org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): xxx.xxx.xxx.service.ReDemoService.selectByPrimaryKey
spring boot 2.0 做 mybatis 多数据源配置出了以上错误:
网上给出3种解决方案:
1.xxxMapper.xml 中namespace和接口不一致导致.
2.MapperLocations没有扫描到xml文件.
3.idea的坑,pom.xml配置resource将xml文件打包的时候加入到类路径下
可是~... 3种都试了.都不能解决bug.最后发现一个问题
ReDemoService.selectByPrimaryKey() .service接口怎么被mybatis注册为映射接口了
针对如图目录结构. 所以在整合扫包的时候要强制限定扫描规则
java bean 配置方式
@Configuration
@MapperScan(basePackages = "com.mm2s",annotationClass = Mapper.class) // 需要在接口上加上Mapper注解
//@MapperScan(basePackages = "**.mapper")
public class MybatisReConfig {
@Primary
@Bean("reDataSource")
@ConfigurationProperties(prefix = "spring.datasource.h2-re")
public DataSource reDataSource() {
return DataSourceBuilder.create().build();
}
@Bean
@Primary
public SqlSessionFactory reSqlSessionFactory() throws Exception {
SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
factoryBean.setDataSource(reDataSource());
PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
factoryBean.setMapperLocations(resolver.getResources("classpath:mybatis/ReMappings/**/*Mapper.xml"));
factoryBean.setConfigLocation(resolver.getResource("classpath:mybatis/mybatis-config.xml"));
return factoryBean.getObject();
}
@Bean
@Primary
public SqlSessionTemplate reSqlSessionTemplate() throws Exception {
return new SqlSessionTemplate(reSqlSessionFactory());
}
}
xml 配置方式
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"
p:dataSource-ref="dataSource"
p:mapperLocations="classpath:mybatis/mappers/*.xml">
</bean>
<!-- 扫描项目包下含有Mapper注解的类作为mybatis的映射接口-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"
p:basePackage="com.mm2s"
p:annotationClass="org.apache.ibatis.annotations.Mapper"
p:sqlSessionFactoryBeanName="sqlSessionFactory"/>
<!-- 扫描名为mapper包下的类作为mybatis的映射接口
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"
p:basePackage="**.mapper"
p:sqlSessionFactoryBeanName="sqlSessionFactory"/> -->
解决方法4:
@MapperScan中加入扫包限定annotationClass = Mapper.class 在xxxMappr加入@Mapper
@MapperScan扫描包名为mapper下的类 basePackages = "**.mapper"