Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.glaf.core.test; import java.io.Reader; import java.sql.Connection; import org.apache.ibatis.io.Resources; import org.apache.ibatis.session.SqlSession; import org.apache.ibatis.session.SqlSessionFactory; import org.apache.ibatis.session.SqlSessionFactoryBuilder; import com.alibaba.druid.util.JdbcUtils; import com.glaf.core.base.TreeModel; import com.glaf.core.identity.User; import com.glaf.core.jdbc.DBConnectionFactory; public class MyBatisMultiConnectionTest { private static SqlSessionFactory sqlSessionFactory; private static Reader reader; static { try { reader = Resources.getResourceAsReader("configuration.xml"); // java.util.Properties properties = // com.glaf.core.util.PropertiesUtils.loadClassPathResource("/jdbc.properties"); // sqlSessionFactory = new // SqlSessionFactoryBuilder().build(reader,properties); sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader); } catch (Exception ex) { ex.printStackTrace(); } } public static SqlSessionFactory getSession() { return sqlSessionFactory; } public static void main(String[] args) { long start = System.currentTimeMillis(); SqlSession session = null; Connection conn = null; try { conn = DBConnectionFactory.getConnection(); session = sqlSessionFactory.openSession(conn); User user = session.selectOne("getUserById", "root"); System.out.println(user.toJsonObject().toJSONString()); } catch (Exception ex) { ex.printStackTrace(); } finally { if (session != null) { session.close(); } JdbcUtils.close(conn); } long time = System.currentTimeMillis() - start; System.out.println("" + (time)); for (int i = 0; i < 100; i++) { start = System.currentTimeMillis(); session = null; conn = null; try { conn = DBConnectionFactory.getConnection("yz"); session = sqlSessionFactory.openSession(conn); TreeModel tree = session.selectOne("getTreeModelByCode", "SYS000"); System.out.println(tree.toJsonObject().toJSONString()); } catch (Exception ex) { ex.printStackTrace(); } finally { if (session != null) { session.close(); } JdbcUtils.close(conn); } time = System.currentTimeMillis() - start; System.out.println("" + (time)); } } }