java 实现微信服务器下载图片到自己服务器

此功能的实现需要注意java 中IO流的操作及网路开发，

实现代码：

/** * @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 = "http://file.api.weixin.qq.com/cgi-bin/media/get?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-/cgi-bin/media/get?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:/"); } }

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