JDBC连接Sybase1.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.*" %>
- <html>
- <head>
- <title> jsp测试sybase jconnect-5_2 jdbc数据库接口 </title>
- <meta name="generator" content="editplus2.11">
- <meta name="author" content="naxin">
- </head>
- <body>
- <center>jsp测试sybase jconnect-5_2 jdbc数据库接口</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>");
- out.print("<td>"+rs.getstring("city")+"</td>");
- out.print("<td>"+rs.getstring("state")+"</td></tr>");
- }
- %>
- </table>
- <br><hr>
- <%out.print("数据库操作成功,恭喜你");%>
- <%
- rs.close();
- stmt.close();
- conn.close();
- %>
- </body>
- </html>
JDBC连接Sybase2.再用jsp和java bean的方法:
- <%@ 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;
- }
- }
JDBC连接Sybase3.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 resultsresultsmetadata = 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JDBC连接Sybase资源
- myresults.close();
- mystmt.close();
- myconn.close();
- }
- }
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