下载微信小程序-小语音包音频文件到本地,源代码

package com.dc.controller;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import org.apache.commons.io.FileUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.List;

/**
 * Project: test
 * Package: console.controller
 * Author: Yanchao
 * CreateTime: 2020-02-17 17:30:48
 * Description:
 */
@RestController
@RequestMapping("/down")
public class DownFileController {
    RestTemplate restTemplate = new RestTemplate();
    private static final Logger logger = LoggerFactory.getLogger(DownFileController.class);
    ResponseEntity<JSONObject> response = null;

    @PostMapping("/start")
    public String start() throws IOException {

        HttpHeaders header = new HttpHeaders();
        JSONObject jsonObject = new JSONObject();
        header.setContentType(MediaType.APPLICATION_JSON);
        HttpEntity<String> request = new HttpEntity<>(jsonObject.toString(), header);
        response = restTemplate.postForEntity("https://app.mmteck.cn/voice/api/voice/index.ashx?action=typelist", request, JSONObject.class);
        JSONObject results = response.getBody();
        JSONArray datas = results.getJSONArray("rows");
        List<ReceiveData> list = datas.toJavaList(ReceiveData.class);
        for (int i = 0; i < list.size(); i++) {
            String id = list.get(i).getId();
            String foldername = list.get(i).getName();
            Download(id, foldername);
            logger.info("开始下载 {}", foldername);
        }
        return "ok";
    }

    /**
     * 定义下载的文件夹名称
     * @param typeid
     * @param foldername
     * @throws IOException
     */
    public void Download(String typeid,String foldername) throws IOException {
        MultiValueMap<String, Object> map = new LinkedMultiValueMap<>();
        map.add("typeid", typeid);
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("typeid", typeid);
        HttpHeaders header = new HttpHeaders();
        header.setContentType(MediaType.APPLICATION_JSON);
        HttpEntity<String> request = new HttpEntity<>(jsonObject.toString(), header);
        response = restTemplate.postForEntity("https://app.mmteck.cn/voice/api/voice/index.ashx?action=voicedata", request, JSONObject.class);
        JSONObject results = response.getBody();
        logger.info("返回数据为 {}", results.toString());
        JSONArray datas = results.getJSONArray("rows");
        List<ReceiveData> list = datas.toJavaList(ReceiveData.class);
        if (list.size() > 0) {
            for (int i = 0; i < list.size(); i++) {
                String url = "https:" + list.get(i).getSrc();
                String fileName = list.get(i).getName() + ".mp3";
                String dir = "OJ";
                downloadHttpUrl(url, dir, fileName, foldername);
                logger.info("开始下载 {}", fileName);
            }
        }
    }
    public void downloadHttpUrl(String url, String dir, String fileName, String foldername) throws IOException {
        URL urlPath = new URL(url);
        File file = new File(dir);
        if (!file.exists()) {
            file.mkdirs();
        }
        FileUtils.copyURLToFile(urlPath, new File("E:/A_Voice_down/" + foldername, fileName));

    }


    //接受数据的封装对象
    class ReceiveData {
        String name ;
        String src;
        String id;

        public String getId() {
            return id;
        }

        public void setId(String id) {
            this.id = id;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public String getSrc() {
            return src;
        }

        public void setSrc(String src) {
            this.src = src;
        }
    }

}