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ServletµÄ»á»°¹ÜÀí¼¼ÊõÖ÷ÒªÓÐ4ÖÖ£ºURLÖØÐ´£¬Cookie£¬Òþ²Ø±íµ¥ÓòÒÔ¼°HttpSession¡£ÏÂÃæµÄÀý×Óͨ¹ýÒ»¸ö¶¯Ì¬ÑéÖ¤ÂëµÄʵÀýÏêϸ˵Ã÷ÁËÕâ4ÖÖ¼¼ÊõµÄ¾ßÌåÓ¦Ó÷½Ê½¡£ÎªÁ˼òµ¥Æð¼û£¬¶¯Ì¬ÑéÖ¤ÂëûÓвÉÓÃͼƬÉú³É¼¼Êõ£¬ÆäÔ­ÀíºÍЧ¹ûÓë±¾ÀýÖÐÏàͬ¡£

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    //**************************************   index.jsp´úÂ룺
    <%@ page contentType="text/html;charset=gb2312" %>
    <html>
      <head>
        <title>Servlet»á»°¹ÜÀíʵÀý</title>
      </head>

 

      <body>
        <h2>Servlet»á»°¹ÜÀíʵÀý</h2><hr>
        ±¾ÊµÀýͨ¹ýʵÏÖÓû§µÇ¼¹ý³ÌÖеĶ¯Ì¬ÑéÖ¤ÂëУÑ鹦ÄÜ£¬ËµÃ÷4ÖÖSession¹ÜÀí·½·¨µÄÌØµã¡£<br>

        <ul>
        <li><a href="UrlRedirect">URLÖØÐ´·½·¨</a></li>
        <li><a href="HiddenField">Òþ²Ø±íµ¥Óò·½·¨</a></li>
        <li><a href="Cookie">Cookie·½·¨</a></li>
        <li><a href="HttpSessionManagement">HttpSession·½·¨</a></li>
        </ul>
      </body>
    </html>

    //**************************************   web.xmlÄÚÈÝ£º
    <?xml version="1.0" encoding="UTF-8"?>
    <web-app >
      <servlet>
        <servlet-name>UrlRedirect</servlet-name>
        <servlet-class>UrlRedirect</servlet-class>
      </servlet>
      <servlet>
        <servlet-name>Login</servlet-name>
        <servlet-class>LoginWithUrlRedirect</servlet-class>
      </servlet>
      <servlet>
        <servlet-name>HiddenField</servlet-name>
        <servlet-class>HiddenField</servlet-class>
      </servlet>
      <servlet>
        <servlet-name>Cookie</servlet-name>
        <servlet-class>CookieManagement</servlet-class>
      </servlet>
      <servlet>
        <servlet-name>LoginWithCookie</servlet-name>
        <servlet-class>LoginWithCookie</servlet-class>
      </servlet>
      <servlet>
        <servlet-name>HttpSessionManagement</servlet-name>
        <servlet-class>HttpSessionManagement</servlet-class>
      </servlet>
      <servlet>
        <servlet-name>LoginWithSession</servlet-name>
        <servlet-class>LoginWithSession</servlet-class>
      </servlet>
      <servlet-mapping>
        <servlet-name>UrlRedirect</servlet-name>
        <url-pattern>/UrlRedirect</url-pattern>
      </servlet-mapping>
      <servlet-mapping>
        <servlet-name>Login</servlet-name>
        <url-pattern>/Login</url-pattern>
      </servlet-mapping>
      <servlet-mapping>
        <servlet-name>HiddenField</servlet-name>
        <url-pattern>/HiddenField</url-pattern>
      </servlet-mapping>
      <servlet-mapping>
        <servlet-name>Cookie</servlet-name>

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