[英]Module not found: How to compile JDK 10 Eclipse Maven Project with Module?
以下是我的pom.xml的主要部分:
特性:
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.build.targetEncoding>UTF-8</project.build.targetEncoding>
<jdk.release>10</jdk.release>
<jdk.vendor>oracle</jdk.vendor>
<maven.compiler.source>1.10</maven.compiler.source>
<maven.compiler.target>1.10</maven.compiler.target>
<dependency.asm.version>6.2</dependency.asm.version>
<dependency.log4j2.version>2.11.0</dependency.log4j2.version>
<plugin.maven-toolchains.version>1.1</plugin.maven-toolchains.version>
<plugin.maven-compiler.version>3.7.0</plugin.maven-compiler.version>
<plugin.maven-dependency.version>3.1.1</plugin.maven-dependency.version>
<plugin.maven-jar.version>3.1.0</plugin.maven-jar.version>
</properties>
依賴項 :
<dependencies>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>${dependency.log4j2.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>${dependency.log4j2.version}</version>
</dependency>
</dependencies>
插件 :
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-toolchains-plugin</artifactId>
<version>${plugin.maven-toolchains.version}</version>
<executions>
<execution>
<goals>
<goal>toolchain</goal>
</goals>
</execution>
</executions>
<configuration>
<toolchains>
<jdk>
<version>${jdk.release}</version>
<vendor>${jdk.vendor}</vendor>
</jdk>
</toolchains>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${plugin.maven-compiler.version}</version>
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
<release>${jdk.release}</release>
</configuration>
<dependencies>
<dependency>
<groupId>org.ow2.asm</groupId>
<artifactId>asm</artifactId>
<version>${dependency.asm.version}</version>
</dependency>
</dependencies>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>${plugin.maven-dependency.version}</version>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.basedir}/dist/lib/</outputDirectory>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>${plugin.maven-jar.version}</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>./lib/</classpathPrefix>
<mainClass>com.mycompany.tbe.myproject.Application</mainClass>
<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
<addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<outputDirectory>${project.basedir}/dist</outputDirectory>
</configuration>
</plugin>
</plugins>
項目結構為:
project
+
|-- src
| +
| |-- main
| | +
| | |-- java
| | | +
| | | |-- com
| | | | +
| | | | |-- mycompany
| | | | | +
| | | | | |-- tbe
| | | | | | +
| | | | | | |-- myproject
| | | |-- module-info.java
| | |-- resources
|-- pom.xml
module-info.java
包含:
/**
* @author Tapas Bose
*/
module project {
exports com.mycompany.tbe.myproject;
requires log4j.api;
}
當我執行時: mvn clean package
它拋出錯誤,告訴:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.7.0:compile (default-compile) on project <my-project>: Compilation failure
[ERROR] <path-to-my-project>/src/main/java/module-info.java:[7,15] error: module not found: log4j.api
我還嘗試通過指定配置在maven-compiler-plugin
提供--add-modules
參數:
<configuration>
<compilerArgs>
<arg>--add-modules</arg>
<arg>log4j.api</arg>
</compilerArgs>
</configuration>
但這也不起作用。
幾點:
如果我刪除module-info.java
它可以工作。
module-info.java
由Eclipse生成。
java describe-module
揭示了以下內容:
$ jar --file=log4j-api-2.11.0.jar --describe-module
releases: 9
No root module descriptor, specify --release
$ jar --file=log4j-api-2.11.0.jar --describe-module --release 9
releases: 9
org.apache.logging.log4j jar:file:///<path-to-maven-local-repository>/org/apache/logging/log4j/log4j-api/2.11.0/log4j-api-2.11.0.jar/!META-INF/versions/9/module-info.class
exports org.apache.logging.log4j
exports org.apache.logging.log4j.message
exports org.apache.logging.log4j.simple
exports org.apache.logging.log4j.spi
exports org.apache.logging.log4j.status
exports org.apache.logging.log4j.util
requires java.base mandated
uses org.apache.logging.log4j.message.ThreadDumpMessage$ThreadInfoFactory
uses org.apache.logging.log4j.spi.Provider
uses org.apache.logging.log4j.util.PropertySource
因此,如果將module-info.java
更改為:
/**
* @author Tapas Bose
*/
module project {
exports com.mycompany.tbe.myproject;
requires org.apache.logging.log4j;
}
Eclipse Java編輯器開始在文件module-info.java
顯示編譯錯誤:
同樣在使用log4j-api軟件包的其他Java類中:
但是mvn clean package
在這種情況下可以顯示警告消息:
[WARNING] ********************************************************************************************************************
[WARNING] * Required filename-based automodules detected. Please don't publish this project to a public artifact repository! *
[WARNING] ********************************************************************************************************************
我正在使用:
在另一個SO線程中: 找不到Spring Boot模塊錯誤 ,要求它清除Maven的本地存儲庫。 我也嘗試使用mvn clean dependency:purge-local-repository package
做同樣的事情,但是沒有運氣。
問題是log4j-api-2.11.0.jar是一個多發行版jar,在META-INF / versions / 9 / module-info.class中具有module-info.class,該Eclipse尚不支持,請參閱https://bugs.eclipse.org/bugs/show_bug.cgi?id=534624
我能夠以某種方式完成這項工作。 我正在使用JDK 10.0.1
module-info.java
更改為以下幾行: module-info.java
requires log4j.api; requires org.apache.logging.log4j.core;
requires log4j.api; requires org.apache.logging.log4j.core;
我正在使用log4j的2.11.1版本。 import org.apache.logging.log4j.*;
不使用通配符。 因此,他們將其更改為: import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger;
就是這樣,它可以與Maven和Eclipse一起使用。
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