Struts2 jasperreports - 传递导出参数 [英] Struts2 jasperreports - passing export parameters

问题描述

我正在使用struts2 jasperreports插件，效果很好。问题是我想传递exportParameters，我不知道如何通过插件来做到这一点。

I'm using the struts2 jasperreports plugin and it works well. The problem is that I want to pass exportParameters and I'm not sure how to do that through the plugin.

推荐答案

哪个版本你使用的Struts2使用 2.1.2 + 它提供的功能提供 exportParameters

Which version of Struts2 you are using starting with 2.1.2+ it provides the feature to provides exportParameters

您需要在动作类中的struts配置文件中添加以下条目或类似条目

All you need to add following entry or similar entry in your struts config file inside your action class

<action name="myJasperTest" class="com.acme.test.action.JasperAction">
    <result name="success" type="jasper">
      <param name="location">foo.jasper</param>
      <param name="dataSource">mySource</param>
      <param name="exportParameters ">exportParameters </param>
    </result>
</action>

exportParameters - 用于从中检索JR导出器参数的映射的OGNL表达式价值堆栈。导出参数用于自定义JR导出。例如，PDF导出可能启用加密并将用户密码设置为报表创建者已知的字符串。
你需要在你的动作类中为你的导出参数定义一个地图，并提供它的getter / setter，而不是如上所述使用它的引用。

exportParameters - OGNL expression used to retrieve a map of JR exporter parameters from the value stack. The export parameters are used to customize the JR export. For example, a PDF export might enable encryption and set the user password to a string known to the report creator. All you need to define a map for your export parameters in your action class and provides its getter/setter than use its reference as described.

详情请参阅此网址

jasperreports

**Update**

以下是他们在结果类型中的表现方式

Here is how they have done it in result type

 exporter = new JRXlsExporter();
Map exportParams = (Map) stack.findValue(exportParameters);
             if (exportParams != null) {
                 LOG.debug("Found export parameters; adding to exporter parameters...");
                 exporter.getParameters().putAll(exportParams);
            }

所以他们做的是他们试图找出 map 在值堆栈中，名称为 exportParameters 如果他们发现它们正在添加它。所以必须在你的动作类中执行此操作

so what they did is they tried to find out a map in value stack with name exportParameters if they find it they are adding it.So have to do this in your action class

Map<String,String> exportParameters= //init your map here

在此地图中设置您的属性并为其创建一个getter和setter此属性

set your properties in this map and create a getter and setter for this property

getExportParameters()
setExportParameters()

并在你的struts配置文件中声明地图如下

and in your struts config file declare the map as follows

<param name="exportParameters ">exportParameters </param>

休息框架将照顾
希望这会帮助你

rest framework will take care Hope this will help you

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