URLDecoder()问题

package com.imooc.jdbc.sample;

import com.alibaba.druid.pool.DruidDataSourceFactory;
import com.imooc.jdbc.common.DbUtils;

import javax.sql.DataSource;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.net.URLDecoder;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.Properties;

/**
 * Druid链接池配置与使用
 */
public class DruidSample {
    public static void main(String[] args) {
        //1、加载属性文件
        Properties properties=new Properties();
        String propertyFile=DruidSample.class.getResource("/druid-confid.properties").getPath();

        try {
            propertyFile= new URLDecoder().decode(propertyFile,"UTF-8");
            properties.load(new FileInputStream(propertyFile));
        } catch (Exception e) {
            e.printStackTrace();
        }

        Connection conn=null;
        PreparedStatement pstmt=null;
        ResultSet rs=null;
        try {
            //2、获取DataSource数据源对象
            DataSource dataSource=DruidDataSourceFactory.createDataSource(properties);
            //3、创建数据库连接
            conn=dataSource.getConnection();
            pstmt=conn.prepareStatement("select * from employee limit 0,10");
            rs=pstmt.executeQuery();
            while(rs.next()){
                Integer eno=rs.getInt(1);//JDBC中字段索引从1开始，而不是0
                String ename=rs.getString("ename");
                Float salary=rs.getFloat("salary");
                String dname = rs.getString("dname");
                System.out.println(dname+"-"+eno+"-"+ename+"-"+salary);
            }

        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            DbUtils.closeConnection(rs,pstmt,conn);
        }

    }
}

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