java连接数据库问题,急! Class.forName(strDriver);应该处理其异常,可以try可以throw.try{ Class.forName(strDriver);}catch(Exception e){//处理异常代码} 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 看一个ACCESS的 !非常完整的!import java.sql.*;public class JDBCAccess{ public static void main(String[] args) { String driver = "sun.jdbc.odbc.JdbcOdbcDriver"; String fileName="TestDB.mdb"; String url = "jdbc:odbc:DRIVER=Microsoft Access Driver (*.mdb);DBQ="+fileName; System.out.println(url); try { Class.forName(driver); Connection conn = DriverManager.getConnection(url, "", ""); Statement stmt=conn.createStatement(); String sql="select * from table1"; ResultSet rs=stmt.executeQuery(sql); while(rs.next()) { System.out.println(rs.getString("test1")); } } catch(ClassNotFoundException cnfe) { System.out.println(cnfe); //throw new Exception("不能找到Access数据库的驱动程序 "); } catch (SQLException sqle) { System.out.println(sqle); //throw new SQLException("不能连接到Access数据库 "); } }} 楼主,你好象没写连接阿,虽然你没有做SQL操作:Connection conn = DriverManager.getConnection(strUrl,strUser,strPassword); 省掉了很多代码吧,给你一个比较完整的参考一下:import java.sql.*;class testMSJdbc{ public static void main(String args[]){ try{ Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver"); Connection con = DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=Northwind;User=sa;Password=8888"); Statement st = con.createStatement(); String sql_str = "select CustomerID, CompanyName, ContactName from Customers order by CustomerID"; ResultSet rs = st.executeQuery(sql_str); while(rs.next()) { System.out.print(rs.getString("CustomerID") + " "); System.out.print(rs.getString("CompanyName") + " "); System.out.println(rs.getString("ContactName")); } rs.close(); st.close(); } catch(Exception err){ err.printStackTrace(System.out); } }} Help Me....! Java高手请进 传值与传地址 非诚勿扰…… wap页面防止刷新 洗牌的程序,服务器的,大家帮忙改一下 SWING 快看阿! 关于图形的问题!急!!!!!! 用JBuilder还用不用设置Java的开发环境? 请教一个用javamail发送附件的问题! 求教URL转码问题 如何让JList支持多选? 各位给我个真诚的建议,现在处于极度的郁闷和痛苦之中!!!!!
import java.sql.*;public class JDBCAccess
{
public static void main(String[] args)
{
String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
String fileName="TestDB.mdb";
String url = "jdbc:odbc:DRIVER=Microsoft Access Driver (*.mdb);DBQ="+fileName;
System.out.println(url);
try
{
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, "", "");
Statement stmt=conn.createStatement();
String sql="select * from table1";
ResultSet rs=stmt.executeQuery(sql);
while(rs.next())
{
System.out.println(rs.getString("test1"));
}
}
catch(ClassNotFoundException cnfe) {
System.out.println(cnfe);
//throw new Exception("不能找到Access数据库的驱动程序 ");
}
catch (SQLException sqle)
{
System.out.println(sqle);
//throw new SQLException("不能连接到Access数据库 ");
}
}
}
Connection conn = DriverManager.getConnection(strUrl,strUser,strPassword);
省掉了很多代码吧,给你一个比较完整的参考一下:
import java.sql.*;class testMSJdbc{
public static void main(String args[]){
try{
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
Connection con = DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=Northwind;User=sa;Password=8888");
Statement st = con.createStatement();
String sql_str = "select CustomerID, CompanyName, ContactName from Customers order by CustomerID";
ResultSet rs = st.executeQuery(sql_str);
while(rs.next())
{
System.out.print(rs.getString("CustomerID") + " ");
System.out.print(rs.getString("CompanyName") + " ");
System.out.println(rs.getString("ContactName"));
}
rs.close();
st.close();
}
catch(Exception err){
err.printStackTrace(System.out);
}
}
}