由于項目業務需要，需要開發一個打印票據的需求。于是前面找了一堆資料來簡單學習了下，就開始自己動手開發起來了，下面直接細說。
首先小票模板的設計就用到了Jaspersoft Studio這個軟件（如果需要可以聯系我或者官網上能下載到： https://community.jaspersoft.com/community-download）。

1.模板設計。

設計模板的步驟就不一一細說了，前面轉載的文章也有提到，可以去看看。直接上已經做好的模板，如下圖：
數據來源是 json數據源，先寫一個json文件并且類型、名稱要對應與之連接。

而兩者連接需要xml文件，再新建一個xml文件。


最后進行連接匹配，如下圖：



最后將其生成的.jasper文件放到項目中去，如圖：

2.工具類。

到此，模板就設計完成了，下面就是利用java代碼進行賦值并且連接打印機打印了。
給出jasperReport的工具類，代碼如下：

package com.yd.wb.report.jasperReport;import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.OutputStream; import java.net.URLEncoder; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.UUID;import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;import net.sf.jasperreports.engine.JRPrintPage; import net.sf.jasperreports.engine.JasperFillManager; import net.sf.jasperreports.engine.JasperPrint; import net.sf.jasperreports.engine.JasperReport; import net.sf.jasperreports.engine.export.HtmlExporter; import net.sf.jasperreports.engine.export.JRPdfExporter; import net.sf.jasperreports.engine.export.ooxml.JRXlsxExporter; import net.sf.jasperreports.engine.query.JsonQueryExecuterFactory; import net.sf.jasperreports.engine.util.JRLoader; import net.sf.jasperreports.export.SimpleExporterInput; import net.sf.jasperreports.export.SimpleHtmlExporterOutput; import net.sf.jasperreports.export.SimpleOutputStreamExporterOutput; import net.sf.jasperreports.export.SimpleXlsxReportConfiguration;import org.apache.log4j.Logger; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.core.io.ResourceLoader; import org.springframework.stereotype.Component;import util.JCDFJsonUtil;/*** @Description 打印PDF格式報表的工具類* 使用步驟:* 1.通過spring mvc生成json格式的業務數據* 2.將上一步生成的json數據保存成文件(調用exportJasperReport時將ReportType設置成JSON)* 3.在Jaspersoft@Studio創建DataAdapter, 類型為JSON File, 將上一步生成的文件作為數據源* 4.在Jaspersoft@Studio創建Jasper Report* 5.將編譯好的jasper復制到WEB-INF下的report目錄下* 6.調整Controller將輸出的ReportType調整成真實的類型, 運行輸出* 注意: * 在Jasper Report創建時一定要增加一個 SUBREPORT_DIR 用于存儲子報表路徑* */ @Component public class JasperResolver {private Logger logger = Logger.getLogger(JasperResolver.class);@Autowiredprivate ResourceLoader resourceLoader;/*** @Description 將JSON填充到JasperReport格式化輸出* @param data 單報表輸出的數據 Map<String, Object>* @param reportFileName 報表文件名* @param reportType 報表類型* @return void* */public void exportJasperReport(Map<String, Object> data, String reportFileName, ReportType reportType, HttpServletRequest request, HttpServletResponse response) throws Exception{List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();list.add(data);exportJasperReport(list, reportFileName, reportType, request, response);}/*** @Description 將JSON填充到JasperReport格式化輸出, 支持連打, 每一個List下的Item為一個Report* @param data 多報表輸出 List<Map<String, Object>>* @param reportFileName 報表文件名* @param reportType 報表類型* @return void* */public void exportJasperReport(List<Map<String, Object>> data, String reportFileName, ReportType reportType, HttpServletRequest request, HttpServletResponse response) throws Exception{exportJasperReport(data, "/WEB-INF/report/", reportFileName, reportType, request, response);}/*** @Description 具體的實現方法* @param data 要打印的數據* @param reportPath jasper文件所在的路徑* @param reportFileName 報表文件名* @param reportType 報表類型* @return void* */private void exportJasperReport(List<Map<String, Object>> data, String reportPath, String reportFileName, ReportType reportType, HttpServletRequest request, HttpServletResponse response) throws Exception{OutputStream os = null;JasperPrint jasperPrint = null;try {//JSON直接輸出if(reportType == ReportType.JSON){ response.setContentType("text/html;charset=UTF-8");response.setHeader("Pragma", "no-cache");response.setHeader("Cache-Control", "no-cache, must-revalidate");response.setHeader("Pragma", "no-cache");try {response.getWriter().write(JCDFJsonUtil.fromObjctToJson(data, null));response.getWriter().flush();response.getWriter().close();} catch (IOException e) {e.printStackTrace();}return;}//獲取頁面輸出流os = response.getOutputStream(); //設置頁面類型及編碼response.setContentType(reportType.getMimeType() + "; charset=utf-8"); //清除頁面緩存response.setDateHeader("Expires", 0); //設置文件名response.setHeader("Content-Disposition", "inline;filename=" + URLEncoder.encode(UUID.randomUUID() + reportType.getSuffix(), "utf-8"));JasperReport report = (JasperReport)JRLoader.loadObject(resourceLoader.getResource(reportPath + reportFileName + ".jasper").getInputStream());//創建HashMap來添加報表參數Map<String, Object> parameters = new HashMap<String, Object>();//添加標題參數, 確保密鑰與JasPrar報表中命名參數的名稱相同String classesPath = this.getClass().getClassLoader().getResource("").getPath();String servletContextRealPath = classesPath.substring(0, classesPath.lastIndexOf("WEB-INF"));parameters.put("SUBREPORT_DIR", servletContextRealPath + reportPath);for(Map<String, Object> item : data){String json = JCDFJsonUtil.fromObjctToJson(item, null);//將JSON字符串轉換為字節數組，從JSON流創建JSON數據源ByteArrayInputStream jsonDataStream = new ByteArrayInputStream(json.getBytes("utf-8"));parameters.put(JsonQueryExecuterFactory.JSON_INPUT_STREAM, jsonDataStream);if(null == jasperPrint){jasperPrint = JasperFillManager.fillReport(report, parameters);} else { //連打JasperPrint jasperPrintTemp = JasperFillManager.fillReport(report, parameters);List<JRPrintPage> pages = jasperPrintTemp.getPages();for (JRPrintPage page : pages) {jasperPrint.addPage(page);}}}switch(reportType){case PDF:JRPdfExporter pdfExporter = new JRPdfExporter();pdfExporter.setExporterInput(new SimpleExporterInput(jasperPrint));pdfExporter.setExporterOutput(new SimpleOutputStreamExporterOutput(os));pdfExporter.exportReport();break;case XLSX:Map<String, String> dateFormats = new HashMap<String, String>();dateFormats.put("EEE, MMM d, yyyy", "ddd, mmm d, yyyy");JRXlsxExporter xlsxExporter = new JRXlsxExporter();SimpleXlsxReportConfiguration configuration = new SimpleXlsxReportConfiguration();xlsxExporter.setExporterInput(new SimpleExporterInput(jasperPrint));xlsxExporter.setExporterOutput(new SimpleOutputStreamExporterOutput(os));configuration.setDetectCellType(Boolean.TRUE);configuration.setFormatPatternsMap(dateFormats);xlsxExporter.setConfiguration(configuration);xlsxExporter.exportReport();break;default:HtmlExporter htmlExporter = new HtmlExporter();htmlExporter.setExporterInput(new SimpleExporterInput(jasperPrint));htmlExporter.setExporterOutput(new SimpleHtmlExporterOutput(os));htmlExporter.exportReport();break;} if(null != os){os.flush();}} finally {if(null != os){try {os.close();} catch (Exception e) {logger.error(e);}}}} } package com.yd.wb.report.jasperReport;import java.util.HashMap; import java.util.Map;/*** @Description 打印PDF格式報表的類型的枚舉類* */ public enum ReportType {PDF(".pdf",1,"application/pdf"),XLSX(".xlsx",2,"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"),HTML(".html",4,"text/html"),JSON(".json",4,"application/json");/**后綴*/private String suffix;/**枚舉值*/private int value;/**頁面類型*/private String mimeType;private ReportType(String suffix, int value, String mimeType){this.suffix = suffix;this.value = value;this.mimeType = mimeType;}//在枚舉類型上實現fromString方法private static final Map<String, ReportType> stringToEnum = new HashMap<String, ReportType>();static {//從常量名初始化映射到enum常量for(ReportType item : values()){stringToEnum.put(item.toString(), item);}}//返回字符串的BLAH，如果字符串無效，則為nulpublic static ReportType fromString(String name){return stringToEnum.get(name);}public String getSuffix() {return suffix;}public void setSuffix(String suffix) {this.suffix = suffix;}public int getValue() {return value;}public void setValue(int value) {this.value = value;}public String getMimeType() {return mimeType;}public void setMimeType(String mimeType) {this.mimeType = mimeType;}}

3.java代碼獲取值

controller層代碼：

……………………………………………………………有關別的項目的代碼就不顯示了。 @Autowiredprivate JasperResolver jasperResolver;private static final String C_ACTION_PRINT = "printTickets";/*** 打印小票*/@RequestMapping(value="/printTickets")public CIPResponseMsg print(HttpServletRequest request,HttpServletResponse response,String serial_no,String trans_doc_id,String gross_weight,String net_weight){CIPResponseMsg msg = new CIPResponseMsg();//String trans_doc_id = request.getParameter("trans_doc_id");//Integer gross_weight = Integer.parseInt(request.getParameter("gross_weight"));Integer grossWeight = Integer.parseInt(gross_weight);try {/*1、模板一：網點車未過磅小票。網點車未過磅判斷邏輯：【毛重KG】字段為0，發車憑證300開頭*/if(grossWeight == 0 && trans_doc_id.startsWith("300")){List<Map<String, Object>> data = dataService.queryData(serial_no);jasperResolver.exportJasperReport(data, "TICKETS_NETPOINT_CARS1", ReportType.PDF, request, response);}else if(grossWeight > 0 && trans_doc_id.startsWith("300")){/*2、模板二：網點車已過磅小票。網點車車已過磅判斷邏輯：【毛重KG】字段為大于0，發車憑證300開頭*/List<Map<String, Object>> data = dataService.queryOverweight(serial_no);jasperResolver.exportJasperReport(data, "TICKETS_NETPOINT_CARS2", ReportType.PDF, request, response);}else if(trans_doc_id.startsWith("68")){/*3、模板三：網絡車小票 網絡車判斷邏輯：發車憑證68開頭。*/List<Map<String, Object>> data = dataService.query(serial_no,trans_doc_id,net_weight);jasperResolver.exportJasperReport(data, "TICKETS_NETPOINT_CARS3", ReportType.PDF, request, response);}} catch (CIPServiceException e) {CIPErrorCode error = e.getErrorCode();msg.errorCode = error.code;msg.msg = error.name;} catch (CIPDaoException e) {CIPErrorCode error = e.getErrorCode();msg.errorCode = error.code;msg.msg = error.name;} catch (CIPRuntimeException e) {CIPErrorCode error = e.getErrorCode();msg.errorCode = error.code;msg.msg = error.name;} catch (Exception e) {log.error(e);}return msg;}

service層代碼：

/*** 打印* 模板一：網點車未過磅小票。*/@Overridepublic List<Map<String, Object>> queryData(String ids) {//定義一個list，封裝結果集List<Map<String, Object>> list = new ArrayList<Map<String,Object>>();//將傳過來的id字符串轉成id數組String[] idArr = ids.split(",");for (String serial_no : idArr) {//定義一個paraMap，封裝查詢參數Map<String, Object> paraMap = new HashMap<String, Object>();paraMap.put("serial_no", serial_no);//定義一個data，封裝結果Map<String, Object> data = new HashMap<String,Object>();//查詢信息Map<String, Object> map = dataDao.queryData(paraMap);if(map != null){Set<Entry<String, Object>> entrySet = map.entrySet();for (Entry<String, Object> entry : entrySet) {data.put(entry.getKey(), entry.getValue());}}list.add(data);}return list;}

dao層代碼：

/*** 打印功能*/@Overridepublic Map<String, Object> queryData(Map<String, Object> paraMap) {Map<String, Object> map = null;String sql = "SELECT b.com_name weight_site,DATE_FORMAT(create_time, '%Y-%m-%d %H:%i:%s') create_time,serial_no,b.com_name start_site_name,concat('(', a.start_site, ')') start_site,car_id,trans_doc_id,ifnull(c.emp_name,a.operator) operator,SYSDATE() FROM wb_busi_gross_weight a "+ " LEFT JOIN wb_base_com b ON a.weight_site = b.com_bm LEFT JOIN wb_base_emp c on a.operator = c.emp_id WHERE a.serial_no = ?";//Object[] obj = {trans_doc_id};Object serial_no = paraMap.get("serial_no");try {map = jdbcTemplate.queryForMap(sql,serial_no);return map;} catch (Exception e) {log.error(e);return map;}}

sql語句，注意：查詢后的字段要求與json文件的key相對應。

SELECTb.com_name weight_site,DATE_FORMAT(create_time,'%Y-%m-%d %H:%i:%s') create_time,serial_no,b.com_name start_site_name,concat('(', a.start_site, ')') start_site,car_id,trans_doc_id,ifnull(c.emp_name, '') operator,SYSDATE() FROMwb_busi_gross_weight a LEFT JOIN wb_base_com b ON a.weight_site = b.com_bm LEFT JOIN wb_base_emp c ON a.operator = c.emp_id WHEREa.serial_no = '?'

html頁面部分代碼：



最后的效果如下圖：

當然打印機驅動是我自己安裝的，這個看公司用的什么打印機，這里我就不介紹打印機配置的步驟了。
僅此記錄下來，歡迎各位大佬指教。

總結

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