java - Spring log4j 无法在 osx 上保存日志文件

Question

我在 osx 上遇到了 spring log4j 的问题，我无法保存日志文件...这是我的配置:

log4.properties

#log4j.properties

#LOGGER
log4j.rootLogger=DEBUG, APPENDER_OUT, APPENDER_FILE

#APPENDER_OUT
log4j.appender.APPENDER_OUT=org.apache.log4j.ConsoleAppender
log4j.appender.APPENDER_OUT.layout=org.apache.log4j.PatternLayout
log4j.appender.APPENDER_OUT.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n

#APPENDER_FILE
log4j.appender.APPENDER_FILE=org.apache.log4j.RollingFileAppender
log4j.appender.APPENDER_FILE.File=test.log
log4j.appender.APPENDER_FILE.MaxFileSize=1024KB
log4j.appender.APPENDER_FILE.MaxBackupIndex=1
log4j.appender.APPENDER_FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.APPENDER_FILE.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %p [%C:%L] - %m%n

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>org.andreadorigo.webapp</groupId>
    <artifactId>Webapp</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>



    <properties>
        <org.springframework.version>3.2.4.RELEASE</org.springframework.version>
        <org.spring.security.version>3.1.4.RELEASE</org.spring.security.version>
        <org.slf4j.version>1.6.1</org.slf4j.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>




        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-core</artifactId>
            <version>${org.spring.security.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-config</artifactId>
            <version>${org.spring.security.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-web</artifactId>
            <version>${org.spring.security.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-taglibs</artifactId>
            <version>${org.spring.security.version}</version>
        </dependency>




        <dependency>
            <groupId>commons-beanutils</groupId>
            <artifactId>commons-beanutils</artifactId>
            <version>1.8.3</version>
        </dependency>

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>4.1.5.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>4.2.0.Final</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.8.2</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.9</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <dependency>
            <groupId>javax.mail</groupId>
            <artifactId>mail</artifactId>
            <version>1.4.5</version>
        </dependency>


        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>1.0</version>
        </dependency>


        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.13</version>
        </dependency>


        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.5</version>
        </dependency>

    </dependencies>
    <build>
        <finalName>Webapp</finalName>

        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

控制台错误

log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.

说实话，我也能看到这些错误:

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

他们会发生冲突吗？

Answer 1

我在您的 pom.xml 中仅看到 log4j 和 sl4j-api jar。我的猜测是，为了使用 log4j 作为 sl4j 的实现，您需要添加 slf4j-log4j12.jar:

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.7.5</version>
</dependency>

顺便说一句，link from your logs解释发生了什么:sl4j-api 仅包含 SPI这是无操作实现。 sl4j 采用模块化设计，支持不同的记录器实现，这些实现在它们自己的 jar 中提供。