 {
  String jrxml = "D:\\jasper_xml.jrxml";
  String jasperPath = "D:\\temp\\iReport-1.3.3\\jasper_xml.jasper";
  try
  {
   JasperCompileManager.compileReportToFile(jrxml);
   
   JasperReport jasperReport = (JasperReport) JRLoader.loadObject(jasperPath);
   
   Map parameters = new HashMap();

   parameters.put(JRXPathQueryExecuterFactory.XML_DATE_PATTERN, "yyyy-MM-dd");
   parameters.put(JRXPathQueryExecuterFactory.XML_NUMBER_PATTERN, "#,##0.##");
   parameters.put(JRXPathQueryExecuterFactory.XML_LOCALE, Locale.CHINESE);
   parameters.put(JRParameter.REPORT_LOCALE, Locale.CHINA);
   parameters.put("SUBREPORT_DIR", "D:\\temp\\iReport-1.3.3\");只表路径
   

   Document document = readStringDocument(readFile("D:\\person2.xml"));
   
   parameters.put(JRXPathQueryExecuterFactory.PARAMETER_XML_DATA_DOCUMENT, document);
   
   JasperFillManager.fillReportToFile(jasperPath, parameters);
   JasperPrint print = JasperFillManager.fillReport(jasperReport, parameters);
   
   //使用JRPdfExproter导出器导出pdf  
            JRPdfExporter exporter = new JRPdfExporter();  
           
            // 设置JasperPrintList  
            exporter.setParameter(JRPdfExporterParameter.JASPER_PRINT, print); 
   
            FileOutputStream fos = new FileOutputStream("D:\\jasper_xml2.pdf");
          
            // 设置导出流
            exporter.setParameter(JRPdfExporterParameter.OUTPUT_STREAM, fos);
           
            // 开始导出
            exporter.exportReport();
           
            fos.flush();
            fos.close();
            fos = null;
  } catch (Throwable e)
  {
    e.printStackTrace();
    System.out.println("==============" + e.toString());
  }
 }

 

读取XML文件，在IMB系统中要用这种方法读取才行

public static String readFile(String filepath)
 {
  String result = "";
  StringBuffer sBuffer;
  try
  {
   sBuffer = new StringBuffer();
   FileInputStream fis=new FileInputStream(filepath);
   BufferedInputStream bis=new BufferedInputStream(fis);
   String tempStr;
   byte[] b = new byte[1024];
   int i = 0;
   while ((i = bis.read(b)) > 0)
   {
       tempStr=new String(b,0,i,"utf-8");指定当前数据的编码
       sBuffer.append(tempStr);
   }
   result = sBuffer.toString();
  } catch (FileNotFoundException e)
  {
   e.printStackTrace();
  } catch (IOException e)
  {
   e.printStackTrace();
  }

  return result;
 }

 

Parameter作为数据源

private static void printFirst()
 {
  String jrxml = "D:\\passwordEnvelope_first.jrxml";
  String jasperPath = "D:\\passwordEnvelop_first.jasper";
  try
  {
   JasperCompileManager.compileReportToFile(jrxml);
   System.out.println("===== jasper create finished ===contractName=");
   
   JasperReport jasperReport = (JasperReport) JRLoader.loadObject(jasperPath);
   
   Map parameters = new HashMap();

   parameters.put("head_img","D:\\headsh.jpg");
   parameters.put("contractCode","12344****6中午");
   parameters.put("password","111****1116我测试");
   parameters.put("company","上海南京路");
   parameters.put("line_img","D:\\project\\AIA_ETA\\line.jpg");
   
   parameters.put("contractName","中华世纪旅行社");
   
   JasperPrint print = JasperFillManager.fillReport(jasperReport, parameters, new JREmptyDataSource());
   
   //使用JRPdfExproter导出器导出pdf  
            JRPdfExporter exporter = new JRPdfExporter();  
           
            // 设置JasperPrintList  
            exporter.setParameter(JRPdfExporterParameter.JASPER_PRINT, print); 
           
            FileOutputStream fos = new FileOutputStream("D:\\passwordEnvelope_first.pdf");
          
            // 设置导出流
            exporter.setParameter(JRPdfExporterParameter.OUTPUT_STREAM, fos);
           
            // 开始导出
            exporter.exportReport();
           
            fos.flush();
            fos.close();
            fos = null;
  } catch (Throwable e)
  {
    e.printStackTrace();
    System.out.println("==============" + e.toString());
  }
 }

 

如果你还不知道jasperreport和ireport，那你可以参考我的上一篇文章，或者谷歌百度一下。好了，废话少说，Let’s start，Go！
      我的环境是iReport3.0+JDK6.0。
      先看看效果。
  
1）    准备数据源，这里使用XML文件（使用UTF8编码）作为数据源。

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