1. test SYBASE jconnect-5_2 JDBC Database interface with one JSP file :
<%@ page contenttype= "text/html;charset=gb2312"%><%@ page import= "java.sql.*"%>TestSYBASE jconnect-5_2 JDBCDatabase Interface</title><meta name= "generator" content= "EditPlus2.11" ><meta name= "Author" content= "Naxin" > TestSYBASE jconnect-5_2 JDBCDatabase Interface</center><br><br><table border=3 align=center ><%class.forname (" Com.sybase.jdbc2.jdbc.SybDriver "); String url = "jdbc:sybase:tds:localhost:2638"; Connection conn= drivermanager.getconnection (URL, "DBA", "SQL"); Statement stmt=conn.createstatement (); String sql= "Select Emp_lname,dept_id,street,city,state from Employee order by Emp_lname"; ResultSet rs=stmt.executequery (SQL); while (Rs.next ()) {Out.print ("<TR><TD>" +rs.getstring ("emp_lname") + "</TD>"); Out.print ("<td > "+rs.getstring (" dept_id ") +" </TD> ") out.print (" <TD> "+rs.getstring (" street ") +" </TD> "); o Ut.print ("<TD>" +rs.getstring ("City") + "</TD>") out.print ("<TD>" +rs.getstring ("state") + "</ Td></tr> ");} %> </table><br>database operation successful, congratulations!");%> <%rs.close (); Stmt.close (); Conn.close (); %> </BODY></HTML>
|
2. reuse the JSP and Java Bean methods :
JSP code:<%@ page contenttype= "text/html;charset=gb2312"%><%@ page import= "java.sql.*"%><HTML ><HEAD><TITLE> </title><meta name= "generator" content= "EditPlus2.11" ><meta name= " Author "content=" naxin ">the Code:p ackage test;import java.sql.*;p ublic class Sybconn {//String Sdbdriver = "Com.sybase.jdbc2.jdbc.SybDriver"; String sConnStr = "jdbc:sybase:tds:localhost:2638";//String user= "DBA";//String passwd= "SQL"; Connection conn = null; ResultSet rs = null;public ResultSet Query (String sql) throws Sqlexception,exception {Class.forName (" Com.sybase.jdbc2.jdbc.SybDriver "). newinstance (); conn = Drivermanager.getconnection (sConnStr," DBA "," SQL "); Statement stmt = Conn.createstatement (); rs = stmt.executequery (SQL); return RS;}}
|
3. use JDBC (sybae jconnect-5_2) to query examples of graphical Java programs for data in Sybase ASA7.0 :
//// a simple use ofJDBC (sybae jconnect-5_2)QuerySybase ASA7.0the graphical data inJavaProgram Examples// Execution ofSQLstatement is"SELECT * from Employee",You can change what you want..// run in the form of: c:\> java jdbctest//import java.awt.*; import java.sql.*;//in useJDBCbefore, you must introduceJAVAof theSQLPackageclass Jdbctest extends Frame {TextArea mytextarea;public jdbctest () {//set the display interface of the programSuper ("a simple use ofJDBC (jconnect-5_2)QuerySybase ASA7.0the graphical data inJavaProgram Examples"); SetLayout (new FlowLayout ()); Mytextarea = new TextArea (30,80); add (Mytextarea); resize (500,500); show (); Mytextarea.appendtext ("in the database query, please wait... \ n ");} void DisplayResults (ResultSet results) throws SQLException {//first get information about the results of the queryResultSetMetaData resultsmetadata = Results.getmetadata (); int cols = Resultsmetadata.getcolumncount ();//will wait for information to clearMytextarea.settext ("");Show ResultsWhile (Results.next ()) {for (int i=1;i<=cols;i++) {if (i>1) mytextarea.appendtext ("\ t"); try{ Mytextarea.appendtext (results.getstring (i));} // exceptions that occur when a null value is caughtcatch (NullPointerException e) {}}mytextarea.appendtext ("\ n");} public boolean handleevent (Event evt) {if (evt.id = = Event.window_destroy) {system.exit (0); return true;} Return super.handleevent (EVT);} public static void Main (String argv[]) throws Sqlexception,exception {//Set query stringString querystring = "SELECT * FROM Employee"; Jdbctest myjdbctest = new Jdbctest ();//Load Driverclass.forname ("Com.sybase.jdbc2.jdbc.SybDriver"). Newinstance ()//Establish a connection, localhostas host name, DBAas the user name,SQLas a passwordConnection myconn = drivermanager.getconnection ("jdbc:sybase:tds:localhost:2638", "DBA", "SQL"); Statement mystmt = Myconn.createstatement ();//Execute QueryResultSet myresults = Mystmt.executequery (querystring); Myjdbctest.displayresults (myresults);to close all open resources myresults.close (); Mystmt.close (); Myconn.close ();}}
|
-->
