SoFunction
Updated on 2025-03-08

Springboot cannot load problem

Springboot cannot load

Phenomenon

After the SpringBoot project is started, the log file does not appear in the specified directory.

And the start log starts as follows:

"C:\Program Files\Java\jdk1.8.0_144\bin\java"...
Connected to the target VM, address: '127.0.0.1:52494', transport: 'socket'
18:34:58,011 |-INFO in [default] - Could NOT find resource []
18:34:58,011 |-INFO in [default] - Could NOT find resource []
18:34:58,011 |-INFO in [default] - Found resource [] at [jar:file:/D:/mvn_repo/xxx-1.0.!/]
18:34:58,014 |-INFO in @707194ba - URL [jar:file:/D:/mvn_repo/yyy-1.0.!/] is not of type file
18:34:58,112 |-INFO in - Will scan for changes in [jar:file:/D:/mvn_repo/zzz-1.0.!/] 

The file has not been changed, as follows:

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

    <springProperty scope="context" name="logPath" source=""/>
    <springProperty scope="context" name="logLevel" source=""/>


    <appender name="consoleLog" class="">
        <layout class="">
            <pattern> %d{yyyy-MM-dd HH:mm:} %-5level [%thread] %logger{36} %line - %msg%n</pattern>
        </layout>
    </appender>

    <appender name="fileLog" class="">
        <!--Scrolling strategy-->
        <rollingPolicy class="">
            <!--Output path-->
            <fileNamePattern>${logPath}/server.%</fileNamePattern>
        </rollingPolicy>
        <encoder>
            <pattern> %d{yyyy-MM-dd HH:mm:} %-5level [%thread] %logger{36} %line - %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>

    <appender name="fileErrorLog" class="">
        <filter class="">
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <!--Scrolling strategy-->
        <rollingPolicy class="">
            <!--Output path-->
            <fileNamePattern>${logPath}/server.%</fileNamePattern>
        </rollingPolicy>
        <encoder>
            <pattern> %d{yyyy-MM-dd HH:mm:} %-5level [%thread] %logger{36} %line - %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>
    </appender>

    <root level="${logLevel}">
        <appender-ref ref="consoleLog"/>
        <appender-ref ref="fileLog"/>
        <appender-ref ref="fileErrorLog"/>
    </root>
</Configuration>

Cause analysis

1. The configuration file location is correct

classes/
├── 
├── com
│   └── nero
│       └── test
│           ├── api
│           │   ├──

2. Analyze the startup log, analyze the problem caused by the configuration in the dependency jar, which may be caused by conflicts.

Solution

Add configuration to:

=classpath:

Through this configuration, the configuration file forcing the log is specified, and the problem is solved

springboot configuration, using configurations in different configuration files

spring:
  profiles:
    active: prod  # active Which configuration file

logging:
  file:
    path: d:/var/log

logging:
  file:
    path: /var/log/question

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="60 seconds" debug="false">
    <contextName>wechat-service</contextName>
    <!-- !!!!!!!!!Get application-{xxx}.yml Configuration !!!!!-->
    <springProperty scope="context" name="" source=""/>
    <!--<property name="" value="log" />-->
    <property name="" value="15" />
    <property name="" value="%d{yyyy-MM-dd HH:mm:ss} | %highlight(%-5level) | %boldYellow(%thread) | %boldGreen(%logger) | %msg%n"/>
    <property name="" value="%d{yyyy-MM-dd HH:mm:} %contextName [%thread] %-5level %logger{36} - %msg%n" />
    <!--Output to console-->
    <appender name="console" class="">
        <encoder>
            <pattern>${}</pattern>
        </encoder>
    </appender>
    <!--Output to file info Level log-->
    <appender name="file_info" class="">
        <rollingPolicy class="">
            <fileNamePattern>${}/info/info.%d{yyyy-MM-dd}.log</fileNamePattern>
            <MaxHistory>${}</MaxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>${}</pattern>
        </encoder>
        <filter class="">
            <level>INFO</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>
    <!--Output to file error Level log-->
    <appender name="file_error" class="">
        <rollingPolicy class="">
            <fileNamePattern>${}/error/error.%d{yyyy-MM-dd}.log</fileNamePattern>
        </rollingPolicy>
        <encoder>
            <pattern>${}</pattern>
        </encoder>
        <filter class="">
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>
    <root level="debug">
        <appender-ref ref="console" />
    </root>
    <root level="info">
        <appender-ref ref="file_info" />
        <appender-ref ref="file_error" />
    </root>

</configuration>

Get configuration from

<springProperty scope="context" name="" source=""/>

Summarize

The above is personal experience. I hope you can give you a reference and I hope you can support me more.