📄 test.java
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package cn.meadlai.test;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class Test extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = 1L;
/**
* Constructor of the object.
*/
public Test() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request
* the request send by the client to the server
* @param response
* the response send by the server to the client
* @throws ServletException
* if an error occurred
* @throws IOException
* if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
Cookie ck = new Cookie("mead", "lai");
ck.setComment("this.cookie.is.set.by.mead");
ck.setDomain("localhost*");
ck.setMaxAge(999999);
ck.setPath("/");
response.addCookie(ck);
// print out cookies
Cookie[] cookies = request.getCookies();
if (cookies != null) {
out.println("cookies number is ：" + cookies.length);
out.println("<br/>");
for (int i = 0; i < cookies.length; i++) {
Cookie c = cookies[i];
String name = c.getName();
String value = c.getValue();
out.println(name + " = " + value);
}
}
java.util.UUID.randomUUID().toString();// ///////////////
out.print("<br/> This is ");
out.print(this.getClass());
out.println(", using the GET method");
out.println("<a href='" + response.encodeURL("index.jsp") + "'>"
+ response.encodeURL("index.jsp") + "</a>");
// Session
out.println("<br>");
String getRequestURI = request.getRequestURI();
out.println("getRequestURI"+getRequestURI);out.println("<br>");
String getQueryString = request.getQueryString();
out.println("getQueryString"+getQueryString);out.println("<br>");
int getServerPort = request.getServerPort();
out.println("getServerPort"+getServerPort);out.println("<br>");
int getLocalPort = request.getLocalPort();
out.println("getLocalPort"+getLocalPort);out.println("<br>");
String getRequestURL = request.getRequestURL().toString();
out.println("getRequestURL"+getRequestURL);out.println("<br>");
String getServletPath = request.getServletPath();
out.println("getServletPath"+getServletPath);out.println("<br>");
String getServerName = request.getServerName();
out.println("getServerName"+getServerName);out.println("<br>");
String getContextPath = request.getContextPath();
out.println("getContextPath"+getContextPath);out.println("<br>");
String getLocalName = request.getLocalName();
out.println("getLocalName"+getLocalName);out.println("<br>");
String getLocalAddr = request.getLocalAddr();
out.println("getLocalAddr"+getLocalAddr);out.println("<br>");
String getScheme = request.getScheme();
out.println("getScheme"+getScheme);out.println("<br>");
HttpSession session = request.getSession(true);
session.setAttribute("mead", "lai");
String id = session.getId();
out.println("session id is :" + id);
Enumeration<?> e = session.getAttributeNames();
while (e.hasMoreElements()) {
String name = (String) e.nextElement();
String value = session.getAttribute(name).toString();
out.println(name + " = " + value);
}
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to
* post.
*
* @param request
* the request send by the client to the server
* @param response
* the response send by the server to the client
* @throws ServletException
* if an error occurred
* @throws IOException
* if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.print(" This is ");
out.print(this.getClass());
out.println(", using the POST method");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException
* if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
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