SpringBoot中的Log4j [英] Log4j in SpringBoot

问题描述

我是Spring Boot的新手，正在使用Spring Boot进行简单的log4j演示。我使用gradle项目，并具有spring-boot-starter-web和groovy依赖项。以下是我的log4j.properties文件内容。我需要的是，当我执行主程序并使用注解@ Log4J时，我必须能够将log.perflog保存到我本地（windows）的文件中。

  log4j.rootLogger = WARN，stdout，cslLog 
 
 log4j.logger.perfLog = WARN，perfLog 
 log4j.additivity.perfLog = false 
 
 log4j.appender.perfLog = org.apache.log4j.RollingFileAppender 
 log4j.appender.perfLog.File = $ {GRAILS_HOME} /logs/csl.log 
 log4j.appender.perfLog。 Append = true 
 log4j.appender.perfLog.ImmediateFlush = true 
 
 log4j.appender.perfLog.MaxFileSize = 200MB 
 log4j.appender.perfLog.MaxBackupIndex = 1 
  

我的示例groovy类：

  package sample.actuator.log4j 
 
 import groovy.util.logging.Log4j; 
 import org.apache.log4j.Logger; 
 import org.springframework.boot.SpringApplication; 
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration; 
 import org.springframework.web.bind.annotation.RequestMapping; 
 import org.springframework.web.bind.annotation.RestController; 
 
 @ Log4j 
 @RestController 
 @EnableAutoConfiguration $ b $ class HelloGroovy {
 
静态记录器perfLog = Logger.getLogger（perfLog）
 
 @RequestMapping（/ logger）
字符串记录器（）{
 log.info创建了一个名为标识符的新项目
 log.error创建了一个新的item命名标识符
 log.warn创建了一个名为identifier的新项目
 
 System.out.println（Test）
 perfLog.trace（Test）
返回Logger Called。 
 
 
 
 static main（args）{
 
 SpringApplication.run（this，args）
} 
 
 
 
 
 $ b $ p 
 $ b 
所有get都是控制台中的前3行打印，然后是Test，post我没有在log4j.properties中提到的文件中出现。
 
 
 
我的build.gradle文件
  buildscript {
 repositories {
 maven {
 url'http://artifactory.myorg.com:8081/artifactory/plugins-release'
 
 
 dependencies {
 classpath（org.springframework.boot：spring-boot-gradle-plugin：1.1.5.RELEASE）
} 
} 
 
 apply plugin：'java'
 apply plugin：'eclipse'
 apply plugin：'idea'
 apply plugin：'spring-boot'
 
 jar {
 baseName ='log4jOwn'
} 
 
存储库{
 maven {
 url'http：// artifactory。 myorg.com： 8081 / artifactory / plugins-release'
} 
} 
 
依赖项{
 compile'org.codehaus.groovy：groovy-all：2.3.3'
编译'org.springframework.boot：spring-boot-starter-web'
 
 testCompile（junit：junit）
} 
 
任务包装器类型：Wrapper）{
 gradleVersion ='1.11'
} 
  
 
 
解决你有 spring-boot-starter-web 作为直接的依赖关系，它不使用log4j进行日志记录，所以log4j不在你的类路径中。你需要排除 spring-boot-starter-logging ，并且包含 spring-boot-starter-log4j （就像这里 https： //github.com/spring-projects/spring-boot/blob/master/spring-boot-samples/spring-boot-sample-actuator-log4j/pom.xml#L36   - 这就是Maven，但如果你知道Gradle你可以找出如何做同样的事情）。
 <依赖关系> 
< groupId> org.springframework.boot< / groupId> 
< artifactId> spring-boot-starter-actuator< / artifactId> 
<排除项> 
<排除> 
< groupId> org.springframework.boot< / groupId> 
< artifactId> spring-boot-starter-logging< / artifactId> 
< /排除> 
< /排除> 
< /依赖关系> 
< dependency> 
< groupId> org.springframework.boot< / groupId> 
< artifactId> spring-boot-starter-log4j< / artifactId> 
< /依赖关系> 
  
等价于Gradle： 
 
 
 依赖关系{
 compile'org.codehaus.groovy：groovy'
 compile（'org.springframework.boot：spring-boot-starter-web'）{
 exclude模块：'org.springframework.boot：spring-boot-starter-logging'
} 
 compile（'org.springframework.boot：spring-boot-starter-log4j'）
} 
  
（感谢无论谁发布该文件作为编辑）。 
I'm newbie to Spring Boot and working on a simple log4j demo using Spring Boot. I used the gradle project and have spring-boot-starter-web and groovy dependencies. Below is my log4j.properties file content. All I need is , when i execute the main program and use annotation @Log4J i must be able to save the log.perflog to a file in my local (windows).
log4j.rootLogger = WARN , stdout, cslLog

log4j.logger.perfLog = WARN, perfLog
log4j.additivity.perfLog = false

log4j.appender.perfLog = org.apache.log4j.RollingFileAppender
log4j.appender.perfLog.File = ${GRAILS_HOME}/logs/csl.log
log4j.appender.perfLog.Append = true
log4j.appender.perfLog.ImmediateFlush = true

log4j.appender.perfLog.MaxFileSize=200MB
log4j.appender.perfLog.MaxBackupIndex = 1
My sample groovy Class:
package sample.actuator.log4j

import groovy.util.logging.Log4j;
import org.apache.log4j.Logger;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@Log4j
@RestController
@EnableAutoConfiguration
class HelloGroovy {

    static Logger perfLog = Logger.getLogger("perfLog")

    @RequestMapping("/logger")
    String logger() {
        log.info "created a new item named  identifier"
        log.error "created a new item named  identifier"
        log.warn "created a new item named  identifier"

        System.out.println("Test")
        perfLog.trace("Test")
        return "Logger Called."

    }

    static main(args) {

        SpringApplication.run(this, args)
    }

}
All get is the first 3 lines print in the console and then "Test" , post that nothing shows up in the file i have mentioned in the log4j.properties.


My build.gradle file
buildscript {
    repositories {
            maven {
                url 'http://artifactory.myorg.com:8081/artifactory/plugins-release'
            }
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.1.5.RELEASE")
    }
}

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'idea'
apply plugin: 'spring-boot'

jar {
    baseName = 'log4jOwn'
}

repositories {
            maven {
                url 'http://artifactory.myorg.com:8081/artifactory/plugins-release'
            }
    }

dependencies {
    compile 'org.codehaus.groovy:groovy-all:2.3.3'
    compile 'org.springframework.boot:spring-boot-starter-web'

    testCompile("junit:junit")
}

task wrapper(type: Wrapper) {
    gradleVersion = '1.11'
}

解决方案
You have spring-boot-starter-web as a direct dependency and it doesn't use log4j for logging so log4j is not on your classpath. You would need to exclude spring-boot-starter-logging and include spring-boot-starter-log4j (like here https://github.com/spring-projects/spring-boot/blob/master/spring-boot-samples/spring-boot-sample-actuator-log4j/pom.xml#L36 - that's Maven but if you know Gradle you can figure out how to do the same thing).
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-logging</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-log4j</artifactId>
    </dependency>
Gradle equivalent:
dependencies {
  compile 'org.codehaus.groovy:groovy'
  compile ('org.springframework.boot:spring-boot-starter-web'){
    exclude module: 'org.springframework.boot:spring-boot-starter-logging'
  }
  compile ('org.springframework.boot:spring-boot-starter-log4j')
}
(Thanks to whoever posted that as an edit.)

                        
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