io.afu.utils.http.Downloader Maven / Gradle / Ivy

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package io.afu.utils.http;

import io.afu.common.exception.BaseException;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;

public class Downloader {

    /**
     *
     * @param url 下载路径
     * @param savePath 保存路径
     * @throws BaseException 错误抛出
     */
    public static void d(String url,String savePath) throws BaseException {
        CloseableHttpClient httpClient = HttpClients.createDefault();
        try {
            HttpGet httpGet = new HttpGet(url);
            CloseableHttpResponse response = httpClient.execute(httpGet);
            try {
                File file = new File(savePath);
                if (!file.getParentFile().exists()){
                    if (!file.getParentFile().mkdirs()){
                        System.out.println("创建文件夹失败");
                        throw new BaseException("创建文件夹失败",-1);
                    }
                }
                httpGet.addHeader("User-Agent","Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36");
                HttpEntity entity = response.getEntity();
                long len = entity.getContentLength();
                InputStream inputStream = entity.getContent();
                FileOutputStream fileOutputStream = new FileOutputStream(new File(savePath));
                int inByte;
                while ((inByte = inputStream.read()) != -1){
                    fileOutputStream.write(inByte);
                }
                inputStream.close();
                fileOutputStream.close();
            }catch (Exception e){
                throw new BaseException(e);
            }
            finally {
                try {
                    response.close();
                }catch (Exception e){
                    throw new BaseException(e);
                }
            }
        }catch (Exception e){
            throw new BaseException(e);
        }
        finally {
            try {
                httpClient.close();
            }catch (Exception e){
                throw new BaseException(e);
            }

        }
    }






}