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kuailedetanger · Oct 27, 2020 · adeafb5 · adeafb5
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diff --git a/logging/README.md b/logging/README.md
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+Java 里边的日志两大类：
+
+- 门面（Apache Commons Logging，Slf4j）
+- 实现（Java Util Logging、Log4j）
+
+日志级别：
+
+- ERROR
+- WARN
+- INFO
+- DEBUG
+- TRACE
+
+Spring Boot 使用 Apache Commons Logging 作为内部日志框架，默认的日志实现是 Java Util Logging。
diff --git a/logging/pom.xml b/logging/pom.xml
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.3.4.RELEASE</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>org.javaboy</groupId>
+    <artifactId>logging</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>logging</name>
+    <description>Demo project for Spring Boot</description>
+
+    <properties>
+        <java.version>1.8</java.version>
+    </properties>
+
+    <dependencies>
+        <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>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.junit.vintage</groupId>
+                    <artifactId>junit-vintage-engine</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
diff --git a/logging/src/main/java/org/javaboy/logging/HelloController.java b/logging/src/main/java/org/javaboy/logging/HelloController.java
@@ -0,0 +1,28 @@
+package org.javaboy.logging;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+/**
+ * @author 江南一点雨
+ * @微信公众号 江南一点雨   springboot-logging
+ * @网站 http://www.itboyhub.com
+ * @国际站 http://www.javaboy.org
+ * @微信 a_java_boy
+ * @GitHub https://github.com/lenve
+ * @Gitee https://gitee.com/lenve
+ */
+@RestController
+public class HelloController {
+    private static final Logger logger = LoggerFactory.getLogger(HelloController.class);
+    @GetMapping("/hello")
+    public void hello() {
+        for (int i = 0; i < 99999; i++) {
+            logger.info("hello-info");
+            logger.warn("hello-warn");
+            logger.error("hello-error");
+        }
+    }
+}
diff --git a/logging/src/main/java/org/javaboy/logging/LoggingApplication.java b/logging/src/main/java/org/javaboy/logging/LoggingApplication.java
@@ -0,0 +1,13 @@
+package org.javaboy.logging;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class LoggingApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(LoggingApplication.class, args);
+    }
+
+}
diff --git a/logging/src/main/resources/application.yaml b/logging/src/main/resources/application.yaml
@@ -0,0 +1,6 @@
+logging:
+  level:
+    root: error
+    org.javaboy.logging: info
+  file:
+    name: ${user.home}/logs/hello.log
diff --git a/logging/src/main/resources/log4j2-bak.xml b/logging/src/main/resources/log4j2-bak.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<configuration>
+    <appenders>
+        <File name="file"
+              fileName="${sys:user.home}/logs/log4j2.log">
+            <PatternLayout pattern="%d{HH:mm:ss,SSS} %p %c (%L) - %m%n"/>
+        </File>
+
+    </appenders>
+    <loggers>
+        <root level="ERROR">
+            <appender-ref ref="file"/>
+        </root>
+        <logger name="org.javaboy.logging"
+                level="INFO"/>
+    </loggers>
+</configuration>
diff --git a/logging/src/main/resources/log4j2.xml b/logging/src/main/resources/log4j2.xml
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration status="warn">
+    <properties>
+        <Property name="app_name">logging</Property>
+        <Property name="log_path">logs/${app_name}</Property>
+    </properties>
+    <appenders>
+        <console name="Console" target="SYSTEM_OUT">
+            <PatternLayout pattern="[%d][%t][%p][%l] %m%n" />
+        </console>
+        <RollingFile name="RollingFileInfo" fileName="${log_path}/info.log"
+                     filePattern="${log_path}/$${date:yyyy-MM}/info-%d{yyyy-MM-dd}-%i.log.gz">
+            <Filters>
+                <ThresholdFilter level="INFO" />
+                <ThresholdFilter level="WARN" onMatch="DENY"
+                                 onMismatch="NEUTRAL" />
+            </Filters>
+            <PatternLayout pattern="[%d][%t][%p][%c:%L] %m%n" />
+            <Policies>
+                <TimeBasedTriggeringPolicy interval="1" modulate="true" />
+                <SizeBasedTriggeringPolicy size="2 MB" />
+            </Policies>
+            <DefaultRolloverStrategy compressionLevel="0" max="10"/>
+        </RollingFile>
+        <RollingFile name="RollingFileWarn" fileName="${log_path}/warn.log"
+                     filePattern="${log_path}/$${date:yyyy-MM}/warn-%d{yyyy-MM-dd}-%i.log.gz">
+            <Filters>
+                <ThresholdFilter level="WARN" />
+                <ThresholdFilter level="ERROR" onMatch="DENY"
+                                 onMismatch="NEUTRAL" />
+            </Filters>
+            <PatternLayout pattern="[%d][%t][%p][%c:%L] %m%n" />
+            <Policies>
+                <TimeBasedTriggeringPolicy interval="1" modulate="true" />
+                <SizeBasedTriggeringPolicy size="2 MB" />
+            </Policies>
+            <DefaultRolloverStrategy compressionLevel="0" max="10"/>
+        </RollingFile>
+
+        <RollingFile name="RollingFileError" fileName="${log_path}/error.log"
+                     filePattern="${log_path}/$${date:yyyy-MM}/error-%d{yyyy-MM-dd}-%i.log.gz">
+            <ThresholdFilter level="ERROR" />
+            <PatternLayout pattern="[%d][%t][%p][%c:%L] %m%n" />
+            <Policies>
+                <TimeBasedTriggeringPolicy interval="1" modulate="true" />
+                <SizeBasedTriggeringPolicy size="2 MB" />
+            </Policies>
+            <DefaultRolloverStrategy compressionLevel="0" max="10"/>
+        </RollingFile>
+    </appenders>
+    <loggers>
+        <root level="info">
+            <appender-ref ref="Console" />
+            <appender-ref ref="RollingFileInfo" />
+            <appender-ref ref="RollingFileWarn" />
+            <appender-ref ref="RollingFileError" />
+        </root>
+    </loggers>
+</configuration>
diff --git a/logging/src/test/java/org/javaboy/logging/LoggingApplicationTests.java b/logging/src/test/java/org/javaboy/logging/LoggingApplicationTests.java
@@ -0,0 +1,13 @@
+package org.javaboy.logging;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class LoggingApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+
+}