Jasper报告Pdf导出在Eclipse中，但是从Jar文件很慢 [英] Jasper Report Pdf Export in Eclipse ok but from Jar file very slow

问题描述

我在Eclipse中使用Jasper Reports插件生成一个Pdf报告。在Eclipse中的项目中，PDF创建时间约为5秒。当我将项目导出到可执行的Jar文件中时，库中包装有Jar，PDF创建时间可达3-4分钟。任何想法为什么会发生？提前致谢。如果有任何其他细节应该提供，请让我知道。 （查询返回70行）

  try {
 Connection connection = null; 
 connection = dbConnect.dbConnector（）; 
 String year comboBox_1.getSelectedItem（）。toString（）; 
 String items = textField_1.getText（）。toString（）; 
 String amount = textField_2.getText（）。toString（）; 
 Map parametersMap = new HashMap（）; 
 parametersMap.put（year，year）; 
 parametersMap.put（items，items）; 
 parametersMap.put（amount，amount）; 
 String reportPath =C：\\Users\\Panagiotis\\workspace\\OceanBlue\\SalesReportYear.jrxml; 
 JasperReport jr = JasperCompileManager.compileReport（reportPath）; 
 JasperPrint jp = JasperFillManager.fillReport（jr，parametersMap，connection）; 
 JasperExportManager.exportReportToPdfFile（jp，C：\\\\\Panagiotis\\Desktop\\SaleReport+ textField_3.getText（）+。pdf）; 
 connection.close（）; 
} 
 catch（Exception ex）{
 System.out.println（ex.getMessage（））; 
} 
} 
  

解决方案

解决方案.........在wero上面提到JDK之后，我检查了Windows，Eclipse和Jasper Reports Studio的JDK。对于Jasperreports来说是不同的。更正了它，现在pdf的出口时间平均为5秒。就那么简单。谢谢wero！

I am generating a Pdf report using Jasper Reports plugin in Eclipse. While working on the project in Eclipse the PDF creation time is approximately 5 seconds. When I export the project into an executable Jar file with the libraries packaged in the Jar the PDF creation time goes up to almost 3-4 minutes. Any ideas why that happens? Thanks in advance. If any other details should be provided please let me know. (Query returns 70 rows)

try{
                        Connection connection=null;
                        connection=dbConnect.dbConnector();
                        String year comboBox_1.getSelectedItem().toString();                               
                        String items = textField_1.getText().toString();
                        String amount = textField_2.getText().toString();
                        Map parametersMap = new HashMap();      
                        parametersMap.put("year",year);
                        parametersMap.put("items",items);
                        parametersMap.put("amount",amount);
                        String reportPath = "C:\\Users\\Panagiotis\\workspace\\OceanBlue\\SalesReportYear.jrxml";
                        JasperReport jr = JasperCompileManager.compileReport(reportPath);
                        JasperPrint jp = JasperFillManager.fillReport(jr,parametersMap,connection);
                        JasperExportManager.exportReportToPdfFile(jp, "C:\\Users\\Panagiotis\\Desktop\\SaleReport"+textField_3.getText()+".pdf");
                        connection.close();
                        }
                        catch(Exception ex){    
                        System.out.println(ex.getMessage());
                        }
                }

解决方案

So the solution.........after wero mentioning JDK above I checked the JDK of Windows, Eclipse and Jasper Reports Studio. It was different for the Jasperreports. Corrected it and now the exporting time of the pdf is 5 secs average. Simple as that. Thanks wero!

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