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Quarkus改造Pmml模型項目異常記錄及解決處理

更新時間：2022年02月23日 10:34:43 作者：kl

這篇文章主要為大家介紹了Quarkus改造Pmml模型項目是遇到的異常記錄以及解決方法，有需要的同學(xué)可以借鑒參考下，希望能夠有所幫助，祝大家多多進步

前言

這個項目是一個PMML模型跑分系統(tǒng)，在使用quarkus架構(gòu)對其改造的過程中，在加載PMML模型時，拋了一個異常，在網(wǎng)上找了很多資料都沒有解決，pmml項目的issue中也沒有找到相關(guān)的內(nèi)容，故在此記錄下，給遇到問題的你做個參考

jpmml-evaluator：https://github.com/jpmml/jpmml-evaluator

異常如下：

java.lang.LinkageError: loader constraint violation: when resolving field "DATETIME" of type javax.xml.namespace.QName, the class loader io.quarkus.bootstrap.classloading.QuarkusClassLoader @58fd1214 (instance of io.quarkus.bootstrap.classloading.QuarkusClassLoader, child of 'platform' jdk.internal.loader.ClassLoaders$PlatformClassLoader) of the current class, com.sun.xml.bind.v2.model.impl.RuntimeBuiltinLeafInfoImpl, and the class loader 'bootstrap' for the field's defining type, javax.xml.datatype.DatatypeConstants, have different Class objects for type javax.xml.namespace.QName
	at com.sun.xml.bind.v2.model.impl.RuntimeBuiltinLeafInfoImpl.<clinit>(RuntimeBuiltinLeafInfoImpl.java:254)
	at com.sun.xml.bind.v2.model.impl.RuntimeTypeInfoSetImpl.<init>(RuntimeTypeInfoSetImpl.java:33)
	at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.createTypeInfoSet(RuntimeModelBuilder.java:98)
	at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.createTypeInfoSet(RuntimeModelBuilder.java:54)
	at com.sun.xml.bind.v2.model.impl.ModelBuilder.<init>(ModelBuilder.java:132)
	at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.<init>(RuntimeModelBuilder.java:62)
	at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:425)
	at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:273)
	at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:109)
	at com.sun.xml.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1126)
	at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:135)
	at com.sun.xml.bind.v2.JAXBContextFactory.createContext(JAXBContextFactory.java:35)
	at javax.xml.bind.ContextFinder.find(ContextFinder.java:393)
	at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:691)
	at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:632)
	at org.jpmml.model.JAXBUtil.getContext(JAXBUtil.java:103)
	at org.jpmml.model.JAXBUtil.createUnmarshaller(JAXBUtil.java:143)
	at org.jpmml.evaluator.LoadingModelEvaluatorBuilder.load(LoadingModelEvaluatorBuilder.java:88)
	at org.jpmml.evaluator.LoadingModelEvaluatorBuilder.load(LoadingModelEvaluatorBuilder.java:78)
	at org.jpmml.evaluator.LoadingModelEvaluatorBuilder.load(LoadingModelEvaluatorBuilder.java:66)

解決

最后發(fā)現(xiàn)是一個依賴的jar包中帶的一個依賴stax-api導(dǎo)致的問題，實際上并沒有使用到這個依賴，所以排除即可

<dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
            <version>3.6.0</version>
            <exclusions>
                <exclusion>
                    <artifactId>stax-api</artifactId>
                    <groupId>stax</groupId>
                </exclusion>
            </exclusions>
        </dependency>