Java 微信公众号上传永久素材的方法

@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;
}