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解决办法 application.yml mybatis-plus: configuration: map-underscore-to-camel-case: false # 禁止大写变小写时自动添加下划线

Mybatis Plus分页官网:https://mp.baomidou.com/guide/page.html 1.在已具备Mybatis功能后,Spring Boot配置文件添加配置 application.yml mybatis-plus: mapper-locations: classpath:mapping/*.xml type-aliases-package: com.cx.mybatis.bean 2.添加MybatisPlusConfig配置类 MybatisPlusConfig

Mybatis Plus官网:https://mp.baomidou.com/ 优点:对于单数据库表操作便利,且不影响原有Mybatis功能,只做增强 1.添加Mybatis Plus依赖 pom.xml <!--Mybatis Plus--> <!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-boot-starter --> <dependency>

1.添加generator插件 pom.xml <!-- mybatis generator 自动生成代码插件 --> <plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId>

1.创建Spring Boot项目,添加Mybatis依赖 pom.xml <!--Mybatis Spring Boot--> <!-- https://mvnrepository.com/artifact/org.mybatis.spring.boot/mybatis-spring-boot-starter --> <dependency> <groupId>org.mybatis.spring.boot&l

1.数据库 CREATE TABLE `NewTable` ( `id` int(11) NOT NULL AUTO_INCREMENT , `username` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL , `password` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL , `role_id

1.一对一结果映射 ①数据库表 t_user表 CREATE TABLE `NewTable` ( `id` int(11) NOT NULL AUTO_INCREMENT , `username` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL , `password` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAU

1.公用映射类 UserMapper /** * 根据参数条件查询User * @param user * @return */ User getUserByParameter(User user); /** * 修改一条User记录 * @param user */ void update(User user); 2.if运用 <select id="getUserByParameter" resultT

1.添加MyBatis相关依赖 pom.xml配置 <!--MyBatis依赖--> <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</art