Implementing case insensitive settings when Jackson deserializes
- 2021-10-13 07:23:26
- OfStack
Common configuration
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.configure(Feature.IGNORE_UNKNOWN,true);
objectMapper.configure(Feature.WRITE_BIGDECIMAL_AS_PLAIN,true);
objectMapper.configure(JsonParser.Feature.ALLOW_MISSING_VALUES,true);
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,false);
objectMapper.configure(MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES,false);// Case desensitization Default to false Need to read tru
Reference
com.fasterxml.jackson.databind.MapperFeature#ACCEPT_CASE_INSENSITIVE_PROPERTIES
Using annotations: Examples
public static void main(String[] args) throws IOException {
String x = "{\n"
+ " \"TToUserName\":\"gh_a5624dd2db4e\",\n"
+ " \"FFromUserName\":\"ochvq0Kn35VlnTAcIJ3fRBAZTQUY\""
+ " }";
ObjectMapper objectMapper = new ObjectMapper();
Result map = objectMapper.readValue(x, Result.class);
System.out.println(map);
objectMapper.writeValue(System.out,map);
}
private static class Result {
private String ToUserName;
private String FromUserName;
@JsonProperty("ToUserName")
public String getToUserName() {
return ToUserName;
}
@JsonProperty("TToUserName")
public void setToUserName(String toUserName) {
ToUserName = toUserName;
}
@JsonProperty("FromUserName")
public String getFromUserName() {
return FromUserName;
}
@JsonProperty("FFromUserName")
public void setFromUserName(String fromUserName) {
FromUserName = fromUserName;
}
}
Jackson Conversion Case Problem
Jackson converts uppercase to lowercase when converting json
Solution:
1. Add: @ JsonProperty to the variable
2. Add @ JsonIgnore to the set/get method