方法一：
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
OutputStream os=response.getOutputStream();
os.write("<meta http-equiv='Content-Type' content='text/html; charset=gb2312'>".getBytes());
os.write("我爱我家".getBytes());
os.close();
}
方法二：
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out=response.getWriter();
out.write("我爱我家");
out.close();
}
方法三：（上传文件时，火狐浏览器的中文转码问题）
response.setHeader("Content-Disposition","attachment;filename*=utf-8'zh_cn'"+URLEncoder.encode(
file.getName().substring(file.getName().lastIndexOf("_") + 1),"UTF-8"));
方法四：（struts下载文件时，火狐浏览器的中文转码问题）
this.fileName = new String(fileName.getBytes(), "ISO8859-1");
方法五：使用jsp表单提交可自动解决编码问题