1、排除springboot自带log依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
2、添加日志框架依赖
<!--引入日志依赖 抽象层 与 实现层-->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.21</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.21</version>
</dependency>
3、创建log4j.properties文件,并放在资源目录文件下src/main/resource
log4j.rootLogger=DEBUG,stdout,file
log4j.additivity.org.apache=true
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.threshold=INFO
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
log4j.appender.file=org.apache.log4j.DailyRollingFileAppender
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.DatePattern='.'yyyy-MM-dd-HH-mm
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
log4j.appender.file.Threshold=INFO
log4j.appender.file.append=true
log4j.appender.file.File=C:/myLog/foodie-api.log
4、使用
//注意导入的是import org.slf4j.Logger;下的Logger
final static Logger logger = LoggerFactory.getLogger(HelloController.class);
logger.debug("debug: hello~");
logger.info("info: hello~");
logger.warn("warn: hello~");
logger.error("error: hello~");
举例
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import springfox.documentation.annotations.ApiIgnore;
@ApiIgnore //swagger2忽略此controller
@RestController //所有请求都是json对象
public class HelloController {
final static Logger logger = LoggerFactory.getLogger(HelloController.class);
@GetMapping("/hello")
public Object hello(){
logger.debug("debug: hello~");
logger.info("info: hello~");
logger.warn("warn: hello~");
logger.error("error: hello~");
return "hello world!";
}
}
结果:
控制台
log文件