feat: 补充完善JCL的demo

java-log-jcl-demo/README.md

+# Java Log Jcl demo
+测试使用JCL输出日志
+
+`JCL`的配置文件为`commons-logging.properties`。
+
+
+## 引入依赖
+```xml
+    <!--添加jcl 依赖-->
+    <dependency>
+      <groupId>commons-logging</groupId>
+      <artifactId>commons-logging</artifactId>
+      <version>1.2</version>
+    </dependency>
+```
+
+## Spring Boot环境下的默认处理
+在Spring Boot环境中,默认引入了`Spring-jcl` 包,在这个包中有一个`Jcl`的适配器`org.apache.commons.logging.LogAdapter`
+在这个适配器里会根据当前运行环境,加载默认的`Jcl` 处理器
+```java
+static {
+        if (isPresent("org.apache.logging.log4j.spi.ExtendedLogger")) {
+            if (isPresent("org.apache.logging.slf4j.SLF4JProvider") && isPresent("org.slf4j.spi.LocationAwareLogger")) {
+                logApi = LogAdapter.LogApi.SLF4J_LAL;
+            } else {
+                logApi = LogAdapter.LogApi.LOG4J;
+            }
+        } else if (isPresent("org.slf4j.spi.LocationAwareLogger")) {
+            logApi = LogAdapter.LogApi.SLF4J_LAL;
+        } else if (isPresent("org.slf4j.Logger")) {
+            logApi = LogAdapter.LogApi.SLF4J;
+        } else {
+            logApi = LogAdapter.LogApi.JUL;
+        }
+
+    }
+```
+
+因此默认的输出使用的`JUL`
+```log
+[2023-10-26 11:27:44.907] - 45884 信息 [main] --- com.feiyizhan.LogJclTests: 这是info日志...
+[2023-10-26 11:27:44.915] - 45884 警告 [main] --- com.feiyizhan.LogJclTests: 这是warn日志...
+[2023-10-26 11:27:44.920] - 45884 严重 [main] --- com.feiyizhan.LogJclTests: 这是error日志...
+[2023-10-26 11:27:44.920] - 45884 信息 [main] --- com.feiyizhan.LogJclTests: private static class org.apache.commons.logging.LogAdapter$JavaUtilLog
+```
+
+## 使用`Log4j` 处理
+
+引入依赖
+```xml
+    <!--引入Log4j-->
+    <dependency>
+      <groupId>log4j</groupId>
+      <artifactId>log4j</artifactId>
+      <version>1.2.17</version>
+    </dependency>
+```
+
+因为使用有自己的`Spring-jcl`，这个是包是处理`JCL`转`SLF4J`的，因此如果要修改为`log4j`,则需要排除掉这个包的依赖。
+再补充`log4j` 的配置文件`log4j.properties`就可以使用`log4j`输出日志了。
+当然也可以在`commons-logging.properties`强制指定`Log4j`
+```
+org.apache.commons.logging.Log = org.apache.commons.logging.impl.Log4JLogger
+```
+
+```log
+2023-10-26 11:38:12 DEBUG (com.feiyizhan.LogJclTests:25) - 这是debug日志...
+2023-10-26 11:38:12  INFO (com.feiyizhan.LogJclTests:27) - 这是info日志...
+2023-10-26 11:38:12  WARN (com.feiyizhan.LogJclTests:28) - 这是warn日志...
+2023-10-26 11:38:12 ERROR (com.feiyizhan.LogJclTests:29) - 这是error日志...
+2023-10-26 11:38:12  INFO (com.feiyizhan.LogJclTests:30) - public class org.apache.commons.logging.impl.Log4JLogger
+```
+
+## 同时有`Log4j`依赖时，强制使用`JUL` 处理
+
+在`commons-logging.properties` 中强制指定`JUL`
+```
+org.apache.commons.logging.Log = org.apache.commons.logging.impl.Jdk14Logger
+```
+
+```log
+[2023-10-26 11:41:13.173] - 46792 信息 [main] --- com.feiyizhan.LogJclTests: 这是info日志...
+[2023-10-26 11:41:13.175] - 46792 警告 [main] --- com.feiyizhan.LogJclTests: 这是warn日志...
+[2023-10-26 11:41:13.175] - 46792 严重 [main] --- com.feiyizhan.LogJclTests: 这是error日志...
+[2023-10-26 11:41:13.177] - 46792 信息 [main] --- com.feiyizhan.LogJclTests: public class org.apache.commons.logging.impl.Jdk14Logger
+```
\ No newline at end of file

java-log-jcl-demo/pom.xml

@@ -27,6 +27,10 @@
           <artifactId>spring-boot-starter-logging</artifactId>
           <groupId>org.springframework.boot</groupId>
         </exclusion>
+        <exclusion>
+          <artifactId>spring-jcl</artifactId>
+          <groupId>org.springframework</groupId>
+        </exclusion>
       </exclusions>
     </dependency>
 
@@ -55,6 +59,13 @@
       <version>1.2</version>
     </dependency>
 
+    <!--引入Log4j-->
+    <dependency>
+      <groupId>log4j</groupId>
+      <artifactId>log4j</artifactId>
+      <version>1.2.17</version>
+    </dependency>
+
   </dependencies>
 
   <build>

java-log-jcl-demo/src/main/resources/commons-logging.properties

+#org.apache.commons.logging.Log = org.apache.commons.logging.impl.Log4JLogger
+org.apache.commons.logging.Log = org.apache.commons.logging.impl.Jdk14Logger
\ No newline at end of file

java-log-jcl-demo/src/main/resources/log4j.properties

+log4j.rootLogger=DEBUG,CONSOLE
+
+#### 控制台输出 ####
+log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
+# 输出到控制台
+log4j.appender.CONSOLE.Target = System.out
+# 指定控制台输出日志级别
+log4j.appender.CONSOLE.Threshold = DEBUG
+# 默认值是 true, 表示是否立即输出
+log4j.appender.CONSOLE.ImmediateFlush = true
+# 设置编码方式
+log4j.appender.CONSOLE.Encoding = UTF-8
+# 日志输出布局
+log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
+# 如果日志输出布局为PatternLayout 自定义级别，需要使用ConversionPattern指定输出格式
+log4j.appender.CONSOLE.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %5p (%c:%L) - %m%n
+