import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; @WebServlet("/HighLight") public class HighLight extends HttpServlet { @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html; charset=UTF-8"); PrintWriter out = response.getWriter(); out.println("

");
		// 適当な Javaのソースファイル（例えば HighLight.javaのコピー）を
		// WEBアプリのルートフォルダに Tekito.txtという名前で置いておくこと
		File f = new File(getServletContext().getRealPath("/Tekito.txt"));
		String word = request.getQueryString();
		InputStreamReader fr = new InputStreamReader
				(new FileInputStream(f), "UTF-8");
		BufferedReader in = new BufferedReader(fr);

		while(true) {
			String line = in.readLine();
			if (line == null) break;
			line = line.replace("&", "&");
			line = line.replace("<", "<");
			line = line.replace(">", ">");

			if (word != null && word.length() != 0) {
				line = line.replace(word, "" + word + "");
			}
			out.println(line);
		}
		out.println("

"); out.close(); in.close(); } }