相关疑难解决方法(0)

我有一台安装了JDK&JRE 6和7的Jenkins服务器.

所有项目都建立在1.6上,除了1.7依赖项目.

我已经将maven pom文件配置为使用JAVA_HOME_7环境PATH中的Java编译器.

<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.0</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                    <showDeprecation>true</showDeprecation>
                    <showWarnings>true</showWarnings>
                    **<executable>${env.JAVA_HOME_7}/bin/javac</executable>**
                    <fork>true</fork>
                    <verbose>false</verbose>
                </configuration>
            </plugin>

在mvn安装期间,我收到以下错误:

java.lang.RuntimeException: There was an error in the forked process
java.lang.UnsupportedClassVersionError: : Unsupported major.minor version 51.0

我认为这意味着服务器正在使用JRE 1.6.

如何将JRE 1.6与1.7保持在一起以保持与旧1.6项目和新1.7项目的兼容性？

非常感谢,Atanas

我想在我的项目上运行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 …

我在我们的应用服务器上运行Junits,该服务器因不支持的major.minor版本51.0而失败.但是,Web应用程序然后构建,部署和运行正常.我不明白这是怎么发生的.我的maven编译器的配置如下所示:

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-compiler-plugin</artifactId> 
  <version>2.3.2</version>
  <configuration>
    <verbose>true</verbose>
    <fork>true</fork>
    <source>1.7</source>
    <target>1.7</target>
    <executable>${JAVA_1_7_HOME}/bin/javac</executable>
    <encoding>ISO-8859-1</encoding>
    <verbose>true</verbose> 
  </configuration>
</plugin>

而我的Junit依赖:

<dependency>
  <groupId>junit</groupId>
  <artifactId>junit</artifactId>
  <scope>test</scope>
  <version>4.10</version>
</dependency> 

任何人都可以想到这是失败的原因吗？