mybatis配置类

package com.jinqi.framework.config;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import javax.sql.DataSource;
import org.apache.ibatis.io.VFS;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
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.env.Environment;
import org.springframework.core.io.DefaultResourceLoader;
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;

/**

• Mybatis支持*匹配扫描包

• @author jinqi
  */
  @Configuration
  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);
  List allResult = new ArrayList();
  try
  {
  for (String aliasesPackage : typeAliasesPackage.split(","))
  {
  List result = new ArrayList();
  aliasesPackage = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX
  + ClassUtils.convertClassNameToResourcePath(aliasesPackage.trim()) + “/” + DEFAULT_RESOURCE_PATTERN;
  Resource[] resources = resolver.getResources(aliasesPackage);
  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 hashResult = new HashSet(result);
  allResult.addAll(hashResult);
  }
  }
  if (allResult.size() > 0)
  {
  typeAliasesPackage = String.join(",", (String[]) allResult.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
  {
  String typeAliasesPackage = env.getProperty(“mybatis.typeAliasesPackage”);
  String mapperLocations = env.getProperty(“mybatis.mapperLocations”);
  String configLocation = env.getProperty(“mybatis.configLocation”);
  typeAliasesPackage = setTypeAliasesPackage(typeAliasesPackage);
  VFS.addImplClass(SpringBootVFS.class);

   final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
   sessionFactory.setDataSource(dataSource);
   sessionFactory.setTypeAliasesPackage(typeAliasesPackage);
   sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(mapperLocations));
   sessionFactory.setConfigLocation(new DefaultResourceLoader().getResource(configLocation));
   return sessionFactory.getObject();
  

  }
  }