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spring boot 测试 mybatis mapper类

• 针对 mybatis plus
• 不启动 webserver
• 指定加载 xml 【过滤 “classpath*:/mapper/**/*.xml” 下的xml】, mapper xml文件名和mapper java文件名称要一样，是根据文件名称过滤的。默认情况加载和解析所有mapper.xml

自定义 @MapperTest注解

/*** mapper 测试* 1.不启动 web容器* 2.指定加载xml* @Date: 2024/12/2 9:16*/
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@Documented
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.NONE, classes = {DataSourceAutoConfiguration.class,MybatisPlusTestAutoConfiguration.class,DataSource.class,SqlSessionFactory.class
})
@MapperScan
@Import(MybatisPlusTestAutoConfiguration.AutoConfiguredMapperScannerTestRegistrar.class)
public @interface MapperTest {/*** 指定要加载的 Mapper class* @return*/@AliasFor(annotation = MapperScan.class,attribute = "basePackageClasses")Class<?>[] mapperClasses() default {};}

自定义 MybatisPlusTestAutoConfiguration

大部分 copy MybatisPlusAutoConfiguration, 就是增加过滤条件

import com.baomidou.mybatisplus.autoconfigure.*;
import com.baomidou.mybatisplus.core.MybatisConfiguration;
import com.baomidou.mybatisplus.core.config.GlobalConfig;
import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import com.baomidou.mybatisplus.core.incrementer.IKeyGenerator;
import com.baomidou.mybatisplus.core.incrementer.IdentifierGenerator;
import com.baomidou.mybatisplus.core.injector.ISqlInjector;
import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;
import org.apache.ibatis.mapping.DatabaseIdProvider;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.scripting.LanguageDriver;
import org.apache.ibatis.session.ExecutorType;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.type.TypeHandler;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnSingleCandidate;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
import org.springframework.core.annotation.AnnotationAttributes;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import org.springframework.core.type.AnnotationMetadata;
import org.springframework.util.Assert;
import org.springframework.util.CollectionUtils;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;import javax.sql.DataSource;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Optional;
import java.util.function.Consumer;
import java.util.stream.Collectors;/*** {@link EnableAutoConfiguration Auto-Configuration} for Mybatis. Contributes a* {@link SqlSessionFactory} and a {@link SqlSessionTemplate}.* <p>* If {@link org.mybatis.spring.annotation.MapperScan} is used, or a* configuration file is specified as a property, those will be considered,* otherwise this auto-configuration will attempt to register mappers based on* the interface definitions in or under the root auto-configuration package.* </p>* <p> copy from {@link org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration}</p>** @author Eddú Meléndez* @author Josh Long* @author Kazuki Shimizu* @author Eduardo Macarrón*/
@Configuration
@ConditionalOnClass({SqlSessionFactory.class, SqlSessionFactoryBean.class})
@ConditionalOnSingleCandidate(DataSource.class)
@EnableConfigurationProperties(MybatisPlusProperties.class)
@AutoConfigureAfter({DataSourceAutoConfiguration.class, MybatisPlusLanguageDriverAutoConfiguration.class})
public class MybatisPlusTestAutoConfiguration implements InitializingBean {private static final Logger logger = LoggerFactory.getLogger(MybatisPlusTestAutoConfiguration.class);private final MybatisPlusProperties properties;private final Interceptor[] interceptors;private final TypeHandler[] typeHandlers;private final LanguageDriver[] languageDrivers;private final ResourceLoader resourceLoader;private final DatabaseIdProvider databaseIdProvider;private final List<ConfigurationCustomizer> configurationCustomizers;private final List<MybatisPlusPropertiesCustomizer> mybatisPlusPropertiesCustomizers;private final ApplicationContext applicationContext;private static List<String> mapperClassResource = new ArrayList<>();public MybatisPlusTestAutoConfiguration(MybatisPlusProperties properties,ObjectProvider<Interceptor[]> interceptorsProvider,ObjectProvider<TypeHandler[]> typeHandlersProvider,ObjectProvider<LanguageDriver[]> languageDriversProvider,ResourceLoader resourceLoader,ObjectProvider<DatabaseIdProvider> databaseIdProvider,ObjectProvider<List<ConfigurationCustomizer>> configurationCustomizersProvider,ObjectProvider<List<MybatisPlusPropertiesCustomizer>> mybatisPlusPropertiesCustomizerProvider,ApplicationContext applicationContext) {this.properties = properties;this.interceptors = interceptorsProvider.getIfAvailable();this.typeHandlers = typeHandlersProvider.getIfAvailable();this.languageDrivers = languageDriversProvider.getIfAvailable();this.resourceLoader = resourceLoader;this.databaseIdProvider = databaseIdProvider.getIfAvailable();this.configurationCustomizers = configurationCustomizersProvider.getIfAvailable();this.mybatisPlusPropertiesCustomizers = mybatisPlusPropertiesCustomizerProvider.getIfAvailable();this.applicationContext = applicationContext;}@Overridepublic void afterPropertiesSet() {if (!CollectionUtils.isEmpty(mybatisPlusPropertiesCustomizers)) {mybatisPlusPropertiesCustomizers.forEach(i -> i.customize(properties));}checkConfigFileExists();}private void checkConfigFileExists() {if (this.properties.isCheckConfigLocation() && StringUtils.hasText(this.properties.getConfigLocation())) {Resource resource = this.resourceLoader.getResource(this.properties.getConfigLocation());Assert.state(resource.exists(),"Cannot find config location: " + resource + " (please add config file or check your Mybatis configuration)");}}@SuppressWarnings("SpringJavaInjectionPointsAutowiringInspection")@Bean@ConditionalOnMissingBeanpublic SqlSessionFactory sqlSessionFactory(DataSource dataSource) throws Exception {// TODO 使用 MybatisSqlSessionFactoryBean 而不是 SqlSessionFactoryBeanMybatisSqlSessionFactoryBean factory = new MybatisSqlSessionFactoryBean();factory.setDataSource(dataSource);factory.setVfs(SpringBootVFS.class);if (StringUtils.hasText(this.properties.getConfigLocation())) {factory.setConfigLocation(this.resourceLoader.getResource(this.properties.getConfigLocation()));}applyConfiguration(factory);if (this.properties.getConfigurationProperties() != null) {factory.setConfigurationProperties(this.properties.getConfigurationProperties());}if (!ObjectUtils.isEmpty(this.interceptors)) {factory.setPlugins(this.interceptors);}if (this.databaseIdProvider != null) {factory.setDatabaseIdProvider(this.databaseIdProvider);}if (StringUtils.hasLength(this.properties.getTypeAliasesPackage())) {factory.setTypeAliasesPackage(this.properties.getTypeAliasesPackage());}if (this.properties.getTypeAliasesSuperType() != null) {factory.setTypeAliasesSuperType(this.properties.getTypeAliasesSuperType());}if (StringUtils.hasLength(this.properties.getTypeHandlersPackage())) {factory.setTypeHandlersPackage(this.properties.getTypeHandlersPackage());}if (!ObjectUtils.isEmpty(this.typeHandlers)) {factory.setTypeHandlers(this.typeHandlers);}if (!ObjectUtils.isEmpty(this.properties.resolveMapperLocations())) {Resource[] resources = this.properties.resolveMapperLocations();if (!CollectionUtils.isEmpty(mapperClassResource)){List<Resource> collect = Arrays.stream(resources).filter(r -> {String f = r.getFilename().substring(0, r.getFilename().lastIndexOf("."));// 过滤 xmlif (mapperClassResource.contains(f)) {return true;}return false;}).peek(r -> {logger.info("load xml: {}", r.getFilename());}).collect(Collectors.toList());if (!CollectionUtils.isEmpty(collect)){factory.setMapperLocations(collect.toArray(new Resource[0]));}else {factory.setMapperLocations(resources);}}else {factory.setMapperLocations(resources);}}// TODO 对源码做了一定的修改(因为源码适配了老旧的mybatis版本,但我们不需要适配)Class<? extends LanguageDriver> defaultLanguageDriver = this.properties.getDefaultScriptingLanguageDriver();if (!ObjectUtils.isEmpty(this.languageDrivers)) {factory.setScriptingLanguageDrivers(this.languageDrivers);}Optional.ofNullable(defaultLanguageDriver).ifPresent(factory::setDefaultScriptingLanguageDriver);// TODO 自定义枚举包if (StringUtils.hasLength(this.properties.getTypeEnumsPackage())) {factory.setTypeEnumsPackage(this.properties.getTypeEnumsPackage());}// TODO 此处必为非 NULLGlobalConfig globalConfig = this.properties.getGlobalConfig();// TODO 注入填充器this.getBeanThen(MetaObjectHandler.class, globalConfig::setMetaObjectHandler);// TODO 注入主键生成器this.getBeanThen(IKeyGenerator.class, i -> globalConfig.getDbConfig().setKeyGenerator(i));// TODO 注入sql注入器this.getBeanThen(ISqlInjector.class, globalConfig::setSqlInjector);// TODO 注入ID生成器this.getBeanThen(IdentifierGenerator.class, globalConfig::setIdentifierGenerator);// TODO 设置 GlobalConfig 到 MybatisSqlSessionFactoryBeanfactory.setGlobalConfig(globalConfig);return factory.getObject();}/*** 检查spring容器里是否有对应的bean,有则进行消费** @param clazz    class* @param consumer 消费* @param <T>      泛型*/private <T> void getBeanThen(Class<T> clazz, Consumer<T> consumer) {if (this.applicationContext.getBeanNamesForType(clazz, false, false).length > 0) {consumer.accept(this.applicationContext.getBean(clazz));}}// TODO 入参使用 MybatisSqlSessionFactoryBeanprivate void applyConfiguration(MybatisSqlSessionFactoryBean factory) {// TODO 使用 MybatisConfigurationMybatisConfiguration configuration = this.properties.getConfiguration();if (configuration == null && !StringUtils.hasText(this.properties.getConfigLocation())) {configuration = new MybatisConfiguration();}if (configuration != null && !CollectionUtils.isEmpty(this.configurationCustomizers)) {for (ConfigurationCustomizer customizer : this.configurationCustomizers) {customizer.customize(configuration);}}factory.setConfiguration(configuration);}@Bean@ConditionalOnMissingBeanpublic SqlSessionTemplate sqlSessionTemplate(SqlSessionFactory sqlSessionFactory) {ExecutorType executorType = this.properties.getExecutorType();if (executorType != null) {return new SqlSessionTemplate(sqlSessionFactory, executorType);} else {return new SqlSessionTemplate(sqlSessionFactory);}}/*** This will just scan the same base package as Spring Boot does. If you want more power, you can explicitly use* {@link org.mybatis.spring.annotation.MapperScan} but this will get typed mappers working correctly, out-of-the-box,* similar to using Spring Data JPA repositories.*/public static class AutoConfiguredMapperScannerTestRegistrar implements ImportBeanDefinitionRegistrar {@Overridepublic void registerBeanDefinitions(AnnotationMetadata importingClassMetadata, BeanDefinitionRegistry registry) {//从 MapperTest 加载要过滤的 mapperAnnotationAttributes mapperScanAttrs = AnnotationAttributes.fromMap(importingClassMetadata.getAnnotationAttributes(MapperTest.class.getName()));List<String> collect = Arrays.stream(mapperScanAttrs.getClassArray("mapperClasses")).map(clz -> clz.getSimpleName()).collect(Collectors.toList());//指定要加载的 classmapperClassResource.addAll(collect);}}
}

测试

@MapperTest( mapperClasses= {UserMapper.class
})
public class UserPermTest {@Autowiredprivate UserMapper mapper;@Testpublic void query() {LambdaQueryWrapper<UserModel> query = Wrappers.lambdaQuery(UserModel.class);query.last(" limit 2");List<UserModel> list = mapper.selectList(query);}
}

测试成功，看日志

INFO [main] i.f.b.c.MybatisPlusTestAutoConfiguration : load xml: UserMapper.xml