JasperReports結合iReport制作報表-使用JasperReports生成報表

《JasperReports結合iReport制作報表-使用iReport設計報表》      

已經在http://www.naxsu.com/jasperreports-jie-he-ireport-zhi-zuo-bao-biao-shi-yong-ireport-she-ji-bao-biao/寫得很清楚了，下面就接着說      

下載下傳JasperReports

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

下載下傳要注冊，真麻煩

現在的最新版本是4.6.0，下載下傳位址是：http://sourceforge.net/projects/jasperreports/files/jasperreports/JasperReports%204.6.0/

在這裡我下載下傳的是jasperreports-4.6.0-project.zip

環境配置

需要的jar包，這是我測試需求哪個加哪個，我生成PDF和HTML報表用到以下已經足夠了。

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

測試程式

在這裡我們就建一個簡單的java項目來測試一下。

生成報表主要分為三個步驟：

<!--[if !supportLists]-->1.       <!--[endif]-->編譯報表

把iReport設計好的報表report1.jrxml編譯成report1.jasper

<!--[if !supportLists]-->2.       <!--[endif]-->填充報表

連接配接資料庫，把1編譯好的report1.jasper填充好，生成report1.jrprint

<!--[if !supportLists]-->3.       <!--[endif]-->導出報表

也就是把2.填充好的報表按照各種格式導出來。

代碼比較簡單，下面直接看代碼：

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; public class ReportTest {     public static void compiler(String sourceFileName, String destFileName) {        try {            JasperCompileManager.compileReportToFile(sourceFileName,                   destFileName);        } catch (JRException e) {            e.printStackTrace();        }     }     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();               }            }        }     }     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();        }     }     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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