Mybatis typeAliasesPackage正则扫描
mybatis默认配置typeAliasesPackage是不支持正则扫描package的，因此需要手动继承org.mybatis.spring.SqlSessionFactoryBean，自己实现正则扫描，方法和传统的spring+mybatis没什么区别，不同的是一个需要继承类一个是使用的扫描实现。
对于两个或多个扫描路径，例：
cn.com.onethird.integration.entity
cn.com.onethird.business.entity
application.properties配置Mybatis 如下
mybatis.typeAliasesPackage=cn.com.onethird.*.*.entitymybatis.mapperLocations=classpath:mapper/*.xml
package cn.com.onethird.nursinghome; import java.io.IOException;import java.util.ArrayList;import java.util.HashSet;import java.util.List;import java.util.Properties; import javax.sql.DataSource; import org.apache.ibatis.session.SqlSessionFactory;import org.mybatis.spring.SqlSessionFactoryBean;import org.mybatis.spring.annotation.MapperScan;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.SpringApplication;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.PropertySource;import org.springframework.core.env.Environment;import org.springframework.core.io.Resource;import org.springframework.core.io.support.PathMatchingResourcePatternResolver;import org.springframework.core.io.support.ResourcePatternResolver;import org.springframework.core.type.classreading.CachingMetadataReaderFactory;import org.springframework.core.type.classreading.MetadataReader;import org.springframework.core.type.classreading.MetadataReaderFactory;import org.springframework.util.ClassUtils;import com.Application; /** * * @Title: MyBatisConfig.java * * @Package * @Description: mybtis实现正则扫描java bean包 * * @author * @date * @version V1.0 */ @Configuration@PropertySource("classpath:application.properties")public class MyBatisConfig { @Autowired private Environment env; static final String DEFAULT_RESOURCE_PATTERN = "**/*.class"; public static String setTypeAliasesPackage(String typeAliasesPackage) { ResourcePatternResolver resolver = (ResourcePatternResolver) new PathMatchingResourcePatternResolver(); MetadataReaderFactory metadataReaderFactory = new CachingMetadataReaderFactory( resolver); typeAliasesPackage = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + ClassUtils.convertClassNameToResourcePath(typeAliasesPackage) + "/" + DEFAULT_RESOURCE_PATTERN; try { List<String> result = new ArrayList<String>(); Resource[] resources = resolver.getResources(typeAliasesPackage); if (resources != null && resources.length > 0) { MetadataReader metadataReader = null; for (Resource resource : resources) { if (resource.isReadable()) { metadataReader = metadataReaderFactory .getMetadataReader(resource); try { result.add(Class .forName(metadataReader.getClassMetadata().getClassName()) .getPackage().getName()); } catch (ClassNotFoundException e) { e.printStackTrace(); } } } } if (result.size() > 0) { HashSet<String> h = new HashSet<String>(result); result.clear(); result.addAll(h); typeAliasesPackage = String.join("," ,(String[]) result.toArray(new String[0])); } else { throw new RuntimeException( "mybatis typeAliasesPackage 路径扫描错误, 参数typeAliasesPackage:" + typeAliasesPackage + "未找到任何包"); } } catch (IOException e) { e.printStackTrace(); } return typeAliasesPackage; } @Bean public SqlSessionFactory sqlSessionFactory(DataSource dataSource) throws Exception { System.out.println(">>>>>>>>>>>配置[typeAliasesPackage,mapperLocations]START>>>>>>>>>>>>>>"); Properties props = new Properties(); String typeAliasesPackage = env .getProperty("mybatis.typeAliasesPackage"); String mapperLocations = env.getProperty("mybatis.mapperLocations"); typeAliasesPackage=setTypeAliasesPackage(typeAliasesPackage); final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean(); sessionFactory.setDataSource(dataSource); sessionFactory.setTypeAliasesPackage(typeAliasesPackage); sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(mapperLocations)); System.out.println(">>>>>>>>>>>配置[typeAliasesPackage,mapperLocations]END>>>>>>>>>>>>>>"); return sessionFactory.getObject(); } public static void main(String[] args) throws Exception { setTypeAliasesPackage("cn.com.onethird.*.*.entity"); }}
Mybatis 自定义扫描通配符typeAliasesPackage
typeAliasesPackage 默认只能扫描某一个路径下，或以逗号等分割的 几个路径下的内容，不支持通配符和正则，采用重写的方式解决
package com.xxxx.xxx.util.common; import com.xxxx.xxx.util.LogUtil; import org.apache.commons.lang3.StringUtils; import org.mybatis.spring.SqlSessionFactoryBean; import org.slf4j.Logger; import org.springframework.core.io.Resource; import org.springframework.core.io.support.PathMatchingResourcePatternResolver; import org.springframework.core.io.support.ResourcePatternResolver; import org.springframework.core.type.classreading.CachingMetadataReaderFactory; import org.springframework.core.type.classreading.MetadataReader; import org.springframework.core.type.classreading.MetadataReaderFactory; import org.springframework.util.ClassUtils; import java.io.IOException; import java.util.ArrayList; import java.util.List; /** * Created by Administrator on 2015/10/6. */ public class PackagesSqlSessionFactoryBean extends SqlSessionFactoryBean { static final String DEFAULT_RESOURCE_PATTERN = "**/*.class"; private static Logger logger = LogUtil.get(); @Override public void setTypeAliasesPackage(String typeAliasesPackage) { ResourcePatternResolver resolver = (ResourcePatternResolver) new PathMatchingResourcePatternResolver(); MetadataReaderFactory metadataReaderFactory = new CachingMetadataReaderFactory(resolver); typeAliasesPackage = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + ClassUtils.convertClassNameToResourcePath(typeAliasesPackage) + "/" + DEFAULT_RESOURCE_PATTERN; //将加载多个绝对匹配的所有Resource //将首先通过ClassLoader.getResource("META-INF")加载非模式路径部分 //然后进行遍历模式匹配 try { List<String> result = new ArrayList<String>(); Resource[] resources = resolver.getResources(typeAliasesPackage); if(resources != null && resources.length > 0){ MetadataReader metadataReader = null; for(Resource resource : resources){ if(resource.isReadable()){ metadataReader = metadataReaderFactory.getMetadataReader(resource); try { result.add(Class.forName(metadataReader.getClassMetadata().getClassName()).getPackage().getName()); } catch (ClassNotFoundException e) { e.printStackTrace(); } } } } if(result.size() > 0) { super.setTypeAliasesPackage(StringUtils.join(result.toArray(), ",")); }else{ logger.warn("参数typeAliasesPackage:"+typeAliasesPackage+"，未找到任何包"); } //logger.info("d"); } catch (IOException e) { e.printStackTrace(); } } }
<bean id="sqlSession" class="com.xxxx.xxxx.util.common.PackagesSqlSessionFactoryBean"> <property name="configLocation" value="classpath:config/sqlmap/sqlmap-config.xml" /> <property name="dataSource" ref="dataSource"/> <!--<property name="mapperLocations"--> <!--value="classpath*:com/xxxx/xxxx/merchant/**/domain/mapper/*.xml"/>--> <property name="typeAliasesPackage" value="com.xxxx.xxxx.custom.*.domain"/> <property name="plugins"> <array> <ref bean="pageInterceptor"/> </array> </property> </bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.xxxx.xxxx.**.dao"/> </bean>
以上为个人经验，希望能给大家一个参考，也希望大家多多支持。
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