HttpServletResponse: setContentType( text/html; charset=UTF-8 );

import java.io.BufferedReader;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class UTF8 extends HttpServlet {

  public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException,
      IOException {
    try {
      BufferedReader reader = req.getReader();

      res.setContentType("text/html; charset=UTF-8");
      PrintWriter out = new PrintWriter(new OutputStreamWriter(res.getOutputStream(), "UTF8"), true);

      // Read and write 4K chars at a time
      // (Far more efficient than reading and writing a line at a time)
      char[] buf = new char[4 * 1024]; // 4Kchar buffer
      int len;
      while ((len = reader.read(buf, 0, buf.length)) != -1) {
        out.write(buf, 0, len);
      }
      out.flush();
    } catch (Exception e) {
      getServletContext().log(e, "Problem filtering page to UTF-8");
    }
  }
}

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HttpServletResponse: setContentType( text/html; charset=UTF-8 ); : HttpServletResponse « javax.servlet.http « Java by API

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