Gson: GSON `fromJson` can't parse JSON without quotes!

[SwayChen]

For example:

{
   name : Google Company,
   age:19
}

That's OK following codes, I can get correct value:

JsonObject jsonObject = new JsonParser().parse(jsonSt).getAsJsonObject();
String name = jsonObject.get("name").getAsString();
int age = jsonObject.get("age").getAsInt();

but it can't parse into a bean class using fromJson

will cause Exception like this:

java.lang.RuntimeException: 
com.google.gson.JsonSyntaxException: 
com.google.gson.stream.MalformedJsonException: Unterminated object at line 1 column 15 path $.name

[danorton-cubic-austin]

This is correct behavior.
Your example is not valid JSON.
See https://www.json.org/

[SwayChen]

@danorton2 Hi, I know it's a invalid JSON. My puzzle is why I can parse it into a JsonObject and get value correctly, but can't parse it into a bean. :)

In my opinion, it should do parse into a bean because it can get value from a JsonObject.

[rafritts]

@SwayChen Just to be clear, you want fromJson try to parse invalid Json into a bean? Why?

[SwayChen]

@rafritts @danorton2

Don't make misunderstanding :)

What make me puzzle is why JsonObject can parse that invalid JSON at the same time the valid JSON can't be parse into a bean.

The point is "Why JsonObject can recognize that invalid JSON", I know JSON must be with quotes mark after I meet program. Now JSON without quotes can be parsed. -_-

[cardamon]

How to reproduce?

        String invalidJson = ""
                + "{\n"
                + "   name : Google Company,\n"
                + "   age:19\n"
                + "}";
        new JsonParser().parse(invalidJson);

This will (correctly) throw com.google.gson.stream.MalformedJsonException...

[thinkerou]

I also have like issue but my case seem like have space, please see https://github.com/thinkerou/karate-grpc/issues/3 thanks!

[SwayChen]

I also have like issue but my case seem like have space, please see thinkerou/karate-grpc#3 thanks!

The author have marked as a bug.

[cowtowncoder]

One follow-up question, still: why does JsonParser.parse(...) accept content that does not enclose Object keys in double-quotes? I have seen test code that seems to rely on this behavior, but Javadocs:

https://static.javadoc.io/com.google.code.gson/gson/2.8.5/com/google/gson/JsonParser.html#parse-java.io.Reader-

do not really mention anything about more lenient handling. So it would seem like this SHOULD indicate exception, too. But apparently it does not. Would that part be considered a bug, or perhaps missing documentation if more lenient handling is intentional?

[vkopichenko]

One follow-up question, still: why does JsonParser.parse(...) accept content that does not enclose Object keys in double-quotes?

See #41, #372 and #1208 on current lenient situation.

[Zorayda]

Hola, he citado recientemente una duda en: https://stackoverflow.com/questions/43412261/make-gson-accept-single-objects-where-it-expects-arrays/58943838#58943838

Con respecto al mismo problema pero ya encontré el origen del problema, no sé cómo solucionarlo.

Gracias