DBUtils_MS.java
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package com.bsth.util.db;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import javax.sql.DataSource;
import org.apache.log4j.Logger;
import org.springframework.stereotype.Component;
import com.mchange.v2.c3p0.DataSources;
/**
* 808GPS SQL Server数据库连接工具类
* @author PanZhao
*
*/
@Component
public class DBUtils_MS {
private static String url = null;
private static String username = null;
private static String pwd = null;
private static DataSource ds_pooled;
static Logger logger = Logger.getLogger(DBUtils_MS.class);
static {
Properties env = new Properties();
try {
env.load(DBUtils_MS.class.getClassLoader().getResourceAsStream("ms-jdbc.properties"));
// 1. 加载驱动类
Class.forName(env.getProperty("ms.mysql.driver"));
url = env.getProperty("ms.mysql.url");
username = env.getProperty("ms.mysql.username");
pwd = env.getProperty("ms.mysql.password");
// 设置连接数据库的配置信息
DataSource ds_unpooled = DataSources.unpooledDataSource(url,
username, pwd);
Map<String, Object> pool_conf = new HashMap<String, Object>();
// 设置最大连接数
pool_conf.put("maxPoolSize", 10);
ds_pooled = DataSources.pooledDataSource(ds_unpooled, pool_conf);
} catch (FileNotFoundException e) {
logger.error(e.toString());
e.printStackTrace();
} catch (IOException e) {
logger.error(e.toString());
e.printStackTrace();
} catch (ClassNotFoundException e) {
logger.error(e.toString());
e.printStackTrace();
} catch (SQLException e) {
logger.error(e.toString());
e.printStackTrace();
}
}
/**
* 获取连接对象
*/
public static Connection getConnection() throws SQLException {
return ds_pooled.getConnection();
}
/**
* 释放连接池资源
*/
public static void clearup() {
if (ds_pooled != null) {
try {
DataSources.destroy(ds_pooled);
} catch (SQLException e) {
logger.error(e.toString());
e.printStackTrace();
}
}
}
/**
* 资源关闭
*
* @param rs
* @param stmt
* @param conn
*/
public static void close(ResultSet rs, Statement stmt, Connection conn) {
if (rs != null) {
try {
rs.close();
} catch (SQLException e) {
logger.error(e.toString());
e.printStackTrace();
}
}
if (stmt != null) {
try {
stmt.close();
} catch (SQLException e) {
logger.error(e.toString());
e.printStackTrace();
}
}
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
logger.error(e.toString());
e.printStackTrace();
}
}
}
}