spring mvc: log4j插件 log日志的输出-白红宇

spring mvc: log4j插件 log日志的输出

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发布时间：2019-06-24

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准备：

log插件：log4j

访问地址：http://localhost:8080/gugua3/hello/log

包：json

需要在/WEB-INF/classes/文件夹下，新建log4j的配置

log4j.properties

# Root logger optionlog4j.rootLogger=DEBUG, stdout, file# Redirect log messages to consolelog4j.appender.stdout=org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.Target=System.outlog4j.appender.stdout.layout=org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n# Redirect log messages to a log filelog4j.appender.file=org.apache.log4j.RollingFileAppender#outputs to Tomcat homelog4j.appender.file.File=${catalina.home}/logs/myapp.loglog4j.appender.file.MaxFileSize=5MBlog4j.appender.file.MaxBackupIndex=10log4j.appender.file.layout=org.apache.log4j.PatternLayoutlog4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n

那么生成的日志文件位置为: apache-tomcat-7.0.82\logs\目录下(以你的tomcat目录为主)

配置文件如下:


       
      
       Archetype Created Web Application
        
      
       	
       
        contextConfigLocation
       	
       
        /WEB-INF/applicationContext.xml
       
      
        
         
       
        encodingFilter
          
       
        org.springframework.web.filter.CharacterEncodingFilter
          
              
        
         encoding
               
        
         UTF-8
           
         
        
            
       
        encodingFilter
             
       
        /*
         
       
      
      	
       
        org.springframework.web.context.ContextLoaderListener
       
      
            
       
        json
             
       
        org.springframework.web.servlet.DispatcherServlet
             
       
        1
         
        
            
       
        json
             
       
        /

applicationContext.xml自动导入bean

json-servlet.xml

HelloController.java

package json;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.ui.ModelMap;import org.apache.log4j.Logger;@Controllerpublic class HelloController {		private static final Logger LOGGER = Logger.getLogger(HelloController.class);	@RequestMapping(value="/hello/log", method=RequestMethod.GET)	public String log(ModelMap model)	{		LOGGER.info("printHello started");				if(LOGGER.isDebugEnabled())		{			LOGGER.debug("Inside: printHello");		}				//logs exception		LOGGER.error("Logging a sample exception", new Exception("Testing"));			    //LOGGER.error("Logging a sample exception", new Exception("Testing"));				model.addAttribute("message", "hello Spring mvc Framework");		LOGGER.info("pringHello ended");				return "hello_log";	}}