无法导入JUnit包

依然报错，按照网上在url后面添加参数，还是报错。错误信息见截图。

package com.imooc.jdbc.demo1;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.SQLException;

import java.sql.Statement;

import org.junit.Test;

public class JDBCDemo1 {

@Test

public void demo1() {

Connection conn=null;

Statement stmt=null;

try {

Class.forName("com.mysql.cj.jdbc.Driver");

conn=DriverManager.getConnection("jdbc:mysql:///jdbctest?useUnicode=true＆characterEncoding=utf-8＆useSSL=false＆serverTimezone=GMT","root","123456");

stmt=conn.createStatement();

String sql="insert into user values(null,'eee','123','张三')";

int i=stmt.executeUpdate(sql);

if(i>0) {

System.out.println("保存成功！");

}

}catch(Exception e) {

e.printStackTrace();

}finally {

if(stmt!=null) {

try {

stmt.close();

} catch (SQLException e) {

e.printStackTrace();

}

stmt=null;

}

if(conn!=null) {

try {

conn.close();

} catch (SQLException e) {

e.printStackTrace();

}

conn=null;

}

}

}

}