jasperReports+ireport+java运用

编程小6 Java (4) 2024-04-26 13:12

Hi，大家好，我是编程小6，很荣幸遇见你，我把这些年在开发过程中遇到的问题或想法写出来，今天说一说jasperReports+ireport+java运用,希望能够帮助你!!!。

jasperReports+ireport+java运用

模板工具版本:iReport-5.6.0
参考文献：jasperReports+ireport+java运用

jasperReportsireportjava运用
- 一简单的数据展示和表格运用
- 二 char图形运用
  - 饼图运用
  - 条线图
  - 折线图
- 三子数据源
  - 创建子数据源在Report Inspector窗口选中项目右键菜单选择Add Dataset
  - 子数据源增加 Fields数据
  - 运用以饼图3D为例
- 实例环境
- 显示常用设置

一：简单的数据展示和表格运用

1.创建VO用以装载table数据

public class TableVo extends BaseBean{ private static final long serialVersionUID = 1L; //ID private String id; //名称 private String name; //类别 private String lable; //数值 private long number; //是否显示 private boolean showFlag; ....................

2.在ireport创建一个空白模板

3.根据第一步中的VO创建与VO中对应的Fields对象（对象数据类型必须一一对应）

4.设计模板
4.1 设置报表标题，和其他参数，标题和其他lable选择static Text组件；参数型数据选择Text Field组件

4.2 table部分设计
Column Header 为表头设计部分，Detail为数据明细部分，注意调整高度；可删除模板中不用的部分入Page Header,page Footer等区域

若要为table设置边框则在模板设计时选中组件点击右键选择 Padding and Border

4.3其他设置
4.3.1.解决pdf导出中文显示问题：选中所有组件

4.3.2参数值为空时显示为null解决办法

5.模板制作完成生成.jasper文件
5.1设置导出位置：工具》选项

5.2点击preview预览则能生成模板文件

6.导出测试
6.1将模板上传至工程相应目录

6.2设置模板数据，装载模板

添加表格求和统计：添加variables

使用：

二： char图形运用

在summary区域设置图形

1.饼图运用

在饼图区域点击右键》chart data 将Filter Expression值设置为$F{showFlag}控制显示项

设置描述区域项目

最后生成模板放入工程，

若showFlag全为true,则存在多组数据，饼图会显示最后一组数据；

2.条线图

Series expression用来区分曲线
Category expression是横坐标
Value expression是纵坐标

展示效果：

3.折线图

配置与条形图相似，看下效果

三：子数据源

子数据源可运用于作为各个组件的数据源

1.创建子数据源：在“Report Inspector”窗口，选中项目右键菜单选择”Add Dataset“

2.子数据源增加 Fields数据

3.运用，以饼图（3D）为例：

在饼图区域点击右键》chart data配置子数据源的数据来源

new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource($P{REPORT_PARAMETERS_MAP}.get( “chart1” ))

此处参数“chart1”与java中的传的参数一致

效果：

实例环境

maven引入jasper所需jar包

    <!-- jasperreports Start -->    
    <!-- 该包的作用完成ireport中Preview按扭功能。通过该包可以通过java来ireport生成摸班（.jrxml或.jasper)填充数据源并导出pdf,excel,html等格式文件 -->
    <dependency>
        <groupId>net.sf.jasperreports</groupId>
        <artifactId>jasperreports</artifactId>
        <version>6.0.0</version>
    </dependency>
   <dependency> 
    <!-- 生成pdf所依赖的包 -->
       <groupId>com.itextpdf</groupId>  
       <artifactId>itextpdf</artifactId>  
       <version>5.5.11</version>  
   </dependency>  
   <dependency>  
       <groupId>com.itextpdf</groupId>  
       <artifactId>itext-pdfa</artifactId>  
       <version>5.5.11</version>  
   </dependency>  
   <dependency>  
       <groupId>com.itextpdf</groupId>  
       <artifactId>itext-asian</artifactId>  
       <version>5.2.0</version>  
   </dependency>  
   <!--将.jrxml编译成.jasper.如果你不使用java编译，而使用ireport工具编译则无须导入该 包  -->
   <dependency>
     <groupId>org.codehaus.groovy</groupId>
     <artifactId>groovy-all</artifactId>
     <version>2.4.13</version>
  </dependency>     
   <!-- jasperreports End -->

数据源主要代码：


          .....................

TableVo report = new TableVo();  
          List<TableVo> reports = new ArrayList<TableVo>();    
          //装载数据  
          report.setId("1");//测试为空时，
          report.setName("测1");
          report.setNumber(6);
          report.setLable("第一类");
          report.setShowFlag(true);
          reports.add(report);

          report = new TableVo(); 
          report.setId("2");
          report.setName("测2");
          report.setNumber(2);
          report.setLable("第一类");
          report.setShowFlag(true);
          reports.add(report);

          report = new TableVo(); 
          report.setId("3");
          report.setName("测3");
          report.setNumber(3);
          report.setLable("第一类");
          report.setShowFlag(true);
          reports.add(report);

          report = new TableVo(); 
          report.setId("4");
          report.setName("测1");
          report.setNumber(1);
          report.setLable("第二类");
          report.setShowFlag(true);
          reports.add(report);

          report = new TableVo();           
          report.setId("5");
          report.setName("测2");
          report.setNumber(4);
          report.setLable("第二类");
          report.setShowFlag(true);
          reports.add(report);

          report = new TableVo();           
          report.setId("6");
          report.setName("测3");
          report.setNumber(15);
          report.setLable("第二类");
          report.setShowFlag(true);
          reports.add(report);

          //JRBeanCollectionDataSource通过构造注入collection类型的参数，这里我们用的是list结构  
          JRDataSource jrDataSource = new JRBeanCollectionDataSource(reports);
         //构建参数map 
          Map<String, Object> map=new HashMap<String, Object>();
          map.put("query", "其他参数测试"); 
          //子数据源测试
          map.put("chart1", reports);
          //指定模板文件
        ServletContext context = request.getSession().getServletContext();
        File reportFile = null;
        reportFile = new File(context.getRealPath("/pages/jasper/table_test.jasper"));
        //指定导出文件名称
        String exportFilePath = "table导出测试";
        //调用工具类
        JasperHelper.showPdf(exportFilePath, reportFile.getPath(), request, response, map,jrDataSource);
        //JasperHelper.showHtml(exportFilePath , reportFile.getPath(), request,response, map, jrDataSource);        
        //JasperHelper.export("excel", exportFilePath, reportFile, request, response, map, jrDataSource);

    ........................

报表生成工具类JasperHelper ：

package XXXXX;

import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.lang.reflect.Field;
import java.net.URLEncoder;
import java.util.Map;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sf.jasperreports.engine.JRAbstractExporter;
import net.sf.jasperreports.engine.JRDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRExporter;
import net.sf.jasperreports.engine.JRExporterParameter;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.base.JRBaseReport;
import net.sf.jasperreports.engine.export.JExcelApiExporter;
import net.sf.jasperreports.engine.export.JRHtmlExporter;
import net.sf.jasperreports.engine.export.JRHtmlExporterParameter;
import net.sf.jasperreports.engine.export.JRPdfExporter;
import net.sf.jasperreports.engine.export.JRRtfExporter;
import net.sf.jasperreports.engine.export.JRXlsExporter;
import net.sf.jasperreports.engine.export.JRXlsExporterParameter;
import net.sf.jasperreports.engine.export.JRXmlExporter;
import net.sf.jasperreports.engine.util.JRLoader;
import net.sf.jasperreports.j2ee.servlets.ImageServlet;

import org.apache.log4j.Logger;

import java.sql.Connection;

@SuppressWarnings("deprecation")
public class JasperHelper { private static Logger logger = Logger.getLogger(JasperHelper.class); public static final String PRINT_TYPE = "print"; public static final String PDF_TYPE = "pdf"; public static final String EXCEL_TYPE = "excel"; public static final String HTML_TYPE = "html"; public static final String WORD_TYPE = "word"; public static void prepareReport(JasperReport jasperReport, String type) { logger.debug("The method======= prepareReport() start......................."); /* * 如果导出的是excel，则需要去掉周围的margin */ if ("excel".equals(type)) try { Field margin = JRBaseReport.class .getDeclaredField("leftMargin"); margin.setAccessible(true); margin.setInt(jasperReport, 0); margin = JRBaseReport.class.getDeclaredField("topMargin"); margin.setAccessible(true); margin.setInt(jasperReport, 0); margin = JRBaseReport.class.getDeclaredField("bottomMargin"); margin.setAccessible(true); margin.setInt(jasperReport, 0); Field pageHeight = JRBaseReport.class .getDeclaredField("pageHeight"); pageHeight.setAccessible(true); pageHeight.setInt(jasperReport, 2147483647); } catch (Exception exception) { } } /** * 导出excel */ public static void exportExcel(JasperPrint jasperPrint, String defaultFilename, HttpServletRequest request, HttpServletResponse response) throws IOException, JRException { /* * 设置头信息 */ response.setContentType("application/vnd.ms-excel"); String defaultname = null; if (defaultFilename.trim() != null && defaultFilename != null) { defaultname = defaultFilename + ".xls"; } else { defaultname = "export.xls"; } response.setHeader("Content-Disposition", "attachment; filename=\"" + URLEncoder.encode(defaultname, "UTF-8") + "\""); ServletOutputStream ouputStream = response.getOutputStream(); JRXlsExporter exporter = new JRXlsExporter(); exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint); exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, ouputStream); exporter.setParameter( JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS, Boolean.TRUE); // 删除记录最下面的空行 exporter.setParameter(JRXlsExporterParameter.IS_ONE_PAGE_PER_SHEET, Boolean.FALSE);// 删除多余的ColumnHeader // exporter.setParameter(JRXlsExporterParameter.IS_WHITE_PAGE_BACKGROUND, Boolean.FALSE);// 显示边框 exporter.exportReport(); ouputStream.flush(); ouputStream.close(); } public static enum DocType { PDF, HTML, XLS, XML, RTF } @SuppressWarnings("rawtypes") public static JRAbstractExporter getJRExporter(DocType docType) { JRAbstractExporter exporter = null; switch (docType) { case PDF:
            exporter = new JRPdfExporter();
            break;
        case HTML:
            exporter = new JRHtmlExporter();
            break;
        case XLS:
            exporter = new JExcelApiExporter();
            break;
        case XML:
            exporter = new JRXmlExporter();
            break;
        case RTF:
            exporter = new JRRtfExporter();
            break;
        }
        return exporter;
    }
    /**
     * 导出pdf，注意此处中文问题，
     * 
     * 这里应该详细说：主要在ireport里变下就行了。看图
     * 
     * 1）在ireport的classpath中加入iTextAsian.jar 2）在ireport画jrxml时，看ireport最左边有个属性栏。
     * 
     * 下边的设置就在点字段的属性后出现。 pdf font name ：STSong-Light ，pdf encoding ：UniGB-UCS2-H
     */
    private static void exportPdf(JasperPrint jasperPrint,
            String defaultFilename, HttpServletRequest request,
            HttpServletResponse response) throws IOException, JRException {
        response.setContentType("application/pdf");
        String defaultname = null;
        if (defaultFilename.trim() != null && defaultFilename != null) {
            defaultname = defaultFilename + ".pdf";
        } else {
            defaultname = "export.pdf";
        }
        String fileName = new String(defaultname.getBytes("GBK"), "ISO8859_1");
        response.setHeader("Content-disposition", "attachment; filename="
                + fileName);
        ServletOutputStream ouputStream = response.getOutputStream();
        JasperExportManager.exportReportToPdfStream(jasperPrint, ouputStream);
        ouputStream.flush();
        ouputStream.close();
    }

    /**
     * 导出html
     */
    private static void exportHtml(JasperPrint jasperPrint,
            String defaultFilename, HttpServletRequest request,
            HttpServletResponse response) throws IOException, JRException {
        response.setContentType("text/html");
        ServletOutputStream ouputStream = response.getOutputStream();
        JRHtmlExporter exporter = new JRHtmlExporter();
        exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN,
                Boolean.FALSE);
        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
        exporter.setParameter(JRExporterParameter.CHARACTER_ENCODING, "UTF-8");
        exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, ouputStream);
        //设置图片文件存放路径，此路径为服务器上的绝对路径
        String imageDIR =request.getSession().getServletContext().getRealPath("/");
        exporter.setParameter(JRHtmlExporterParameter.IMAGES_DIR_NAME, imageDIR);

        //设置图片请求URI
        String imageURI = request.getContextPath() + "/";
        exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI, imageURI);

        //设置导出图片到图片存放路径
        exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, Boolean.TRUE);
        exporter.setParameter(JRHtmlExporterParameter.IS_OUTPUT_IMAGES_TO_DIR, Boolean.TRUE); 

        exporter.exportReport();

        ouputStream.flush();
        ouputStream.close();
    }

    /**
     * 导出word
     */
    @SuppressWarnings("rawtypes")
    private static void exportWord(JasperPrint jasperPrint,
            String defaultFilename, HttpServletRequest request,
            HttpServletResponse response) throws JRException, IOException {
        response.setContentType("application/msword;charset=utf-8");
        String defaultname = null;
        if (defaultFilename.trim() != null && defaultFilename != null) {
            defaultname = defaultFilename + ".doc";
        } else {
            defaultname = "export.doc";
        }
        String fileName = new String(defaultname.getBytes("GBK"), "utf-8");
        response.setHeader("Content-disposition", "attachment; filename="
                + fileName);
        JRExporter exporter = new JRRtfExporter();
        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
        exporter.setParameter(JRExporterParameter.OUTPUT_STREAM,
                response.getOutputStream());

        exporter.exportReport();
    }

    /**
     * 按照类型导出不同格式文件
     * 
     * @param datas
     *            数据
     * @param type
     *            文件类型
     * @param is
     *            jasper文件的来源
     * @param request
     * @param response
     * @param defaultFilename默认的导出文件的名称
     */
    public static void export(String type, String defaultFilename, File is,
            HttpServletRequest request, HttpServletResponse response,
            Map parameters, Connection conn) {
        try {
            JasperReport jasperReport = (JasperReport) JRLoader.loadObject(is);
            prepareReport(jasperReport, type);

            JasperPrint jasperPrint = JasperFillManager.fillReport(
                    jasperReport, parameters, conn);

            if (EXCEL_TYPE.equals(type)) {
                exportExcel(jasperPrint, defaultFilename, request, response);
            } else if (PDF_TYPE.equals(type)) {
                exportPdf(jasperPrint, defaultFilename, request, response);
            } else if (HTML_TYPE.equals(type)) {
                exportHtml(jasperPrint, defaultFilename, request, response);
            } else if (WORD_TYPE.equals(type)) {
                exportWord(jasperPrint, defaultFilename, request, response);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    public static void export(String type, String defaultFilename, File is,
            HttpServletRequest request, HttpServletResponse response,
            Map parameters, JRDataSource conn) {
        try {
            JasperReport jasperReport = (JasperReport) JRLoader.loadObject(is);
            prepareReport(jasperReport, type);

            JasperPrint jasperPrint = JasperFillManager.fillReport(
                    jasperReport, parameters, conn);

            if (EXCEL_TYPE.equals(type)) {
                exportExcel(jasperPrint, defaultFilename, request, response);
            } else if (PDF_TYPE.equals(type)) {
                exportPdf(jasperPrint, defaultFilename, request, response);
            } else if (HTML_TYPE.equals(type)) {
                exportHtml(jasperPrint, defaultFilename, request, response);
            } else if (WORD_TYPE.equals(type)) {
                exportWord(jasperPrint, defaultFilename, request, response);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    /**
     * 输出html静态页面，必须注入request和response
     * 
     * @param jasperPath
     * @param params
     * @param sourceList
     * @param imageUrl
     *            报表文件使用的图片路径，比如 ../servlets/image?image=
     * @throws JRException
     * @throws IOException
     * @throws ServletException
     */
    public static void showHtml(String defaultFilename, String reportfile,
            HttpServletRequest request, HttpServletResponse response, Map parameters,
            JRDataSource conn) throws JRException, IOException {


        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        response.setContentType("text/html");

        JRAbstractExporter exporter = getJRExporter(DocType.HTML);

        JasperPrint jasperPrint = JasperFillManager.fillReport(reportfile,
                parameters, conn);
        request.getSession().setAttribute(
                ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE,
                jasperPrint);

        PrintWriter out = response.getWriter();

        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
        exporter.setParameter(JRExporterParameter.OUTPUT_WRITER, out);
        exporter.setParameter(
        JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN,
        Boolean.FALSE);

        //设置图片文件存放路径，此路径为服务器上的绝对路径
        String imageDIR =request.getSession().getServletContext().getRealPath("/");
        exporter.setParameter(JRHtmlExporterParameter.IMAGES_DIR_NAME, imageDIR);

        //设置图片请求URI
        String imageURI = request.getContextPath() + "/";
        exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI, imageURI);

        //设置导出图片到图片存放路径
        exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, Boolean.TRUE);
        exporter.setParameter(JRHtmlExporterParameter.IS_OUTPUT_IMAGES_TO_DIR, Boolean.TRUE); 
        exporter.exportReport();

        out.flush();

    }
    public static void showHtml(String defaultFilename, String reportfile,
            HttpServletRequest request, HttpServletResponse response, Map parameters,
            Connection conn) throws JRException, IOException {


        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        response.setContentType("text/html");

        JRAbstractExporter exporter = getJRExporter(DocType.HTML);

        JasperPrint jasperPrint = JasperFillManager.fillReport(reportfile,
                parameters, conn);
        request.getSession().setAttribute(
                ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE,
                jasperPrint);

        PrintWriter out = response.getWriter();

        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
        exporter.setParameter(JRExporterParameter.OUTPUT_WRITER, out);
        exporter.setParameter(
        JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN,
        Boolean.FALSE);
        //设置图片文件存放路径，此路径为服务器上的绝对路径
        String imageDIR =request.getSession().getServletContext().getRealPath("/");
        exporter.setParameter(JRHtmlExporterParameter.IMAGES_DIR_NAME, imageDIR);

        //设置图片请求URI
        String imageURI = request.getContextPath() + "/";
        exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI, imageURI);

        //设置导出图片到图片存放路径
        exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, Boolean.TRUE);
        exporter.setParameter(JRHtmlExporterParameter.IS_OUTPUT_IMAGES_TO_DIR, Boolean.TRUE); 
        exporter.exportReport();
        out.flush();

    }
    @SuppressWarnings({ "rawtypes", "unchecked" })
    public static void showPdf(String defaultFilename, String reportfile,
            HttpServletRequest request, HttpServletResponse response, Map parameters,
            JRDataSource conn) throws JRException, IOException {


        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        response.setContentType("text/html");
        response.setContentType("application/pdf");

        JRAbstractExporter exporter = getJRExporter(DocType.PDF);

        JasperPrint jasperPrint = JasperFillManager.fillReport(reportfile,
                parameters, conn);
        request.getSession().setAttribute(
                ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE,
                jasperPrint);

        OutputStream out = response.getOutputStream();

        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
        exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, out);
        exporter.exportReport();
        out.flush();

    }
    @SuppressWarnings({ "rawtypes", "unchecked" })
    public static void showPdf(String defaultFilename, String reportfile,
            HttpServletRequest request, HttpServletResponse response, Map parameters,
            Connection conn) throws JRException, IOException {


        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        response.setContentType("text/html");
        response.setContentType("application/pdf");

        JRAbstractExporter exporter = getJRExporter(DocType.PDF);

        JasperPrint jasperPrint = JasperFillManager.fillReport(reportfile,
                parameters, conn);
        request.getSession().setAttribute(
                ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE,
                jasperPrint);

        OutputStream out = response.getOutputStream();

        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
        exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, out);
        exporter.exportReport();
        out.flush();

    }

}

显示常用设置

1.内容换行

2.区块区域之间导出存在空白，或空白分页，禁用分页

3.让内容浮动显示，自动填充无数据的空白区域

4.饼状图百分比显示小数为控制
方案一：
百分比由自己在javaben中计算由String类型表示例如“12.53%”；当作其他结果参数一样传递在饼图设置里赋值到label expression：

方案二：
首先建立数据源求和

赋值到label expression：

String.valueOf(new BigDecimal($F{number}.doubleValue()/$V{variable1}.doubleValue()*100).setScale(2,BigDecimal.ROUND_HALF_UP))+'%'

今天的分享到此就结束了，感谢您的阅读，如果确实帮到您，您可以动动手指转发给其他人。

Java编程语言简述

java调用dll 动态链接库(dll)初始化例程失败._线程“main”中的异常java.lang.UnsatisfiedLinkError：动态链接库(DLL)初始化例程失败...

发表回复取消回复

请先登录账户再评论哦

jasperReports+ireport+java运用