reference to : http://blog.csdn.net/jsjwbxzy/article/details/45970231
try { des = URLEncoder.encode(des, "UTF-8"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); }
[Android Pro] http请求中传输base64出现加号变空格的解决办法
原文：http://www.cnblogs.com/0616--ataozhijia/p/5961415.html