获取七牛网络音频时长

云存储一般都提供有获取音频详细信息的api

http://resource.puxinwangxiao.com/71d03d54014e5545e04a83d116c75c9b.wav?avinfo

文件保存在七牛云上，通过avinfo获取音频信息，部分信息如下:

"format": {

"nb_streams": 2,

"nb_programs": 0,

"format_name": "mp3",

"format_long_name": "MP2/3 (MPEG audio layer 2/3)",

"start_time": "0.025056",

"duration": "186.383673",

"size": "3463288",

"bit_rate": "148651",

"probe_score": 51,

"tags": {

"encoder": "Lavf57.71.100",

"comment": "163 key(Don't modify):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",

"album": "陪着你走 Accompany you go",

"title": "陪着你走",

"artist": "Gibb-Z/ICE",

"track": "1"

}

}

 

其中duration为186秒。

/**
     * 获取七牛音频时长
     * @param audioUrl
     * @return
     */
    @PostMapping("/get_audio_time")
    public Result getAudioTime(@RequestParam("audioUrl") String audioUrl) {
        String audioTime = "";
        if(null != audioUrl && "".equals(audioUrl))
            return Result.get(Result.ERROR, "音频路径为空，无法获取时长", "");
        try {
            HttpGet req = new HttpGet(audioUrl + "?avinfo");
            String rep = HttpClientUtils.execute(req);
            if(StringUtils.isNotBlank(rep)){
                JSONObject repjson = JSONObject.fromObject(rep);
                JSONObject repjson2 = (JSONObject) repjson.get("format");
                audioTime = String.valueOf(repjson2.get("duration")==null?"":repjson2.get("duration"));
                if(audioTime == null) audioTime = "";
                if(audioTime.indexOf(".") > 0) audioTime = audioTime.substring(0,audioTime.indexOf("."));
            }
        }catch (Exception e) {
            logger.error(e.getMessage(),e);
            return Result.get(Result.ERROR, e.getMessage(), e);
        }
        return Result.get(Result.OK, "",audioTime );
    }

package com.puxinwangxiao.mts.util;

import org.apache.http.HttpEntity;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;


public class HttpClientUtils {
    private static Logger logger = LoggerFactory.getLogger(HttpClientUtils.class);

    public static String execute(HttpUriRequest request){
        CloseableHttpClient client = HttpClients.createDefault();
        String responseStr =null;
        CloseableHttpResponse response = null;
        if(client!=null){
            try {
                response = client.execute(request);
                StatusLine status = response.getStatusLine();
                Integer code = status.getStatusCode();
                if(code==200){
                    HttpEntity entity = response.getEntity();
                    responseStr =  EntityUtils.toString(entity);
                 
                }            
            } catch (ClientProtocolException e) {
                logger.error("HttpClientUtils--execute:",e);
            } catch (IOException e) {
                logger.error("HttpClientUtils--execute:",e);
            }finally{
                 try {
                    response.close();
                } catch (IOException e1) {
                    e1.printStackTrace();
                }                 
                // 关闭连接,释放资源
                    try {  
                        client.close();  
                    } catch (IOException e) {  
                        logger.error("HttpClientUtils--execute:",e);
                    }  
            }
        }
        return responseStr;
    }
}