spring-boot集成log4j

Love The Way You Lie 2021-05-13 16:07 615阅读 0赞

Spring Boot日志系统默认使用的是logback，灵活性不高，很多时候我们需要使用log4j，只需要一些少量的配置就可以实现。

首先，去除springboot默认的日志框架；

然后，加入spring-boot对log4j的支持。

<parent>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-parent</artifactId>
          <version>1.5.5.RELEASE</version>
      </parent>
      
      <dependencies>
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <scope>test</scope>
        </dependency>
        
        
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</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>
            <version>1.3.8.RELEASE</version>
        </dependency>

接下来在/src/main/resources下加入log4j.properties：

### set log levels ###
    log4j.rootLogger = info,stdout,infolog,errorlog
    
    ###
    log4j.appender.stdout = org.apache.log4j.ConsoleAppender
    log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
    log4j.appender.stdout.layout.ConversionPattern =  [%d{MM-dd HH:mm:ss}] [%p] [%c:%L] %m%n
     
    ### 输出到日志文件 ###
    log4j.logger.infolog = info,infolog 
    log4j.appender.infolog.Append = true
    log4j.appender.infolog = org.apache.log4j.DailyRollingFileAppender
    log4j.appender.infolog.File = /data/logs/test/test.log
    log4j.appender.infolog.layout = org.apache.log4j.PatternLayout
    log4j.appender.infolog.layout.ConversionPattern = [%d{MM-dd HH:mm:ss}] [%p] [%c:%L] %m%n
     
    ### 保存异常信息到单独文件 ###
    log4j.logger.errorlog = error,errorlog
    log4j.appender.errorlog.Append = true
    log4j.appender.errorlog.Threshold = error
    log4j.appender.errorlog = org.apache.log4j.DailyRollingFileAppender
    log4j.appender.errorlog.File = /data/logs/test/test_error.log
    log4j.appender.errorlog.layout = org.apache.log4j.PatternLayout
    log4j.appender.errorlog.layout.ConversionPattern = [%d{MM-dd HH:mm:ss}] [%p] [%c:%L] %m%n

最后在代码中：

import javax.servlet.http.HttpServletRequest;
    import nc.edu.nuc.Test.entity.Test;
    import nc.edu.nuc.Test.service.TestService;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    @Controller
    public class TestController {
    	private static final Logger logger = LoggerFactory.getLogger(TestController.class); 
    	
    	@Autowired
    	private TestService testService;
    	
    	@RequestMapping("test")
        @ResponseBody
        public String home(HttpServletRequest request) {
    		String name = request.getParameter("name");
    		Test findByName = testService.findByName(name);
    		logger.info("test....{}",name);
            return findByName.toString();
        }
    
    }