JAVA代码实现文件下载，网络URL的下载到本地指定目录，删除。文件的上传

先是上代码

package org.jeecgframework.web.oct.oa.purchase.service.impl;

import org.junit.Test;
import java.io.*;
import java.net.URL;
import java.net.URLConnection;


/**
 * @author ：wuqp(wuqp@octvision.com)
 * @date ：Created in 2022/11/24 10:38
 * @description：ceshi
 * @modified By：
 * @version: 1.0$
 */
public class TestUpload {
    /**
     * @从制定URL下载文件并保存到指定目录
     * @param filePath 文件将要保存的目录
     * @param method 请求方法，包括POST和GET
     * @param url 请求的路径
     * @return
     */
@Test
    public  void testwqp() throws IOException {

        String urlPath =  "http://文件下载的地址";   //文件URL地址
        String cookie = "JEECGINDE~~~~~~~~~~ECw";
        URL url = new URL(urlPath);
        URLConnection conn = url.openConnection();
        conn.setRequestProperty("Cookie", cookie);
        conn.setDoInput(true);
        BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        InputStream inputStream = conn.getInputStream();
    byte[] buffer = new byte[1024*1024];
    int len;
    java.io.ByteArrayOutputStream byteArrayOutputStream = new java.io.ByteArrayOutputStream();
    while ((len = inputStream.read(buffer)) != -1) {
        byteArrayOutputStream.write(buffer, 0, len);
    }
    byteArrayOutputStream.close();
    File file = new File("D:/Data/octOaContactFileTemp/" + "png.png");
    FileOutputStream fileOutputStream = new FileOutputStream(file);
    fileOutputStream.write(byteArrayOutputStream.toByteArray());
    fileOutputStream.close();
    inputStream.close();
    System.out.println("下载成功：" + "D:/Data/octOaContactFileTemp/" + "png.png");
    }

@Test
    public void deleteFile()
    {
        String filePath="D:/Data/octOaContactFileTemp/png.png";
        boolean flag = false;
        File file = new File(filePath);
        // 路径为文件且不为空则进行删除
        if (file.isFile() && file.exists())
        {
            file.delete();
            flag = true;
        }
//        return flag;
    }


}


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