{"id":3215,"date":"2024-05-10T11:40:37","date_gmt":"2024-05-10T11:40:37","guid":{"rendered":"https:\/\/www.skillvertex.com\/blog\/?p=3215"},"modified":"2024-05-10T11:40:37","modified_gmt":"2024-05-10T11:40:37","slug":"jackson-with-json-unrecognized-field-not-marked-as-ignorable","status":"publish","type":"post","link":"https:\/\/www.skillvertex.com\/blog\/jackson-with-json-unrecognized-field-not-marked-as-ignorable\/","title":{"rendered":"Jackson With JSON: Unrecognized Field, Not Marked As Ignorable"},"content":{"rendered":"\n<p>The error message &#8220;Unrecognized field, not marked as ignorable&#8221; typically occurs when you&#8217;re using Jackson, a popular Java library for handling JSON data. This error indicates that there is a field in your JSON data that does not correspond to a field in your Java object, and Jackson does not know how to map it.<\/p>\n\n\n\n<p>To resolve this issue, you have a few options:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Add @JsonIgnoreProperties Annotation:<\/strong> You can annotate your Java class with <code>@JsonIgnoreProperties(ignoreUnknown = true)<\/code>. This tells Jackson to ignore any unrecognized fields in the JSON data.<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   @JsonIgnoreProperties(ignoreUnknown = true)\n   public class YourObject {\n       \/\/ Your class fields\n   }<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li><strong>Add Field Mapping:<\/strong> Ensure that your Java class has fields that match the fields in your JSON data. You can use annotations like <code>@JsonProperty<\/code> to map the JSON field names to your Java class fields.<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>   public class YourObject {\n       @JsonProperty(\"jsonFieldName\")\n       private String javaFieldName;\n       \/\/ Other fields\n   }<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li><strong>Remove Unneeded Fields:<\/strong> If you don&#8217;t need some of the fields in your JSON data, you can simply remove them from the JSON string before parsing it.<\/li>\n\n\n\n<li><strong>Use a Custom Deserializer:<\/strong> In more complex cases, you can create a custom deserializer to handle JSON data that doesn&#8217;t map directly to your Java class.<\/li>\n<\/ol>\n\n\n\n<p>The exact solution depends on your specific use case and how you want to handle the unrecognized fields in your JSON data.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The error message &#8220;Unrecognized field, not marked as ignorable&#8221; typically occurs when you&#8217;re using Jackson, a popular Java library for handling JSON data. This error indicates that there is a field in your JSON data that does not correspond to a field in your Java object, and Jackson does not know how to map it. &#8230; <a title=\"Jackson With JSON: Unrecognized Field, Not Marked As Ignorable\" class=\"read-more\" href=\"https:\/\/www.skillvertex.com\/blog\/jackson-with-json-unrecognized-field-not-marked-as-ignorable\/\" aria-label=\"More on Jackson With JSON: Unrecognized Field, Not Marked As Ignorable\">Read more<\/a><\/p>\n","protected":false},"author":4,"featured_media":3216,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[224],"tags":[530],"class_list":["post-3215","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-question-answer","tag-jackson-with-json-unrecognized-field","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-33"],"_links":{"self":[{"href":"https:\/\/www.skillvertex.com\/blog\/wp-json\/wp\/v2\/posts\/3215","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.skillvertex.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.skillvertex.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.skillvertex.com\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.skillvertex.com\/blog\/wp-json\/wp\/v2\/comments?post=3215"}],"version-history":[{"count":1,"href":"https:\/\/www.skillvertex.com\/blog\/wp-json\/wp\/v2\/posts\/3215\/revisions"}],"predecessor-version":[{"id":3217,"href":"https:\/\/www.skillvertex.com\/blog\/wp-json\/wp\/v2\/posts\/3215\/revisions\/3217"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.skillvertex.com\/blog\/wp-json\/wp\/v2\/media\/3216"}],"wp:attachment":[{"href":"https:\/\/www.skillvertex.com\/blog\/wp-json\/wp\/v2\/media?parent=3215"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.skillvertex.com\/blog\/wp-json\/wp\/v2\/categories?post=3215"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.skillvertex.com\/blog\/wp-json\/wp\/v2\/tags?post=3215"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}