UnrecognizedPropertyException: Unrecognized field not marked as ignorable at Source: org.apache.catalina.connector.CoyoteInputStream@14ec141

I can make following observations after looking at GroupMemberMap Class:

1. Constructor is missing.
2. Getter-Setter for the UserId is incorrect.

Also, you can add optional @JsonIgnoreProperties to ignore all other unknown fields.

Here is the corrected code snippet:

package com.tazligen.model;@XmlRootElement@JsonIgnoreProperties(ignoreUnknown = true)public class GroupMemberMap {    @JsonProperty("userId")    private String userId;    @JsonProperty("groupId")    private String groupId;    /* Add Constructor */    public GroupMemberMap() {}    /* Corrected Name */    public String getUserId() {        return userId;    }    /* Corrected Name */    public void setUserId(String userId) {        this.userId = userId;    }    public String getGroupId() {        return groupId;    }    public void setGroupId(String groupId) {        this.groupId = groupId;    }    }

I was using lombok to generate getters and setters with @Getter and @Setter annotation. Now what solved a similar issue for me was converting data type of a field from primary java type boolean to Boolean. Lombok only generated a getter for it only if I used Boolean fieldName.

Just modify userId and groupId public. By default, Jackson works on public member variables.

I think JsonIgnoreProperties is not solution as it is used to ignore whatever it doesn't recognize.

public String userId;public String groupId;