从Java 8迁移到Java 11-无法加载jdk.internal.util类（java.lang.NoClassDefFoundError）

Question

从Java 8迁移到Java 11打开JDK。当来自java.base模块的一个类（java.util.Arrays）无法访问来自jdk.internal.util.ArraysSupport模块的另一个类（java.base）时，出现奇怪的错误。

如果查看java.base的module-info，则不会导出模块jdk.internal.util包。我尝试了--add-export java.base/jdk.internal.util=ALL-UNNAMED，但得到了同样的错误。由于--add-export有助于将软件包导出到另一个模块。这里的问题是来自同一模块的一个类无法访问来自同一模块的另一类。不知道这里出了什么问题并在寻找建议。

java.lang.NoClassDefFoundError: Could not initialize class jdk.internal.util.ArraysSupport
        at java.base/java.util.Arrays.equals(Arrays.java:2873)
        at java.base/sun.security.util.ObjectIdentifier.equals(ObjectIdentifier.java:345)
        at java.base/sun.security.pkcs.PKCS7.parse(PKCS7.java:185)
        at java.base/sun.security.pkcs.PKCS7.parse(PKCS7.java:154)
        at java.base/sun.security.pkcs.PKCS7.<init>(PKCS7.java:136)
        at java.base/sun.security.util.SignatureFileVerifier.<init>(SignatureFileVerifier.java:127)
        at java.base/java.util.jar.JarVerifier.processEntry(JarVerifier.java:297)
        at java.base/java.util.jar.JarVerifier.update(JarVerifier.java:230)
        at java.base/java.util.jar.JarFile.initializeVerifier(JarFile.java:757)
        at java.base/java.util.jar.JarFile.ensureInitialization(JarFile.java:1034)
        at java.base/java.util.jar.JavaUtilJarAccessImpl.ensureInitialization(JavaUtilJarAccessImpl.java:69)
        at java.base/jdk.internal.loader.URLClassPath$JarLoader$2.getManifest(URLClassPath.java:870)
        at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:788)
        at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:700)
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:623)
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
        at java.base/java.lang.Class.forName0(Native Method)
        at java.base/java.lang.Class.forName(Class.java:315)
        at org.apache.commons.dbcp2.BasicDataSource.createConnectionFactory(BasicDataSource.java:2124)
        at org.apache.commons.dbcp2.BasicDataSource.createDataSource(BasicDataSource.java:2033)
        at org.apache.commons.dbcp2.BasicDataSource.getConnection(BasicDataSource.java:1533)
        at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:158)
        at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:116)
        at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:79)
        at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:371)
        at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:590)
        at com.rbccm.sales.hub.employee.tasklet.SalesHubSQLExecutionTasklet.execute(SalesHubSQLExecutionTasklet.java:45)
        at org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:406)
        at org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:330)
        at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140)
        at org.springframework.batch.core.step.tasklet.TaskletStep$2.doInChunkContext(TaskletStep.java:272)
        at org.springframework.batch.core.scope.context.StepContextRepeatCallback.doInIteration(StepContextRepeatCallback.java:81)
        at org.springframework.batch.repeat.support.RepeatTemplate.getNextResult(RepeatTemplate.java:375)
        at org.springframework.batch.repeat.support.RepeatTemplate.executeInternal(RepeatTemplate.java:215)
        at org.springframework.batch.repeat.support.RepeatTemplate.iterate(RepeatTemplate.java:145)
        at org.springframework.batch.core.step.tasklet.TaskletStep.doExecute(TaskletStep.java:257)
        at org.springframework.batch.core.step.AbstractStep.execute(AbstractStep.java:200)
        at org.springframework.batch.core.job.SimpleStepHandler.handleStep(SimpleStepHandler.java:148)
        at org.springframework.batch.core.job.flow.JobFlowExecutor.executeStep(JobFlowExecutor.java:66)

SalesHubSQLExecutionTasklet类的代码如下

@Override
public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
    JdbcTemplate jdbcTemplate = new JdbcTemplate(this.getDataSource());

    long start = System.currentTimeMillis();
    try {
        if (!StringUtils.isBlank(this.getSql())) {
            if (this.getSql().toUpperCase().startsWith("UPDATE")) {
                int result = jdbcTemplate.update(this.getSql());
                LOGGER.info("{} records updated executing SQL [{}]", result, this.getSql());
            }
            else {
                jdbcTemplate.execute(this.getSql());
            }   
        }
        else if (this.sqls != null && this.sqls.length > 0) {
            int[] result = jdbcTemplate.batchUpdate(sqls);
            for (int i=0; i<sqls.length; i++) {
                LOGGER.info("SQL [{}] result [{}].", sqls[i], result[i]);
            }
        }
    }
    catch (Exception ex) {
        LOGGER.error("Error executing SQL [{}]", this.getSql(), ex);
    }
    LOGGER.info("Step {} execute SQL [{}] finished in {} ms.", chunkContext.getStepContext().getStepName(), this.getSql(), (System.currentTimeMillis()-start));

    return RepeatStatus.FINISHED;
}

第45行是

int[] result = jdbcTemplate.batchUpdate(sqls);

我试图在Unix机器上加载一个单独的普通类。它工作正常

Class<?> classToLoad = Class.forName("jdk.internal.util.ArraysSupport");

并且它成功加载了该类，所以不确定这里出了什么问题！

Answer 1

我用最新的Hikari数据源替换了最新的dbcp数据源，并且它起作用了。谢谢大家的建议。