{"id":3838,"date":"2024-03-13T07:34:11","date_gmt":"2024-03-13T07:34:11","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-utilize-custom-annotations-in-mybatis\/"},"modified":"2025-07-30T21:49:38","modified_gmt":"2025-07-30T21:49:38","slug":"how-to-utilize-custom-annotations-in-mybatis","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-utilize-custom-annotations-in-mybatis\/","title":{"rendered":"MyBatis Custom Annotations: Complete Guide"},"content":{"rendered":"<p>To use custom annotations in MyBatis, you first need to define an annotation and mark it where needed. Next, configure the corresponding handler in MyBatis configuration file so that MyBatis can recognize and process these custom annotations.<\/p>\n<p>Here is a simple example:<\/p>\n<p>Firstly, define a custom annotation.<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">@Retention(RetentionPolicy.RUNTIME)<\/span>\r\n<span class=\"hljs-meta\">@Target(ElementType.METHOD)<\/span>\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-meta\">@interface<\/span> MyAnnotation {\r\n    String <span class=\"hljs-title function_\">value<\/span><span class=\"hljs-params\">()<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>Then annotate this custom annotation on the method in the Mapper interface.<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">interface<\/span> <span class=\"hljs-title class_\">UserMapper<\/span> {\r\n    <span class=\"hljs-meta\">@MyAnnotation(\"getUserById\")<\/span>\r\n    User <span class=\"hljs-title function_\">getUserById<\/span><span class=\"hljs-params\">(<span class=\"hljs-type\">int<\/span> id)<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>Next, configure the corresponding handler in the MyBatis configuration file.<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">plugins<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">plugin<\/span> <span class=\"hljs-attr\">interceptor<\/span>=<span class=\"hljs-string\">\"org.apache.ibatis.plugin.AnnotationPlugin\"<\/span>&gt;<\/span>\r\n        <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">property<\/span> <span class=\"hljs-attr\">name<\/span>=<span class=\"hljs-string\">\"annotation\"<\/span> <span class=\"hljs-attr\">value<\/span>=<span class=\"hljs-string\">\"com.example.MyAnnotation\"<\/span>\/&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">plugin<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">plugins<\/span>&gt;<\/span>\r\n<\/code><\/pre>\n<p>This way, when MyBatis executes the methods in the Mapper interface, it will check if there is an @MyAnnotation annotation on the method. If there is, it will then execute the corresponding processing logic.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>To use custom annotations in MyBatis, you first need to define an annotation and mark it where needed. Next, configure the corresponding handler in MyBatis configuration file so that MyBatis can recognize and process these custom annotations. Here is a simple example: Firstly, define a custom annotation. @Retention(RetentionPolicy.RUNTIME) @Target(ElementType.METHOD) public @interface MyAnnotation { String value(); [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[2740,2689,2739,2742,2741],"class_list":["post-3838","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-java-annotations","tag-mybatis-configuration","tag-mybatis-custom-annotations","tag-mybatis-tutorial","tag-orm-framework"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>MyBatis Custom Annotations: Complete Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn to define, apply &amp; configure custom annotations in MyBatis with step-by-step examples.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-to-utilize-custom-annotations-in-mybatis\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MyBatis Custom Annotations: Complete Guide\" \/>\n<meta property=\"og:description\" content=\"Learn to define, apply &amp; configure custom annotations in MyBatis with step-by-step examples.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-to-utilize-custom-annotations-in-mybatis\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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