很有可能是log4j，没有写入文件的权限，报错如下：
报错现场
main ERROR Cannot access RandomAccessFile java.io.FileNotFoundException: xxx.log (Permission denied) java.io.FileNotFoundException:xxx.log (Permission denied) at java.io.RandomAccessFile.open0(Native Method) at java.io.RandomAccessFile.open(RandomAccessFile.java:316) at java.io.RandomAccessFile.(RandomAccessFile.java:243) at java.io.RandomAccessFile.(RandomAccessFile.java:124) at org.apache.logging.log4j.core.appender.rolling.RollingRandomAccessFileManager
RollingRandomAccessFileManagerFactory.createManager(RollingRandomAccessFileManager.java:182)atorg.apache.logging.log4j.core.appender.rolling.RollingRandomAccessFileManagerRollingRandomAccessFileManagerFactory.createManager(RollingRandomAccessFileManager.java:155) at org.apache.logging.log4j.core.appender.AbstractManager.getManager(AbstractManager.java:112) at org.apache.logging.log4j.core.appender.OutputStreamManager.getManager(OutputStreamManager.java:114) at org.apache.logging.log4j.core.appender.rolling.RollingRandomAccessFileManager.getRollingRandomAccessFileManager(RollingRandomAccessFileManager.java:86) at org.apache.logging.log4j.core.appender.RollingRandomAccessFileAppender.createAppender(RollingRandomAccessFileAppender.java:212) 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.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:132) at org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:942) at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:882) at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:874) at org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:498) at org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:227) at org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:239) at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:530) at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:258) at org.apache.logging.log4j.core.async.AsyncLoggerContext.start(AsyncLoggerContext.java:87) at org.springframework.boot.logging.log4j2.Log4J2LoggingSystem.loadConfiguration(Log4J2LoggingSystem.java:176) at org.springframework.boot.logging.log4j2.Log4J2LoggingSystem.loadConfiguration(Log4J2LoggingSystem.java:167) at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithSpecificConfig(AbstractLoggingSystem.java:66) at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java:56) at org.springframework.boot.logging.log4j2.Log4J2LoggingSystem.initialize(Log4J2LoggingSystem.java:148) at org.springframework.boot.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:308) at org.springframework.boot.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:276) at org.springframework.boot.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:239) at org.springframework.boot.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:212) at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:167) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:122) at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:73) at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54) at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:336) at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) 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.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51)
2019-05-06 14:22:22,223 main ERROR Unable to invoke factory method in class class org.apache.logging.log4j.core.appender.RollingRandomAccessFileAppender for element RollingRandomAccessFile. java.lang.reflect.InvocationTargetException 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.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:132) at org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:942) at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:882) at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:874) at org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:498) at org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:227) at org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:239) at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:530) at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:258) at org.apache.logging.log4j.core.async.AsyncLoggerContext.start(AsyncLoggerContext.java:87) at org.springframework.boot.logging.log4j2.Log4J2LoggingSystem.loadConfiguration(Log4J2LoggingSystem.java:176) at org.springframework.boot.logging.log4j2.Log4J2LoggingSystem.loadConfiguration(Log4J2LoggingSystem.java:167) at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithSpecificConfig(AbstractLoggingSystem.java:66) at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java:56) at org.springframework.boot.logging.log4j2.Log4J2LoggingSystem.initialize(Log4J2LoggingSystem.java:148) at org.springframework.boot.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:308) at org.springframework.boot.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:276) at org.springframework.boot.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:239) at org.springframework.boot.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:212) at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:167) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:122) at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:73) at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54) at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:336) at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) 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.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51) at org.apache.logging.log4j.core.appender.AbstractManager.getManager(AbstractManager.java:114) at org.apache.logging.log4j.core.appender.OutputStreamManager.getManager(OutputStreamManager.java:114) at org.apache.logging.log4j.core.appender.rolling.RollingRandomAccessFileManager.getRollingRandomAccessFileManager(RollingRandomAccessFileManager.java:86) at org.apache.logging.log4j.core.appender.RollingRandomAccessFileAppender.createAppender(RollingRandomAccessFileAppender.java:212) … 41 more
2019-05-06 14:22:22,237 main ERROR Null object returned for RollingRandomAccessFile in Appenders. 2019-05-06 14:22:22,243 main ERROR Unable to locate appender “File” for logger config “root”
问题解决
看样子是权限不够，查看下该日志文件所属用户发现为root，而启动应用使用的是其他xx用户，所以，需要将其改为 其他xx用户 chown xx logfile.log //修改logfile.log文件拥有者为 xx
或者修改文件权限也可以，但是相比较而言，前者更舒服。
