【问题标题】:Optaplanner Quarkus reflection issuesOptaplanner Quarkus 反射问题
【发布时间】:2021-03-25 11:59:26
【问题描述】:

我正在使用内置的基于 XML 文件创建求解器工厂

solverFactory = SolverFactory.createFromXmlResource("solverConfig.xml");

这在编译成 Quarkus 原生应用程序之前工作正常,现在我从 Optaplanner 枚举中得到反射问题:

ERROR [io.qua.run.Application] (main) Failed to start application (with profile prod): java.lang.NoSuchFieldError: org.optaplanner.core.api.domain.common.DomainAccessType: REFLECTION
        at com.sun.xml.bind.v2.model.nav.ReflectionNavigator.getEnumConstants(ReflectionNavigator.java:25)
        at com.sun.xml.bind.v2.model.nav.ReflectionNavigator.getEnumConstants(ReflectionNavigator.java:34)
        at com.sun.xml.bind.v2.model.impl.EnumLeafInfoImpl.calcConstants(EnumLeafInfoImpl.java:117)
        at com.sun.xml.bind.v2.model.impl.EnumLeafInfoImpl.getConstants(EnumLeafInfoImpl.java:181)
        at com.sun.xml.bind.v2.model.impl.EnumLeafInfoImpl.link(EnumLeafInfoImpl.java:188)
        at com.sun.xml.bind.v2.model.impl.ModelBuilder.link(ModelBuilder.java:427)
        at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.link(RuntimeModelBuilder.java:103)
        at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:439)
        at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:273)
        at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:109)
        at com.sun.xml.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1126)
        at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:135)
        at java.lang.reflect.Method.invoke(Method.java:566)
        at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:275)
        at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:264)
        at javax.xml.bind.ContextFinder.find(ContextFinder.java:403)
        at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:691)
        at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:632)
        at org.optaplanner.core.impl.io.jaxb.GenericJaxbIO.<init>(GenericJaxbIO.java:89)
        at org.optaplanner.core.impl.io.jaxb.GenericJaxbIO.<init>(GenericJaxbIO.java:81)
        at org.optaplanner.core.impl.io.jaxb.SolverConfigIO.<init>(SolverConfigIO.java:27)
        at org.optaplanner.core.config.solver.SolverConfig.createFromXmlReader(SolverConfig.java:207)
        at org.optaplanner.core.config.solver.SolverConfig.createFromXmlInputStream(SolverConfig.java:182)
        at org.optaplanner.core.config.solver.SolverConfig.createFromXmlResource(SolverConfig.java:122)
        at org.optaplanner.core.config.solver.SolverConfig.createFromXmlResource(SolverConfig.java:97)
        at org.optaplanner.core.api.solver.SolverFactory.createFromXmlResource(SolverFactory.java:55)

我可以通过在我的类调用SolverFactory.createFromXmlResource("solverConfig.xml") 上添加@RegisterForReflection 来解决这些问题,但感觉这些反射注册不应该是手动步骤。目前我在@RegisterForReflection(targets = {EnvironmentMode.class, RandomType.class, DomainAccessType.class}),但我猜会有更多枚举添加到该列表中......真的应该这么复杂吗?我正在使用 Quarkus Optaplanner 依赖项

<dependency>
  <groupId>org.optaplanner</groupId>
  <artifactId>optaplanner-quarkus</artifactId>
</dependency>

【问题讨论】:

    标签: quarkus optaplanner


    【解决方案1】:

    通过另一种方式,我能够解决问题。

    在我以前称为solverFactory = SolverFactory.createFromXmlResource("solverConfig.xml") 的类中,我现在只注入工厂:

    @Inject
    SolverFactory<Schedule> solverFactory;
    

    并将 XML 文件名移至 application.properties:

    quarkus.optaplanner.solver-config-xml=solverConfig.xml
    

    【讨论】:

    • 您甚至可以删除该属性,因为如果该属性不存在,则默认为solverConfig.xml,如果存在就会被拾取
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