这是在基于 maven 编写java项目的时候，使用 mvn install 时发生的异常，异常信息如下
[源文件的搜索路径: /Users/Frank/workspace-java/project/app-web/src/main/java,/Users/Frank/workspace-java/project/app-web/target/generated-sources/annotations] [类文件的搜索路径: 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致命错误: 在类路径或引导类路径中找不到程序包 java.lang [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] ------------------------------------------------------------- [ERROR] An unknown compilation problem occurred [INFO] 1 error [INFO] ------------------------------------------------------------- [INFO] ------------------------------------------------------------------------ [INFO] Reactor Summary: [INFO] [INFO] Projects :: APP :: Parent ........................... SUCCESS [ 0.357 s] [INFO] Projects :: APP :: Utils ............................ SUCCESS [ 1.257 s] [INFO] Projects :: APP :: Configs .......................... SUCCESS [ 0.374 s] [INFO] Projects :: APP :: Dao .............................. SUCCESS [ 0.172 s] [INFO] Projects :: APP :: Service .......................... SUCCESS [ 0.152 s] [INFO] Projects :: APP :: Admin ............................ SUCCESS [ 1.273 s] [INFO] Projects :: APP :: Web .............................. FAILURE [ 0.081 s] [INFO] xxx ................................................. SKIPPED [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 5.426 s [INFO] Finished at: 2016-07-22T21:26:15+08:00 [INFO] Final Memory: 39M/310M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.2:compile (default-compile) on project app-web: Compilation failure [ERROR] An unknown compilation problem occurred [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/MojoFailureException [ERROR] [ERROR] After correcting the problems, you can resume the build with the command [ERROR] mvn -rf :app-web 原因
原因在于 compiler 插件的配置。
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId> <version>${maven.compiler.version}</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target> <encoding>${project.build.sourceEncoding}</encoding> <showWarnings>true</showWarnings>
<compilerArguments>
<verbose />
<!-- 这个配置很特殊：windows下使用分号（;）分隔，linux/mac下使用冒号（:）分隔 --> <bootclasspath>${java.home}/lib/rt.jar;${java.home}/lib/jce.jar</bootclasspath> </compilerArguments>
</configuration>
</plugin> <!-- ... --> 配置中14行的分隔符问题，在windows下使配置中分隔符问题，在windows下使用maven 应该使用分号（;）分隔，linux/mac 下使用（:）分隔。