我们将应用程序从Weblogic 9.2迁移到Weblogic 12.1.2。由于未记录NullPointerException，因此使用管理控制台部署EAR失败。在大量搜索此堆栈跟踪和错误消息之后，我们发现的内容很少。具有相似主题的One OTN Thread指出Weblogic Classpath和EAR中JAR的数量增加了一倍。因此，我们在Weblogic Installation和EAR中搜索了JAR倍增。 EAR已打包xml-apis-1.3.02.jar，而WL Classpath包括xml-apis.jar。从EAR中删除xml-apis-1.3.02.jar并进行新的部署后，我们再次遇到了相同的NullPointerException。
The stacktrace of the Exception
EAR的成分：
APP-INF / lib
激活1.1.jar
注解.jar
aopalliance-1.0.jar
条码4j.jar
commons-beanutils-1.8.3.jar
commons-codec-1.6.jar
commons-collections-3.2.1.jar
commons-compress-1.5.jar
commons-digester-2.1.jar
commons-io-2.2.jar
commons-lang-2.6.jar
commons-logging-1.1.1.jar
core_bg_common.jar
core_bg_server.jar
core_bg_server_ejb.jar
core_common.jar
core_server.jar
core_server_ejb.jar
dom4j-1.6.1.jar
domain-1.0.jar
ejb3-persistence-1.0.1.GA.jar
itext-2.1.7.jar
jasperreports-4.1.1.jar
java-image-scaling-0.8.5.jar
jaxb-api-2.1.jar
jaxb-impl-2.1.13.jar
jcommon-1.0.15.jar
jdtcore-3.1.0.jar
jfreechart-1.0.12.jar
jmf-2.1.1e.jar
joda-time-1.6.jar
libsqlite4java-linux-amd64.so
libsqlite4java-linux-i386.so
mail-1.4.1.jar
mybatis-2.3.5.jar
opencsv-2.3.jar
poi-3.9.jar
poi-ooxml-3.9.jar
poi-ooxml-schemas-3.9.jar
spring-aop-3.1.1.RELEASE.jar
spring-asm-3.1.1.RELEASE.jar
spring-beans-3.1.1.RELEASE.jar
spring-context-3.1.1.RELEASE.jar
弹簧上下文支持3.1.1.RELEASE.jar
spring-core-3.1.1.RELEASE.jar
spring-expression-3.1.1.RELEASE.jar
spring-jdbc-3.1.1.RELEASE.jar
spring-orm-3.1.1.RELEASE.jar
弹簧测试3.1.1.RELEASE.jar
spring-tx-3.1.1.RELEASE.jar
spring-web-3.1.1.RELEASE.jar
sqlite4java-win32-x64.dll
sqlite4java-win32-x86.dll
sqlite4java.jar
标准1.1.2.jar
stax-api-1.0-2.jar
swiftgantt-0.4.0.jar
swing-layout-1.0.3.jar
合成的
wadl-core-1.1.jar
xmlbeans-2.6.0.jar
xmlenc-0.52.jar
xz-1.2.jar
那就是Weblogic附带的内容：
aether-api-1.13.1.jar
aether-connector-wagon-1.13.1.jar
aether-impl-1.13.1.jar
aether-spi-1.13.1.jar
aether-util-1.13.1.jar
ant.jar
ant.jar
ant-all.jar
ant-all.jar
ant-antlr.jar
ant-antlr.jar
ant-apache-bcel.jar
ant-apache-bcel.jar
ant-apache-bsf.jar
ant-apache-bsf.jar
ant-apache-log4j.jar
ant-apache-log4j.jar
ant-apache-oro.jar
ant-apache-oro.jar
ant-apache-regexp.jar
ant-apache-regexp.jar
ant-apache-resolver.jar
ant-apache-resolver.jar
ant-apache-xalan2.jar
ant-bootstrap.jar
ant-bootstrap.jar
ant-commons-logging.jar
ant-commons-logging.jar
ant-commons-net.jar
ant-commons-net.jar
ant-contrib.jar
ant-jai.jar
ant-jai.jar
ant-javamail.jar
ant-javamail.jar
ant-jdepend.jar
ant-jdepend.jar
ant-jmf.jar
ant-jmf.jar
ant-jsch.jar
ant-jsch.jar
ant-junit.jar
ant-junit.jar
ant-junit4.jar
ant-launcher.jar
ant-launcher.jar
ant-netrexx.jar
ant-netrexx.jar
ant-nodeps.jar
ant-starteam.jar
ant-stylebook.jar
ant-swing.jar
ant-swing.jar
ant-testutil.jar
ant-testutil.jar
ant-trax.jar
ant-weblogic.jar
asm-3.1.jar
bcprov-jdk16-1.45.jar
cieCfg_common_rcu_lib_12.1.2.jar
cieCfg_common_svctbl_lib_12.1.2.jar
com.bea.core.apache.commons.collections_3.2.2.jar
com.bea.core.apache.commons.lang_2.7.0.jar
com.bea.core.binxml_1.7.0.0.jar
com.bea.core.i18n_2.1.0.0.jar
com.bea.core.xml.xmlbeans_2.2.0.0_2-5-1.jar
com.bea.core.xquery.xmlbeans-interop_1.7.0.0.jar
com.bea.core.xquery_1.7.0.0.jar
com.oracle.cie.comdev_7.0.0.0.jar
com.oracle.cie.config_8.0.0.0.jar
com.oracle.cie.config_8.0.0.0.jar
com.oracle.cie.config-owsm_8.0.0.0.jar
com.oracle.cie.config-quickstart-launcher_1.0.0.0.jar
com.oracle.cie.config-quickstart-schema-launcher_1.0.0.0.jar
com.oracle.cie.config-security_1.0.0.0.jar
com.oracle.cie.config-security_8.0.0.0.jar
com.oracle.cie.config-security-impl_8.0.0.0.jar
com.oracle.cie.config-wls_8.0.0.0.jar
com.oracle.cie.config-wls-online_8.0.0.0.jar
com.oracle.cie.config-wls-schema_12.1.2.0.jar
com.oracle.cie.dependency_1.0.0.0.jar
com.oracle.cie.encryption_2.0.0.0.jar
com.oracle.cie.oui_1.3.0.0.jar
com.oracle.cie.rcu_1.0.0.0.jar
com.oracle.cie.service-table_1.0.0.0.jar
com.oracle.cie.service-table-impl_1.0.0.0.jar
com.oracle.cie.service-table-schema_1.0.0.0.jar
com.oracle.cie.wizard_7.0.0.0.jar
com.oracle.cie.xmldh_2.6.0.0.jar
com.oracle.state-management.executor-internal-api_12.1.2.jar
com.oracle.state-management.persistence-service-internal-api_12.1.2.jar
com.oracle.state-management.persistence-service-provider-state-management-impl_12.1.2.jar
com.oracle.state-management.state-management-internal-api_12.1.2.jar
com.oracle.state-management.state-management-provider-aggregate-impl_12.1.2.jar
com.oracle.state-management.state-management-provider-coherence-impl_12.1.2.jar
com.oracle.state-management.state-management-provider-common-internal-api_12.1.2.jar
com.oracle.state-management.state-management-provider-jdbc-impl_12.1.2.jar
com.oracle.state-management.state-management-provider-memory-impl_12.1.2.jar
com.oracle.state-management.transactional-map-internal-api_12.1.2.jar
com.oracle.weblogic.sca.engine_3.0.0.0.jar
com.oracle.webservices.audit-internal-api_12.1.2.jar
com.oracle.webservices.disi-impl_12.1.2.jar
com.oracle.webservices.disi-internal-api_12.1.2.jar
com.oracle.webservices.fabric-common-api_12.1.2.jar
com.oracle.webservices.logging-internal-api_12.1.2.jar
com.oracle.webservices.mdds-api_12.1.2.jar
com.oracle.webservices.mdds-jersey-api_12.1.2.jar
com.oracle.webservices.orasaaj-rt-api_12.1.2.jar
com.oracle.webservices.orawsdl-api_12.1.2.jar
com.oracle.webservices.session-manager-impl_12.1.2.jar
com.oracle.webservices.session-manager-internal-api_12.1.2.jar
com.oracle.webservices.user-api_12.1.2.jar
com.oracle.webservices.wls.wls-ws-api_2.0.0.0.jar
com.oracle.webservices.wls.wls-ws-metainf-services_2.0.0.0.jar
com.oracle.webservices.ws-databinding-api_3.0.0.0.jar
com.oracle.webservices.ws-databinding-impl_3.0.0.0.jar
com.oracle.webservices.ws-star-impl_1.0.0.0.jar
com.sun.istack.istack-commons-runtime_2.13.jar
com.sun.org.apache.xml.internal.resolver_20050927.jar
com.sun.xml.bind.jaxb-core_2.2.jar
com.sun.xml.bind.jaxb-impl_2.2.jar
com.sun.xml.bind.jaxb-jxc_2.2.jar
com.sun.xml.bind.jaxb-xjc_2.2.jar
com.sun.xml.fastinfoset.FastInfoset_1.2.12.jar
com.sun.xml.messaging.saaj.saaj-impl_1.3.jar
com.sun.xml.stream.buffer.streambuffer_2.2.jar
com.sun.xml.ws.jaxws-eclipselink-plugin_2.2.jar
com.sun.xml.ws.jaxws-rt_2.2.jar
com.sun.xml.ws.jaxws-tools_2.2.jar
com.sun.xml.ws.policy_2.3.1.jar
com.sun.xml.ws.sdo-eclipselink-plugin_2.2.jar
commonj.sdo_2.1.1.jar
commons-cli-1.2.jar
cryptoj_5_0.jar
dms.jar
eclipselink.jar
fmwgenerictoken.jar
glassfish.el_1.1.0.0_2-2.jar
jackson-core-asl-1.9.2.jar
jackson-jaxrs-1.9.2.jar
jackson-mapper-asl-1.9.2.jar
杰克逊-xc-1.9.2.jar
javax.annotation_1.1.0.0_1-1.jar
javax.ejb_3.2.0.jar
javax.jms_1.1.3.jar
javax.jsp_3.0.0.0_2-2.jar
javax.mail_1.1.0.0_1-4-4.jar
javax.management.j2ee_1.1.0.0.jar
javax.persistence_2.0.0.0_2-0.jar
javax.persistence_2.1.0.0_1-0-2.jar
javax.servlet_2.1.0.0_3-0.jar
javax.xml.bind_2.2.4.jar
javax.xml.rpc_1.2.3.jar
javax.xml.stream_1.1.1.0.jar
javax.xml.ws_2.3.0.jar
javax-xml-bind.jar
javax-xml-ws.jar
jersey-client-1.17.1.jar
jersey-core-1.17.1.jar
jersey-json-1.17.1.jar
jersey-multipart-1.17.1.jar
jersey-server-1.17.1.jar
jersey-servlet-1.17.1.jar
jettison-1.1.jar
jsr250-api.jar
jsr311-api-1.1.1.jar
maven-aether-provider-3.0.4.jar
maven-artifact-3.0.4.jar
maven-compat-3.0.4.jar
maven-core-3.0.4.jar
maven-embedder-3.0.4.jar
maven-model-3.0.4.jar
maven-model-builder-3.0.4.jar
maven-plugin-api-3.0.4.jar
maven-repository-metadata-3.0.4.jar
maven-settings-3.0.4.jar
maven-settings-builder-3.0.4.jar
mysql-connector-java-commercial-5.1.22-bin.jar
oauth-client-1.17.1.jar
oauth-server-1.17.1.jar
oauth-signature-1.17.1.jar
ojdbc6.jar
ojdbc6_g.jar
ojdbc6dms.jar
ojdl.jar
ojdl2.jar
ojmisc.jar
ons.jar
oracle.http_client_12.1.2.jar
oracle.http_client_oracle.http_client_12.1.2.jar
oracle.toplink.wls_12.1.2.jar
oracle.ucp_11.2.0.jar
oracle.webservices.base.wls.classpath_12.1.2.jar
oraclepki.jar
orai18n.jar
orai18n-collation.jar
orai18n-lcsd.jar
orai18n-mapping.jar
orai18n-net.jar
orai18n-net-ee.jar
orai18n-servlet.jar
orai18n-tools.jar
orai18n-translation.jar
orai18n-utility.jar
orapki.lib_12.1.2.jar
org.apache.ant.patch_2.0.0.0_1-8-4.jar
org.apache.ant.patch_2.1.0.0_1-7-1.jar
org.codehaus.woodstox.stax2-api_3.1.1.jar
org.codehaus.woodstox.woodstox-core-asl_4.1.2.jar
org.eclipse.persistence.nosql.jar
org.eclipse.persistence.oracle.nosql.jar
org.glassfish.external.management-api_3.1.0.b001.jar
org.glassfish.gmbal.gmbal-api-only_3.1.0.b001.jar
org.glassfish.ha.ha-api_3.1.0.b001.jar
org.glassfish.metro.metro-cm-api_2.3.jar
org.glassfish.metro.metro-cm-impl_2.3.jar
org.jvnet.mimepull.mimepull_1.9.jar
org.jvnet.staxex.stax-ex_1.7.1.jar
osdt_cert.jar
osdt_core.jar
plexus-cipher-1.7.jar
plexus-classworlds-2.4.jar
plexus-component-annotations-1.5.5.jar
丛插值1.14.jar
plexus-sec-dispatcher-1.3.jar
plexus-utils-2.0.6.jar
sisu-guava-0.9.9.jar
sisu-guice-3.1.0-no_aop.jar
sisu-inject-bean-2.3.0.jar
sisu-inject-plexus-2.3.0.jar
svctbl_jmx_client_12.1.2.jar
toplink-dataservices.jar
toplink-dataservices-web.jar
toplink-grid.jar
wagon-file-2.2.jar
wagon-http-2.2-shaded.jar
wagon-provider-api-2.2.jar
weblogic.jaxrs.client_2.0.0.0.jar
weblogic.jaxrs.internal.common_1.1.0.0.jar
weblogic.jaxrs.server_2.0.0.0.jar
weblogic.server.modules.portable_12.1.2.0.jar
wldb2.jar
wldcw.jar
wldcw_de.jar
wldcw_es.jar
wldcw_fr.jar
wldcw_it.jar
wldcw_ja.jar
wldcw_ko.jar
wldcw_pt_BR.jar
wldcw_zh_CN.jar
wldcw_zh_TW.jar
wlinformix.jar
wlsqlserver.jar
wlsThirdPartyJdbcDrivers.jar
wlsybase.jar
wltbh.jar
wltbh_de.jar
wltbh_es.jar
wltbh_fr.jar
wltbh_it.jar
wltbh_ja.jar
wltbh_ko.jar
wltbh_pt_BR.jar
wltbh_zh_CN.jar
wltbh_zh_TW.jar
wlupg.jar
wlupg_de.jar
wlupg_es.jar
wlupg_fr.jar
wlupg_it.jar
wlupg_ja.jar
wlupg_ko.jar
wlupg_pt_BR.jar
wlupg_zh_CN.jar
wlupg_zh_TW.jar
xercesImpl.jar
xml-apis.jar
xmlmesg.jar
xmlparserv2_jaxp_services.jar
xmlparserv2_sans_jaxp_services.jar
最佳答案
首先，我不认为您粘贴的异常是“真实”错误，而是另一个错误的征兆。无法激活更改，即安装您的.ear文件。该异常没有帮助。如果我不得不猜测日志中的某个地方还有另一个错误。通常，classpath中受骗的jar会导致NoClassDefFoundError或ClassNotFoundException。检查那些。
其次，如果您的部署和默认的weblogic类路径之间存在类冲突，则可以尝试将其添加到weblogic.xml中以强制其使用您的耳朵中的库：
<wls:prefer-application-packages>
<wls:package-name>package.that.conflicts.*</wls:package-name>
</wls:prefer-application-packages>