SpringBoot使用java_jar启动Mybatis无法识别实体类别名的解决

前言

博主github

博主个人博客http://blog.healerjean.com

恶心到吐血，找一天错误了，恶心啊。一直在找代码问题，快下班了，看到了一位大神的博客，解决了问题，真的快抑郁了

大神博客 https://blog.csdn.net/rainbow702/article/details/63255736

1、报错信息

        ...] org.hibernate.jpa.internal.util.LogHelper.logPersistenceUnitInformation[31]
2020-01-14 17:46:49 INFO  -[                                ]- HHH000412: Hibernate Core {5.3.10.Final} org.hibernate.Version.logVersion[46]
2020-01-14 17:46:49 INFO  -[                                ]- HHH000206: hibernate.properties not found org.hibernate.cfg.Environment.<clinit>[213]
2020-01-14 17:46:49 INFO  -[                                ]- HCANN000001: Hibernate Commons Annotations {5.0.4.Final} org.hibernate.annotations.common.Version.<clinit>[49]
2020-01-14 17:46:51 INFO  -[                                ]- {dataSource-1} inited com.alibaba.druid.pool.DruidDataSource.init[928]
2020-01-14 17:46:51 INFO  -[                                ]- HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect org.hibernate.dialect.Dialect.<init>[157]
2020-01-14 17:46:54 INFO  -[                                ]- Initialized JPA EntityManagerFactory for persistence unit 'default' org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.buildNativeEntityManagerFactory[415]
2020-01-14 17:46:54 WARN  -[                                ]- Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'requireDomainAspect': Unsatisfied dependency expressed through field 'sysDomainManager'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'sysDomainManager': Unsatisfied dependency expressed through field 'sysDomainDao'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sysDomainDao': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [com/healerjean/proj/config/DatasourceConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'clusterSqlSessionFactory' threw exception; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'URL [jar:file:/D:/workspace/origin/iku/iku-parent/iku-client-webh5/iku-client-webh5.jar!/BOOT-INF/lib/iku-data-1.0.0-SNAPSHOT.jar!/mapper/system/SysAlimamaInfoMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is 'URL [jar:file:/D:/workspace/origin/iku/iku-parent/iku-client-webh5/iku-client-webh5.jar!/BOOT-INF/lib/iku-data-1.0.0-SNAPSHOT.jar!/mapper/system/SysAlimamaInfoMapper.xml]'. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'SysAlimamaInfo'.  Cause: java.lang.ClassNotFoundException: Cannot find class: SysAlimamaInfo org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext.refresh[557]
2020-01-14 17:46:54 INFO  -[                                ]- Closing JPA EntityManagerFactory for persistence unit 'default' org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.destroy[597]
2020-01-14 17:46:54 INFO  -[                                ]- {dataSource-1} closed com.alibaba.druid.pool.DruidDataSource.close[1823]
2020-01-14 17:46:54 INFO  -[                                ]- Stopping service [Tomcat] org.apache.catalina.core.StandardService.log[173]

2、问题来源

1、使用Spring Boot，并使用Spring Boot的Maven插件打包

2、使用MyBatis

3、将实体Maven多模块

4、使用 SqlSessionFactoryBean.setTypeAliasesPackage 指定包扫描Domain

然后会发现：在开发时直接使用IDEA执行main方法运行时一切正常，但是打成Jar包后使用java -jar启动时配置的Domain别名均会失效。

3、解决方案

sqlSessionFactory.setVfs(SpringBootVFS.class);

@Bean(name = "sqlSessionFactory")
public SqlSessionFactory clusterSqlSessionFactory(@Qualifier("dataSource") DataSource dataSource)
    throws Exception {
    final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
    sessionFactory.setDataSource(dataSource);
    sessionFactory.setMapperLocations(
        new PathMatchingResourcePatternResolver().getResources(mapperLocation));
    sessionFactory.setTypeAliasesPackage(typeAliasesPackage);
    //MyBatis无法扫描Spring Boot别名的Bug 添加下面这行代码
    sessionFactory.setVfs(SpringBootVFS.class);
    return sessionFactory.getObject();
}