JasperReports结合iReport制作报表-使用JasperReports生成报表

《JasperReports结合iReport制作报表-使用iReport设计报表》

已经在http://www.naxsu.com/jasperreports-jie-he-ireport-zhi-zuo-bao-biao-shi-yong-ireport-she-ji-bao-biao/写得很清楚了，下面就接着说

下载JasperReports

JasperReports主页：http://jasperforge.org/projects/jasperreports

下载要注册，真麻烦

现在的最新版本是4.6.0，下载地址是：http://sourceforge.net/projects/jasperreports/files/jasperreports/JasperReports%204.6.0/

在这里我下载的是jasperreports-4.6.0-project.zip

 

环境配置

需要的jar包，这是我测试需求哪个加哪个，我生成PDF和HTML报表用到以下已经足够了。

commons-beanutils-1.8.0.jar

commons-collections-2.1.1.jar

commons-digester-2.1.jar

commons-logging-1.1.1.jar

groovy-all-1.7.5.jar

iText-2.1.7.jar

iTextAsian.jar

jasperreports-4.6.0.jar

mysql-connector-java-5.1.7-bin.jar

 

测试程序

在这里我们就建一个简单的java项目来测试一下。

 

生成报表主要分为三个步骤：

<!--[if !supportLists]-->1.       <!--[endif]-->编译报表

把iReport设计好的报表report1.jrxml编译成report1.jasper

<!--[if !supportLists]-->2.       <!--[endif]-->填充报表

连接数据库，把1编译好的report1.jasper填充好，生成report1.jrprint

<!--[if !supportLists]-->3.       <!--[endif]-->导出报表

也就是把2.填充好的报表按照各种格式导出来。

 

代码比较简单，下面直接看代码：

package com.naxsu.report;

import java.io.File;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.SQLException;

import net.sf.jasperreports.engine.JRException;

import net.sf.jasperreports.engine.JRExporterParameter;

import net.sf.jasperreports.engine.JasperCompileManager;

import net.sf.jasperreports.engine.JasperFillManager;

import net.sf.jasperreports.engine.JasperPrint;

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.util.JRLoader;

/**

 * JasperReports生成报表简单应用

 */

public class ReportTest {

    /**

     * 编译报表

     */

    public static void compiler(String sourceFileName, String destFileName) {

       try {

           JasperCompileManager.compileReportToFile(sourceFileName,

                  destFileName);

       } catch (JRException e) {

           e.printStackTrace();

       }

    }

 

    /**

     * 填充报表

     */

    public static void fill(String sourceFileName, String destFileName) {

       Connection conn = null;

       try {

           Class.forName("com.mysql.jdbc.Driver");

           conn = DriverManager.getConnection(

                  "jdbc:mysql://localhost:3306/report", "root", "123");

           JasperFillManager.fillReportToFile(sourceFileName, destFileName,null, conn);

       } catch (JRException e) {

           e.printStackTrace();

       } catch (ClassNotFoundException e) {

           e.printStackTrace();

       } catch (SQLException e) {

           e.printStackTrace();

       }finally{

           if(conn != null) {

              try {

                  conn.close();

              } catch (SQLException e) {

                  e.printStackTrace();

              }

           }

       }

    }

 

    /**

     * 导出HTML格式报表

     */

    public static void exportToHTML(String sourceFileName, String destFileName) {

       try {

           JasperPrint jp = (JasperPrint) JRLoader.loadObject(new File(

                  sourceFileName));

           JRHtmlExporter export = new JRHtmlExporter();

           export.setParameter(JRExporterParameter.JASPER_PRINT, jp);

           export.setParameter(JRExporterParameter.OUTPUT_FILE_NAME,

                  destFileName);

           export.setParameter(

                  JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN,

                  Boolean.FALSE);

           export.exportReport();

       } catch (JRException e) {

           e.printStackTrace();

       }

    }

 

    /**

     * 导出PDF格式报表

     */

    public static void exportToPDF(String sourceFileName, String destFileName) {

       try {

           JasperPrint jp = (JasperPrint) JRLoader.loadObject(new File(

                  sourceFileName));

           JRPdfExporter export = new JRPdfExporter();

           export.setParameter(JRExporterParameter.JASPER_PRINT, jp);

           export.setParameter(JRExporterParameter.OUTPUT_FILE_NAME,

                  destFileName);

           export.setParameter(

                  JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN,

                  Boolean.FALSE);

           export.exportReport();

       } catch (JRException e) {

           e.printStackTrace();

       }

    }

 

    public static void main(String[] args) {

       String jrxmlName = "E:\\JasperReports_iReport\\report1.jrxml";

       String jasperFileName = "E:\\JasperReports_iReport\\report1.jasper";

       String jrprintFileName = "E:\\JasperReports_iReport\\report1.jrprint";

       String htmlFileName = "E:\\JasperReports_iReport\\report1.pdf";

       ReportTest.compiler(jrxmlName, jasperFileName);

       ReportTest.fill(jasperFileName, jrprintFileName);

       ReportTest.exportToPDF(jrprintFileName, htmlFileName);

    }

}

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