Question

我正在尝试对我的项目运行mvn test。项目本身编译和安装，但man测试失败，输出如下：

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.18:test (default-test) on project udms-server: Execution default-test of goal org.apache.maven.plugins:maven-surefire-plugin:2.18:test failed: There was an error in the forked process
[ERROR] java.lang.UnsupportedClassVersionError: some/project/Event : Unsupported major.minor version 52.0
[ERROR] at java.lang.ClassLoader.defineClass1(Native Method)
[ERROR] at java.lang.ClassLoader.defineClass(Unknown Source)
[ERROR] at java.security.SecureClassLoader.defineClass(Unknown Source)
[ERROR] at java.net.URLClassLoader.defineClass(Unknown Source)
[ERROR] at java.net.URLClassLoader.access$100(Unknown Source)
[ERROR] at java.net.URLClassLoader$1.run(Unknown Source)
[ERROR] at java.net.URLClassLoader$1.run(Unknown Source)
[ERROR] at java.security.AccessController.doPrivileged(Native Method)
[ERROR] at java.net.URLClassLoader.findClass(Unknown Source)
[ERROR] at java.lang.ClassLoader.loadClass(Unknown Source)
[ERROR] at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
[ERROR] at java.lang.ClassLoader.loadClass(Unknown Source)
[ERROR] at java.lang.ClassLoader.defineClass1(Native Method)
[ERROR] at java.lang.ClassLoader.defineClass(Unknown Source)
[ERROR] at java.security.SecureClassLoader.defineClass(Unknown Source)
[ERROR] at java.net.URLClassLoader.defineClass(Unknown Source)
[ERROR] at java.net.URLClassLoader.access$100(Unknown Source)
[ERROR] at java.net.URLClassLoader$1.run(Unknown Source)
[ERROR] at java.net.URLClassLoader$1.run(Unknown Source)
[ERROR] at java.security.AccessController.doPrivileged(Native Method)
[ERROR] at java.net.URLClassLoader.findClass(Unknown Source)
[ERROR] at java.lang.ClassLoader.loadClass(Unknown Source)
[ERROR] at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
[ERROR] at java.lang.ClassLoader.loadClass(Unknown Source)
[ERROR] at org.apache.maven.surefire.util.DefaultScanResult.loadClass(DefaultScanResult.java:131)
[ERROR] at org.apache.maven.surefire.util.DefaultScanResult.applyFilter(DefaultScanResult.java:95)
[ERROR] at org.apache.maven.surefire.junit4.JUnit4Provider.scanClassPath(JUnit4Provider.java:194)
[ERROR] at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:92)
[ERROR] at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:203)
[ERROR] at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:155)
[ERROR] at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[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/PluginExecutionException

我认为某些/项目是用Java 8编译的......所以我将当前的项目改为使用Java 8而不是7。由于这些问题，我倾向于认为这有关：

Can't fix Unsupported major.minor version 52.0 even after fixing compatibility

Unsupported major.minor version 52.0

现在我完全卡住了:(

Answer 1

JVM应在插件配置中明确设置。

  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.19.1</version>
    <configuration>
      <jvm>${env.JAVA_HOME}/bin/java</jvm>
    </configuration>
  </plugin>

Answer 2

确保版本的Maven运行时＆gt; = JRE 1.8。

如果在控制台中执行 mvn 命令，则在控制台中运行 java -version 以检查版本。或者，如果在IDE中执行maven，则在IDE中更改maven JRE。

UnsupportedClassVersionError:

当Java虚拟机尝试读取类文件时抛出确定文件中的主要版本号和次要版本号不支持。

Answer 3

似乎我没有在Eclipse中更新我的Maven（右键单击项目 - ＆gt; Maven - ＆gt;更新项目......）或在Window中选择了JDK 8 - ＆gt;偏好 - ＆gt; Java - ＆gt;编译器选项。完成这两项工作后，一切都完美无缺：）

由于Surefire JDK版本，mvn测试失败了吗？

3 个答案: