ParsingException in Response#getArray()

General Troubleshooting

• I have checked for similar issues.
• I have updated to the latest JDA version
• I have checked the branches or the maintainers’ PRs for upcoming bug fixes.

Bug Report

When creating a RestAction to retrieve guild data (e.g. all channels) the RestActions fails with a ParsingException.

I tried to ask on the Discord server but either no one could help me or my question got lost between other questions (twice). What I’m trying to do is to save all the data from a guild to local files (messages, attachments, metadata …). This should be the raw JSON to avoid having to manually go through everything and to ensure that no data gets lost.

Expected Behavior

The RestAction should have successfully returned a DataArray (i think).

Code Example or Reproduction Steps

Route.CompiledRoute route = Route.Guilds.GET_CHANNELS.compile(/*valid guild id*/);
DataArray data = new RestActionImpl<DataArray>(jda, route, (response, dataArrayRequest) -> response.getArray()).complete();

Code for JDABuilder or DefaultShardManagerBuilder Used

JDABuilder.createDefault(token)
    .setMemberCachePolicy(MemberCachePolicy.NONE);
    .setStatus(OnlineStatus.IDLE);
    .build();

Exception or Error

StackTrace

java.lang.IllegalStateException: An error occurred while parsing the response for a RestAction
    net.dv8tion.jda.api.requests.Response.parseBody(Response.java:220)
    net.dv8tion.jda.api.requests.Response.parseBody(Response.java:182)
    net.dv8tion.jda.api.requests.Response.get(Response.java:124)
    net.dv8tion.jda.api.requests.Response.getObject(Response.java:105)
    de.eldritch.discord.turtlecrawler.task.tasks.GuildTask.lambda$handleMetadata$0(GuildTask.java:120)
    net.dv8tion.jda.internal.requests.RestActionImpl.handleSuccess(RestActionImpl.java:278)
    net.dv8tion.jda.internal.requests.RestActionImpl.handleResponse(RestActionImpl.java:268)
    net.dv8tion.jda.api.requests.Request.handleResponse(Request.java:259)
    net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:237)
    net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:141)
    net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:124)
    net.dv8tion.jda.internal.requests.ratelimit.BotRateLimiter$Bucket.run(BotRateLimiter.java:478)
    java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
    java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
    java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
    java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
    java.base/java.lang.Thread.run(Thread.java:833)

// caused by:

net.dv8tion.jda.api.exceptions.ParsingException: com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.util.HashMap<java.lang.Object,java.lang.Object>` out of START_ARRAY token at [Source: (BufferedReader); line: 1, column: 1]
    net.dv8tion.jda.api.utils.data.DataObject.fromJson(DataObject.java:184)
    net.dv8tion.jda.api.requests.Response.parseBody(Response.java:204)
    net.dv8tion.jda.api.requests.Response.parseBody(Response.java:182)
    net.dv8tion.jda.api.requests.Response.get(Response.java:124)
    net.dv8tion.jda.api.requests.Response.getObject(Response.java:105)
    de.eldritch.discord.turtlecrawler.task.tasks.GuildTask.lambda$handleMetadata$0(GuildTask.java:120)
    net.dv8tion.jda.internal.requests.RestActionImpl.handleSuccess(RestActionImpl.java:278)
    net.dv8tion.jda.internal.requests.RestActionImpl.handleResponse(RestActionImpl.java:268)
    net.dv8tion.jda.api.requests.Request.handleResponse(Request.java:259)
    net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:237)
    net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:141)
    net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:124)
    net.dv8tion.jda.internal.requests.ratelimit.BotRateLimiter$Bucket.run(BotRateLimiter.java:478)
    java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
    java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
    java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
    java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
    java.base/java.lang.Thread.run(Thread.java:833)

// caused by:

com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.util.HashMap<java.lang.Object,java.lang.Object>` out of START_ARRAY token at [Source: (BufferedReader); line: 1, column: 1]
    com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:59)
    com.fasterxml.jackson.databind.DeserializationContext.reportInputMismatch(DeserializationContext.java:1442)
    com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken(DeserializationContext.java:1216)
    com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken(DeserializationContext.java:1126)
    com.fasterxml.jackson.databind.deser.std.StdDeserializer._deserializeFromEmpty(StdDeserializer.java:639)
    com.fasterxml.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:360)
    com.fasterxml.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:29)
    com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4202)
    com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3234)
    net.dv8tion.jda.api.utils.data.DataObject.fromJson(DataObject.java:179)
    net.dv8tion.jda.api.requests.Response.parseBody(Response.java:204)
    net.dv8tion.jda.api.requests.Response.parseBody(Response.java:182)
    net.dv8tion.jda.api.requests.Response.get(Response.java:124)
    net.dv8tion.jda.api.requests.Response.getObject(Response.java:105)
    de.eldritch.discord.turtlecrawler.task.tasks.GuildTask.lambda$handleMetadata$0(GuildTask.java:120)
    net.dv8tion.jda.internal.requests.RestActionImpl.handleSuccess(RestActionImpl.java:278)
    net.dv8tion.jda.internal.requests.RestActionImpl.handleResponse(RestActionImpl.java:268)
    net.dv8tion.jda.api.requests.Request.handleResponse(Request.java:259)
    net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:237)
    net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:141)
    net.dv8tion.jda.internal.requests.Requester.execute(Requester.java:124)
    net.dv8tion.jda.internal.requests.ratelimit.BotRateLimiter$Bucket.run(BotRateLimiter.java:478)
    java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
    java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
    java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
    java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
    java.base/java.lang.Thread.run(Thread.java:833)

[MinnDevelopment]

That body should parse just fine with the code you have provided in the issue. If you can make a proper example with a failure case and an example body which fails to parse, please open a new issue with the consistent reproduction steps. Your code in the initial issue description works fine, and the body you have shown also parses into an array correctly.

Make sure that you use getArray() for Route.Guilds.GET_CHANNELS and getObject() for Route.Guilds.GET_GUILD. That works fine in all my testing.

[TurtleException]

Sorry again, I uncommented the wrong line :c removed