[android] 14_POST方式提交数据-HttpUrlConnection

POST方式提交数据

// 1.设置请求方式为 post

conn.setRequestMethod("POST");

// 2. 设置请求的头

conn.setRequestProperty("Content-Type","application/x-www-form-urlencoded");

String data = "username=" + URLEncoder.encode(username,"utf-8")+ "&password=" + URLEncoder.encode(password,"utf-8");

conn.setRequestProperty("Content-Length",String.valueOf(data.length()));

conn.setConnectTimeout(5000);

// 3.设置允许向服务器写数据

conn.setDoOutput(true);

// 4.把数据写给服务器

conn.getOutputStream().write(data.getBytes());