4dkankan-scene-download-tool/src/main/java/com/fdkankan/download/util/DownloadUtil.java

package com.fdkankan.download.util;

import cn.hutool.core.io.FileUtil;
import cn.hutool.core.thread.ThreadUtil;
import cn.hutool.core.util.RuntimeUtil;
import cn.hutool.http.HttpUtil;
import com.fdkankan.common.exception.BusinessException;
import com.fdkankan.common.util.CmdUtils;

import java.io.File;

/**
 * @author Xiewj
 * @date 2024/1/12
 */
public class DownloadUtil {
    public final static String WGET_CMD = "wget -t 10 -N -O @out @url";

    public static void downFile(String url, String path) throws Exception {
        String cmd = WGET_CMD.replace("@out",path).replace("@url",url);
        RuntimeUtil.exec(cmd);
    }
    public static void downloadFile(String url, String path,int index){
        File file = new File(path);
        if(!file.getParentFile().exists()){
            file.getParentFile().mkdirs();
        }
        try {
            if(FileUtil.size(new File(path)) == 0 ){
                while (index<=50){
                    index++;
                    DownloadUtil.downFile(url,path);
                    if (FileUtil.size(new File(path))>0){
                        return;
                    }
                    ThreadUtil.safeSleep(500);

//                    HttpUtil.downloadFileFromUrl(url,path);
                }
            }
        } catch (Exception e) {
            throw new BusinessException(-1,"下载报错停止,"+url+","+path);
        }
    }
}