spring boot整合mybatis-plus使用mysql和Oracle多数据源的时候，遇到如下问题:
mybatis-plus今天遇到一个问题，就是mybatis 没有读取到mapper.xml 文件。
特此记录一下，问题如下：
org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.husy.mapper.SystemUserMapper.findUserByName
at com.baomidou.mybatisplus.core.override.MybatisMapperMethod$SqlCommand.<init>(MybatisMapperMethod.java:242)
at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.<init>(MybatisMapperMethod.java:54)
at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.lambda$cachedMapperMethod$0(MybatisMapperProxy.java:65)
at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)
at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.cachedMapperMethod(MybatisMapperProxy.java:65)
at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.invoke(MybatisMapperProxy.java:60)
at com.sun.proxy.$Proxy72.findUserByName(Unknown Source)
at com.husy.service.impl.SystemUserServiceImpl.findUserByName(SystemUserServiceImpl.java:23)首先我放xml的包的是没问题的，而是引入的架包和配置问题，问题配置如下:
mybatis:
mapper-locations: classpath:mapper/*.xml
type-aliases-package: com.msl.moniter.entity解决方法：请将mybatis-plus改成mybatis,mybatis,mybtis,重要的说三遍，
必要的架包如下
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.1.2</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-core</artifactId>
<version>3.1.2</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-autoconfigure</artifactId>
<version>2.1.0</version>
</dependency>注意第一个是mybatis-spring-boot-start ,不是mybatisplus-spring-boot-start
还要在mybatis配置文件里声明MybatisSqlSessionFactoryBean，至此问题解决
@Configuration
public class MybatisPlusConfig {
@Autowired
private DataSource dataSource;
@Autowired
private MybatisProperties properties;
@Autowired
private ResourceLoader resourceLoader = new DefaultResourceLoader();
@Autowired(required = false)
private Interceptor[] interceptors;
@Autowired(required = false)
private DatabaseIdProvider databaseIdProvider;
/**
* mybatis-plus分页插件
*/
@Bean
public PaginationInterceptor paginationInterceptor() {
PaginationInterceptor page = new PaginationInterceptor();
page.setDialectType("mysql");
return page;
}
/**
* 这里全部使用mybatis-autoconfigure 已经自动加载的资源。不手动指定
* 配置文件和mybatis-boot的配置文件同步
* @return
*/
@Bean
public MybatisSqlSessionFactoryBean mybatisSqlSessionFactoryBean() {
MybatisSqlSessionFactoryBean mybatisPlus = new MybatisSqlSessionFactoryBean();
mybatisPlus.setDataSource(dataSource);
mybatisPlus.setVfs(SpringBootVFS.class);
if (StringUtils.hasText(this.properties.getConfigLocation())) {
mybatisPlus.setConfigLocation(this.resourceLoader.getResource(this.properties.getConfigLocation()));
}
mybatisPlus.setConfiguration(properties.getConfiguration());
if (!ObjectUtils.isEmpty(this.interceptors)) {
mybatisPlus.setPlugins(this.interceptors);
}
MybatisConfiguration mc = new MybatisConfiguration();
mc.setDefaultScriptingLanguage(MybatisXMLLanguageDriver.class);
mybatisPlus.setConfiguration(mc);
if (this.databaseIdProvider != null) {
mybatisPlus.setDatabaseIdProvider(this.databaseIdProvider);
}
if (StringUtils.hasLength(this.properties.getTypeAliasesPackage())) {
mybatisPlus.setTypeAliasesPackage(this.properties.getTypeAliasesPackage());
}
if (StringUtils.hasLength(this.properties.getTypeHandlersPackage())) {
mybatisPlus.setTypeHandlersPackage(this.properties.getTypeHandlersPackage());
}
if (!ObjectUtils.isEmpty(this.properties.resolveMapperLocations())) {
mybatisPlus.setMapperLocations(this.properties.resolveMapperLocations());
}
return mybatisPlus;
}
}
不知道是造作不正确还是jar问题，如下验证没有通过
经过查阅：
- 如果引用mybatis-plus-boot-starter 依赖，需要配置 mybatis-plus.mapper-locations
- 如果引用mybatis-plus 依赖，需要配置 mybatis.mapper-locations
参考：
