GSON parsing error while parsing String to hashmap

Question

I am trying to parse a string using Gson

String str = "{key=sample value}";
new Gson().fromJson(str, HashMap.class())

I am getting a JSONSyntax exception for this. If I change the string to "{key=samplevalue}" it works fine(removed space). Can anyone please explain. What should be done so that I get hashmap as "key" = "sample value"

Try adding escape character \" in your string. I.e. "{\"key\"=\"sample value\"}" — Jeel Vankhede
– Jeel Vankhede, Commented Feb 16, 2019 at 6:57

frogatto · Accepted Answer · 2019-02-17 06:57:49Z

1

In JSON specification, both key and value (if it's of type string) must be double quoted. So, in your example the valid JSON is:

{"key":"sample value"}

which in Java, " should be escaped:

String str = "{\"key\":\"sample value\"}";

edited Feb 17, 2019 at 6:57

answered Feb 16, 2019 at 10:12

frogatto

29.4k13 gold badges90 silver badges137 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

nasch Over a year ago

Besides that, the key/value separator is colon, not equals. {"key" : "value"}

DEV-Jacol · Accepted Answer · 2019-02-20 19:17:31Z

0

your code does not compile

you would have to replace class() with class it would be necessary to improve the JSON format it would be necessary to improve the JSON format by adding quotes and an apostrophe

String str = "{'key'='sample value'}";
HashMap hashMap = new Gson().fromJson(str, HashMap.class);
System.out.println(hashMap);  /// ===> {key=sample value}

or

String str = "{\"key\":\"sample value\"}";;
HashMap hashMap = new Gson().fromJson(str, HashMap.class);
System.out.println(hashMap);  /// ===> {key=sample value}

now is working

https://sites.google.com/site/gson/gson-user-guide#TOC-Using-Gson

http://tutorials.jenkov.com/java-json/gson.html#parsing-json-into-java-objects

edited Feb 20, 2019 at 19:17

answered Feb 20, 2019 at 19:08

DEV-Jacol

6176 silver badges13 bronze badges

Collectives™ on Stack Overflow

GSON parsing error while parsing String to hashmap

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related