如何运行mysql连接的java文件？

Question

任何人都可以帮我如何运行这段代码......

如果我编译这段代码它成功符合,但是当我运行类文件时抛出

这是该异常的堆栈跟踪:

Exception: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
    java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:169)
        at ExportData.main(ExportData.java:13)

这是代码:

import java.io.*; 
import java.sql.*;

public class SampleMysql {
    public static void main(String args[]) {
        String Driver;
        Statement stmt; 
        ResultSet rs; 
        Driver = "com.mysql.jdbc.Driver";
        Connection con = null;

        try {
            Class.forName(Driver);
            con = DriverManager.getConnection("jdbc:mysql://localhost:3306/TempAttendance","root", password); 

            if(!con.isClosed()){

                System.out.println("Successfully connected to MySQL DataBase \n");
                stmt = con.createStatement(); 
                String tablename = "Employee_Master";
                String sql;

                rs = stmt.executeQuery("select * from Employee_Master");

                while(rs.next()) {
                    System.out.print(rs.getString("Name"));
                }
            }
        } catch(Exception e) {
            System.err.println("Exception: " + e.getMessage());
        }  finally {
            try {
                if(con != null)
                    con.close();
            } catch(SQLException e) {
            }
        }
    }
}

Answer 1

您应该下载并将驱动程序jar(mysql jar)文件放在类路径中

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