Question

我正在尝试启用我的SLF4J记录器，但获取以下控制台消息：

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.

即使我已经将这两个依赖项添加到我的pom.xml中，但仍然有相同的消息：

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

我正在测试我的记录器

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
...
//Logger
private static final Logger logger = LoggerFactory.getLogger(Hello.class);
...
logger.info("Test - - - Log message...");

我是Spring / Maven的新手，并认为这很容易解决，但没有成功......

编辑：这是我的Maven 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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.myfakecompany.project</groupId>
    <artifactId>SpringApp</artifactId>
    <packaging>war</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>Spring MVC Webapp</name>
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.2.3.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-cassandra</artifactId>
            <version>1.4.5.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.3.RELEASE</version>
        </dependency>


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


    <repositories>
        <repository>
            <id>spring-milestone</id>
            <name>Spring Maven MILESTONE Repository</name>
            <url>http://repo.spring.io/libs-milestone</url>
        </repository>
    </repositories>


    <build>
        <finalName>SpringMVCApp</finalName>
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.apache.tomcat.maven</groupId>
                    <artifactId>tomcat7-maven-plugin</artifactId>
                    <version>2.2</version>
                    <configuration>
                        <path>/</path>
                        <contextReloadable>true</contextReloadable>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>
</project>

编辑2： @Ceki，这里是mvn依赖：树输出......

[INFO] com.myfakecompany.project:SpringApp:war:1.0-SNAPSHOT
[INFO] +- junit:junit:jar:3.8.1:test
[INFO] +- org.springframework:spring-webmvc:jar:4.2.3.RELEASE:compile
[INFO] |  +- org.springframework:spring-beans:jar:4.2.3.RELEASE:compile
[INFO] |  +- org.springframework:spring-context:jar:4.2.3.RELEASE:compile
[INFO] |  |  \- org.springframework:spring-aop:jar:4.2.3.RELEASE:compile
[INFO] |  |     \- aopalliance:aopalliance:jar:1.0:compile
[INFO] |  +- org.springframework:spring-core:jar:4.2.3.RELEASE:compile
[INFO] |  |  \- commons-logging:commons-logging:jar:1.2:compile
[INFO] |  +- org.springframework:spring-expression:jar:4.2.3.RELEASE:compile
[INFO] |  \- org.springframework:spring-web:jar:4.2.3.RELEASE:compile
[INFO] +- org.springframework.data:spring-data-cassandra:jar:1.4.5.RELEASE:compile
[INFO] |  +- org.springframework.data:spring-cql:jar:1.4.5.RELEASE:compile
[INFO] |  |  \- com.google.guava:guava:jar:19.0:compile
[INFO] |  +- org.springframework.data:spring-data-commons:jar:1.12.5.RELEASE:compile
[INFO] |  +- com.datastax.cassandra:cassandra-driver-dse:jar:2.1.7.1:compile
[INFO] |  |  \- com.datastax.cassandra:cassandra-driver-core:jar:2.1.7.1:compile
[INFO] |  |     +- io.netty:netty-handler:jar:4.0.27.Final:compile
[INFO] |  |     |  +- io.netty:netty-buffer:jar:4.0.27.Final:compile
[INFO] |  |     |  |  \- io.netty:netty-common:jar:4.0.27.Final:compile
[INFO] |  |     |  +- io.netty:netty-transport:jar:4.0.27.Final:compile
[INFO] |  |     |  \- io.netty:netty-codec:jar:4.0.27.Final:compile
[INFO] |  |     \- com.codahale.metrics:metrics-core:jar:3.0.2:compile
[INFO] |  \- org.slf4j:jcl-over-slf4j:jar:1.7.21:runtime
[INFO] +- org.springframework:spring-jdbc:jar:4.3.3.RELEASE:compile
[INFO] |  \- org.springframework:spring-tx:jar:4.3.3.RELEASE:compile
[INFO] +- org.slf4j:slf4j-api:jar:1.7.5:compile
[INFO] \- org.slf4j:slf4j-simple:jar:1.7.5:compile

Answer 1

更新：我的记录器现在正在工作，虽然我不确定我做了什么使其工作的两件事情之一：1）在Project Structure-＆gt; Artifacts选项卡下，我点击添加新的并添加新工件然后删除它或者2）重新启动应用程序和计算机。对不起，我无法准确确定解决方案是什么。

SLF4J Logger绑定无法正常工作

1 个答案: