DBUtils_jiaDingBus.java
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package com.bsth.util.db;
import com.mchange.v2.c3p0.DataSources;
import org.apache.log4j.Logger;
import javax.sql.DataSource;
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;
/**
* 嘉定基础库库连接池
* @author
*
*/
//@Component
public class DBUtils_jiaDingBus {
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_jiaDingBus.class);
static {
Properties env = new Properties();
try {
env.load(DBUtils_jiaDingBus.class.getClassLoader().getResourceAsStream("jiaDingBus-jdbc.properties"));
// 1. 加载驱动类
Class.forName(env.getProperty("jiaDingBus.mysql.driver"));
url = env.getProperty("jiaDingBus.mysql.url");
username = env.getProperty("jiaDingBus.mysql.username");
pwd = env.getProperty("jiaDingBus.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);
pool_conf.put("testConnectionOnCheckout", false);
//异步检测连接的有效性
pool_conf.put("testConnectionOnCheckin", true);
//30秒检测一次
pool_conf.put("idleConnectionTestPeriod", 30);
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();
}
}
}
public static DataSource getDataSource(){
return ds_pooled;
}
}