{"id":2275,"date":"2024-03-12T09:31:45","date_gmt":"2024-03-12T09:31:45","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-does-mybatis-return-a-list-collection\/"},"modified":"2024-04-19T15:38:51","modified_gmt":"2024-04-19T15:38:51","slug":"how-does-mybatis-return-a-list-collection","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-does-mybatis-return-a-list-collection\/","title":{"rendered":"How does MyBatis return a list collection?"},"content":{"rendered":"

When using MyBatis<\/a> to query a database, you can define a method that returns a List to return a collection of query results. Here is a simple example:<\/p>\n

    \n
  1. Firstly, define a query method in the Mapper interface, for example:<\/li>\n<\/ol>\n
    public<\/span> interface<\/span> UserMapper<\/span> {\r\n    List<User> selectAllUsers<\/span>()<\/span>;\r\n}\r\n<\/code><\/pre>\n
      \n
    1. Write the corresponding SQL statement in the Mapper XML file, for example:<\/li>\n<\/ol>\n
      <select<\/span> id<\/span>=\"selectAllUsers\"<\/span> resultType<\/span>=\"User\"<\/span>><\/span>\r\n    SELECT * FROM users;\r\n<\/select<\/span>><\/span>\r\n<\/code><\/pre>\n
        \n
      1. When calling methods in the Mapper interface from the calling end, retrieve the returned List collection, for example:<\/li>\n<\/ol>\n
        SqlSession<\/span> sqlSession<\/span> =<\/span> sqlSessionFactory.openSession();\r\nUserMapper<\/span> userMapper<\/span> =<\/span> sqlSession.getMapper(UserMapper.class);\r\nList<User> userList = userMapper.selectAllUsers();\r\n<\/code><\/pre>\n
        In this way, you can query the database using MyBatis and return the results as a List collection.<\/p>\n
         <\/p>\n
        More tutorials<\/p>\n
        How to use custom loss functions in Keras.(Opens in a new browser tab)<\/span><\/a><\/p>\n
        Cacti system handle data collection at varying time intervals?(Opens in a new browser tab)<\/span><\/a><\/p>\n
        How to handle a null return from selectOne in MyBatis?(Opens in a new browser tab)<\/span><\/a><\/p>\n
        What are some common issues and solutions for the Cacti system?(Opens in a new browser tab)<\/span><\/a><\/p>\n
        What is the usage of selectOne in MyBatis?(Opens in a new browser tab)<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
        When using MyBatis to query a database, you can define a method that returns a List to return a collection of query results. Here is a simple example: Firstly, define a query method in the Mapper interface, for example: public interface UserMapper { List<User> selectAllUsers(); } Write the corresponding SQL statement in the Mapper XML […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-2275","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nHow does MyBatis return a list collection? - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"When using MyBatis to query a database, you can define a method that returns a List to return a collection of query results.\" \/>\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-does-mybatis-return-a-list-collection\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How does MyBatis return a list collection?\" \/>\n<meta property=\"og:description\" content=\"When using MyBatis to query a database, you can define a method that returns a List to return a collection of query results.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-does-mybatis-return-a-list-collection\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-12T09:31:45+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-19T15:38:51+00:00\" \/>\n<meta name=\"author\" content=\"Emily Johnson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Emily Johnson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-does-mybatis-return-a-list-collection\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-does-mybatis-return-a-list-collection\/\"},\"author\":{\"name\":\"Emily Johnson\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/3b041b19cffc258705478ecfab895378\"},\"headline\":\"How does MyBatis return a list collection?\",\"datePublished\":\"2024-03-12T09:31:45+00:00\",\"dateModified\":\"2024-04-19T15:38:51+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-does-mybatis-return-a-list-collection\/\"},\"wordCount\":173,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-does-mybatis-return-a-list-collection\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-does-mybatis-return-a-list-collection\/\",\"name\":\"How does MyBatis return a list collection? 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