Netbeans连接数据库

Netbeans连接数据库

NetBeans项目的“项目属性”中“库”一栏中。Tab页“编译和运行”中已经加上jdbc的驱动文件

 Connectionconn=null;//连接数据库的对象

 PreparedStatementpstmt=null;//执行sql对象

 try{

 try{

 Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");

 }catch(ClassNotFoundExceptionex){

 Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE,null,ex);

}

 conn=DriverManager.getConnection("jdbc:sqlserver://localhost:1433;DatabaseName=task","sa","sa");

 Stringsql="select*fromuserInfowhereusername='"+username+"'andpassword='"+password+"'";

System.out.println(username);

System.out.println(password);

pstmt=conn.prepareStatement(sql);

ResultSetrs=pstmt.executeQuery();

 if(rs.next()){

 System.out.println("登录成功!");

 //response.setHeader("refresh","3;URL=userCenter.jsp");//登陆成功跳转到用户中心

 }else{

 System.out.println("失败！");

}

 }catch(SQLExceptione){

 System.out.print("错误！\n");

System.out.println(e);

}

本文出自 “阿凡达” 博客，请务必保留此出处http://shamrock.blog.51cto.com/2079212/702542