使用 jasper 报告配置 struts2

Question

我正在尝试使用 jasper 配置 Struts 2。我已经用一个小例子尝试了这个，但是我得到了一个错误，我在花了两天时间后无法恢复它。我已经提到了错误日志和我使用过的其他代码示例。

Unable to load configuration. - [unknown location]
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:70)
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:429)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:471)
at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:74)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:273)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:254)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:372)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:98)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4562)
at org.apache.catalina.core.StandardContext.call(StandardContext.java:5240)
at org.apache.catalina.core.StandardContext.call(StandardContext.java:5235)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
    Caused by: Parent package is not defined: jasperreports-default - [unknown location]
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.buildPackageContext(XmlConfigurationProvider.java:660)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:508)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:290)
at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:112)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:239)
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:67)
... 16 more
    Jan 28, 2015 7:36:54 PM org.apache.catalina.core.StandardContext filterStart
    SEVERE: Exception starting filter struts2
    Unable to load configuration. - [unknown location]
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:483)
at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:74)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:273)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:254)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:372)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:98)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4562)
at org.apache.catalina.core.StandardContext.call(StandardContext.java:5240)
at org.apache.catalina.core.StandardContext.call(StandardContext.java:5235)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
    Caused by: Unable to load configuration. - [unknown location]
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:70)
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:429)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:471)
... 14 more
    Caused by: Parent package is not defined: jasperreports-default - [unknown location]
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.buildPackageContext(XmlConfigurationProvider.java:660)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:508)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:290)
at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:112)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:239)
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:67)

struts.xml

    <action name="TestReportExportSupport!*" class="TestReportExportSupport">

        <result name="success" type="jasper">
            <param name="location">our_compiled_template.jasper</param>
            <param name="dataSource">myList</param>
            <param name="format">PDF</param>
        </result>

    </action>
</package>
</struts>

动作class public class JasperAction 扩展了 ActionSupport {

/** List to use as our JasperReports dataSource. */
private List<Person> myList;

public String execute() throws Exception {

    // Create some imaginary persons.
    Person p1 = new Person(new Long(1), "Patrick", "Lightbuddie");
    Person p2 = new Person(new Long(2), "Jason", "Carrora");
    Person p3 = new Person(new Long(3), "Alexandru", "Papesco");
    Person p4 = new Person(new Long(4), "Jay", "Boss");

    // Store people in our dataSource list (normally they would come from a database).
    myList = new ArrayList<Person>();
    myList.add(p1);
    myList.add(p2);
    myList.add(p3);
    myList.add(p4);

    // Normally we would provide a pre-compiled .jrxml file
    // or check to make sure we don't compile on every request.
    try {
        JasperCompileManager.compileReportToFile(
                "S2_WEBAPP/jasper/our_jasper_template.jrxml",
                "S2_WEBAPP/jasper/our_compiled_template.jasper");
    } catch (Exception e) {
        e.printStackTrace();
        return ERROR;
    }

    return SUCCESS;
}

public List<Person> getMyList() {
    return myList;
}

}

使用的罐子 1.jasperreports-1.2.5.jar 2. itext-1.3.jar 3.jdt-compiler.jar

谁能帮我解决这个问题。我尝试了 2 天……互联网上提供了很多解决方案。

Answer 1

您好，我在这里发现了问题。我包含了 struts2-jasperreports-plugin-2.1.8.1.jar 和 jdt-compiler-3.1.1.jar。我错过了 struts2-jasperreports-plugin-2.1.8.1.jar。我还添加了 -XX:PermSize=256m -XX:MaxPermSize=256m 到服务器以提高 perm space（但这与上述问题无关）。

感谢戴夫提供线索。

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