android向web提交数据，中文乱码

====================问题描述====================
源码如下所示，这时候“张三”这个字符到web已经是两个“??”,怎么破，查了不少方法，
如URLDecoder.decode(“张三”, "utf-8")，或者"张三".getBytes()都不好用啊，求破
public static String GetXml() throws Exception {
URL postUrl = new URL(“http://10.0.2.2:1234/Android/ANewsManager.aspx?do=add&name=张三”);
HttpURLConnection connection = (HttpURLConnection) postUrl
.openConnection();
connection.setDoInput(true);
connection.setRequestMethod("GET");
connection.setUseCaches(false);
connection.setInstanceFollowRedirects(true);
connection.setRequestProperty("Content-Type", "text/xml");
connection.connect();
BufferedReader reader = new BufferedReader(new InputStreamReader(
connection.getInputStream(), "utf-8"));// 设置编码,否则中文乱码
String line = "";
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null) {
sb.append(line);
}
reader.close();
connection.disconnect();
return sb.toString();
}
====================解决方案1====================
那你的web那边是不是也是使用的utf-8编码呢
====================解决方案2====================

StringWriter writer = new StringWriter();
IOUtils.copy(conn.getInputStream(), writer,"UTF-8");

你这个方法试试
====================解决方案3====================
直接用浏览器提交你这个地址 http://10.0.2.2:1234/Android/ANewsManager.aspx?do=add&name=张三 你就能在地址栏看到是编码成什么样子了，也好测试返回的正常与否
====================解决方案4====================
把UTF-8改成GBK试试