response通过writer输出数据

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {//设置response以什么码表向浏览器写response.setCharacterEncoding("utf-8");//指定浏览器以什么码表打开response.setHeader("content-type", "text/html;charset=utf-8");String data = "世界";PrintWriter out = response.getWriter();out.write(data);}

更简单的可以直接改成

response.setContentType("text/html;charset=utf-8");String data = "世界";PrintWriter out = response.getWriter();out.write(data);