我正在研究Spring MongoDB Jasper集成示例.我有Spring Mysql Jasper示例,它工作正常.我希望转换为mongodb的相同程序.
源代码:https://github.com/test512/spring-mvc-mongo-jasper.git
@Note:我关注了http://jasperreports.sourceforge.net/api/index.html,但我没有看到要下载的jar文件.它不存在于maven回购中？
LoadJasperReport.java
@Controller
public class LoadJasperReport {
private static final Logger LOGGER = LoggerFactory.getLogger(LoadJasperReport.class);
@ModelAttribute("jasperRptFormats")
public ArrayList getJasperRptFormats() {
ArrayList jasperRptFormats = new ArrayList();
jasperRptFormats.add("Html");
jasperRptFormats.add("PDF");
return jasperRptFormats;
}
@RequestMapping(value = "/loadJasper", method = RequestMethod.GET)
public String loadSurveyPg(@ModelAttribute("jasperInputForm") JasperInputForm jasperInputForm, Model model) {
model.addAttribute("JasperInputForm", jasperInputForm);
return "loadJasper";
}
@RequestMapping(value = "/generateReport", method = RequestMethod.POST)
public String generateReport(@Valid @ModelAttribute("jasperInputForm") JasperInputForm jasperInputForm,
BindingResult result, Model model, HttpServletRequest request, HttpServletResponse response)
throws ParseException {
LOGGER.debug("~~~ Generate Report ~~~");
if (result.hasErrors()) {
LOGGER.error("validation error occured in jasper input form");
return "loadJasper";
}
String reportFileName = "JREmp1";
Connection conn = null;
try {
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e) {
LOGGER.error("Please include Classpath Where your MySQL Driver is located");
e.printStackTrace();
}
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "root");
if (conn != null)
LOGGER.debug("Database Connected");
else
LOGGER.debug(" connection Failed ");
String rptFormat = jasperInputForm.getRptFmt();
String noy = jasperInputForm.getNoofYears();
LOGGER.debug("rpt format " + rptFormat + ", no of years " + noy);
HashMap hmParams = new HashMap();
hmParams.put("noy", new Integer(noy));
hmParams.put("Title", "Employees working more than " + noy + " Years");
JasperReport jasperReport = getCompiledFile(reportFileName, request);
if (rptFormat.equalsIgnoreCase("html")) {
JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, hmParams, conn);
// For HTML report
generateReportHtml(jasperPrint, request, response);
} else if (rptFormat.equalsIgnoreCase("pdf")) {
// For PDF report
generateReportPDF(response, hmParams, jasperReport, conn);
}
} catch (Exception sqlExp) {
LOGGER.error("Exception::" + sqlExp.toString());
} finally {
try {
if (conn != null) {
conn.close();
conn = null;
}
} catch (SQLException expSQL) {
LOGGER.error("SQLExp::CLOSING::" + expSQL.toString());
}
}
return null;
}
private JasperReport getCompiledFile(String fileName, HttpServletRequest request) throws JRException {
LOGGER.debug("path " + request.getSession().getServletContext().getRealPath("/jasper/" + fileName + ".jasper"));
File reportFile = new File(
request.getSession().getServletContext().getRealPath("/jasper/" + fileName + ".jasper"));
// If compiled file is not found, then compile XML template
if (!reportFile.exists()) {
JasperCompileManager.compileReportToFile(
request.getSession().getServletContext().getRealPath("/jasper/" + fileName + ".jrxml"),
request.getSession().getServletContext().getRealPath("/jasper/" + fileName + ".jasper"));
}
JasperReport jasperReport = (JasperReport) JRLoader.loadObjectFromFile(reportFile.getPath());
return jasperReport;
}
private void generateReportHtml(JasperPrint jasperPrint, HttpServletRequest req, HttpServletResponse resp)
throws IOException, JRException {
LOGGER.debug("~~~ Generate HTML Report ~~~");
HtmlExporter exporter = new HtmlExporter();
List jasperPrintList = new ArrayList();
jasperPrintList.add(jasperPrint);
exporter.setExporterInput(SimpleExporterInput.getInstance(jasperPrintList));
exporter.setExporterOutput(new SimpleHtmlExporterOutput(resp.getWriter()));
SimpleHtmlReportConfiguration configuration = new SimpleHtmlReportConfiguration();
exporter.setConfiguration(configuration);
exporter.exportReport();
}
private void generateReportPDF(HttpServletResponse resp, Map parameters, JasperReport jasperReport,
Connection conn) throws JRException, NamingException, SQLException, IOException {
LOGGER.debug("~~~ Generate PDF Report ~~~");
byte[] bytes = null;
bytes = JasperRunManager.runReportToPdf(jasperReport, parameters, conn);
resp.reset();
resp.resetBuffer();
resp.setContentType("application/pdf");
resp.setContentLength(bytes.length);
ServletOutputStream ouputStream = resp.getOutputStream();
ouputStream.write(bytes, 0, bytes.length);
ouputStream.flush();
ouputStream.close();
}
}
这个程序我试图转换为MongoDB如下,但我不知道如何获得Connection对象？有没有办法从mongodb或任何其他方式获取连接对象为mongodb jasper编写代码？
现在我看到了问题:
JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, hmParams, conn);
我改变了下面的代码,但它不起作用.请指导.
package net.javaonline.spring.jasper.controller;
import java.io.File;
import java.io.IOException;
import java.sql.Connection;
import java.sql.SQLException;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.naming.NamingException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.jaspersoft.mongodb.MongoDbDataSource;
import com.jaspersoft.mongodb.connection.MongoDbConnection;
import net.javaonline.spring.jasper.form.JasperInputForm;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.JasperRunManager;
import net.sf.jasperreports.engine.export.HtmlExporter;
import net.sf.jasperreports.engine.util.JRLoader;
import net.sf.jasperreports.export.SimpleExporterInput;
import net.sf.jasperreports.export.SimpleHtmlExporterOutput;
import net.sf.jasperreports.export.SimpleHtmlReportConfiguration;
@Controller
public class LoadJasperReport {
private static final Logger LOGGER = LoggerFactory.getLogger(LoadJasperReport.class);
@ModelAttribute("jasperRptFormats")
public ArrayList getJasperRptFormats(){
ArrayList jasperRptFormats = new ArrayList();
jasperRptFormats.add("Html");
jasperRptFormats.add("PDF");
return jasperRptFormats;
}
@RequestMapping(value = "/loadJasper", method = RequestMethod.GET)
public String loadSurveyPg(
@ModelAttribute("jasperInputForm") JasperInputForm jasperInputForm,
Model model) {
model.addAttribute("JasperInputForm", jasperInputForm);
return "loadJasper";
}
@RequestMapping(value = "/generateReport", method = RequestMethod.POST)
public String generateReport(
@Valid @ModelAttribute("jasperInputForm") JasperInputForm jasperInputForm,
BindingResult result,Model model,
HttpServletRequest request, HttpServletResponse response) throws ParseException {
LOGGER.debug("~~~ Generate Report ~~~");
if (result.hasErrors()) {
LOGGER.error("validation error occured in jasper input form");
return "loadJasper";
}
String reportFileName = "JREmp1";
MongoDbConnection conn = null;
try {
try {
conn = new MongoDbConnection("mongodb://localhost:27017/mydb", null, null);
} catch (JRException e) {
System.out.println("JREException : "+e.getMessage());
}
Map parameters = new HashMap();
parameters.put(MongoDbDataSource.QUERY_LANGUAGE, conn);
String rptFormat = jasperInputForm.getRptFmt();
String noy = jasperInputForm.getNoofYears();
LOGGER.debug("rpt format " + rptFormat+", no of years " + noy);
HashMap hmParams=new HashMap();
hmParams.put("noy", new Integer(noy));
hmParams.put("Title", "Employees working more than "+ noy + " Years");
JasperReport jasperReport = getCompiledFile(reportFileName, request);
if (rptFormat.equalsIgnoreCase("html") ) {
JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, hmParams, conn);
// For HTML report
generateReportHtml(jasperPrint, request, response);
}
else if(rptFormat.equalsIgnoreCase("pdf")){
// For PDF report
generateReportPDF(response, hmParams, jasperReport, conn);
}
} catch (JRException | IOException | NamingException | SQLException e) {
System.out.println(e.getMessage());
} finally {
if (conn != null) {
conn.close();
conn = null;
}
}
return null;
}
private JasperReport getCompiledFile(String fileName, HttpServletRequest request) throws JRException {
LOGGER.debug("path " + request.getSession().getServletContext().getRealPath("/jasper/" + fileName + ".jasper"));
File reportFile = new File( request.getSession().getServletContext().getRealPath("/jasper/" + fileName + ".jasper"));
// If compiled file is not found, then compile XML template
if (!reportFile.exists()) {
JasperCompileManager.compileReportToFile(request.getSession().getServletContext().getRealPath("/jasper/" + fileName + ".jrxml"),request.getSession().getServletContext().getRealPath("/jasper/" + fileName + ".jasper"));
}
JasperReport jasperReport = (JasperReport) JRLoader.loadObjectFromFile(reportFile.getPath());
return jasperReport;
}
private void generateReportHtml( JasperPrint jasperPrint, HttpServletRequest req, HttpServletResponse resp)
throws IOException, JRException {
LOGGER.debug("~~~ Generate HTML Report ~~~");
HtmlExporter exporter=new HtmlExporter();
List jasperPrintList = new ArrayList();
jasperPrintList.add(jasperPrint);
exporter.setExporterInput(SimpleExporterInput.getInstance(jasperPrintList));
exporter.setExporterOutput( new SimpleHtmlExporterOutput(resp.getWriter()));
SimpleHtmlReportConfiguration configuration =new SimpleHtmlReportConfiguration();
exporter.setConfiguration(configuration);
exporter.exportReport();
}
private void generateReportPDF (HttpServletResponse resp, Map parameters,
JasperReport jasperReport, Connection conn)throws JRException, NamingException, SQLException, IOException {
LOGGER.debug("~~~ Generate PDF Report ~~~");
byte[] bytes = null;
bytes = JasperRunManager.runReportToPdf(jasperReport, parameters, conn);
resp.reset();
resp.resetBuffer();
resp.setContentType("application/pdf");
resp.setContentLength(bytes.length);
ServletOutputStream ouputStream = resp.getOutputStream();
ouputStream.write(bytes, 0, bytes.length);
ouputStream.flush();
ouputStream.close();
}
}
JREmp1.jrxml
<band splitType="Stretch"> <staticText> <reportElement x="0" y="0" uuid="52aef86d-1b56-49fa-bb20-e4b0ad93e554"/> <textElement textAlignment="Center"> <font size="15"/> </textElement> <text><![CDATA[OMS Order Report]]></text> </staticText> </band>
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