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I'm getting the following exception with deserializing a json file using jackson. Any tips on how to fix it? com.fasterxml.jackson.databind.JsonMappingException: No enum constants for class com.dp...
#2: Post edited
by
Abbas Gadhia
·
2025-02-21T10:30:44Z (1 day ago)
- I'm getting the following exception with deserializing a json file using jackson. Any tips on how to fix it?
- ```java
- com.fasterxml.jackson.databind.JsonMappingException: No enum constants for class com.dp.h (through reference chain: com.dp.L["properties"]->com.dp.model.K["traits"]->com.dp.model.W["distribution"])
- at com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:290)
- at com.fasterxml.jackson.databind.SerializerProvider.reportMappingProblem(SerializerProvider.java:1360)
- at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:1498)
- at com.fasterxml.jackson.databind.SerializerProvider.findValueSerializer(SerializerProvider.java:619)
- at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.resolve(BeanSerializerBase.java:374)
- at com.fasterxml.jackson.databind.ser.SerializerCache.addAndResolveNonTypedSerializer(SerializerCache.java:223)
- at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:1483)
- at com.fasterxml.jackson.databind.SerializerProvider.findPrimaryPropertySerializer(SerializerProvider.java:739)
- at com.fasterxml.jackson.databind.ser.impl.PropertySerializerMap.findAndAddPrimarySerializer(PropertySerializerMap.java:64)
- at com.fasterxml.jackson.databind.ser.BeanPropertyWriter._findAndAddDynamic(BeanPropertyWriter.java:901)
- at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:710)
- at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770)
- at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:183)
- at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:732)
- at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770)
- at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:183)
- at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:732)
- at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770)
- at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeWithType(BeanSerializerBase.java:653)
- at com.fasterxml.jackson.databind.ser.impl.TypeWrappedSerializer.serialize(TypeWrappedSerializer.java:32)
- at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:502)
- at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:341)
- at com.fasterxml.jackson.databind.ObjectMapper._writeValueAndClose(ObjectMapper.java:4799)
- at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsString(ObjectMapper.java:4040)
- Caused by: java.lang.IllegalArgumentException: No enum constants for class com.dp.customtypes.h
- at com.fasterxml.jackson.databind.util.EnumValues._enumConstants(EnumValues.java:266)
- at com.fasterxml.jackson.databind.util.EnumValues.constructFromName(EnumValues.java:85)
- at com.fasterxml.jackson.databind.ser.std.EnumSerializer.construct(EnumSerializer.java:123)
- at com.fasterxml.jackson.databind.ser.BasicSerializerFactory.buildEnumSerializer(BasicSerializerFactory.java:1218)
- at com.fasterxml.jackson.databind.ser.BasicSerializerFactory.findSerializerByPrimaryType(BasicSerializerFactory.java:428)
- at com.fasterxml.jackson.databind.ser.BeanSerializerFactory._createSerializer2(BeanSerializerFactory.java:235)
- at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.createSerializer(BeanSerializerFactory.java:174)
- at com.fasterxml.jackson.databind.SerializerProvider._createUntypedSerializer(SerializerProvider.java:1525)
- at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:1493)
- ... 38 more
- ```
- I'm getting the following exception with deserializing a json file using jackson. Any tips on how to fix it?
- ```java
- com.fasterxml.jackson.databind.JsonMappingException: No enum constants for class com.dp.h (through reference chain: com.dp.L["properties"]->com.dp.model.K["traits"]->com.dp.model.W["distribution"])
- at com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:290)
- at com.fasterxml.jackson.databind.SerializerProvider.reportMappingProblem(SerializerProvider.java:1360)
- at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:1498)
- at com.fasterxml.jackson.databind.SerializerProvider.findValueSerializer(SerializerProvider.java:619)
- at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.resolve(BeanSerializerBase.java:374)
- at com.fasterxml.jackson.databind.ser.SerializerCache.addAndResolveNonTypedSerializer(SerializerCache.java:223)
- at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:1483)
- at com.fasterxml.jackson.databind.SerializerProvider.findPrimaryPropertySerializer(SerializerProvider.java:739)
- at com.fasterxml.jackson.databind.ser.impl.PropertySerializerMap.findAndAddPrimarySerializer(PropertySerializerMap.java:64)
- at com.fasterxml.jackson.databind.ser.BeanPropertyWriter._findAndAddDynamic(BeanPropertyWriter.java:901)
- at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:710)
- at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770)
- at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:183)
- at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:732)
- at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770)
- at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:183)
- at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:732)
- at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770)
- at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeWithType(BeanSerializerBase.java:653)
- at com.fasterxml.jackson.databind.ser.impl.TypeWrappedSerializer.serialize(TypeWrappedSerializer.java:32)
- at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:502)
- at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:341)
- at com.fasterxml.jackson.databind.ObjectMapper._writeValueAndClose(ObjectMapper.java:4799)
- at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsString(ObjectMapper.java:4040)
- Caused by: java.lang.IllegalArgumentException: No enum constants for class com.dp.customtypes.h
- at com.fasterxml.jackson.databind.util.EnumValues._enumConstants(EnumValues.java:266)
- at com.fasterxml.jackson.databind.util.EnumValues.constructFromName(EnumValues.java:85)
- at com.fasterxml.jackson.databind.ser.std.EnumSerializer.construct(EnumSerializer.java:123)
- at com.fasterxml.jackson.databind.ser.BasicSerializerFactory.buildEnumSerializer(BasicSerializerFactory.java:1218)
- at com.fasterxml.jackson.databind.ser.BasicSerializerFactory.findSerializerByPrimaryType(BasicSerializerFactory.java:428)
- at com.fasterxml.jackson.databind.ser.BeanSerializerFactory._createSerializer2(BeanSerializerFactory.java:235)
- at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.createSerializer(BeanSerializerFactory.java:174)
- at com.fasterxml.jackson.databind.SerializerProvider._createUntypedSerializer(SerializerProvider.java:1525)
- at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:1493)
- ... 38 more
- ```
- This is how my gradle proguard file looks
- ```gradle.kts
- tasks.register<proguard.gradle.ProGuardTask>("proguard") {
- verbose()
- ignorewarnings()
- keeppackagenames("com.dp.**")
- // retain annotations and other stuff that could be used downstream (since this project is used as a library)
- // https://www.guardsquare.com/manual/configuration/attributes
- keepattributes("Exceptions,InnerClasses,Signature,Deprecated,SourceFile,LineNumberTable,*Annotation*,EnclosingMethod")
- injars(tasks.jar.flatMap { it.archiveFile })
- outjars(layout.buildDirectory.file("obfuscated.jar"))
- printmapping(layout.buildDirectory.file(project.name + "-obfuscation-mapping.txt"))
- val javaHome = BuildUtils.getJavaHome(javaToolchains)
- libraryjars(
- // filters must be specified first, as a map
- mapOf(
- "jarfilter" to "!**.jar",
- "filter" to "!module-info.class"
- ),
- "$javaHome/jmods/java.base.jmod"
- )
- libraryjars(sourceSets.main.get().compileClasspath)
- // need the following for incremental obfuscation
- dontshrink()
- dontoptimize()
- }
- ```
#1: Initial revision
by
Abbas Gadhia
·
2025-02-21T10:20:32Z (1 day ago)
Proguard induced : No enum constants for class while deserializing using jackson
I'm getting the following exception with deserializing a json file using jackson. Any tips on how to fix it? ```java com.fasterxml.jackson.databind.JsonMappingException: No enum constants for class com.dp.h (through reference chain: com.dp.L["properties"]->com.dp.model.K["traits"]->com.dp.model.W["distribution"]) at com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:290) at com.fasterxml.jackson.databind.SerializerProvider.reportMappingProblem(SerializerProvider.java:1360) at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:1498) at com.fasterxml.jackson.databind.SerializerProvider.findValueSerializer(SerializerProvider.java:619) at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.resolve(BeanSerializerBase.java:374) at com.fasterxml.jackson.databind.ser.SerializerCache.addAndResolveNonTypedSerializer(SerializerCache.java:223) at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:1483) at com.fasterxml.jackson.databind.SerializerProvider.findPrimaryPropertySerializer(SerializerProvider.java:739) at com.fasterxml.jackson.databind.ser.impl.PropertySerializerMap.findAndAddPrimarySerializer(PropertySerializerMap.java:64) at com.fasterxml.jackson.databind.ser.BeanPropertyWriter._findAndAddDynamic(BeanPropertyWriter.java:901) at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:710) at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770) at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:183) at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:732) at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770) at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:183) at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:732) at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770) at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeWithType(BeanSerializerBase.java:653) at com.fasterxml.jackson.databind.ser.impl.TypeWrappedSerializer.serialize(TypeWrappedSerializer.java:32) at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:502) at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:341) at com.fasterxml.jackson.databind.ObjectMapper._writeValueAndClose(ObjectMapper.java:4799) at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsString(ObjectMapper.java:4040) Caused by: java.lang.IllegalArgumentException: No enum constants for class com.dp.customtypes.h at com.fasterxml.jackson.databind.util.EnumValues._enumConstants(EnumValues.java:266) at com.fasterxml.jackson.databind.util.EnumValues.constructFromName(EnumValues.java:85) at com.fasterxml.jackson.databind.ser.std.EnumSerializer.construct(EnumSerializer.java:123) at com.fasterxml.jackson.databind.ser.BasicSerializerFactory.buildEnumSerializer(BasicSerializerFactory.java:1218) at com.fasterxml.jackson.databind.ser.BasicSerializerFactory.findSerializerByPrimaryType(BasicSerializerFactory.java:428) at com.fasterxml.jackson.databind.ser.BeanSerializerFactory._createSerializer2(BeanSerializerFactory.java:235) at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.createSerializer(BeanSerializerFactory.java:174) at com.fasterxml.jackson.databind.SerializerProvider._createUntypedSerializer(SerializerProvider.java:1525) at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:1493) ... 38 more ```