BAEL-6754 Parameterized Logging with Slf4j (#14447)

- updated logback-classic version - updated logback.xml to have only one appender for new classes - added sample parameterized logging and fluent logging
2023-07-23 20:16:50 +03:00
parent 0da3664191
commit f78b9f0b9b
5 changed files with 89 additions and 7 deletions
@@ -0,0 +1,36 @@
+package com.baeldung.parameterized.logging;
+
+import java.time.LocalDateTime;
+import java.time.ZonedDateTime;
+
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class FluentLoggingPlayground {
+
+    public static void main(String[] args) {
+
+        Exception exceptionCause = new Exception(new IllegalArgumentException("Something unprocessable"));
+
+        log.atInfo()
+            .setMessage("App is running at {}, zone = {}")
+            .addArgument(LocalDateTime.now())
+            .addArgument(ZonedDateTime.now().getZone())
+            .log();
+
+        log.atInfo()
+            .setMessage("App is running at {}, zone = {}")
+            .addArgument(LocalDateTime.now())
+            .addArgument(ZonedDateTime.now().getZone())
+            .setCause(exceptionCause)
+            .log();
+
+        log.atInfo()
+            .setMessage("App is running at")
+            .addKeyValue("time", LocalDateTime.now())
+            .addKeyValue("zone", ZonedDateTime.now().getZone())
+            .setCause(exceptionCause)
+            .log();
+
+    }
+}
@@ -0,0 +1,40 @@
+package com.baeldung.parameterized.logging;
+
+import java.time.LocalDateTime;
+import java.time.ZonedDateTime;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class LoggingPlayground {
+
+    public static final Logger log = LoggerFactory.getLogger(LoggingPlayground.class);
+
+    public static void main(String[] args) {
+        log.info("App is running at {}", LocalDateTime.now());
+
+        log.info("App is running at {}, zone = {}", LocalDateTime.now(), ZonedDateTime.now()
+            .getZone());
+
+        log.info("App is running at {}, zone = {}, java version = {}", LocalDateTime.now(), ZonedDateTime.now()
+            .getZone(), System.getProperty("java.version"));
+
+        log.info("App is running at {}, zone = {}, java version = {}, java vm = {}", LocalDateTime.now(), ZonedDateTime.now()
+            .getZone(), System.getProperty("java.version"), System.getProperty("java.vm.name"));
+
+        //old approach to print multiple parameters
+        log.info("App is running at {}, zone = {}, java version = {}, java vm = {}",
+            new Object[] { ZonedDateTime.now(), ZonedDateTime.now().getZone(), System.getProperty("java.version"), System.getProperty("java.vm.name") });
+
+        Exception exceptionCause = new Exception(new IllegalArgumentException("Something unprocessable"));
+
+        //exception as last parameters is considered as exception and printed with trace
+        log.info("App is running at {}, zone = {}, java version = {}, java vm = {}", LocalDateTime.now(), ZonedDateTime.now()
+            .getZone(), System.getProperty("java.version"), System.getProperty("java.vm.name"), exceptionCause);
+
+        //exception in between parameters is considered as pure parameter and printed without trace
+        log.info("App is running at {}, zone = {}, java version = {}, java vm = {}", LocalDateTime.now(), ZonedDateTime.now()
+            .getZone(), System.getProperty("java.version"), exceptionCause, System.getProperty("java.vm.name"));
+
+    }
+}