学习了:http://blog.csdn.net/u013791374/article/details/53258275
膜拜一下,源码如下:
@RequestMapping(value="create") public String create(@RequestParam MultipartFile file, HttpServletRequest request, HttpServletResponse response, HttpSession httpSession, RedirectAttributes attr){ try { String fileName = file.getOriginalFilename(); fileName = URLEncoder.encode(fileName, "UTF-8");// 进行中文处理 String UPLOAD_PATH = File.separator + "upload" + File.separator + "img" + File.separator; String path = request.getSession().getServletContext().getRealPath(UPLOAD_PATH); String pathFileName = path + File.separator + fileName; file.transferTo(new File(pathFileName)); JSONObject mediaJson = addMaterialEver(pathFileName, "image", accessToken.getAccessToken()); if (mediaJson != null) { Media media = new Media(); media.setMediaId(mediaJson.getString("media_id")); media.setUrl(mediaJson.getString("url")); media.setUpdateTime(new Date()); media.setUrl2(fileUpload.fileUpload(file, "", request, response)); mediaMapper.insertSelective(media); attr.addFlashAttribute("message", "成功添加图片信息!"); } else { attr.addFlashAttribute("message", "添加图片出现问题,请与管理员联系!"); } } catch (Exception e) { e.printStackTrace(); } return "redirect:index.do"; } /** * 上传其他永久素材(图片素材的上限为5000,其他类型为1000) * * @return * @throws Exception */ public JSONObject addMaterialEver(String fileurl, String type, String token) { try { File file = new File(fileurl); //上传素材 String path = "https://api.weixin.qq.com/cgi-bin/material/add_material?access_token=" + token + "&type=" + type; String result = connectHttpsByPost(path, null, file); result = result.replaceAll("[\\\\]", ""); System.out.println("result:" + result); JSONObject resultJSON = JSONObject.fromObject(result); if (resultJSON != null) { if (resultJSON.get("media_id") != null) { System.out.println("上传" + type + "永久素材成功"); return resultJSON; } else { Integer errcode = (Integer) resultJSON.get("errcode"); if(errcode -40001 == 0 ){ accessToken.delAccessToken(); } System.out.println("上传" + type + "永久素材失败"); } } return null; } catch (Exception e) { e.printStackTrace(); } return null; } public static String connectHttpsByPost(String path, String KK, File file) throws IOException, NoSuchAlgorithmException, NoSuchProviderException, KeyManagementException { URL urlObj = new URL(path); //连接 HttpURLConnection con = (HttpURLConnection) urlObj.openConnection(); String result = null; con.setDoInput(true); con.setDoOutput(true); con.setUseCaches(false); // post方式不能使用缓存 // 设置请求头信息 con.setRequestProperty("Connection", "Keep-Alive"); con.setRequestProperty("Charset", "UTF-8"); // 设置边界 String BOUNDARY = "----------" + System.currentTimeMillis(); con.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDARY); // 请求正文信息 // 第一部分: StringBuilder sb = new StringBuilder(); sb.append("--"); // 必须多两道线 sb.append(BOUNDARY); sb.append("\r\n"); sb.append("Content-Disposition: form-data;name=\"media\";filelength=\"" + file.length() + "\";filename=\"" + file.getName() + "\"\r\n"); sb.append("Content-Type:application/octet-stream\r\n\r\n"); byte[] head = sb.toString().getBytes("utf-8"); // 获得输出流 OutputStream out = new DataOutputStream(con.getOutputStream()); // 输出表头 out.write(head); // 文件正文部分 // 把文件已流文件的方式 推入到url中 DataInputStream in = new DataInputStream(new FileInputStream(file)); int bytes = 0; byte[] bufferOut = new byte[1024]; while ((bytes = in.read(bufferOut)) != -1) { out.write(bufferOut, 0, bytes); } in.close(); // 结尾部分 byte[] foot = ("\r\n--" + BOUNDARY + "--\r\n").getBytes("utf-8");// 定义最后数据分隔线 out.write(foot); out.flush(); out.close(); StringBuffer buffer = new StringBuffer(); BufferedReader reader = null; try { // 定义BufferedReader输入流来读取URL的响应 reader = new BufferedReader(new InputStreamReader(con.getInputStream())); String line = null; while ((line = reader.readLine()) != null) { buffer.append(line); } if (result == null) { result = buffer.toString(); } } catch (IOException e) { System.out.println("发送POST请求出现异常!" + e); e.printStackTrace(); } finally { if (reader != null) { reader.close(); } } return result; }