1. Use a single JSP file to test the SYBASE jconnect-5_2 JDBC database interface:
<% @ Page contentType = "text/html; charset = GB2312" %> <% @ page import = "java. SQL. * "%> <HTML> <HEAD> <TITLE> JSP test SYBASE jconnect-5_2 JDBC database interface </TITLE> <meta name =" Generator "CONTENT =" EditPlus2.11 "> <META NAME = "Author" CONTENT = "naxin"> </HEAD> <BODY> <center> JSP test SYBASE jconnect-5_2 JDBC database interface </center> <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 rs1_stmt.exe cuteQuery (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>"); out. print ("<TD>" + rs. getString ("city") + "</TD>"); out. print ("<TD>" + rs. getString ("state") + "</TD> </TR>") ;}%> </table> <BR> <HR> <% out. print ("succeeded in database operation, congratulations"); %> <% rs. close (); stmt. close (); conn. close (); %> </BODY> </HTML>
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2. Use 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 "> </HEAD> <BODY> <jsp: useBean id = "sybase" scope = "page" class = "test. sybconn "/> <% ResultSet rs = sybase. query ("select * from tjck_dh"); while (rs. next () {out. print ("|" + rs. getString ("name") + "|"); out. print (rs. getString ("card_no") + "|"); out. print (rs. getString ("amount") + "|"); out. print (rs. getString ("home_call") + "|"); out. print (rs. getString ("office_call") + "| <br>");} rs. close () ;%> <HR> Bean code: package test; import java. SQL. *; public 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.exe cuteQuery (SQL); return rs ;}}
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3. Use JDBC (SYBAE jconnect-5_2) to query the data in Sybase ASA7.0 graphical Java program example:
//// A simple example of a graphical Java program that uses JDBC (SYBAE jconnect-5_2) to query data in Sybase ASA7.0 // The executed SQL statement is "select * from employee ", you can change it to what you need. // run in c: \> java JDBCTest // import java. awt. *; import java. SQL. *; // before using JDBC, you must introduce the java SQL package class JDBCTest extends Frame {TextArea myTextArea; public JDBCTest () {// set the display interface of the program super ("a simple example of a graphical Java program that uses JDBC (jconnect-5_2) to query data in Sybase ASA7.0"); setLayout (new FlowLayout ()); myTextArea = new TextArea (500,500); add (myTextArea); resize (); show (); myTextArea. appendText ("database query in progress, please wait ...... \ n ");} void displayResults (ResultSet results) throws SQLException {// obtain the query result first. ResultSetMetaData resultsMetaData = results. getMetaData (); int cols = resultsMetaData. getColumnCount (); // clears the waiting information for myTextArea. setText (""); // display the result while (results. next () {for (int I = 1; I <= cols; I ++) {if (I> 1) myTextArea. appendText ("\ t"); try {myTextArea. appendText (results. getString (I);} // catch exception (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 the query String queryString = "select * from employee "; JDBCTest myJDBCTest = new JDBCTest (); // load the driver Class. forName ("com. sybase. jdbc2.jdbc. sybDriver "). newInstance (); // establish a Connection. localhost is the host name, dba is the username, and SQL is the password Connection myConn = DriverManager. getConnection ("jdbc: sybase: Tds: localhost: 2638", "dba", "SQL"); Statement myStmt = myConn. createStatement (); // execute ResultSet myResults = myStmt.exe cuteQuery (queryString); myJDBCTest. displayResults (myResults); // close all open resources myResults. close (); myStmt. close (); myConn. close ();}}
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