servlet亂碼 解決方法 2種方法

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 = "中國";

        OutputStream output = resp.getOutputStream();

        //程式以什麼編碼輸出,那麼一定要設定瀏覽為相對應的編碼開啟.

        output.write(data.getBytes("utf-8"));

    }

　　//方法2:

    //模擬meta標籤,設定charset為utf-8,這個方法也行.    //用html技術中的meta標籤模擬了一個http響應頭,來控制瀏覽器的行為

    public void test2(HttpServletResponse response) throws Exception{

        String data  = "中國_第二個";

        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); } }

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:

		// 要設定response,所使用的碼錶,以控制reponse以什麼碼錶向瀏覽器寫入資料

		// response.setCharacterEncoding("utf-8");

		// 同時設定瀏覽器以何種碼錶開啟,指定瀏覽以什麼　碼錶開啟伺服器傳送的資料　

		// response.setHeader("content-type", "text/html;charset=utf-8");

		// 　方法２:

		response.setContentType("text/html;charset=utf-8");

		String data = "中國";

		PrintWriter outputStream = response.getWriter();

		outputStream.write(data);

	}

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

		doGet(request, response);

	}

}