servlet乱码 解决方法 2种方法

public class ResponseDemo1 extends HttpServlet {
	public  void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		test1(resp);
	}

　　
　　//方法1:
    public void test1(HttpServletResponse resp) throws IOException, UnsupportedEncodingException {
        resp.setHeader("Content-type", "text/html;charset=utf-8");
        String data = "中国";
        OutputStream output = resp.getOutputStream();
        //程序以什么编码输出,那么一定要设置浏览为相对应的编码打开.
        output.write(data.getBytes("utf-8"));
    }
　　//方法2:
    //模拟meta标签,设置charset为utf-8,这个方法也行.    //用html技术中的meta标签模拟了一个http响应头,来控制浏览器的行为
    public void test2(HttpServletResponse response) throws Exception{
        String data  = "中国_第二个";
        OutputStream output= response.getOutputStream();
        output.write("<meta http-equiv='content-type' content='text/html;charset=UTF-8'>".getBytes());
        output.write(data.getBytes());
    }

public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doGet(req, resp); } }

//********************************情况2:*************************************

public class ResponseDemo2 extends HttpServlet {
	private static final long serialVersionUID = 1L;

	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		test1(response);

	}

	public void test1(HttpServletResponse response) throws IOException {
		// 方法１:
		// 要设置response,所使用的码表,以控制reponse以什么码表向浏览器写入数据
		// response.setCharacterEncoding("utf-8");
		// 同时设置浏览器以何种码表打开,指定浏览以什么　码表打开服务器发送的数据　
		// response.setHeader("content-type", "text/html;charset=utf-8");
		// 　方法２:
		response.setContentType("text/html;charset=utf-8");

		String data = "中国";
		PrintWriter outputStream = response.getWriter();
		outputStream.write(data);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doGet(request, response);

	}

}