在servlet用getOutputStream输出中文问题

//在servlet用getOutputStream输出中文问题public class ResponseDemo1 extends HttpServlet {    @Override    protected void doGet(HttpServletRequest req, HttpServletResponse response)            throws ServletException, IOException {        test2(response);    }    private void test2(HttpServletResponse response) throws IOException,            UnsupportedEncodingException {        String data="中国2 ";        //html: <meta>标签也可以模拟一个http响应头        OutputStream out=response.getOutputStream();        //out.write(data.getBytes());        out.write("<meta http-equiv='content-type'content='text/html;charset=UTF-8'>".getBytes());        out.write(data.getBytes("UTF-8"));    }    private void test1(HttpServletResponse response) throws IOException,    UnsupportedEncodingException {        String data="中国 ";        //程序以什么码表输出，一定要控制浏览器以什么码表打开        response.setHeader("Content-type", "text/html;charset=UTF-8");——控制浏览器用UTF-8来打开        OutputStream out=response.getOutputStream();        //out.write(data.getBytes());        out.write(data.getBytes("UTF-8"));——用UTF-8输出数据    }下面写错了，浏览器会提示下载private void test1(HttpServletResponse response) throws IOException,    UnsupportedEncodingException {        String data="中国 ";        //程序以什么码表输出，一定要控制浏览器以什么码表打开        response.setHeader("Content-type", "text/html,charset=UTF-8");——控制浏览器用UTF-8来打开        OutputStream out=response.getOutputStream();        //out.write(data.getBytes());        out.write(data.getBytes("UTF-8"));——用UTF-8输出数据    }}要是输出数字5，一定要变成字符串，否则浏览器直接查表找5对应的字符去了