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POJasperReports & Struts2: custom chart themes
 

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  1. POJasperReports & Struts2: custom chart themes
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    <p>I'm trying to integrate <em>JasperReports</em> in a web application that runs on <em>Struts2</em>.<br/> I'm using the <em>struts2-jasperreports-plugin (2.3.15)</em>.</p> <p>To do so I added in my <em>struts2.xml</em> the the mapping for the action method and to the image servlet, and I wrote an action that simply takes in input a <em>jrxml</em> source file and compiles the report. <br/> </p> <p>Here is the configuration lines i added in <em>struts2.xml</em></p> <pre><code>&lt;package name="jasperreport" namespace="/jasperreports" extends="jasperreports-default"&gt; &lt;action name="getJasperReport" class="....JasperReportAction" method="getJasperReport"&gt; &lt;result name="success" type="jasper" &gt; &lt;param name="location"&gt;jasper/tmp/${outFile}&lt;/param&gt; &lt;param name="format"&gt;${format}&lt;/param&gt; &lt;param name="imageServletUrl"&gt;/servlets/image?image=&lt;/param&gt; &lt;/result&gt; &lt;/action&gt; &lt;/package&gt; &lt;constant name="struts.action.excludePattern" value="/servlets/image*" /&gt; </code></pre> <p>And added in my <em>web.xml</em> the mapping for the servlet image:</p> <pre><code>&lt;servlet&gt; &lt;servlet-name&gt;ImageServlet&lt;/servlet-name&gt; &lt;servlet-class&gt;net.sf.jasperreports.j2ee.servlets.ImageServlet&lt;/servlet-class&gt; &lt;/servlet&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;ImageServlet&lt;/servlet-name&gt; &lt;url-pattern&gt;/servlets/image&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; </code></pre> <p>The action method is reported here:</p> <pre><code>public class JasperReportAction extends ActionSupport { private java.sql.Connection sqlConnection; private String sourceFile; private String outFile; private String format; private String reportName; private String outputName; public JasperReportAction() { //initialize the connection... } //getters and setters.. public String getJasperReport() { try { String reportPath = "jasper/" + reportName; JasperCompileManager.compileReportToFile(reportPath,"jasper/tmp/" + outputName + ".jasper"); } catch(Exception e) { logger.log("getJasperReport", e); return ERROR; } return SUCCESS; } } </code></pre> <p>And I call the action with a JQuery load:</p> <pre><code>$("#jasperReport").load("url/getJasperReport.action", { "sourceFile": "source.jrxml", "outFile" : "outFile", "format" : "HTML", }); </code></pre> <p>I'm editing my reports with <em>iReports 5.1.0</em> and if I create a report where the charts uses one of the default themes, the report is correctly compiled and it is displayed in my web application.<br/><br> I tried to use a custom template, I've created it and exported the jar using <em>iReport</em> and finally put the theme jar under my WEB-INF/lib folder. </p> <p>When I try to retrieve the report from my application the <em>Struts</em> dispatcher gives me the following error:</p> <blockquote> <p>org.apache.struts2.dispatcher.Dispatcher - Exception occurred during processing request: null java.lang.reflect.InvocationTargetException<br> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) .......</p> </blockquote> <p>I get this error even if i try to open a report that doesn't use the custom theme. Unless I remove the theme jar.<br/><br> It seems that no <em>JasperReports</em> Exception is thrown during the report compilation, since the logger in the catch block doesn't log anything, But the <em>jasper</em> file isn't created.</p> <p>I've put in my WEB-INF/lib the <em>jasperreports-chart-themes</em> jar, I've tried versions 4.0.0 and 5.1.0 but I always get the same error.</p> <p>When I show the report preview in <em>iReport</em> everything works fine.</p> <p>Can someone tell me if I am missing something to do before using custom chart themes?</p>
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    1. COCan you post relevant parts of code and configuration ? (action, web.xml, struts.xml)
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      1. USAndrea Ligios
    2. COI edited the post and added some info
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    3. COI don't know why the exception is raising, but the runtime compilation is heavily discouraged [in the documentation](http://struts.apache.org/release/2.3.x/docs/jasperreports-tutorial.html): ***"Again, don't use this in production code. You should of course either provide compiled templates, or do some sort of checking to avoid compiling the template on every request."*** My 2 cents: try to adjust your code to make it similar to the one in the tutorial, and once it works, start customizing, if necessary.
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      1. POJasperReports & Struts2: custom chart themes
      1. USAndrea Ligios
 

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