Jackson Mismatched Input Exception

Suppose you are trying to do something like: But the output is something like: There are at least two reasons: Configuration file does not exist; Setters for MyConfiguration.class are named incorrectly or cannot be accessed.

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Unrecognized field JSON

Exception text: Most likely the code looks like this: The error is that the names of getter and setter are not consistent with the corresponding field. getVar2() and setVar2() should be named getVar1() and setVar1():

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