微信 创建自定义菜单 向微信发起的post请求

Map<String, Object> res = new HashMap<String, Object>();
try {
String accessToken = accessTokenService.getAccessToken();
if ("".equals(accessToken)) {
res.put("res", "获取微信access_token失败，请与管理员联系");
return res;
}
String action = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=" + accessToken;
URL url = new URL(action);
HttpURLConnection http = (HttpURLConnection) url.openConnection();
http.setRequestMethod("POST");
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();
OutputStream os = http.getOutputStream();
os.write(data.getBytes("UTF-8"));// 传入参数
os.flush();
os.close();
InputStream is = http.getInputStream();
int size = is.available();
byte[] jsonBytes = new byte[size];
is.read(jsonBytes);
String message = new String(jsonBytes, "UTF-8");
System.out.println(message);
res.put("res", "成功创建自定义菜单。请取消关注然后再次关注查看自定义菜单结果。");
} catch ( Exception e) {
e.printStackTrace();
res.put("res", "创建自定义菜单失败，错误信息"+e.getMessage()+",请与管理员联系。");
}