After using springboot to integrate mybatis-plus, calling the custom method is normal, and calling the built-in method in BaseMapper reports an error as follows:
org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): cn.rkang.enterprise.mapper.EmployeeInfoMapper.selectOne
at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:227) ~[mybatis-3.4.6.jar:3.4.6]
at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:49) ~[mybatis-3.4.6.jar:3.4.6]
at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:65) ~[mybatis-3.4.6.jar:3.4.6]
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:58) ~[mybatis-3.4.6.jar:3.4.6]
at com.sun.proxy.$Proxy70.selectOne(Unknown Source) ~[na:na]
at com.baomidou.mybatisplus.extension.service.impl.ServiceImpl.getOne(ServiceImpl.java:259) ~[mybatis-plus-extension-3.1.1.jar:3.1.1]
at com.baomidou.mybatisplus.extension.service.IService.getOne(IService.java:192) ~[mybatis-plus-extension-3.1.1.jar:3.1.1]
at com.baomidou.mybatisplus.extension.service.IService$$FastClassBySpringCGLIB$$f8525d18.invoke(<generated>) ~[mybatis-plus-extension-3.1.1.jar:3.1.1]
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:684) ~[spring-aop-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at cn.rkang.enterprise.local.service.EmployeeInfoService$$EnhancerBySpringCGLIB$$7e12f21b.getOne(<generated>) ~[classes/:na]
Follow up the source code and found that methodProxy.invoke(target, argsToUse) reported an error,
if (chain.isEmpty() && Modifier.isPublic(method.getModifiers())) {
Object[] argsToUse = AopProxyUtils.adaptArgumentsIfNecessary(method, args);
retVal = methodProxy.invoke(target, argsToUse);
} else {
retVal = (new CglibAopProxy.CglibMethodInvocation(proxy, target, method, args, targetClass, chain, methodProxy)).proceed();
}
When assembling sqlmand in the invoke method, the MappedStatement is not assembled successfully and is always null
public SqlCommand(Configuration configuration, Class<?> mapperInterface, Method method) {
String methodName = method.getName();
Class<?> declaringClass = method.getDeclaringClass();
MappedStatement ms = this.resolveMappedStatement(mapperInterface, methodName, declaringClass, configuration);
if (ms == null) {
if (method.getAnnotation(Flush.class) == null) {
throw new BindingException("Invalid bound statement (not found): " + mapperInterface.getName() + "." + methodName);
}
this.name = null;
this.type = SqlCommandType.FLUSH;
} else {
this.name = ms.getId();
this.type = ms.getSqlCommandType();
if (this.type == SqlCommandType.UNKNOWN) {
throw new BindingException("Unknown execution method for: " + this.name);
}
}
}
Solution: Replace the sqlSessionFactory of mybatis with MybatisSqlSessionFactoryBean of mybatis-plusd, and add the configuration class MybatisPlusConfig package cn.rkang.enterprise.common.config; import com.baomidou.mybatisplus.core.MybatisConfiguration; import com.baomidou.mybatisplus.core.MybatisXMLLanguageDriver; import com.baomidou.mybatisplus.core.toolkit.ObjectUtils; import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor; import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean; import org.apache.ibatis.mapping.DatabaseIdProvider; import org.apache.ibatis.plugin.Interceptor; import org.mybatis.spring.boot.autoconfigure.MybatisProperties; import org.mybatis.spring.boot.autoconfigure.SpringBootVFS; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.core.io.DefaultResourceLoader; import org.springframework.core.io.ResourceLoader; import org.springframework.util.StringUtils; import javax.sql.DataSource; @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 paging plugin */ @Bean public PaginationInterceptor paginationInterceptor () { PaginationInterceptor page PaginationInterceptor = new (); page.setDialectType("mysql"); return page; } /** * All resources that have been automatically loaded by mybatis-autoconfigure are used here. Do not specify manually * The configuration file is synchronized with the configuration file of mybatis-boot * @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())); } if (!ObjectUtils.isEmpty(this.interceptors)) { mybatisPlus.setPlugins(this.interceptors); } MybatisConfiguration mc = new MybatisConfiguration(); mc.setDefaultScriptingLanguage(MybatisXMLLanguageDriver.class); //The database field is designed to name the camel case, the default open camel case to underline will report an error that the field cannot be found mc.setMapUnderscoreToCamelCase (false); 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; } } problem solved