package?dao;
import?java.io.IOException;
import?java.io.InputStream;
import?java.sql.Connection;
import?java.sql.DriverManager;
import?java.sql.PreparedStatement;
import?java.sql.ResultSet;
import?java.sql.SQLException;
import?java.sql.Statement;
import?java.util.Properties;
/**
?*?數據庫連接與關閉工具類。
?*/
public?class?baseDao?{
	
	private?static?String?driver;?//?數據庫驅動字符串
	private?static?String?url;?//?連接URL字符串
	private?static?String?user;?//?數據庫用戶名
	private?static?String?password;?//?用戶密碼
	protected?Connection?conn?=?null;//?數據連接對象
	protected?PreparedStatement?pstmt?=?null;?//執行命令的對象
	protected?ResultSet?rs?=?null;?//查詢結果集對象
	
	static{//靜態代碼塊在類加載的時候執行
		init（）;
	}
	
	/**
	?*?初始化連接參數從配置文件里獲得
	?*/
		public?static?void?init（）{
			Properties?params=new?Properties（）;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????1093??2017-12-11?13:41??FinancingProductSys\.classpath
?????文件????????1344??2017-12-11?14:31??FinancingProductSys\.project
?????文件?????????522??2017-12-11?13:41??FinancingProductSys\.settings\.jsdtscope
?????文件??????????66??2017-12-11?14:18??FinancingProductSys\.settings\org.eclipse.core.resources.prefs
?????文件?????????364??2017-12-11?13:40??FinancingProductSys\.settings\org.eclipse.jdt.core.prefs
?????文件?????????516??2017-12-11?13:41??FinancingProductSys\.settings\org.eclipse.wst.common.component
?????文件?????????414??2017-12-11?13:41??FinancingProductSys\.settings\org.eclipse.wst.common.project.facet.core.xml
?????文件??????????49??2017-12-11?13:41??FinancingProductSys\.settings\org.eclipse.wst.jsdt.ui.superType.container
?????文件???????????6??2017-12-11?13:41??FinancingProductSys\.settings\org.eclipse.wst.jsdt.ui.superType.name
?????文件??????????39??2017-12-11?13:41??FinancingProductSys\WebRoot\meta-INF\MANIFEST.MF
?????文件????????3113??2017-12-11?13:44??FinancingProductSys\WebRoot\WEB-INF\classes\dao\baseDao.class
?????文件?????????433??2017-12-11?13:50??FinancingProductSys\WebRoot\WEB-INF\classes\dao\FinancingProductDao.class
?????文件????????3863??2017-12-11?15:07??FinancingProductSys\WebRoot\WEB-INF\classes\dao\FinancingProductDaoImpl.class
?????文件??????????98??2017-12-11?13:44??FinancingProductSys\WebRoot\WEB-INF\classes\database.properties
?????文件????????2059??2017-12-11?13:47??FinancingProductSys\WebRoot\WEB-INF\classes\entity\FinancingProduct.class
?????文件?????????445??2017-12-11?14:09??FinancingProductSys\WebRoot\WEB-INF\classes\service\FinancingProductService.class
?????文件????????1651??2017-12-11?14:12??FinancingProductSys\WebRoot\WEB-INF\classes\service\FinancingProductServiceImpl.class
?????文件????????2229??2017-12-11?14:55??FinancingProductSys\WebRoot\WEB-INF\classes\servlet\AddServlet.class
?????文件????????1652??2017-12-11?14:50??FinancingProductSys\WebRoot\WEB-INF\classes\servlet\InfoServlet.class
?????文件????????2395??2017-12-11?15:50??FinancingProductSys\WebRoot\WEB-INF\classes\servlet\SearchServlet.class
?????文件??????392972??2017-12-11?13:44??FinancingProductSys\WebRoot\WEB-INF\lib\fastjson-1.2.13.jar
?????文件??????566623??2017-12-11?13:43??FinancingProductSys\WebRoot\WEB-INF\lib\mysql-connector-java-5.1.0-bin.jar
?????文件????????1461??2017-12-11?14:58??FinancingProductSys\WebRoot\WEB-INF\web.xml
?????文件????????2108??2017-12-11?14:55??FinancingProductSys\WebRoot\addInfo.jsp
?????文件????????2897??2017-12-11?15:39??FinancingProductSys\WebRoot\index.jsp
?????文件??????304438??2017-12-11?13:42??FinancingProductSys\WebRoot\js\jquery-1.12.4.js
?????文件????????3052??2017-12-11?13:43??FinancingProductSys\src\dao\baseDao.java
?????文件?????????315??2017-12-11?13:50??FinancingProductSys\src\dao\FinancingProductDao.java
?????文件????????2199??2017-12-11?15:07??FinancingProductSys\src\dao\FinancingProductDaoImpl.java
?????文件??????????98??2017-12-11?13:44??FinancingProductSys\src\database.properties
?????文件????????1526??2017-12-11?13:47??FinancingProductSys\src\entity\FinancingProduct.java
............此處省略6個文件信息