如何解决如何在Maven编译中添加“ --add-exports”编译器指令
使用Java 11编译时出现以下错误。
Symbol is declared in module 'java.xml' which does not export package 'com.sun.org.apache.xerces.internal.xni.parser'
Symbol is declared in module 'java.base' which does not export package 'sun.net.www.protocol.http'
Symbol is declared in module 'java.base' which does not export package 'sun.net.www.protocol.file'
Symbol is declared in module 'java.xml' which does not export package 'com.sun.org.apache.xerces.internal.util'
Symbol is declared in module 'java.xml' which does not export package 'com.sun.org.apache.xerces.internal.xni.parser'
Symbol is declared in module 'java.xml' which does not export package 'com.sun.org.apache.xerces.internal.xni.parser'
Symbol is declared in module 'java.xml' which does not export package 'com.sun.org.apache.xerces.internal.xni.parser'
[...]
Symbol is declared in module 'java.xml' which does not export package 'com.sun.org.apache.xerces.internal.impl.dtd'
我需要为Java编译指定--add-exports
指令。
我不知道如何将其添加到编译Kotlin代码的Maven构建中。
此外,我不确定--add-exports
的确切值。
这是我的pom.xml
。
<!-- Kotlin compilation -->
<build>
<plugins>
<plugin>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-plugin</artifactId>
<version>${kotlin.version}</version>
<executions>
<execution>
<id>compile</id>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<sourceDirs>
<source>src/main/java</source>
<source>src/main/kotlin</source>
</sourceDirs>
</configuration>
</execution>
<execution>
<id>test-compile</id>
<phase>test-compile</phase>
<goals>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
<configuration>
<jvmTarget>1.8</jvmTarget>
</configuration>
</plugin>
<!-- Bundle a standalone JAR -->
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<finalName>${project.artifactId}-${project.version}-all</finalName>
<appendAssemblyId>false</appendAssemblyId>
<archive>
<manifest>
<mainClass>DtdFinderKt</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<!-- Attempt to specify --add-export -->
<profiles>
<profile>
<id>java11-compiler-java-with-kotlin</id>
<activation>
<file><exists>${basedir}/src/main/kotlin</exists></file>
<jdk>[11,)</jdk>
</activation>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<compilerArgs>
<arg>--add-exports</arg><arg>java.xml/com.sun.org.apache.xerces.internal.impl.dtd=ALL-UNNAMED</arg>
<arg>--add-exports</arg><arg>java.xml/com.sun.org.apache.xerces.internal.xni.parser=ALL-UNNAMED</arg>
<arg>--add-exports</arg><arg>java.base/sun.net.www.protocol.http=ALL-UNNAMED</arg>
<arg>--add-exports</arg><arg>jdk.unsupported/sun.misc=ALL-UNNAMED</arg>
</compilerArgs>
</configuration>
</plugin>
</plugins>
</build>
</profile>
</profiles>
解决方法
解决方案是使用内部API在每个源文件的开头添加注释。
@file:Suppress("JAVA_MODULE_DOES_NOT_EXPORT_PACKAGE")
找到此注释的原因是this thread on Kotlin support forum。
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