Mybatis 自定义SqlSessionFactoryBean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();

        }

    }  

}  

然后在mybatis的配置文件中修改

1. <bean id="sqlSession" class="com.xxxx.xxxx.util.common.PackagesSqlSessionFactoryBean">
2. <property name="configLocation" value="classpath:config/sqlmap/sqlmap-config.xml" />
3. <property name="dataSource" ref="dataSource"/>
4. <!--<property name="mapperLocations"-->
5. <!--value="classpath*:com/xxxx/xxxx/merchant/**/domain/mapper/*.xml"/>-->
6. <property name="typeAliasesPackage" value="com.xxxx.xxxx.custom.*.domain"/>
7. <property name="plugins">
8. <array>
9. <ref bean="pageInterceptor"/>
10. </array>
11. </property>
12. </bean>
13. <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
14. <property name="basePackage" value="com.xxxx.xxxx.**.dao"/>
15. </bean>

<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>