실습
http://localhost:8080/firstweb/header
package name : examples
class name : HeaderServlet
url mapping : /header
Servlet 생성
서블릿 파일을 요청할 때 지정할 서블릿 이름을 header
으로 하기 위해 수정
HeaderServlet.java 생성
package examples;
import java.io.IOException;
//(생략)
@WebServlet("/header")
public class HeaderServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public HeaderServlet() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.getWriter().append("Served at: ").append(request.getContextPath());
}
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html"); //응답 보낼 컨텐츠 타입 설정
PrintWriter out = response.getWriter(); //클라이언트와의 연결 객체 생성
//응답으로 보낼 html 태그
out.println("<html>");
out.println("<head><title>form</title></head>");
out.println("<body>");
// getHeaderNames() : 모든 헤더의 이름을 Enumeration 문자열 객체로 반환
Enumeration<String> headerNames = request.getHeaderNames();
while(headerNames.hasMoreElements()) {
String headerName = headerNames.nextElement();
String headerValue = request.getHeader(headerName);
out.println(headerName + " : " + headerValue + " <br> ");
}
out.println("</body>");
out.println("</html>");
}
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
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