maven 不再支持源选项 1.5。请使用 1.6 或更高版本。

eclispe 在新建了个项目，在执行Maven Projects下的clean以及compile命令时，报了如下错误：

[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent! [INFO] Compiling 11 source files to D:JAVAJavaWorkspaceIdeaProjects est2 argetclasses [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] ------------------------------------------------------------- [ERROR] 不再支持源选项 1.5。请使用 1.6 或更高版本。 [ERROR] 不再支持目标选项 1.5。请使用 1.6 或更高版本。 [INFO] 2 errors [INFO] ------------------------------------------------------------- [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 53.286 s [INFO] Finished at: 2017-10-18T17:29:36+08:00 [INFO] Final Memory: 10M/35M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project test: Compilation failure: Compilation failure: [ERROR] 不再支持源选项 1.5。请使用 1.6 或更高版本。 [ERROR] 不再支持目标选项 1.5。请使用 1.6 或更高版本。 [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

解决方法是：