java通过post下载文件的方法

1、您最好的选择可能是使用第三方库，如HttpClient或HTMLUnit。

2、如果你喜欢用标准api，也很简单。代码如下：

3、Stdata = URLEncoder.encode("key1", "稆糨孝汶;UTF-8") + "=" + URLEncoder.encode("value1", "UTF-8");data += "&" + URLEncoder.encode("key2", "UTF-8") + "=" + URLEncoder.encode("value2", "UTF-8");URL url = new URL("http://hostname:80/cgi");URLConnection conn = url.openConnection();conn.setDoOutput(true);OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());wr.write(data);wr.flush();BufferedReader rd = new BufferedReader( new InputStreamReader(conn.getInputStream()));String line;while ((line = rd.readLine()) != null) { }wr.close();rd.close();