java - 如何记录spring boot jar文件异常

Question

当您创建 Tomcat 嵌入式 JAR 文件并将其安装在服务器上时，如何访问异常？最近我的服务器和进程突然停止，我不知道发生了什么。我检查了 Windows 事件查看器，但找不到任何东西。是否有异常写入文件的地方？

Answer 1

By default, Spring Boot will only log to the console and will not write log files. If you want to write log files in addition to the console output you need to set a logging.file or logging.path property (for example in your application.properties).

java -Dlogging.file=target/my_logfile.log -jar spring_boot_app.jar
or 
java -Dlogging.path=target/logs -jar spring_boot_app.jar
(Will create spring.log file inside target/logs)

引用:http://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-logging.html#boot-features-logging-file-output

为了使生活更轻松，您可以使用 logback.xml 或 logback-spring.xml

以下是 logback.xml 的示例。将其包含在 src/main/resources 目录中。

<?xml version="1.0" encoding="UTF-8"?>

<configuration scan="true">
    <include resource="org/springframework/boot/logging/logback/base.xml"/>

<!-- The FILE and ASYNC appenders are here as examples for a production configuration -->

    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>logFile.%d{yyyy-MM-dd}.log</fileNamePattern>
            <maxHistory>90</maxHistory>
        </rollingPolicy>
        <encoder>
            <charset>utf-8</charset>
            <Pattern>%d %-5level [%thread] %logger{0}: %msg%n</Pattern>
        </encoder>
    </appender>

    <appender name="ASYNC" class="ch.qos.logback.classic.AsyncAppender">
        <queueSize>512</queueSize>
        <appender-ref ref="FILE"/>
    </appender>


    <!-- your project package -->
    <logger name="com.test" level="INFO"/>

    <!-- <logger name="javax.activation" level="WARN"/>
    <logger name="javax.mail" level="WARN"/>
    <logger name="javax.xml.bind" level="WARN"/>
    <logger name="ch.qos.logback" level="WARN"/>
    <logger name="com.codahale.metrics" level="WARN"/>
    <logger name="com.ryantenney" level="WARN"/>
    <logger name="com.sun" level="WARN"/>
    <logger name="com.zaxxer" level="WARN"/>
    <logger name="io.undertow" level="WARN"/>
    <logger name="io.undertow.websockets.jsr" level="ERROR"/>
    <logger name="org.apache" level="WARN"/>
    <logger name="org.apache.catalina.startup.DigesterFactory" level="OFF"/>
    <logger name="org.bson" level="WARN"/>
    <logger name="org.hibernate.validator" level="WARN"/>
    <logger name="org.hibernate" level="WARN"/>
    <logger name="org.hibernate.ejb.HibernatePersistence" level="OFF"/>
    <logger name="org.springframework" level="WARN"/>
    <logger name="org.springframework.web" level="WARN"/>
    <logger name="org.springframework.security" level="WARN"/>
    <logger name="org.springframework.cache" level="WARN"/>
    <logger name="org.thymeleaf" level="WARN"/>
    <logger name="org.xnio" level="WARN"/>
    <logger name="springfox" level="WARN"/>
    <logger name="sun.rmi" level="WARN"/>
    <logger name="liquibase" level="WARN"/>
    <logger name="LiquibaseSchemaResolver" level="INFO"/>
    <logger name="sun.rmi.transport" level="WARN"/> -->

    <contextListener class="ch.qos.logback.classic.jul.LevelChangePropagator">
        <resetJUL>true</resetJUL>
    </contextListener>

    <root level="INFO">
        <appender-ref ref="CONSOLE"/>
        <appender-ref ref="FILE"/>
    </root>

</configuration>

以上配置将生成日志到 JAR 文件的工作目录，其名称如 logFile.yyyy.MM.dd.log