Jdbc连Sybase数据库的几种方法-巨人网络通讯

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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.*" %>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();}}

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