[DEBUG] incrementalBuildHelper#afterRebuildExecution [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] ------------------------------------------------------------- [ERROR] /D:/git/springboot_mybatisplus/src/main/java/io/z77z/tio/server/BarrageServerStarter.java:[19,140] -source 1.6 中不支持 diamond 运算符 (请使用 -source 7 或更高版本以启用 diamond 运算符) [ERROR] /D:/git/springboot_mybatisplus/src/main/java/io/z77z/tio/server/HttpRequestDecoder.java:[40,59] -source 1.6 中不支持 diamond 运算符 (请使用 -source 7 或更高版本以启用 diamond 运算符) [ERROR] /D:/git/springboot_mybatisplus/src/main/java/io/z77z/tio/server/WebsocketPacket.java:[36,74] -source 1.6 中不支持 diamond 运算符 (请使用 -source 7 或更高版本以启用 diamond 运算符) [ERROR] /D:/git/springboot_mybatisplus/src/main/java/io/z77z/tio/server/BarrageServerHandler.java:[22,82] -source 1.6 中不支持 diamond 运算符 (请使用 -source 7 或更高版本以启用 diamond 运算符) [ERROR] /D:/git/springboot_mybatisplus/src/main/java/io/z77z/tio/handlers/HandshakeReqHandler.java:[70,71] -source 1.6 中不支持 diamond 运算符 (请使用 -source 7 或更高版本以启用 diamond 运算符) [INFO] 5 errors [INFO] ------------------------------------------------------------- [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 1.880 s [INFO] Finished at: 2017-09-22T15:29:49+08:00 [GC (System.gc()) 35046K->22751K(336896K), 0.0137723 secs] [Full GC (System.gc()) 22751K->20475K(336896K), 0.0968946 secs] [INFO] Final Memory: 24M/329M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project mybatisplus-spring-boot: Compilation failure: Compilation failure: [ERROR] /D:/git/springboot_mybatisplus/src/main/java/io/z77z/tio/server/BarrageServerStarter.java:[19,140] -source 1.6 中不支持 diamond 运算符 [ERROR] (请使用 -source 7 或更高版本以启用 diamond 运算符) [ERROR] /D:/git/springboot_mybatisplus/src/main/java/io/z77z/tio/server/HttpRequestDecoder.java:[40,59] -source 1.6 中不支持 diamond 运算符 [ERROR] (请使用 -source 7 或更高版本以启用 diamond 运算符) [ERROR] /D:/git/springboot_mybatisplus/src/main/java/io/z77z/tio/server/WebsocketPacket.java:[36,74] -source 1.6 中不支持 diamond 运算符 [ERROR] (请使用 -source 7 或更高版本以启用 diamond 运算符) [ERROR] /D:/git/springboot_mybatisplus/src/main/java/io/z77z/tio/server/BarrageServerHandler.java:[22,82] -source 1.6 中不支持 diamond 运算符 [ERROR] (请使用 -source 7 或更高版本以启用 diamond 运算符) [ERROR] /D:/git/springboot_mybatisplus/src/main/java/io/z77z/tio/handlers/HandshakeReqHandler.java:[70,71] -source 1.6 中不支持 diamond 运算符 [ERROR] (请使用 -source 7 或更高版本以启用 diamond 运算符) [ERROR] -> [Help 1] org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project mybatisplus-spring-boot: Compilation failure at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80) at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288) at org.apache.maven.cli.MavenCli.main(MavenCli.java:199) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) Caused by: org.apache.maven.plugin.compiler.CompilationFailureException: Compilation failure at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:858) at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:129) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207) ... 20 more [ERROR] [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
大致的问题就是编译的时候JDK用的1.6 版本低导致
解决方案
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
1.7 JDK的版本号