【日志报错 _log4j 】 | IT修真院·坑乎

日志报错

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log4j

详细描述

package com.mvc.log;

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

public class Log4jTest {

private static Logger logger = LoggerFactory.getLogger(Log4jTest.class);

public static void main(String[] args) {
			// 记录debug级别的信息
			logger.debug("This is debug message.");
			// 记录info级别的信息
			logger.info("This is info message.");
			// 记录error级别的信息
			logger.error("This is error message.");
		}
}

pom.xml
<dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-core</artifactId>
      <version>2.10.0</version>
    </dependency>
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-api</artifactId>
      <version>2.10.0</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>1.7.25</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.25</version>
      <scope>test</scope>
    </dependency>

错误截图

编辑于2024-11-24

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[武汉|荣耀师兄]JAVA-刘欢
0

这应该是slf4j包的问题, 网上搜一下啊

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编辑于2018-05-25
[西安|荣耀师兄]JAVA-刘优
0
注释掉
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.10.0</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.10.0</version>
</dependency>
只留下
```

<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.7.25</version>
</dependency>
```
就好了，我的之前也是，当时查的是说接口的实现类好几个，不知道加载哪一个，所以注释掉别的实现类只留一个就OK
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编辑于2018-09-08

去第页