Class.forName(driver)出错。(解决)

Class.forName(“com.mysql.jdbc.Driver”);木有问题。

Class.forName(driver);则出错。

但是driver = com.mysql.jdbc.Driver

源码：

package test20160319;

import java.io.FileInputStream;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.util.Properties;

public class ExecuteDLL {
private String driver;
private String url;
private String user;
private String pass;

public void initParam(String paraFile) throws Exception, IOException{
Properties props = new Properties();
props.load(new FileInputStream(paraFile));
driver = props.getProperty("driver");
url = props.getProperty("url");
user = props.getProperty("user");
pass = props.getProperty("pass");
System.out.println("driver:"+driver);
}

public void createTable(String sql) throws Exception{
//Class.forName("com.mysql.jdbc.Driver");
Class.forName(driver);
try(
Connection conn = DriverManager.getConnection(url,user,pass);
//Connection conn = DriverManager.getConnection(url+"?"+"user="+user+"&password="+pass);
Statement stmt = conn.createStatement()){
stmt.executeUpdate(sql);
}
}
public static void main(String[] args) throws Exception, Exception {
// TODO Auto-generated method stub
new ExecuteDLL().initParam("paramFile.ini");
new ExecuteDLL().createTable("create table jdbc_test(jdbc_id int auto_increment primary key,jdbc_name varchar(255),jdbc_desc text );");
}
}

配置文件：

[JDBC]
driver = com.mysql.jdbc.Driver
url = jdbc:mysql://localhost:3306/bbs
username = test
password = test

出错的地方在：

new ExecuteDLL().initParam("paramFile.ini");
new ExecuteDLL().createTable("create table jdbc_test(jdbc_id int auto_increment primary key,jdbc_name varchar(255),jdbc_desc text );");

new了两次后，不是同一对像，所以找不到。