前言：关于Log4j2，SLF4J，LogBack以及其他的一些日志框架的区别，建议大家可以先了解一下
一、添加依赖
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
|
<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-log4j2</artifactId>
</dependency>
|
二、application.properties中添加配置
1
2
| # log4j2 配置文件地址，而且log4j2-spring.xml作为默认的配置文件名，在resources目录下是就算不配置也会默认读
logging.config=classpath:log4j2-spring.xml
|
三、创建相关配置文件
配置文件应该放在resources目录下，关于配置方面的详细内容，可以参考下面几篇博文以及项目demo
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
| <?xml version="1.0" encoding="UTF-8"?>
<configuration status="info" monitorInterval="30">
<appenders>
<console name="Console" target="SYSTEM_OUT">
<ThresholdFilter level="DEBUG" onMatch="ACCEPT" onMismatch="DENY"/>
<PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
</console>
<RollingFile name="RollingFileDebug" fileName="${sys:user.home}/logs/hpaasvc/debug.log"
filePattern="${sys:user.home}/logs/hpaasvc/$${date:yyyy-MM}/debug-%d{yyyy-MM-dd}-%i.log">
<Filters>
<ThresholdFilter level="DEBUG" onMatch="ACCEPT" onMismatch="DENY"/>
<ThresholdFilter level="INFO" onMatch="DENY" onMismatch="NEUTRAL"/>
</Filters>
<PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
<Policies>
<TimeBasedTriggeringPolicy/>
<SizeBasedTriggeringPolicy size="100 MB"/>
</Policies>
</RollingFile>
<RollingFile name="RollingFileInfo" fileName="${sys:user.home}/logs/hpaasvc/info.log"
filePattern="${sys:user.home}/logs/hpaasvc/$${date:yyyy-MM}/info-%d{yyyy-MM-dd}-%i.log">
<Filters>
<ThresholdFilter level="INFO" onMatch="ACCEPT" onMismatch="DENY"/>
<ThresholdFilter level="WARN" onMatch="DENY" onMismatch="NEUTRAL"/>
</Filters>
<PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
<Policies>
<TimeBasedTriggeringPolicy/>
<SizeBasedTriggeringPolicy size="100 MB"/>
</Policies>
</RollingFile>
<RollingFile name="RollingFileWarn" fileName="${sys:user.home}/logs/hpaasvc/warn.log"
filePattern="${sys:user.home}/logs/hpaasvc/$${date:yyyy-MM}/warn-%d{yyyy-MM-dd}-%i.log">
<Filters>
<ThresholdFilter level="WARN" onMatch="ACCEPT" onMismatch="DENY"/>
<ThresholdFilter level="ERROR" onMatch="DENY" onMismatch="NEUTRAL"/>
</Filters>
<PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
<Policies>
<TimeBasedTriggeringPolicy/>
<SizeBasedTriggeringPolicy size="100 MB"/>
</Policies>
<DefaultRolloverStrategy max="20"/>
</RollingFile>
<RollingFile name="RollingFileError" fileName="${sys:user.home}/logs/hpaasvc/error.log"
filePattern="${sys:user.home}/logs/hpaasvc/$${date:yyyy-MM}/error-%d{yyyy-MM-dd}-%i.log">
<ThresholdFilter level="ERROR"/>
<PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
<Policies>
<TimeBasedTriggeringPolicy/>
<SizeBasedTriggeringPolicy size="100 MB"/>
</Policies>
</RollingFile>
</appenders>
<loggers>
<logger name="org.springframework" level="INFO">
</logger>
<root level="all">
<appender-ref ref="Console"/>
<appender-ref ref="RollingFileDebug"/>
<appender-ref ref="RollingFileInfo"/>
<appender-ref ref="RollingFileWarn"/>
<appender-ref ref="RollingFileError"/>
</root>
</loggers>
</configuration>
|
使用Log4j2进行日志记录
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
| @RestController
@RequestMapping("/users")
public class UserController {
public final Logger logger= LoggerFactory.getLogger(getClass());
@Autowired
UserService userService;
@PostMapping("/login")
public RestResult login(@RequestBody User loginUser) {
logger.debug("/users/login [Post] -> loginUser : {}", loginUser);
return userService.login(loginUser);
}
}
|
总结：在使用Log4j2后我个人感觉，他的优势和劣势都是使用xml进行配置的方便，为什么说这也是劣势呢，因为我看了好多才搞懂各个xml的参数含义等等，当然了，我觉得这不是Log4j2的劣势，是我的劣势 -_- 。