INTERACTION BETWEEN SQLSERVER AND SQL CLIENT - JDBC (Java Database Connectivity) Source Code in Java

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Home » Java Home » JDBC (Java Database Connectivity) Home » INTERACTION BETWEEN SQLSERVER AND SQL CLIENT

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Title	INTERACTION BETWEEN SQLSERVER AND SQL CLIENT
Author	B. Rajavel
Author Email	mhgsss [at] yahoo.com
Description	communication between server and client .
Category	Java » JDBC (Java Database Connectivity)
Hits	408913
Code	Select and Copy the Code
//SQLSERVER import java.sql.; import java.net.; import java.io.; public class SqlServer { public static void main(String []args) { BufferedReader br; ServerSocket ss; Socket s; int portno; String qry; Connection con; try { br=new BufferedReader(new InputStreamReader(System.in)); System.out.println("enter portno:"); portno=Integer.parseInt(br.readLine()); ss=new ServerSocket(portno); System.out.println("Server waiting..."); Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); while(true) { s=ss.accept(); new SqlServerReadData(s); } } catch(Exception e){} } } class SqlServerReadData implements Runnable { Connection con; Statement stmt; ResultSet r; ResultSetMetaData rm; Socket s; BufferedReader is; PrintWriter os; String qry,result,uname,pass,dsn; Thread t; int colcount; SqlServerReadData(Socket s) { try { this.s=s; is=new BufferedReader(new InputStreamReader(s.getInputStream())); os=new PrintWriter(s.getOutputStream()); //System.out.println("Username"); //uname=is.readLine(); //System.out.println("Passward"); //pass=is.readLine(); //System.out.println("dsn"); dsn=is.readLine(); String str="jdbc:odbc:"+dsn; Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); con=DriverManager.getConnection(str,"",""); stmt=con.createStatement(); t=new Thread(this); t.start(); } catch(Exception e){} } public void run() { try { while(true) { try { qry=is.readLine(); if(qry.compareToIgnoreCase("quit")==0) break; if(!(qry.startsWith("select"))) { try { r=stmt.executeQuery(qry); os.flush(); }catch(Exception e){} } else try { r=stmt.executeQuery(qry); rm=r.getMetaData(); colcount=rm.getColumnCount(); for(int i=1;i<=colcount;i++) { result=rm.getColumnLabel(i); os.print(result); os.flush(); } os.println(""); for(int i=1;i<=34;i++) os.print("-"); os.println(""); while(r.next()) { result =""; for(int i=1;i<=colcount;i++) { result=result+" "+r.getString(i); } os.println(result); os.flush(); } r.close(); } catch(SQLException e){} catch(Exception e){} os.println("end"); os.flush(); } catch(Exception e){} } stmt.close(); } catch(Exception e){} } } //SQLCLIENT import java.sql.; import java.net.; import java.io.; public class SqlClient { public static void main(String []args) { try { BufferedReader br=new BufferedReader(new InputStreamReader(System.in));; BufferedReader is; PrintWriter os; Socket s; int portno; String qry,hostname,result,uname,pass,dsn; System.out.print("enter the hostname:"); hostname=br.readLine(); System.out.println("enter portno:"); portno=Integer.parseInt(br.readLine()); s=new Socket(hostname,portno); is =new BufferedReader(new InputStreamReader(s.getInputStream())); os=new PrintWriter(s.getOutputStream()); System.out.println("Username"); uname=is.readLine(); System.out.println("Passward"); pass=is.readLine(); System.out.println("dsn"); dsn=br.readLine(); os.println(uname); os.flush(); os.println(pass); os.flush(); os.println(dsn); os.flush(); while(true) { System.out.print("SQL:\>"); qry=br.readLine(); if(qry.equals("quit")) break; os.println(qry); os.flush(); result=is.readLine(); while(!(result.equals("end"))) { System.out.println(result); result=is.readLine(); } } os.println("quit"); os.flush(); os.close(); is.close(); s.close(); } catch(Exception e){} }

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