org.codehaus.jackson.JsonParseException: Unexpected character ('�' (code 65533 / 0xfffd))

java json jackson mapper
Nikhil soni picture Nikhil soni · Jun 5, 2015 · Viewed 20.9k times · Source

I have a Json string in the database but while converting in Java object, it gives following error:

Caused by: org.codehaus.jackson.JsonParseException: Unexpected character ('�' (code 65533 / 0xfffd)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')

Json is : {"crt":"wrd","name":"7|6A TTTM"}

In java code I have configured it and have made it private (not static final)

objectMapper= new ObjectMapper();
objectMapper.configure(DeserializationConfig.Feature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);

Note: It some time converts that Json string in Object but some time gives above error. Why this unexpected result comes?

Answer

Mihnea picture Mihnea · Apr 21, 2017

Short answer solution: Remove the first occurrence of the extra added BOM text with a method, such as the following, should fix this issue:

public String cleanUpJsonBOM(String json) {
      return json.trim().replaceFirst("\ufeff", "");
  }

I had a similar issue which I documented in a blog post. Hope this help!

Related questions

How to efficiently map a org.json.JSONObject to a POJO?

This question must have been asked before, but I couldn't find it. I'm using a 3rd party library to retrieve data in JSON format. The library offers the data to me as a org.json.JSONObject. I want to map …

Read More
Jackson Library JSON Mapper to String

I have a class (A and B are my objects) public A { private List<B> b; private int c; } I have a String variable temp. So i would save in this variable the JSON String of my object. …

Read More
Convert json string without quotes into a map

I have a string that is in Json format, only none of the keys or values are surrounded by quotes. For example, I have this: String json = "{name: Bob, state: Colorado, Friends: [{ name: Dan, age: 23 }, {name: Zane, age: 24 }]}" I want …

Read More