在web應用的src包下新建servlet，同時設定該servlet的url
servlet檔案中的程式碼如下

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class responseAboutHttp
 */
public class responseAboutHttp extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public responseAboutHttp() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		// 1.通過setStatus設定響應行
		response.setStatus(200);
		// 2.通過setHeader設定響應頭
		response.setHeader("name", "malihua");
		// 3.通過addHeader新增響應頭
		response.addHeader("name", "yangbaoyu");
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

}

 

在tomcat中執行此web應用抓包可得：

由此設定了響應行以及設定和添加了響應頭，設定響應行的狀態嗎為200，設定響應頭的key為name，value為malihua另外還添加了key的value