所以我想检索表格的一行,但首先我想让它工作,然后我会做其余的工作,所以下面是代码:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.io.*;
import java.util.*;
import java.sql.*;
public class ExampleForDB {
public static void main(String[] args) throws SQLException, ClassNotFoundException {
try{
Class.forName("com.mysql.jdbc.Driver");
Connection con=DriverManager.getConnection(
"jdbc:mysql://localhost:3306/******","*****","******");
System.out.print("Successful connection with MySQL!");
//here sonoo is database name, root is username and password
Statement stmt=con.createStatement();
ResultSet rs=stmt.executeQuery("select Number1 from lottery1955-00 where id=1");
System.out.println(rs.getInt(1)+" "+rs.getString(1));
con.close();
}catch (SQLException e ) {
e.printStackTrace();
}
}
}
在这里,您可以看到我的错误,我尝试了很多不同的方式,我在StackOverflow中找到了这些方法,但它们都没有为我工作,你能分享一下你的经验吗? 看到下面的错误
Exception in thread "main" java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at ExampleForDB.main(ExampleForDB.java:16)