java连接数据库核心代码

一、oracle

String driver = "oracle.jdbc.driver.OracleDriver";

String url = "jdbc:Oracle:thin:@10.61.6.185:1521:orcl";

Statement stmt = null;

Connection conn = null;

try {

           Class.forName(driver);

   conn = DriverManager.getConnection(url, "kygl0714", "kygl0714");

   stmt = conn.createStatement();

           String sql="select jsxm from b_js where jsbh='"+key+"'";

   ResultSet rs=stmt.executeQuery(sql);

……

二、mysql

Connection conn=null;

try{

Class.forName("com.mysql.jdbc.Driver");

System.out.println("数据库驱动载入成功！");

String url="jdbc:mysql://localhost:3306/DeCloud_HBase";

String user="root";

String password="root";

conn =DriverManager.getConnection(url,user,password);

String sql=null;

Statement statement=conn.createStatement();

……