JSP response request 中文乱码

初学JSP，发现response，request都是乱码，弄得我都抓狂了。各种纠结之后，发现几点

1. Eclipse文件编辑器的默认编码不一定是utf-8，所以开发之前最好把默认编码修改下。
   Eclipse-->windows->preference->General->Content Types-->右侧的Content Type中选中 Text->JSP 将默认编码改为“ISO-8859-1”
2. 修改Eclipse中workspace中的编码
   Eclipse-->windows->preference->General->Workspace-> Text file encoding 改为 UTF-8
   
   下面是一个【代码示例】，JSP从request中获取数据后，原文反馈给客户端。
   

   String strResponse = "";
   request.setCharacterEncoding("utf-8");
   ServletInputStream in = request.getInputStream();
   BufferedReader br = new BufferedReader(
   		new InputStreamReader(in));
   String strLine = null;
   while (null != (strLine = br.readLine())) {
   	strResponse += strLine;
   }
   
   byte[] xmlData = strResponse.getBytes();
   response.setCharacterEncoding("utf-8");
   response.setContentType("text/html, charset=utf-8");
   response.setContentLength(xmlData.length);
   ServletOutputStream os = response.getOutputStream();
   os.write(xmlData);
   os.flush();
   os.close();
   out.clear();
   out = pageContext.pushBody();