纯mybatis对态切换库的问题

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纯mybatis对态切换库的问题25

我写了二个方法，帮忙看一下问题，写的有点发闷！谢了！多指出问题来！

SessionFactory

public class SessionFactory{
private static ThreadLocal<String> threadLocaldb = new ThreadLocal<String>();
private static String dbid= "development";
public static void setDbname(String dbname) {
threadLocaldb.set(dbname);
}
public static SqlSession getSession() {
if(threadLocaldb.get()==null){
threadLocaldb.set(dbid);
}
return DynamicDataSource.getSession(threadLocaldb.get());
}
public static void closeSession() {
DynamicDataSource.closeSession();
}
public static void closeDbname(){
threadLocaldb.set(null);
}
}
DynamicDataSource

public class DynamicDataSource {
private static Log log = LogFactory.getLog(DynamicDataSource.class);
private static String RESOURCE = "myBatis-config.xml";
private static ThreadLocal<SqlSession> threadLocal = new ThreadLocal<SqlSession>();
private static Map<String,SqlSessionFactory> getSessionFactory=setsession();
public static Map<String,SqlSessionFactory> setsession(){
Map<String,SqlSessionFactory> sessionFactory=new HashMap<String, SqlSessionFactory>();
sessionFactory.put("development", getSessionFactory("development"));
sessionFactory.put("localhost", getSessionFactory("localhost"));
return sessionFactory;
}
public static Reader getResourceAsReader(){
Reader reader = null;
try {
reader = Resources.getResourceAsReader(RESOURCE);
} catch (IOException e) {
log.error(e.getMessage());
}
return reader;
}
public static SqlSessionFactory getSessionFactory(String environment) {

SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(getResourceAsReader(),environment);
return sessionFactory;
}

public static SqlSession getSession(String environmentid) {
SqlSession session = threadLocal.get();
if (session == null) {
session = getSessionFactory.get(environmentid).openSession();
threadLocal.set(session);
return session;
}
return session;
}
public static void closeSession() {
SqlSession session = threadLocal.get();
if (session != null) {
threadLocal.set(null);
session.close();
}
}
}
调用的时候

SessionFactory.setDbname("development");
SessionFactory.closeDbname();

MyBatis