springboot整合log4j

1.在pom.xml中引入依赖

<dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-log4j</artifactId>
         <version>1.3.8.RELEASE</version>
</dependency>

2.在src/main/resources/下创建log4j.properties，内容如下

log4j.rootLogger =DEBUG,stdout,D,E

log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target = System.out
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n
log4j.appender.Console.encoding=UTF-8

log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File = E:/logs/log.log
log4j.appender.D.Append = true
log4j.appender.D.Threshold = DEBUG
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n

log4j.appender.E = org.apache.log4j.DailyRollingFileAppender
log4j.appender.E.File =E:/logs/error.log
log4j.appender.E.Append = true
log4j.appender.E.Threshold = ERROR
log4j.appender.E.layout = org.apache.log4j.PatternLayout
log4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n*

3创建controller控制器

import java.util.List;

import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.fansir.mapper.UserMapper;
import com.fansir.model.User;

@Controller
public class IndexController {
    
    private static Logger log=Logger.getLogger(IndexController.class);
    
    
    @RequestMapping("/index")
    public String Index() {
        log.info("log4j整合完毕！！！");
        return"index";
        
    }
}

 配置完成，Controller中使用log4j

@RestController //声明Rest风格的控制器
@RequestMapping("test")
public class TestController {
    Logger logger=Logger.getLogger(TestController.class);

    @RequestMapping("logtest")
    @ResponseBody
    public String logtest(){
        logger.fatal("致命错误");
	logger.error("严重警告");
	logger.warn("警告");
	logger.info("普通信息");
	logger.debug("调试信息");
	return "";
    }
}

4.此时在控制台输入出的日志信息如果有中文乱码的话，可以在src/main/resources/下创建logback.xml（不要改名），添加以下内容：

<?xml version="1.0" encoding="UTF-8"?>


<!-- 处理日志中文乱码的配置 -->


<!-- spirng boot 默认使用logback，默认会读取resources文件夹下的名为logback.xml的文件  zhangyu 20180807-->
<configuration debug="false">
  <!--定义日志文件的存储地址 勿在 LogBack 的配置中使用相对路径 -->
  <property name="LOG_HOME" value="C:/loghome" />
  <!-- 控制台输出 -->
  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
      <!--格式化输出：%d表示日期，%thread表示线程名，%-5level：级别从左显示5个字符宽度%msg：日志消息，%n是换行符 -->
      <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
      <!-- <charset>UTF-8</charset> -->
    </encoder>
  </appender>

  <!-- 日志输出级别 -->
  <root level="INFO">
    <appender-ref ref="STDOUT" />
  </root>
</configuration>

亲测中文乱码解决！