Jdbc连Sybase数据库的几种方法

1.单用一个JSP文件测试SYBASE jconnect-5_2 JDBC数据库接口： <%@ page contentType=text/html;charset=GB2312 %><%@ page import=java.sql.* %> JSP测试SYBASE jconnect-5_2 JDBC数据库接口

<%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();out.print();out.print();out.print();out.print();}%>

+rs.getString(emp_lname)+

+rs.getString(dept_id)+

+rs.getString(street)+

+rs.getString(cITy)+

+rs.getString(state)+

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<%out.print(数据库操作成功，恭喜你);%><%rs.close(); stmt.close(); conn.close(); %>2.再用JSP和Java Bean的方法: JSP Code:<%@ page contentType=text/html;charset=GB2312 %><%@ page import=java.sql.* %> <%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)+|
);}rs.close(); %>

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Bean的代码: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.executeQuery(sql);return rs;}}

 

3.利用JDBC(SYBAE jconnect-5_2)查询Sybase ASA7.0中数据的图形化Java程序范例: //// 一个简单的利用JDBC(SYBAE jconnect-5_2)查询Sybase ASA7.0中数据的图形化Java程序范例// 执行的SQL语句是 select * from employee ,可以改成自己所需的.// 运行方式为: c:\> java JDBCTest //import java.awt.*; import java.sql.*; // 在使用JDBC之前，必须引入JAVA的SQL包class JDBCTest extends Frame {TextArea myTextArea;public JDBCTest () {//设定程序的显示界面super(一个简单的利用JDBC(jconnect-5_2)查询Sybase ASA7.0中数据的图形化Java程序范例);setLayout(new FlowLayout());myTextArea = new TextArea(30,80);add(myTextArea);resize(500,500);show();myTextArea.appendText(数据库查询中，请等待......\n);}void displayResults(ResultSet results) throws SQLException {//首先得到查询结果的信息ResultSetMetaData resultsMetaData = results.getMetaData();int cols = resultsMetaData.getColumnCount();//将等待信息清除myTextArea.setText();//显示结果while(results.next()) {for(int i=1;i<=cols;i++) {if(i>1)myTextArea.appendText(\t);try{myTextArea.appendText(results.getString(i));}// 捕获空值时产生的异常catch(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 {//设定查询字串String queryString = select * from employee;JDBCTest myJDBCTest = new JDBCTest();//加载驱动程序Class.forName(com.sybase.jdbc2.jdbc.SybDriver).newInstance();//建立连接,localhost为主机名,dba为用户名，sql为密码Connection myConn = DriverManager.getConnection(jdbc:sybase:Tds:localhost:2638,dba,sql);Statement myStmt = myConn.createStatement();//执行查询ResultSet myResults = myStmt.executeQuery(queryString);myJDBCTest.displayResults(myResults);//关闭所有打开的资源myResults.close();myStmt.close();myConn.close();}}