Logback日志记录不起作用 [英] Logback logging not working

问题描述

我有一个使用Maven构建的Spring MVC简单地址簿项目.我想使用Logback进行日志记录，但是我是一个新手. 首先，我以这种方式更改了pom.xml:

I've a Spring MVC simple addressbook project build with maven. I want to use Logback for logging, but I'm completely new to it; first I changed my pom.xml this way:

<!-- Spring 3 dependencies -->
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-context</artifactId>
  <version>${spring.version}</version>
  <exclusions>
    <!--Exclude Commons Logging in favor of SLF4j--> 
    <exclusion>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
    </exclusion>
  </exclusions>
</dependency>   
<!-- Logging -->
<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-api</artifactId>
  <version>1.6.1</version>
</dependency>
<dependency>
  <groupId>ch.qos.logback</groupId>
  <artifactId>logback-classic</artifactId>
  <version>${logback.version}</version>
</dependency>
<dependency>
  <groupId>ch.qos.logback</groupId>
  <artifactId>logback-core</artifactId>
  <version>${logback.version}</version>
</dependency>

然后我将以下行添加到我的自定义异常DatabaseException中:

then I added this lines to my custom Exception DatabaseException:

private final static Logger logger = (Logger) LoggerFactory.getLogger(DatabaseException.class);

...

public DatabaseException(Throwable cause) {
    super(cause);
    logger.log(Level.WARNING, cause.getMessage());
}

所以当我在其他类中出现此异常时，日志可以打印以显示一些消息，但不起作用，当我在Tomcat上运行maven时，它仅打印容器日志[talledContainer] INFO ....等等.似乎我的记录器不存在

so that when I rise in other classes this exception the log is able to print to stout some messages, BUT DOES'T WORK, when I run maven on Tomcat it prints only container log [talledContainer] INFO .... etc etc. seems like my logger doesn't exists

推荐答案

要使您的DatabaseException正常工作，您的DatabaseException应该像这样:

To your DatabaseException make it work, your DatabaseException should be like this:

package org.myorg.myapp;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class DatabaseException extends Exception {

  private final static Logger logger = LoggerFactory.getLogger(DatabaseException.class);

  public DatabaseException(Throwable cause) {
    super(cause);
    logger.warn(cause.getMessage());
  }
}

此外，您需要在pom.xml中包括jcl-over-slf4j依赖项.

Also, you need to include jcl-over-slf4j dependency in your pom.xml.

<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>jcl-over-slf4j</artifactId>
  <version>1.6.1</version>
  <scope>runtime</scope>
</dependency>

我建议阅读参考文档(使用SLF4J部分). http://static.springsource.org /spring/docs/3.2.x/spring-framework-reference/html/overview.html

I would recommend reading the reference documentation (Using SLF4J section). http://static.springsource.org/spring/docs/3.2.x/spring-framework-reference/html/overview.html

希望这会有所帮助.

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