如何以3个样本打印碧玉报告，几乎没有变化？ [英] How to print a jasper report in 3 exemplar with little changes?

问题描述

我用iReport创建了一个jasper报告，我可以完美地打印出来。
我需要打印3个例子（原始示例，客户端示例，部门示例），只需更改一些，例如更改报告中的标签。

I've created a jasper report with iReport and I can print it perfectly. I need to print 3 examples of it (original example, client example, department example) with very few changes, for example changing a label in the report.

我将 PRINT_FOR 作为参数传递给iReport。

I pass PRINT_FOR as parameter to iReport.

是否有人知道如何实现这一目标？

HashMap parameters = new HashMap();
String option = "C:\\option.jasper";
JRDataSource beanDataSource = reportMapper.getDataSource();
JasperPrint jasperPrint = JasperFillManager.fillReport(option, parameters, beanDataSource);
JasperPrintManager.printPage(jasperPrint, 0, true))

推荐答案

您可以使用允许您使用和表达的文本字段，而不是使用静态文本字段确定文本输出。在这种情况下，您将检查 PRINT_FOR 参数是否等于客户端或部门，如果不使用原始值。你的表达式看起来像这样：

Instead of using a Static Text field you can use a Text Field that allows you to use and expression to determine the text output. In this case you would check to see if the PRINT_FOR parameter is equal to the client or department and if not use the original value. You expression would look something like this:

($P{PRINT_FOR}.equals("DEPARTMENT") ? "Department Label" : ($P{PRINT_FOR}.equals("CLIENT") ? "Client Label" : "Original Label"))

当 PRINT_FOR 等于 DEPARMTNENT时输出部门标签 code>，当 PRINT_FOR 等于客户端时输出客户标签 和原始标签。

Where Department Label is outputted when PRINT_FOR is equal to DEPARMTNENT, Client Label is outputted when PRINT_FOR is equal to Client, and Original Label is outputted if it is not equal to either of the above.

另外值得注意的是，在您的代码片段中，您从未在Java代码中设置 PRINT_FOR 参数的值，并且您没有使用泛型 HashMap 。它应该看起来更接近：

Also worth noting is that in the code snippet about you never set the value for the PRINT_FOR parameter in your java code and you are not using a generic HashMap. It should look something closer to:

Map<String, Object> parameters = new HashMap<String, Object>();
parameters.put("PRINT_FOR", "CLIENT");

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更新：根据您的评论，你基本上想要同时将所有3个报告导出为一个。这可以通过使用 来实现。 JRPrintServiceExporter 。基本上创建三个 JasperPrint 对象，并将它们放在一个列表中。然后使用导出器将其打印出来。类似于：

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UPDATE: Based on your comment, you basically want to do export all 3 reports as one at the same time. This can be accomplised by using the JRPrintServiceExporter. Basically create the three JasperPrint Objects, and put them in a list. Then use the exporter to print them out. Something like:

//add all three JasperPrints to the list below
List<JasperPrint> jasperPrints = new ArrayList<JasperPrint>();

...

//create an exporter
JRExporter exporter = new JRPrintServiceExporter();
//add the JasperPrints to the exporter via the JASPER_PRINT_LIST param
exporter.setParameter(JRExporterParameter.JASPER_PRINT_LIST, jasperPrints);
exporter.setParameter(JRPrintServiceExporterParameter.DISPLAY_PAGE_DIALOG, Boolean.FALSE);
exporter.setParameter(JRPrintServiceExporterParameter.DISPLAY_PRINT_DIALOG, Boolean.TRUE);
//this one makes it so that the settings choosen in the first dialog will be applied to the
//other documents in the list also
exporter.setParameter(JRPrintServiceExporterParameter.DISPLAY_PRINT_DIALOG_ONLY_ONCE, Boolean.TRUE);

exporter.exportReport();

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