我就是无法运行我的maven spring-boot项目。。。我想我已经试过了互联网上的所有东西。在这一点上我很绝望。
以下是我尝试运行项目时的输出：
olw@candidatis:/var/www/git/miw/tiger/TigerT1$ mvn -e org.springframework.boot:spring-boot-maven-plugin:run
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO]
[INFO] -----------------------< net.candidatis:tierone >-----------------------
[INFO] Building tierone 0.0.1
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] >>> spring-boot-maven-plugin:2.4.1:run (default-cli) > test-compile @ tierone >>>
[INFO]
[INFO] --- maven-resources-plugin:3.2.0:resources (default-resources) @ tierone ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Using 'UTF-8' encoding to copy filtered properties files.
[INFO] Copying 1 resource
[INFO] Copying 2 resources
[INFO] The encoding used to copy filtered properties files have not been set. This means that the same encoding will be used to copy filtered properties files as when copying other filtered resources. This might not be what you want! Run your build with --debug to see which files might be affected. Read more at https://maven.apache.org/plugins/maven-resources-plugin/examples/filtering-properties-files.html
[INFO]
[INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) @ tierone ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 59 source files to /var/www/git/miw/tiger/TigerT1/target/classes
[INFO]
[INFO] --- maven-resources-plugin:3.2.0:testResources (default-testResources) @ tierone ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Using 'UTF-8' encoding to copy filtered properties files.
[INFO] skip non existing resourceDirectory /var/www/git/miw/tiger/TigerT1/src/test/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.8.0:testCompile (default-testCompile) @ tierone ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] <<< spring-boot-maven-plugin:2.4.1:run (default-cli) < test-compile @ tierone <<<
[INFO]
[INFO]
[INFO] --- spring-boot-maven-plugin:2.4.1:run (default-cli) @ tierone ---
[INFO] Attaching agents: []
Error: LinkageError occurred while loading main class net.candidatis.tierone.TieroneApplication
java.lang.UnsupportedClassVersionError: Preview features are not enabled for net/candidatis/tierone/TieroneApplication (class file version 59.65535). Try running with '--enable-preview'
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 8.449 s
[INFO] Finished at: 2021-04-20T11:35:12+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.4.1:run (default-cli) on project tierone: Application finished with exit code: 1 -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.4.1:run (default-cli) on project tierone: Application finished with exit code: 1
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:64)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:564)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: org.apache.maven.plugin.MojoExecutionException: Application finished with exit code: 1
at org.springframework.boot.maven.RunMojo.runWithForkedJvm (RunMojo.java:101)
at org.springframework.boot.maven.AbstractRunMojo.doRunWithForkedJvm (AbstractRunMojo.java:296)
at org.springframework.boot.maven.AbstractRunMojo.run (AbstractRunMojo.java:261)
at org.springframework.boot.maven.AbstractRunMojo.execute (AbstractRunMojo.java:233)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:64)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:564)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
[ERROR]
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
我的pom.xml文件
<properties>
<java.version>15</java.version>
</properties>
.
.
.
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<release>15</release> <!-- <release>13/14/15</release> -->
<compilerArgs>--enable-preview</compilerArgs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>3.0.0-M3</version>
<configuration>
<argLine>--enable-preview</argLine>
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
我添加了maven环境变量maven_OPTS＝"--启用预览"；到PATH。
olw@candidatis:/var/www/git/miw/tiger/TigerT1$ echo $MAVEN_OPTS
--enable-preview
我创建了
我在我的项目.mvn子文件夹中创建了一个jvm.config文件
olw@candidatis:/var/www/git/miw/tiger/TigerT1/.mvn$ cat jvm.config
--enable-preview
Maven使用Java 15
olw@candidatis:/var/www/git/miw/tiger/TigerT1$ mvn -version
Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: /opt/apache-maven-3.6.3
Java version: 15.0.2, vendor: Oracle Corporation, runtime: /usr/lib/jvm/java-15-oracle
Default locale: de_AT, platform encoding: UTF-8
OS name: "linux", version: "4.2.0-42-generic", arch: "amd64", family: "unix"
我的JAVA_HOME变量指向这个库
olw@candidatis:/var/www/git/miw/tiger/TigerT1$ echo $JAVA_HOME
/usr/lib/jvm/java-15-oracle
所有在我的路径：
olw@candidatis:/var/www/git/miw/tiger/TigerT1$ echo $PATH
/usr/lib/jvm/java-15-oracle/bin/java:/opt/apache-maven-3.6.3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
我找到的所有解决方案都只是关于我已经做了什么。
有人能帮我吗？
问候。。。
我怀疑Maven的jvm.config不起作用的原因是这些参数适用于运行Maven的JVM，但Spring Boot的run目标是在没有这些参数的情况下派生一个新的JVM进程。
您可以使用fork配置属性禁用分叉，使您的应用程序与Maven在同一JVM中运行，也可以为分叉进程指定jvmArguments。
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
...
</excludes>
<fork>false</fork><!-- jvmArguments OR this, but not both -->
<jvmArguments>--enable-preview</jvmArguments>
</configuration>
</plugin>
提供了这两个属性以及其他可能有用的属性的文档