log4j2 spring 引导查找无法从 application.properties 读取 属性
log4j2 spring boot lookup can't read property from application.properties
我希望 log4j2-spring.xml 从 application.properties 文件中读取 属性。但似乎 log4j2-spring.xml 无法读取它。我已阅读 https://logging.apache.org/log4j/2.x/manual/lookups.html#SpringLookup 来实现这一点。
我在这个网站上看到了。也试过这样。但这对我没有帮助。
我的build.gradle是这样的：
plugins {
id 'org.springframework.boot' version '2.5.0-SNAPSHOT'
id 'io.spring.dependency-management' version '1.0.11.RELEASE'
id 'java'
}
group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'
repositories {
mavenCentral()
maven { url 'https://repo.spring.io/milestone' }
maven { url 'https://repo.spring.io/snapshot' }
}
ext {
log4j2version = '2.14.1'
}
dependencies {
compileOnly 'org.projectlombok:lombok:1.18.18'
annotationProcessor 'org.projectlombok:lombok:1.18.18'
implementation 'org.springframework.boot:spring-boot-starter'
implementation 'org.springframework.boot:spring-boot-starter-log4j2'
implementation "org.apache.logging.log4j:log4j-spring-cloud-config-client:${log4j2version}"
implementation "org.apache.logging.log4j:log4j-api:${log4j2version}"
implementation "org.apache.logging.log4j:log4j-core:${log4j2version}"
}
configurations {
all {
exclude group: 'org.springframework.boot', module: 'spring-boot-starter-logging'
exclude group: "ch.qos.logback", module: "logback-classic"
exclude group: "org.springframework.cloud", module: "spring-cloud-bus"
}
}
application.properties 文件是：
commission.base.path1=C:/Users/user1/Downloads/demo1
logging.config=classpath:log4j2-spring.xml
spring.cloud.config.enabled=false
log4j2-spring.xml是这样的：
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<Appenders>
<Console name="console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss:SSS} [%thread] %-5level %logger{2}:%L - %msg%n"/>
</Console>
<RollingFile name="CATALINA-FILE" fileName="$${spring:commission.base.path1}/logs/catalina.log"
filePattern="$${spring:commission.base.path1}/logs/archived/catalina_%d{yyyy-MM-dd}.log.gz">
<PatternLayout>
<Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{20}:%L - %msg%n</Pattern>
</PatternLayout>
<Policies>
<TimeBasedTriggeringPolicy interval="1"/>
<SizeBasedTriggeringPolicy size="1 GB" />
</Policies>
</RollingFile>
</Appenders>
<Loggers>
<root level="debug">
<appender-ref ref="CATALINA-FILE"/>
<appender-ref ref="console"/>
</root>
</Loggers>
</configuration>
但每次我 运行 代码时，我都会收到此异常：
2021-05-21 21:28:38,409 main ERROR Unable to create file ${spring:commission.base.path1}/logs/catalina.log java.io.IOException: The filename, directory name, or volume label syntax is incorrect
at java.io.WinNTFileSystem.canonicalize0(Native Method)
at java.io.WinNTFileSystem.canonicalize(WinNTFileSystem.java:428)
at java.io.File.getCanonicalPath(File.java:618)
at java.io.File.getCanonicalFile(File.java:643)
at org.apache.logging.log4j.core.util.FileUtils.makeParentDirs(FileUtils.java:135)
at org.apache.logging.log4j.core.appender.rolling.RollingFileManager$RollingFileManagerFactory.createManager(RollingFileManager.java:720)
at org.apache.logging.log4j.core.appender.rolling.RollingFileManager$RollingFileManagerFactory.createManager(RollingFileManager.java:704)
at org.apache.logging.log4j.core.appender.AbstractManager.getManager(AbstractManager.java:113)
at org.apache.logging.log4j.core.appender.OutputStreamManager.getManager(OutputStreamManager.java:100)
at org.apache.logging.log4j.core.appender.rolling.RollingFileManager.getFileManager(RollingFileManager.java:217)
at org.apache.logging.log4j.core.appender.RollingFileAppender$Builder.build(RollingFileAppender.java:146)
at org.apache.logging.log4j.core.appender.RollingFileAppender$Builder.build(RollingFileAppender.java:62)
at org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:122)
at org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:1000)
at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:940)
at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:932)
at org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:551)
at org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:241)
at org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:287)
at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:627)
at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:304)
at org.apache.logging.log4j.spring.boot.Log4j2CloudConfigLoggingSystem.loadConfiguration(Log4j2CloudConfigLoggingSystem.java:123)
at org.springframework.boot.logging.log4j2.Log4J2LoggingSystem.loadConfiguration(Log4J2LoggingSystem.java:181)
at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithConventions(AbstractLoggingSystem.java:80)
at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java:60)
at org.springframework.boot.logging.log4j2.Log4J2LoggingSystem.initialize(Log4J2LoggingSystem.java:163)
at org.apache.logging.log4j.spring.boot.Log4j2CloudConfigLoggingSystem.initialize(Log4j2CloudConfigLoggingSystem.java:80)
at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:312)
at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:281)
at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:239)
at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:216)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131)
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:82)
at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared(SpringApplicationRunListeners.java:63)
at java.util.ArrayList.forEach(ArrayList.java:1259)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:117)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:111)
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:62)
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:373)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:331)
at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:144)
at org.springframework.cloud.bootstrap.BootstrapApplicationListener.bootstrapServiceContext(BootstrapApplicationListener.java:212)
at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:117)
at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:74)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131)
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:82)
at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared(SpringApplicationRunListeners.java:63)
at java.util.ArrayList.forEach(ArrayList.java:1259)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:117)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:111)
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:62)
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:373)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:331)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1336)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1325)
at com.example.demo1.Demo1Application.main(Demo1Application.java:12)
如何解决这个问题？提前致谢。
问题是您需要在 Spring 云上配置 Log4j 吗？
问题
如果不是，我会说 org.apache.logging.log4j:2.14.1 依赖是一种矫枉过正。它带来了 Spring 您不需要的云依赖项。在某种程度上，我仍然没有弄清楚，它还会干扰 spring-boot-starter-log4j2 导致多次初始化日志上下文，然后作为副作用你在启动时出现此异常，因为 Spring 中的 属性 未解决。
解决方案
请注意，您不需要整个 log4j-spring-cloud-config-client 甚至 spring-boot- starter-log4j2.
以下依赖项将设置您的日志记录上下文：
- log4j
- log4j-slf4j-impl
- log4j-spring-引导
我放了一个example program in GitHub repository。变量名称略有更改，并且有注释解释每个依赖项的用途。
Gradle 构建文件的摘录
dependencies {
compileOnly 'org.projectlombok:lombok:1.18.18'
annotationProcessor 'org.projectlombok:lombok:1.18.18'
// Spring Boot dependency
implementation 'org.springframework.boot:spring-boot-starter'
testImplementation 'org.springframework.boot:spring-boot-starter-test'
// Logging dependencies
// Base Log4j 2
implementation "org.apache.logging.log4j:log4j-api:${log4j2version}"
// Will resolve spring properties
implementation "org.apache.logging.log4j:log4j-spring-boot:${log4j2version}"
// Log4j 2 to Slf4j binder
implementation "org.apache.logging.log4j:log4j-slf4j-impl:${log4j2version}"
}
Official documentation 应该说 log4j-spring-boot 依赖项足以解析 Spring 配置文件中的查找变量。
但如果您真的需要通过云配置配置 Log4J，那么您必须再次仔细查看依赖项是如何解析的以及您真正需要哪些依赖项。
尝试用这个 $ 代替 $$
fileName="${spring:commission.base.path1}/logs/catalina.log"
filePattern="${spring:commission.base.path1}/logs/archived/catalina_%d{yyyy-MM-dd}.log.gz">
我刚刚添加
implementation "org.apache.logging.log4j:log4j-spring-boot"
在 build.gradle 中，现在正在运行。
实施
implementation 'org.springframework.boot:spring-boot-starter-log4j2'
足以使用 log4j2 版本 2.14.1，因为 spring 引导版本是 2.5.0-SNAPSHOT。无需为此明确添加 org.apache.logging.log4j 的依赖项。
所以我的最终 build.gradle 是：
plugins {
id 'org.springframework.boot' version '2.5.0-SNAPSHOT'
id 'io.spring.dependency-management' version '1.0.11.RELEASE'
id 'java'
}
group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'
repositories {
mavenCentral()
maven { url 'https://repo.spring.io/milestone' }
maven { url 'https://repo.spring.io/snapshot' }
}
dependencies {
compileOnly 'org.projectlombok:lombok:1.18.18'
annotationProcessor 'org.projectlombok:lombok:1.18.18'
implementation 'org.springframework.boot:spring-boot-starter'
implementation 'org.springframework.boot:spring-boot-starter-log4j2'
implementation "org.apache.logging.log4j:log4j-spring-boot"
}
configurations {
all {
exclude group: 'org.springframework.boot', module: 'spring-boot-starter-logging'
}
}
而不需要将这个保留在application.properties:
spring.cloud.config.enabled=false
是的，Official Documentation of log4j 应该添加 log4j-spring-boot 依赖项足以实现 spring 查找。
我希望 log4j2-spring.xml 从 application.properties 文件中读取 属性。但似乎 log4j2-spring.xml 无法读取它。我已阅读 https://logging.apache.org/log4j/2.x/manual/lookups.html#SpringLookup 来实现这一点。
我在这个网站上看到了
我的build.gradle是这样的：
plugins {
id 'org.springframework.boot' version '2.5.0-SNAPSHOT'
id 'io.spring.dependency-management' version '1.0.11.RELEASE'
id 'java'
}
group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'
repositories {
mavenCentral()
maven { url 'https://repo.spring.io/milestone' }
maven { url 'https://repo.spring.io/snapshot' }
}
ext {
log4j2version = '2.14.1'
}
dependencies {
compileOnly 'org.projectlombok:lombok:1.18.18'
annotationProcessor 'org.projectlombok:lombok:1.18.18'
implementation 'org.springframework.boot:spring-boot-starter'
implementation 'org.springframework.boot:spring-boot-starter-log4j2'
implementation "org.apache.logging.log4j:log4j-spring-cloud-config-client:${log4j2version}"
implementation "org.apache.logging.log4j:log4j-api:${log4j2version}"
implementation "org.apache.logging.log4j:log4j-core:${log4j2version}"
}
configurations {
all {
exclude group: 'org.springframework.boot', module: 'spring-boot-starter-logging'
exclude group: "ch.qos.logback", module: "logback-classic"
exclude group: "org.springframework.cloud", module: "spring-cloud-bus"
}
}
application.properties 文件是：
commission.base.path1=C:/Users/user1/Downloads/demo1
logging.config=classpath:log4j2-spring.xml
spring.cloud.config.enabled=false
log4j2-spring.xml是这样的：
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<Appenders>
<Console name="console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss:SSS} [%thread] %-5level %logger{2}:%L - %msg%n"/>
</Console>
<RollingFile name="CATALINA-FILE" fileName="$${spring:commission.base.path1}/logs/catalina.log"
filePattern="$${spring:commission.base.path1}/logs/archived/catalina_%d{yyyy-MM-dd}.log.gz">
<PatternLayout>
<Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{20}:%L - %msg%n</Pattern>
</PatternLayout>
<Policies>
<TimeBasedTriggeringPolicy interval="1"/>
<SizeBasedTriggeringPolicy size="1 GB" />
</Policies>
</RollingFile>
</Appenders>
<Loggers>
<root level="debug">
<appender-ref ref="CATALINA-FILE"/>
<appender-ref ref="console"/>
</root>
</Loggers>
</configuration>
但每次我 运行 代码时，我都会收到此异常：
2021-05-21 21:28:38,409 main ERROR Unable to create file ${spring:commission.base.path1}/logs/catalina.log java.io.IOException: The filename, directory name, or volume label syntax is incorrect
at java.io.WinNTFileSystem.canonicalize0(Native Method)
at java.io.WinNTFileSystem.canonicalize(WinNTFileSystem.java:428)
at java.io.File.getCanonicalPath(File.java:618)
at java.io.File.getCanonicalFile(File.java:643)
at org.apache.logging.log4j.core.util.FileUtils.makeParentDirs(FileUtils.java:135)
at org.apache.logging.log4j.core.appender.rolling.RollingFileManager$RollingFileManagerFactory.createManager(RollingFileManager.java:720)
at org.apache.logging.log4j.core.appender.rolling.RollingFileManager$RollingFileManagerFactory.createManager(RollingFileManager.java:704)
at org.apache.logging.log4j.core.appender.AbstractManager.getManager(AbstractManager.java:113)
at org.apache.logging.log4j.core.appender.OutputStreamManager.getManager(OutputStreamManager.java:100)
at org.apache.logging.log4j.core.appender.rolling.RollingFileManager.getFileManager(RollingFileManager.java:217)
at org.apache.logging.log4j.core.appender.RollingFileAppender$Builder.build(RollingFileAppender.java:146)
at org.apache.logging.log4j.core.appender.RollingFileAppender$Builder.build(RollingFileAppender.java:62)
at org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:122)
at org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:1000)
at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:940)
at org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:932)
at org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:551)
at org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:241)
at org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:287)
at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:627)
at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:304)
at org.apache.logging.log4j.spring.boot.Log4j2CloudConfigLoggingSystem.loadConfiguration(Log4j2CloudConfigLoggingSystem.java:123)
at org.springframework.boot.logging.log4j2.Log4J2LoggingSystem.loadConfiguration(Log4J2LoggingSystem.java:181)
at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithConventions(AbstractLoggingSystem.java:80)
at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java:60)
at org.springframework.boot.logging.log4j2.Log4J2LoggingSystem.initialize(Log4J2LoggingSystem.java:163)
at org.apache.logging.log4j.spring.boot.Log4j2CloudConfigLoggingSystem.initialize(Log4j2CloudConfigLoggingSystem.java:80)
at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:312)
at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:281)
at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:239)
at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:216)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131)
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:82)
at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared(SpringApplicationRunListeners.java:63)
at java.util.ArrayList.forEach(ArrayList.java:1259)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:117)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:111)
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:62)
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:373)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:331)
at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:144)
at org.springframework.cloud.bootstrap.BootstrapApplicationListener.bootstrapServiceContext(BootstrapApplicationListener.java:212)
at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:117)
at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:74)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131)
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:82)
at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared(SpringApplicationRunListeners.java:63)
at java.util.ArrayList.forEach(ArrayList.java:1259)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:117)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:111)
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:62)
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:373)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:331)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1336)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1325)
at com.example.demo1.Demo1Application.main(Demo1Application.java:12)
如何解决这个问题？提前致谢。
问题是您需要在 Spring 云上配置 Log4j 吗？
问题
如果不是，我会说 org.apache.logging.log4j:2.14.1 依赖是一种矫枉过正。它带来了 Spring 您不需要的云依赖项。在某种程度上，我仍然没有弄清楚，它还会干扰 spring-boot-starter-log4j2 导致多次初始化日志上下文，然后作为副作用你在启动时出现此异常，因为 Spring 中的 属性 未解决。
解决方案
请注意，您不需要整个 log4j-spring-cloud-config-client 甚至 spring-boot- starter-log4j2.
以下依赖项将设置您的日志记录上下文：
- log4j
- log4j-slf4j-impl
- log4j-spring-引导
我放了一个example program in GitHub repository。变量名称略有更改，并且有注释解释每个依赖项的用途。
Gradle 构建文件的摘录
dependencies {
compileOnly 'org.projectlombok:lombok:1.18.18'
annotationProcessor 'org.projectlombok:lombok:1.18.18'
// Spring Boot dependency
implementation 'org.springframework.boot:spring-boot-starter'
testImplementation 'org.springframework.boot:spring-boot-starter-test'
// Logging dependencies
// Base Log4j 2
implementation "org.apache.logging.log4j:log4j-api:${log4j2version}"
// Will resolve spring properties
implementation "org.apache.logging.log4j:log4j-spring-boot:${log4j2version}"
// Log4j 2 to Slf4j binder
implementation "org.apache.logging.log4j:log4j-slf4j-impl:${log4j2version}"
}
Official documentation 应该说 log4j-spring-boot 依赖项足以解析 Spring 配置文件中的查找变量。
但如果您真的需要通过云配置配置 Log4J，那么您必须再次仔细查看依赖项是如何解析的以及您真正需要哪些依赖项。
尝试用这个 $ 代替 $$
fileName="${spring:commission.base.path1}/logs/catalina.log" filePattern="${spring:commission.base.path1}/logs/archived/catalina_%d{yyyy-MM-dd}.log.gz">
我刚刚添加
implementation "org.apache.logging.log4j:log4j-spring-boot"
在 build.gradle 中，现在正在运行。
实施
implementation 'org.springframework.boot:spring-boot-starter-log4j2'
足以使用 log4j2 版本 2.14.1，因为 spring 引导版本是 2.5.0-SNAPSHOT。无需为此明确添加 org.apache.logging.log4j 的依赖项。
所以我的最终 build.gradle 是：
plugins {
id 'org.springframework.boot' version '2.5.0-SNAPSHOT'
id 'io.spring.dependency-management' version '1.0.11.RELEASE'
id 'java'
}
group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'
repositories {
mavenCentral()
maven { url 'https://repo.spring.io/milestone' }
maven { url 'https://repo.spring.io/snapshot' }
}
dependencies {
compileOnly 'org.projectlombok:lombok:1.18.18'
annotationProcessor 'org.projectlombok:lombok:1.18.18'
implementation 'org.springframework.boot:spring-boot-starter'
implementation 'org.springframework.boot:spring-boot-starter-log4j2'
implementation "org.apache.logging.log4j:log4j-spring-boot"
}
configurations {
all {
exclude group: 'org.springframework.boot', module: 'spring-boot-starter-logging'
}
}
而不需要将这个保留在application.properties:
spring.cloud.config.enabled=false
是的，Official Documentation of log4j 应该添加 log4j-spring-boot 依赖项足以实现 spring 查找。