一.SpringBoot整合Mybatis操作数据库:
第一步:添加依赖:
<dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.1.1</version> </dependency>
第二步:在配置文件application.properties中配置数据源信息:
#DB Configation
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/springboot?serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=root
# JPAConfiguration
spring.jpa.database=MySQL
spring.jpa.show-sql=true
spring.jpa.generate-ddl=true
第三步:编写实体类、mapper接口、mapeer映射文件
第四步:手动配置mybatis的包扫描
在主启动类添加@MapperScan注解,否者会报如下错误:
错误:org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.offcn.mapper.UserMapper.getUserList
注意:Mapper.xml映射文件要放在resources目录下,或者在pom.xml配置如下代码:
<build> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.*</include> </includes> <filtering>false</filtering> </resource> </resources> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build>