ear maven项目中如何解决java.lang.NoClassDefFoundError？

Question

环境：

Jboss 7.2
Java11

我尝试从 Front 模块执行 Commons 模块中的方法。 Front 模块没有 jasper 报告依赖，并从它使用 jasper 报告库的 Commons 模块执行一个方法。

它是从 Jboss5.2 迁移过来的，它工作正常，但是对于 Jboss7.2 我有一些问题。

当我尝试从 Front 模块执行 ReportManager 方法（公共模块）时，它抛出 java.lang.NoClassDefFoundError：net/sf/jasperreports/engine/JRException

知道这是为什么吗？

前置模组pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>es.new.for</groupId>
        <artifactId>for2</artifactId>
        <version>8.0.0</version>
    </parent>

    <artifactId>for-front</artifactId>
    <packaging>war</packaging>
    <name>for-front</name>

        <dependency>
            <groupId>es.new.for</groupId>
            <artifactId>for-commons</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>es.new.for</groupId>
            <artifactId>for-ejb</artifactId>
            <scope>provided</scope>
        </dependency>
        <!--No dependency to jasperreport-->
        ...

公共模块 pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <groupId>es.new.for</groupId>
        <artifactId>for2</artifactId>
        <version>8.0.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>for-commons</artifactId>
    <packaging>jar</packaging>
    <name>for-commons</name>
...
        <dependency>
            <groupId>net.sf.jasperreports</groupId>
            <artifactId>jasperreports-fonts</artifactId>
            <version>4.0.0</version>
        </dependency>
        ...

ReportManager.java（公共模块）

public class ReportManager { ... public static byte[] compilaReport(byte[] report) 抛出 AppException { 尝试 { log.info("编译"); ByteArrayInputStream inputStream = new ByteArrayInputStream(报告);

        JasperReport compiled = JasperCompileManager.compileReport(inputStream);

        return SerializationUtils.serialize(compiled);
    } catch (Exception e) {
        log.error("compile report", e);
        throw new AppException("InformeService.compile: Problem with compiling report", new AppException("Report compile error", e));
    }
}

...

ExecutarInformeBean.java（前模块）

public void compileReport(Informe informe, Map<String, Object> parametresSend) {

    if (informe != null) {

        try {

            if (parametresSend == null)
                parametresSend = new HashMap<>();

            // añadimos subinformes
            List<Parametre> parametres = informe.getParametres();
            for (Parametre parametre : parametres) {
                if (parametre.getTipus().equalsIgnoreCase("SUBINFORME")) {
                    try {
                        if (parametre.getSubInformeCompilado() == null) {
**                            parametre.setSubInformeCompilado(ReportManager.compilaReport(parametre.getSubInformeOriginal()));//Exeption java.lang.NoClassDefFoundError: net/sf/jasperreports/engine/JRException
                        }
**                        ReportManager.addParameter(parametresSend, parametre); //Exeption java.lang.NoClassDefFoundError: net/sf/jasperreports/engine/JRException
                    } catch (AppException e) {
                        log.error("compileReport subinforme", e);
                    } catch (Exception e) {
                        log.error("compileReport subinforme", e);
                    }
                }
            }
            ...

错误

13:36:57,311 SEVERE [org.primefaces.application.exceptionhandler.PrimeExceptionHandler] (default task-1) net/sf/jasperreports/engine/JRException: java.lang.NoClassDefFoundError: net/sf/jasperreports/engine/JRException
    at deployment.for2.ear.for-front.war//es.new.for.presentation.front.informe.ExecutarInformeBean.compileReport(ExecutarInformeBean.java:200)
    at deployment.for2.ear.for-front.war//es.new.for.presentation.front.informe.ExecutarInformeBean.executaReportDirecte(ExecutarInformeBean.java:134)
    at deployment.for2.ear.for-front.war//es.new.for.presentation.front.informe.ExecutarInformeBean.reportDirecto(ExecutarInformeBean.java:74)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)

Answer 1

您将范围声明为 provided，这意味着工件未打包到 EAR 中。

如果没有以任何其他方式提供，调用 JAR 将失败。

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