package myUtil;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
/**
* 链接oracle数据库
* @author weichk
*/
public class OracleDbManager {
private static final String URL = "jdbc:oracle:thin:@//localhost:1521/databaseName" ;
private static final String USER = "username" ;
private static final String PASSWORD = "password" ;
static {
try {
Class.forName( "oracle.jdbc.OracleDriver" );
} catch (ClassNotFoundException e) {
System.out.println( "加载Oracle数据库驱动失败!" );
}
}
/**
* 获取Connection
*
* @return
* @throws SQLException
* @throws ClassNotFoundException
*/
public static Connection getConnection() throws SQLException {
Connection conn = null ;
try {
conn = DriverManager.getConnection(URL, USER, PASSWORD);
} catch (SQLException e) {
System.out.println( "获取数据库连接失败!" );
throw e;
}
return conn;
}
/**
* 关闭ResultSet
* @param rs
*/
public static void closeResultSet(ResultSet rs) {
if (rs != null ) {
try {
rs.close();
} catch (SQLException e) {
System.out.println(e.getMessage());
}
}
}
/**
* 关闭Statement
* @param stmt
*/
public static void closeStatement(Statement stmt) {
if (stmt != null ) {
try {
stmt.close();
}
catch (Exception e) {
System.out.println(e.getMessage());
}
}
}
/**
* 关闭ResultSet、Statement
* @param rs
* @param stmt
*/
public static void closeStatement(ResultSet rs, Statement stmt) {
closeResultSet(rs);
closeStatement(stmt);
}
/**
* 关闭PreparedStatement
* @param pstmt
* @throws SQLException
*/
public static void fastcloseStmt(PreparedStatement pstmt) throws SQLException
{
pstmt.close();
}
/**
* 关闭ResultSet、PreparedStatement
* @param rs
* @param pstmt
* @throws SQLException
*/
public static void fastcloseStmt(ResultSet rs, PreparedStatement pstmt) throws SQLException
{
rs.close();
pstmt.close();
}
/**
* 关闭ResultSet、Statement、Connection
* @param rs
* @param stmt
* @param con
*/
public static void closeConnection(ResultSet rs, Statement stmt, Connection con) {
closeResultSet(rs);
closeStatement(stmt);
closeConnection(con);
}
/**
* 关闭Statement、Connection
* @param stmt
* @param con
*/
public static void closeConnection(Statement stmt, Connection con) {
closeStatement(stmt);
closeConnection(con);
}
/**
* 关闭Connection
* @param con
*/
public static void closeConnection(Connection con) {
if (con != null ) {
try {
con.close();
}
catch (Exception e) {
System.out.println(e.getMessage());
}
}
}
}
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