jdbc连sybase数据库的几种方法_jsp技巧-IDC资讯中心

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.*” %>

<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>

2.再用JSP和Java Bean的方法:

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();

}

}

jdbc连sybase数据库的几种方法_jsp技巧

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