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Parsing Json file with jackson : property names contains "_" character


Parsing Json file with jackson : property names contains "_" character

By : user2953953
Date : November 21 2020, 07:31 AM
may help you . from jackson API: "_user" is translated to user when setting PropertyNamingStrategy to PropertyNamingStrategy.LowerCaseWithUnderscoresStrategy `http://jackson.codehaus.org/1.9.9/javadoc/org/codehaus/jackson/map/PropertyNamingStrategy.LowerCaseWithUnderscoresStrategy.html
if you need help in using PropertyNamingStartegy then have a look at http://www.javacodegeeks.com/2013/04/how-to-use-propertynamingstrategy-in-jackson.html
code :


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Detecting and parsing escape character "\" from a JSON File?

Detecting and parsing escape character "\" from a JSON File?


By : Pedro Ivo Lancellott
Date : March 29 2020, 07:55 AM
Hope this helps The problem here is that google -- or at least that url -- is supplying invalid JSON1,2. The JSON library, while not rejecting the invalid JSON outright, is parsing it in a "well, let's ignore this \ nonsense and continue" manner. That is, it's not the rendering that is wrong, it is the input which is wrong.
1It is not allowed for \x to appear in a string (except if the \ is itself escaped) as \ (when not escaped) can only be followed by a small set of characters (which does not include x). Escapes for character codes must be done by \u1234 and not \x12.
code :
inputString.replaceAll("\\x(\d{2})", "\\u00$1") 
Jackson's @JsonTypeInfo(use = Id.CUSTOM, include = As.PROPERTY, property = "type") reads all fields of JSON ex

Jackson's @JsonTypeInfo(use = Id.CUSTOM, include = As.PROPERTY, property = "type") reads all fields of JSON ex


By : Pratik Gupta
Date : March 29 2020, 07:55 AM
may help you . I stepped through each line of code, but I think it's how Jackson handles polymorphism internally. , Set visible=true for @JsonTypeInfo:
code :
@JsonTypeInfo(use = Id.CUSTOM, include = As.PROPERTY, property = "type", visible=true)
Jackson error "Illegal character... only regular white space allowed" when parsing JSON

Jackson error "Illegal character... only regular white space allowed" when parsing JSON


By : Bhargav Yss
Date : March 29 2020, 07:55 AM
seems to work fine The message should be pretty self-explanatory:
There is an illegal character (in this case character code 31, i.e. the control code "Unit Separator") in the JSON you are processing.
Parsing a JSON File with same properties but different "Names"

Parsing a JSON File with same properties but different "Names"


By : user3260109
Date : March 29 2020, 07:55 AM
I hope this helps you . The allData("") does not have any JTokens. Its a KeyValuePair of [string, JToken].
Try removing the ("") from your code, and the As JToken. Like so:
code :
    For Each obj As KeyValuePair In allData
        Dim name As String = obj.Key
        Dim token As JToken = obj.Value
    Next
polymorphic deserialization of JSON with jackson, property type becomes "null"

polymorphic deserialization of JSON with jackson, property type becomes "null"


By : Abhishek
Date : March 29 2020, 07:55 AM
wish helps you I am using Jackson to convert a big Json string into various classes and subclasses. , I needed to add visible=true for the type property to show up:
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