Spring Boot 使用默认日志系统首先添加dependency 依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</dependency>
新增一个配置类,在方法中打印日志
package com.example.demo.util;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class LogConfig {
private static final Logger LOG = LoggerFactory.getLogger(LogConfig.class);
@Bean
public String logMethod() {
LOG.info("==========print log==========");
return "SayHi";
}
}
application.properties 可以编写日志相关属性
logging.level.root 日志等级
logging.pattern.console 日志输出的格式
logging.path 属性用来配置日志文件的路径
在方法中添加打印日志
package com.example.demo.controller;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.example.demo.model.Student;
@RestController
public class HelloController {
private static final Logger LOG = LoggerFactory.getLogger(HelloController.class);
@RequestMapping("/sayHi")
public String sayHi(@RequestBody Student demo) {
LOG.info("OK");
return demo.getName()+demo.getAge();
}
}
这样运行Spring boot如下打印出日志