代码：
package com.jdbc;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class Jdbc {
private static final String URL ="jdbc:mysql://127.0.0.1:3306/lee";
private static final String USER="root";
private static final String PASSWORD ="123";
public static void main (String[ ] args) throws Exception {
//1.加载驱动程序
Class.forName("com.mysql.jdbc.Driver");
//2.获得数据库的连接
Connection conn = DriverManager.getConnection(URL, USER, PASSWORD);
//3.通过数据库的连接操作数据库，实现增删改查；
Statement stat = conn.createStatement();
ResultSet rs = stat.executeQuery("select user_name,age from immoc_goddess");
while (rs.next()) {
System.out.println(rs.getString("user_name")+","+rs.getString("age"));
}
}
}
下面是异常；
异常：Exception in thread "main" java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at com.jdbc.Jdbc.main(Jdbc.java:17) |
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