{"id":13387,"date":"2024-03-15T06:59:30","date_gmt":"2024-03-15T06:59:30","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-does-mybatis-plus-connect-to-the-database\/"},"modified":"2025-08-05T17:30:31","modified_gmt":"2025-08-05T17:30:31","slug":"how-does-mybatis-plus-connect-to-the-database","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-does-mybatis-plus-connect-to-the-database\/","title":{"rendered":"MyBatis Plus Database Connection Guide"},"content":{"rendered":"<p>MyBatis Plus is an ORM framework based on MyBatis, which simplifies the process of connecting to and operating with databases. Below are the steps to connect to a database:<\/p>\n<p>Add dependency: Add MyBatis Plus dependency to the project&#8217;s pom.xml file. You can search for mybatis-plus-boot-starter in the Maven Central Repository and add it to the project dependencies.<\/p>\n<pre class=\"post-pre\"><code class=\"lang-xml\">&lt;dependency&gt;\r\n    &lt;groupId&gt;com.baomidou&lt;\/groupId&gt;\r\n    &lt;artifactId&gt;mybatis-plus-boot-starter&lt;\/artifactId&gt;\r\n    &lt;version&gt;\u6700\u65b0\u7248\u672c&lt;\/version&gt;\r\n&lt;\/dependency&gt;\r\n<\/code><\/pre>\n<p>Configure data source: Configure a data source in the project&#8217;s configuration file, using any data source that conforms to the JDBC specification, such as Druid or HikariCP.<\/p>\n<p>3. Setting up MyBatis Plus: Add configuration options for MyBatis Plus in the project&#8217;s configuration file.<\/p>\n<pre class=\"post-pre\"><code class=\"lang-properties\"># \u6570\u636e\u5e93\u7c7b\u578b\r\nspring.datasource.type=com.alibaba.druid.pool.DruidDataSource\r\n# \u6570\u636e\u5e93\u8fde\u63a5\u4fe1\u606f\r\nspring.datasource.url=jdbc:mysql:\/\/localhost:3306\/mybatisplus?useUnicode=true&amp;characterEncoding=utf8&amp;autoReconnect=true&amp;useSSL=false\r\nspring.datasource.username=root\r\nspring.datasource.password=123456\r\n# \u6570\u636e\u5e93\u9a71\u52a8\r\nspring.datasource.driver-class-name=com.mysql.jdbc.Driver\r\n\r\n# MyBatis Plus \u914d\u7f6e\u9879\r\n# \u6307\u5b9a MyBatis Plus \u7684 mapper \u626b\u63cf\u8def\u5f84\r\nmybatis-plus.mapper-locations=classpath*:mapper\/**\/*.xml\r\n# \u5b9e\u4f53\u7c7b\u626b\u63cf\u8def\u5f84\r\nmybatis-plus.type-aliases-package=com.example.entity\r\n# MyBatis Plus \u65e5\u5fd7\u914d\u7f6e\r\nmybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl\r\n<\/code><\/pre>\n<p>Create entity classes: create classes corresponding to database tables, and use annotations such as @TableName to specify the table name and @TableField to specify the field names in the database.<\/p>\n<pre class=\"post-pre\"><code class=\"lang-java\">@Data\r\n@TableName(\"user\")\r\npublic class User {\r\n    @TableId(type = IdType.AUTO)\r\n    private Long id;\r\n    private String name;\r\n    private Integer age;\r\n    private String email;\r\n}\r\n<\/code><\/pre>\n<p>Write the Mapper interface: Create a Mapper interface for the corresponding entity class. By inheriting the BaseMapper interface, you can easily access common database operations methods.<\/p>\n<pre class=\"post-pre\"><code class=\"lang-java\">public interface UserMapper extends BaseMapper&lt;User&gt; {\r\n\r\n}\r\n<\/code><\/pre>\n<p>Usage: Inject the corresponding Mapper interface where database operations are needed, and you can use the database operation methods provided by MyBatis Plus.<\/p>\n<pre class=\"post-pre\"><code class=\"lang-java\">@Service\r\npublic class UserServiceImpl implements UserService {\r\n    @Autowired\r\n    private UserMapper userMapper;\r\n\r\n    @Override\r\n    public User getUserById(Long userId) {\r\n        return userMapper.selectById(userId);\r\n    }\r\n\r\n    @Override\r\n    public List&lt;User&gt; getUserList() {\r\n        return userMapper.selectList(null);\r\n    }\r\n\r\n    @Override\r\n    public int addUser(User user) {\r\n        return userMapper.insert(user);\r\n    }\r\n\r\n    @Override\r\n    public int updateUser(User user) {\r\n        return userMapper.updateById(user);\r\n    }\r\n\r\n    @Override\r\n    public int deleteUser(Long userId) {\r\n        return userMapper.deleteById(userId);\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>These are the fundamental steps for connecting to a database using MyBatis Plus: configuring the data source and MyBatis Plus settings, and then using the corresponding Mapper interface to perform database operations.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MyBatis Plus is an ORM framework based on MyBatis, which simplifies the process of connecting to and operating with databases. Below are the steps to connect to a database: Add dependency: Add MyBatis Plus dependency to the project&#8217;s pom.xml file. You can search for mybatis-plus-boot-starter in the Maven Central Repository and add it to the [&hellip;]<\/p>\n","protected":false},"author":5,"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":[1788,2797,9688,1459,3159],"class_list":["post-13387","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-database-connection","tag-java-orm","tag-maven-configuration","tag-mybatis","tag-mybatis-plus"],"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 Plus Database Connection Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to connect MyBatis Plus to your database. 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