add ignoring NullPointerException

build.gradle

@@ -2,6 +2,7 @@ plugins {
     id 'java'
     id "com.github.johnrengelman.shadow" version "6.1.0"
     id "maven-publish"
+    id "idea"
 }
 
 group 'net.kunmc.lab'
@@ -40,13 +41,21 @@ java {
     }
 }
 
+idea {
+    module {
+        downloadJavadoc = true
+        downloadSources = true
+    }
+}
+
 tasks.withType(JavaCompile) {
     options.encoding = "UTF-8"
 }
 
 shadowJar {
     archiveFileName = "${rootProject.name}-${version}.jar"
     exclude "net/minecraft"
+    exclude "org/bukkit"
 }
 tasks.build.dependsOn tasks.shadowJar
 

src/main/java/net/kunmc/lab/configlib/config/BaseConfig.java

@@ -173,14 +173,18 @@ void replaceFields(Class<?> clazz, Object src, Object dst) {
     }
 
     private void replaceField(Field field, Object src, Object dst) throws IllegalAccessException {
-        List<Field> fieldList = ReflectionUtils.getFieldsIncludingSuperclasses(field.getType());
-        Object srcObj = field.get(src);
-        Object dstObj = field.get(dst);
-
-        if (fieldList.isEmpty()) {
-            field.set(dst, srcObj);
-        } else {
-            replaceFields(field.getType(), srcObj, dstObj);
+        try {
+            List<Field> fieldList = ReflectionUtils.getFieldsIncludingSuperclasses(field.getType());
+            Object srcObj = field.get(src);
+            Object dstObj = field.get(dst);
+
+            if (fieldList.isEmpty()) {
+                field.set(dst, srcObj);
+            } else {
+                replaceFields(field.getType(), srcObj, dstObj);
+            }
+        } catch (NullPointerException ignored) {
+            // 新しいValueが追加された時のためにNullPointerExceptionを回避する
         }
     }
 }