Stack trace in logs in a single line

src/main/java/org/ccalm/jwt/SingleLineThrowableProxyConverter.java

@@ -0,0 +1,14 @@
+package org.ccalm.jwt;
+
+import ch.qos.logback.classic.spi.IThrowableProxy;
+import ch.qos.logback.classic.spi.ThrowableProxyUtil;
+import ch.qos.logback.classic.pattern.ThrowableProxyConverter;
+
+public class SingleLineThrowableProxyConverter extends ThrowableProxyConverter {
+    @Override
+    protected String throwableProxyToString(IThrowableProxy tp) {
+        if (tp == null) return "";
+        String stackTrace = ThrowableProxyUtil.asString(tp);
+        return stackTrace.replace("\r", "").replace("\n", "\\n").replace("\t", "    ");
+    }
+}

src/main/resources/logback-spring.xml

@@ -1,6 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
 
+    <conversionRule conversionWord="exOneLine" converterClass="org.ccalm.jwt.SingleLineThrowableProxyConverter"/>
+
     <property name="LOGS" value="logs" />
     <springProperty scope="context" name="appName" source="spring.application.name"/>
 
@@ -8,7 +10,7 @@
         <file>${LOGS}/${appName}.log</file>
         <encoder>
             <pattern>
-                {"timestamp":"%d{yyyy-MM-dd'T'HH:mm:ss.SSS'Z'}","thread":"[%thread]","level":"%level","logger":"%logger{36}","marker":"%marker","message":"%msg","exception":"%ex"}%n
+                {"timestamp":"%d{yyyy-MM-dd'T'HH:mm:ss.SSS'Z'}","thread":"[%thread]","level":"%level","logger":"%logger{36}","marker":"%marker","message":"%msg","exception":"%exOneLine"}%n
             </pattern>
         </encoder>
         <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">