今天从开始写了一个jdbc连接mysql驱动的程序

　　真的是各种报错啊

首先这是代码

package com.dmeck;import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;public class Jdbcbase {	public static void main(String[] args) {		String url = "jdbc:mysql://localhost:3306/mytest";		String user="root";		String pass="mysql" ;		String className="com.mysql.jdbc.Driver";		try{			Class.forName(className);		}catch(Exception e) {            System.out.print("Error loading Mysql Driver!");            e.printStackTrace();		}		Connection connection;		try {						connection = DriverManager.getConnection(url, user, pass);			Statement createStatement = connection.createStatement();			ResultSet query = createStatement.executeQuery("select * from user");			while(query.next()) {				System.out.println(query.getString("user"));			}			connection.close();		} catch (SQLException e) {			// TODO Auto-generated catch block			e.printStackTrace();		}			}}

　　嗯，先说下问题

项目运行时会出现

Error loading Mysql Driver!java.lang.ClassNotFoundException: com.mysql.jdbc.Driver    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)    at java.lang.Class.forName0(Native Method)    at java.lang.Class.forName(Class.java:264)    at com.dmeck.Jdbcbase.main(Jdbcbase.java:17)java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/mytest    at java.sql.DriverManager.getConnection(DriverManager.java:689)    at java.sql.DriverManager.getConnection(DriverManager.java:247)    at com.dmeck.Jdbcbase.main(Jdbcbase.java:25)

首先这个错误我无法复现，因为我的项目是maven管理的

　　　　jdbc驱动是5.1.6

　　这个错误是因为maven网络不好而引起的jar包出现错误，只要eclispe加载jar的字节文件不是下列现象就说明你的jar包有问题