. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.4.3)
2021-03-04 10:22:05.930 INFO 31377 --- [ main] c.loyin.solar.SolarApplication : Starting SolarApplication using Java 1.8.0_261 on lareinadeiMac.local with PID 31377 (/Users/liushengfeng/workspace/solar_monitor/solar_server_sb/target/classes started by liushengfeng in /Users/liushengfeng/workspace/solar_monitor/solar_server_sb)
2021-03-04 10:22:05.933 INFO 31377 --- [ main] c.loyin.solar.SolarApplication : No active profile set, falling back to default profiles: default
2021-03-04 10:22:06.680 WARN 31377 --- [ main] io.undertow.websockets.jsr : UT026010: Buffer pool was not set on WebSocketDeploymentInfo, the default pool will be used
2021-03-04 10:22:06.697 INFO 31377 --- [ main] io.undertow.servlet : Initializing Spring embedded WebApplicationContext
2021-03-04 10:22:06.700 INFO 31377 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 690 ms
2021-03-04 10:22:06.861 INFO 31377 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2021-03-04 10:22:06.997 INFO 31377 --- [ main] io.undertow : starting server: Undertow - 2.2.4.Final
2021-03-04 10:22:07.004 INFO 31377 --- [ main] org.xnio : XNIO version 3.8.0.Final
2021-03-04 10:22:07.011 INFO 31377 --- [ main] org.xnio.nio : XNIO NIO Implementation Version 3.8.0.Final
2021-03-04 10:22:07.081 INFO 31377 --- [ main] org.jboss.threads : JBoss Threads version 3.1.0.Final
2021-03-04 10:22:07.138 INFO 31377 --- [ main] o.s.b.w.e.undertow.UndertowWebServer : Undertow started on port(s) 8080 (http)
2021-03-04 10:22:07.148 INFO 31377 --- [ main] c.loyin.solar.SolarApplication : Started SolarApplication in 1.58 seconds (JVM running for 1.887)在構建一個空spring-boot項目時，從日誌看出運行時間太久。
日誌如下：
2021-03-04 10:20:27.945 WARN 31120 --- [ main] o.s.boot.StartupInfoLogger : InetAddress.getLocalHost().getHostName() took 5001 milliseconds to respond. Please verify your network configuration (macOS machines may need to add entries to /etc/hosts).
....
2021-03-04 10:20:34.146 INFO 31120 --- [ main] o.s.b.w.e.undertow.UndertowWebServer : Undertow started on port(s) 8080 (http)
2021-03-04 10:20:34.154 INFO 31120 --- [ main] c.loyin.solar.SolarApplication : Started SolarApplication in 21.578 seconds (JVM running for 22.05)
從第一條日誌可以看出是hots解析的問題。
解決方法如下：
hostname #查看當前hostname編輯hosts
sudo vim /etc/hosts將上面hostsname配置到hosts
127.0.0.1 localhost lareinadeiMac.local
::1 localhost lareinadeiMac.local重新運行spring-boot程序
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.4.3)
2021-03-04 10:22:05.930 INFO 31377 --- [ main] c.loyin.solar.SolarApplication : Starting SolarApplication using Java 1.8.0_261 on lareinadeiMac.local with PID 31377 (/Users/liushengfeng/workspace/solar_monitor/solar_server_sb/target/classes started by liushengfeng in /Users/liushengfeng/workspace/solar_monitor/solar_server_sb)
2021-03-04 10:22:05.933 INFO 31377 --- [ main] c.loyin.solar.SolarApplication : No active profile set, falling back to default profiles: default
2021-03-04 10:22:06.680 WARN 31377 --- [ main] io.undertow.websockets.jsr : UT026010: Buffer pool was not set on WebSocketDeploymentInfo, the default pool will be used
2021-03-04 10:22:06.697 INFO 31377 --- [ main] io.undertow.servlet : Initializing Spring embedded WebApplicationContext
2021-03-04 10:22:06.700 INFO 31377 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 690 ms
2021-03-04 10:22:06.861 INFO 31377 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2021-03-04 10:22:06.997 INFO 31377 --- [ main] io.undertow : starting server: Undertow - 2.2.4.Final
2021-03-04 10:22:07.004 INFO 31377 --- [ main] org.xnio : XNIO version 3.8.0.Final
2021-03-04 10:22:07.011 INFO 31377 --- [ main] org.xnio.nio : XNIO NIO Implementation Version 3.8.0.Final
2021-03-04 10:22:07.081 INFO 31377 --- [ main] org.jboss.threads : JBoss Threads version 3.1.0.Final
2021-03-04 10:22:07.138 INFO 31377 --- [ main] o.s.b.w.e.undertow.UndertowWebServer : Undertow started on port(s) 8080 (http)
2021-03-04 10:22:07.148 INFO 31377 --- [ main] c.loyin.solar.SolarApplication : Started SolarApplication in 1.58 seconds (JVM running for 1.887)結果對比：
從啓動22秒到1.58秒