Jenkins共享库无法找到SQL驱动程序

这是Jenkins共享库中的新类.

共享库通过Manage Jenkins> Configure System下的标准方法加载

package com.mycorp.core;

@Grab(group='com.microsoft.sqlserver', module='mssql-jdbc', version='6.4.0.jre8')
import com.microsoft.sqlserver.jdbc.SQLServerDriver
import groovy.sql.Sql

class MySQLClass implements Serializable {
    def dbconnection
    def dbURL
    def dbUsername
    def dbPassword
    def dbDriver

    MySQLClass(databaseConfig) {
        //Set any instance variables required.    
        this.dbURL = databaseConfig.sql.url
        this.dbUsername = databaseConfig.sql.username
        this.dbPassword = databaseConfig.sql.password
        this.dbDriver = databaseConfig.sql.driver
    }

    def getConnection() {
        return Sql.newInstance(dbURL,dbUsername,dbPassword,dbDriver)
    }
}

def databaseConfig = [
    url: 'jdbc:sqlserver://myhost:1433;databaseName=mydatabase',
    user: 'user',
    password: 'password',
    driver: 'com.microsoft.sqlserver.jdbc.SQLServerDriver'
]

java.sql.SQLException: No suitable driver found for jdbc:sqlserver://myhost:1433;databaseName=mydatabase
    at java.sql.DriverManager.getConnection(DriverManager.java:689)
    at java.sql.DriverManager.getConnection(DriverManager.java:247)

@GrabConfig(systemClassLoader = true)