我们使用Spring引导和hibernate数据库映射。 实体包含映射为使用 package-info.java 文件定义的自定义类型的JSON列。
当我们从Eclipse IDE运行spring-project时,一切正常,我们可以调用我们的Web服务。
当我们生成可执行jar并尝试调用我们的Web服务时,会引发以下错误:
mai 04, 2017 1:35:00 PM org.apache.catalina.core.StandardWrapperValve invoke
GRAVE: Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.RuntimeException: Unable to execute job Test] with root cause
java.lang.NoClassDefFoundError: BOOT-INF/classes/com/test/package-info (wrong name: com/test/package-info)
at java.lang.ClassLoader.defineClass1(Native Method)
文件package-info.class进入jar BOOT-INF / classes / com / test / package-info 什么可能是错的?
感谢您的帮助
答案 0 :(得分:3)
我通过禁用包扫描和Hibernate分类的自动检测解决了这个问题
<persistence-unit name="sqlProvider" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<class>com.example.package.dao</class>
.........
<properties>
<property name="exclude-unlisted-classes" value="true"/>
<property name="hibernate.archive.autodetection" value="hbm" />
.........
</properties>
.........
</persistence-unit>
答案 1 :(得分:0)
我不想禁用扫描,因为手动将所有类添加到persistence.xml
不是一种选择。由于我们在项目中实际上没有为hibernate使用包级别注释,因此我创造了这个令人厌恶的东西:
package com.example;
import org.hibernate.boot.archive.scan.internal.ScanResultImpl;
import org.hibernate.boot.archive.scan.internal.StandardScanner;
import org.hibernate.boot.archive.scan.spi.ScanEnvironment;
import org.hibernate.boot.archive.scan.spi.ScanOptions;
import org.hibernate.boot.archive.scan.spi.ScanParameters;
import org.hibernate.boot.archive.scan.spi.ScanResult;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Collections;
public class HibernateHackScanner extends StandardScanner {
private static final Logger log = LoggerFactory.getLogger(HibernateHackScanner.class);
@Override
public ScanResult scan(ScanEnvironment environment, ScanOptions options, ScanParameters parameters) {
log.info("Hack-Scanner is active, annotated packages will not be found by this scanner.");
ScanResult scan = super.scan(environment, options, parameters);
return new ScanResultImpl(Collections.emptySet(), scan.getLocatedClasses(), scan.getLocatedMappingFiles());
}
}
然后我在persistence.xml
中启用了此自定义扫描程序:
<property name="hibernate.archive.scanner" value="com.example.HibernateHackScanner"/>
此扫描仪使用引擎盖下的标准扫描仪,只需丢弃所有带注释的boot_inf.classes
等附加注释的包。如果你真的需要包级别注释,你需要比这个拐杖更复杂一点。但这对我有用_ \ _(ツ)_ /¯
答案 2 :(得分:0)
我使用cxf-codegen-plugin
来生成entites。在我的情况下,排除package-info
类解决了问题。我从项目文件中删除了package-info.class
,将extraargs添加到pom文件中,如:
<plugin>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-codegen-plugin</artifactId>
<version>${cxf.version}</version>
<executions>
<execution>
<id>mvn s</id>
<phase>generate-sources</phase>
<configuration>
<sourceRoot>${project.build.directory}/generated/cxf</sourceRoot>
<sourceRoot>${basedir}/src/main/java</sourceRoot>
<wsdlOptions>
<wsdlOption>
<wsdl>${basedir}/src/main/resources/wsdl/YOURWSDL.wsdl</wsdl>
<wsdlLocation>classpath:wsdl/YOURWSDL.wsdl</wsdlLocation>
<bindingFiles>
<bindingFile>${basedir}/src/main/resources/wsdl/bindings.xml</bindingFile>
</bindingFiles>
</wsdlOption>
<wsdlOption>
<wsdl>${basedir}/src/main/resources/wsdl/YOURWSDL.wsdl</wsdl>
<!--<extraargs>-->
<!--<extraarg>-impl</extraarg>-->
<!--<extraarg>-server</extraarg>-->
<!--</extraargs>–>-->
</wsdlOption>
</wsdlOptions>
<defaultOptions>
<extraargs>
<extraarg>-xjc-npa</extraarg>
</extraargs>
</defaultOptions>
</configuration>
<goals>
<goal>wsdl2java</goal>
</goals>
</execution>
</executions>
</plugin>
和包文件:mvn clean install spring-boot:repackage -DskipTests
。现在它工作正常。
答案 3 :(得分:0)
Nestor Fedyk解决方案帮助我解决了这个问题。
请找到以下代码,我已将解决方案添加到我的休眠配置文件中
“排除未列出的类” 添加了“ hibernate.archive.autodetection” 属性
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="rcsDataSource"/>
<property name="persistenceUnitName" value="corePersistenceUnit"/>
<property name="jpaVendorAdapter" ref="hibernateJpaVendorAdapter"/>
<property name="jpaProperties">
<props>
<prop key="hibernate.query.factory_class">org.hibernate.hql.internal.classic.ClassicQueryTranslatorFactory</prop>
<prop key="hibernate.cache.use_second_level_cache">false</prop>
<prop key="hibernate.cache.use_query_cache">false</prop>
<prop key="hibernate.cache.region.factory_class">xxxx.xxxxxxxx.xxxx</prop>
<prop key="hibernate.cache.provider_class">xxx.xxxxxxxx.xxxx</prop>
<prop key="hibernate.cache.use_structured_entries">false</prop>
<prop key="hibernate.generate_statistics">true</prop>
<prop key="hibernate.default_batch_fetch_size">250</prop>
<prop key="hibernate.max_fetch_depth">5</prop>
<prop key="hibernate.jdbc.fetch_size">300</prop>
<prop key="exclude-unlisted-classes">true</prop>
<prop key="hibernate.archive.autodetection">"hbm"</prop>
</props>
</property>
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
</property>
</bean>
我希望这对您有帮助
答案 4 :(得分:0)
我设法对JanThomä的解决方案进行了修改:
package com.example;
import org.hibernate.boot.archive.scan.internal.PackageDescriptorImpl;
import org.hibernate.boot.archive.scan.internal.ScanResultImpl;
import org.hibernate.boot.archive.scan.internal.StandardScanner;
import org.hibernate.boot.archive.scan.spi.*;
import org.hibernate.boot.archive.spi.ArchiveDescriptorFactory;
import java.util.Set;
import java.util.stream.Collectors;
public class CustomHibernateScanner extends StandardScanner {
private static final String SPRING_BOOT_JAR_PREFIX = "BOOT-INF.classes.";
public CustomHibernateScanner() {
}
public CustomHibernateScanner(ArchiveDescriptorFactory value) {
super(value);
}
@Override
public ScanResult scan(ScanEnvironment environment, ScanOptions options, ScanParameters parameters) {
ScanResult result = super.scan(environment, options, parameters);
Set<PackageDescriptor> pkgDesc = result.getLocatedPackages().stream()
.map(this::fixPackageDescriptor)
.collect(Collectors.toSet());
return new ScanResultImpl(pkgDesc,
result.getLocatedClasses(),
result.getLocatedMappingFiles());
}
private PackageDescriptor fixPackageDescriptor(PackageDescriptor pd) {
if (pd.getName().startsWith(SPRING_BOOT_JAR_PREFIX)) {
return new PackageDescriptorImpl(pd.getName().substring(SPRING_BOOT_JAR_PREFIX.length()), pd.getStreamAccess());
}
return pd;
}
}
与原始答案一样,它已添加到persistence.xml
中。它基本上删除了导致异常的程序包描述符名称中的前缀。
这样,它就可以工作,无需禁用软件包扫描。
答案 5 :(得分:-1)
您可以在外部jar中提取包含JAXB生成的类(即包含package-info
类的包)的包。也将JAXB相关资源移到新项目中(例如,XSD文件)。
现在你可以将这样一个jar设置为生成exacutable jar的项目的依赖项。
这样,当我从命令行运行它时,我的Spring Batch / Spring Boot项目就可以工作了。我知道这不是一个最佳解决方案,但在我的情况下,它可以工作。