/** * @author why * */public class PicDownload {/** * * 根据文件id下载文件 * * * * @param mediaId * * 媒体id * * @throws Exception */public static Inp

/**

* @author why

*

*/

public class PicDownload {

/**

*

* 根据文件id下载文件

*

*

*

* @param mediaId

*

*

媒体id

*

* @throws Exception

*/

public static InputStream getInputStream(String accessToken, String mediaId) {

InputStream is = null;

String url = "?access_token="

+ accessToken + "&media_id=" + mediaId;

try {

URL urlGet = new URL(url);

HttpURLConnection http = (HttpURLConnection) urlGet

.openConnection();

http.setRequestMethod("GET"); // 必须是get方式请求

http.setRequestProperty("Content-Type",

"application/x-www-form-urlencoded");

http.setDoOutput(true);

http.setDoInput(true);

System.setProperty("sun.net.client.defaultConnectTimeout", "30000");// 连接超时30秒

System.setProperty("sun.net.client.defaultReadTimeout", "30000"); // 读取超时30秒

http.connect();

// 获取文件转化为byte流

is = http.getInputStream();

} catch (Exception e) {

e.printStackTrace();

}

return is;

}

/**

*

* 获取下载图片信息(jpg)

*

*

*

* @param mediaId

*

*

文件的id

*

* @throws Exception

*/

public static void saveImageToDisk(String accessToken, String mediaId, String picName, String picPath)

throws Exception {

InputStream inputStream = getInputStream(accessToken, mediaId);

byte[] data = new byte[10240];

int len = 0;

FileOutputStream fileOutputStream = null;

try {

fileOutputStream = new FileOutputStream(picPath+picName+".jpg");

while ((len = inputStream.read(data)) != -1) {

fileOutputStream.write(data, 0, len);

}

} catch (IOException e) {

e.printStackTrace();

} finally {

if (inputStream != null) {

try {

inputStream.close();

} catch (IOException e) {

e.printStackTrace();

}

}

if (fileOutputStream != null) {

try {

fileOutputStream.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

}

/**

* 图片下载

*

* @param accessToken

* @param mediaId

*/

public static void getPic(String accessToken, String mediaId) {

String requestUrl = "?access_token=ACCESS_TOKEN&media_id=MEDIA_ID";

requestUrl = requestUrl.replace("ACCESS_TOKEN", accessToken).replace(

"MEDIA_ID", mediaId);

JSONObject jsonObject = WeixinUtil.httpRequest(requestUrl, "GET", null);

System.out.println(jsonObject);

}

public static void main(String[] args) throws Exception {

String accessToken = "";

String mediaId = "";

String picName = "";

saveImageToDisk(accessToken, mediaId, picName,"f:/");

}

}

版权声明：本文为博主原创文章，，未经博主允许不得转载。