{"id":583,"date":"2015-05-07T09:22:32","date_gmt":"2015-05-07T01:22:32","guid":{"rendered":"http:\/\/www.dongchangbin.net.cn\/?p=583"},"modified":"2015-05-07T09:22:32","modified_gmt":"2015-05-07T01:22:32","slug":"javaweb-session","status":"publish","type":"post","link":"https:\/\/www.dongchangbin.net.cn\/?p=583","title":{"rendered":"Javaweb-session"},"content":{"rendered":"<h2 id=\"blogTitle0\">\u4e00\u3001Session\u7b80\u5355\u4ecb\u7ecd<\/h2>\n<p>\u5728WEB\u5f00\u53d1\u4e2d\uff0c\u670d\u52a1\u5668\u53ef\u4ee5\u4e3a\u6bcf\u4e2a\u7528\u6237\u6d4f\u89c8\u5668\u521b\u5efa\u4e00\u4e2a\u4f1a\u8bdd\u5bf9\u8c61\uff08session\u5bf9\u8c61\uff09\uff0c\u6ce8\u610f\uff1a\u4e00\u4e2a\u6d4f\u89c8\u5668\u72ec\u5360\u4e00\u4e2asession\u5bf9\u8c61(\u9ed8\u8ba4\u60c5\u51b5\u4e0b)\u3002\u56e0\u6b64\uff0c\u5728\u9700\u8981\u4fdd\u5b58\u7528\u6237\u6570\u636e\u65f6\uff0c\u670d\u52a1\u5668\u7a0b\u5e8f\u53ef\u4ee5\u628a\u7528\u6237\u6570\u636e\u5199\u5230\u7528\u6237\u6d4f\u89c8\u5668\u72ec\u5360\u7684session\u4e2d\uff0c\u5f53\u7528\u6237\u4f7f\u7528\u6d4f\u89c8\u5668\u8bbf\u95ee\u5176\u5b83\u7a0b\u5e8f\u65f6\uff0c\u5176\u5b83\u7a0b\u5e8f\u53ef\u4ee5\u4ece\u7528\u6237\u7684session\u4e2d\u53d6\u51fa\u8be5\u7528\u6237\u7684\u6570\u636e\uff0c\u4e3a\u7528\u6237\u670d\u52a1\u3002<\/p>\n<h2 id=\"blogTitle1\">\u4e8c\u3001Session\u548cCookie\u7684\u4e3b\u8981\u533a\u522b<\/h2>\n<ul>\n<li>Cookie\u662f\u628a\u7528\u6237\u7684\u6570\u636e\u5199\u7ed9\u7528\u6237\u7684\u6d4f\u89c8\u5668\u3002<\/li>\n<li>Session\u6280\u672f\u628a\u7528\u6237\u7684\u6570\u636e\u5199\u5230\u7528\u6237\u72ec\u5360\u7684session\u4e2d\u3002<\/li>\n<li>Session\u5bf9\u8c61\u7531\u670d\u52a1\u5668\u521b\u5efa\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u8c03\u7528request\u5bf9\u8c61\u7684getSession\u65b9\u6cd5\u5f97\u5230session\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n<h2 id=\"blogTitle2\">\u4e09\u3001session\u5b9e\u73b0\u539f\u7406<\/h2>\n<h3 id=\"blogTitle3\">3.1\u3001\u670d\u52a1\u5668\u662f\u5982\u4f55\u5b9e\u73b0\u4e00\u4e2asession\u4e3a\u4e00\u4e2a\u7528\u6237\u6d4f\u89c8\u5668\u670d\u52a1\u7684\uff1f<\/h3>\n<p>\u670d\u52a1\u5668\u521b\u5efasession\u51fa\u6765\u540e\uff0c\u4f1a\u628asession\u7684id\u53f7\uff0c\u4ee5cookie\u7684\u5f62\u5f0f\u56de\u5199\u7ed9\u5ba2\u6237\u673a\uff0c\u8fd9\u6837\uff0c\u53ea\u8981\u5ba2\u6237\u673a\u7684\u6d4f\u89c8\u5668\u4e0d\u5173\uff0c\u518d\u53bb\u8bbf\u95ee\u670d\u52a1\u5668\u65f6\uff0c\u90fd\u4f1a\u5e26\u7740session\u7684id\u53f7\u53bb\uff0c\u670d\u52a1\u5668\u53d1\u73b0\u5ba2\u6237\u673a\u6d4f\u89c8\u5668\u5e26session id\u8fc7\u6765\u4e86\uff0c\u5c31\u4f1a\u4f7f\u7528\u5185\u5b58\u4e2d\u4e0e\u4e4b\u5bf9\u5e94\u7684session\u4e3a\u4e4b\u670d\u52a1\u3002\u53ef\u4ee5\u7528\u5982\u4e0b\u7684\u4ee3\u7801\u8bc1\u660e\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<pre> 1 package xdp.gacl.session;\r\n 2 \r\n 3 import java.io.IOException;\r\n 4 import javax.servlet.ServletException;\r\n 5 import javax.servlet.http.HttpServlet;\r\n 6 import javax.servlet.http.HttpServletRequest;\r\n 7 import javax.servlet.http.HttpServletResponse;\r\n 8 import javax.servlet.http.HttpSession;\r\n 9 \r\n10 public class SessionDemo1 extends HttpServlet {\r\n11 \r\n12     public void doGet(HttpServletRequest request, HttpServletResponse response)\r\n13             throws ServletException, IOException {\r\n14 \r\n15         response.setCharacterEncoding(\"UTF=8\");\r\n16         response.setContentType(\"text\/html;charset=UTF-8\");\r\n17         \/\/\u4f7f\u7528request\u5bf9\u8c61\u7684getSession()\u83b7\u53d6session\uff0c\u5982\u679csession\u4e0d\u5b58\u5728\u5219\u521b\u5efa\u4e00\u4e2a\r\n18         HttpSession session = request.getSession();\r\n19         \/\/\u5c06\u6570\u636e\u5b58\u50a8\u5230session\u4e2d\r\n20         session.setAttribute(\"data\", \"\u5b64\u50b2\u82cd\u72fc\");\r\n21         \/\/\u83b7\u53d6session\u7684Id\r\n22         String sessionId = session.getId();\r\n23         \/\/\u5224\u65adsession\u662f\u4e0d\u662f\u65b0\u521b\u5efa\u7684\r\n24         if (session.isNew()) {\r\n25             response.getWriter().print(\"session\u521b\u5efa\u6210\u529f\uff0csession\u7684id\u662f\uff1a\"+sessionId);\r\n26         }else {\r\n27             response.getWriter().print(\"\u670d\u52a1\u5668\u5df2\u7ecf\u5b58\u5728\u8be5session\u4e86\uff0csession\u7684id\u662f\uff1a\"+sessionId);\r\n28         }\r\n29     }\r\n30 \r\n31     public void doPost(HttpServletRequest request, HttpServletResponse response)\r\n32             throws ServletException, IOException {\r\n33         doGet(request, response);\r\n34     }\r\n35 }<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<\/div>\n<p>\u7b2c\u4e00\u6b21\u8bbf\u95ee\u65f6\uff0c\u670d\u52a1\u5668\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684sesion\uff0c\u5e76\u4e14\u628asession\u7684Id\u4ee5cookie\u7684\u5f62\u5f0f\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u6d4f\u89c8\u5668\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<p>\u70b9\u51fb\u5237\u65b0\u6309\u94ae\uff0c\u518d\u6b21\u8bf7\u6c42\u670d\u52a1\u5668\uff0c\u6b64\u65f6\u5c31\u53ef\u4ee5\u770b\u5230\u6d4f\u89c8\u5668\u518d\u8bf7\u6c42\u670d\u52a1\u5668\u65f6\uff0c\u4f1a\u628a\u5b58\u50a8\u5230cookie\u4e2d\u7684session\u7684Id\u4e00\u8d77\u4f20\u9012\u5230\u670d\u52a1\u5668\u7aef\u4e86\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<p>\u6211<strong>\u731c\u60f3<\/strong>request.getSession()\u65b9\u6cd5\u5185\u90e8\u65b0\u521b\u5efa\u4e86Session\u4e4b\u540e\u4e00\u5b9a\u662f\u505a\u4e86\u5982\u4e0b\u7684\u5904\u7406<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<pre>1 \/\/\u83b7\u53d6session\u7684Id\r\n2 String sessionId = session.getId();\r\n3 \/\/\u5c06session\u7684Id\u5b58\u50a8\u5230\u540d\u5b57\u4e3aJSESSIONID\u7684cookie\u4e2d\r\n4 Cookie cookie = new Cookie(\"JSESSIONID\", sessionId);\r\n5 \/\/\u8bbe\u7f6ecookie\u7684\u6709\u6548\u8def\u5f84\r\n6 cookie.setPath(request.getContextPath());\r\n7 response.addCookie(cookie);<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<\/div>\n<h2 id=\"blogTitle4\">\u56db\u3001\u6d4f\u89c8\u5668\u7981\u7528Cookie\u540e\u7684session\u5904\u7406<\/h2>\n<h3 id=\"blogTitle5\">4.1\u3001IE8\u7981\u7528cookie<\/h3>\n<pre class=\"best-text mb-10\">\u3000\u3000\u5de5\u5177-&gt;internet\u9009\u9879-&gt;\u9690\u79c1-&gt;\u8bbe\u7f6e-&gt;\u5c06\u6ed1\u8f74\u62c9\u5230\u6700\u9876\u4e0a\uff08\u963b\u6b62\u6240\u6709cookies\uff09<\/pre>\n<h3 id=\"blogTitle6\">4.2\u3001\u89e3\u51b3\u65b9\u6848\uff1aURL\u91cd\u5199<\/h3>\n<p><strong>response.encodeRedirectURL(java.lang.String\u00a0url)<\/strong> \u7528\u4e8e\u5bf9sendRedirect\u65b9\u6cd5\u540e\u7684url\u5730\u5740\u8fdb\u884c\u91cd\u5199\u3002<br \/>\n<strong>response.encodeURL(java.lang.String\u00a0url)<\/strong>\u7528\u4e8e\u5bf9\u8868\u5355action\u548c\u8d85\u94fe\u63a5\u7684url\u5730\u5740\u8fdb\u884c\u91cd\u5199<\/p>\n<h3 id=\"blogTitle7\">4.3\u3001\u8303\u4f8b\uff1a\u7981\u7528Cookie\u540eservlet\u5171\u4eabSession\u4e2d\u7684\u6570\u636e<\/h3>\n<p><strong>IndexServlet<\/strong><\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<pre> 1 package xdp.gacl.session;\r\n 2 \r\n 3 import java.io.IOException;\r\n 4 import java.io.PrintWriter;\r\n 5 import java.util.LinkedHashMap;\r\n 6 import java.util.Map;\r\n 7 import java.util.Set;\r\n 8 import javax.servlet.ServletException;\r\n 9 import javax.servlet.http.HttpServlet;\r\n10 import javax.servlet.http.HttpServletRequest;\r\n11 import javax.servlet.http.HttpServletResponse;\r\n12 \r\n13 \/\/\u9996\u9875\uff1a\u5217\u51fa\u6240\u6709\u4e66\r\n14 public class IndexServlet extends HttpServlet {\r\n15 \r\n16     public void doGet(HttpServletRequest request, HttpServletResponse response)\r\n17             throws ServletException, IOException {\r\n18 \r\n19         response.setContentType(\"text\/html;charset=UTF-8\");\r\n20         PrintWriter out = response.getWriter();\r\n21         \/\/\u521b\u5efaSession\r\n22         request.getSession();\r\n23         out.write(\"\u672c\u7f51\u7ad9\u6709\u5982\u4e0b\u4e66\uff1a&lt;br\/&gt;\");\r\n24         Set&lt;Map.Entry&lt;String,Book&gt;&gt; set = DB.getAll().entrySet();\r\n25         for(Map.Entry&lt;String,Book&gt; me : set){\r\n26             Book book = me.getValue();\r\n27             String url =request.getContextPath()+ \"\/servlet\/BuyServlet?id=\" + book.getId();\r\n28             \/\/response. encodeURL(java.lang.String\u00a0url)\u7528\u4e8e\u5bf9\u8868\u5355action\u548c\u8d85\u94fe\u63a5\u7684url\u5730\u5740\u8fdb\u884c\u91cd\u5199\r\n29             url = response.encodeURL(url);\/\/\u5c06\u8d85\u94fe\u63a5\u7684url\u5730\u5740\u8fdb\u884c\u91cd\u5199\r\n30             out.println(book.getName()  + \"   &lt;a href='\"+url+\"'&gt;\u8d2d\u4e70&lt;\/a&gt;&lt;br\/&gt;\");\r\n31         }\r\n32     }\r\n33 \r\n34     public void doPost(HttpServletRequest request, HttpServletResponse response)\r\n35             throws ServletException, IOException {\r\n36         doGet(request, response);\r\n37     }\r\n38 }\r\n39 \r\n40 \r\n41 \/**\r\n42  * @author gacl\r\n43  * \u6a21\u62df\u6570\u636e\u5e93\r\n44  *\/\r\n45 class DB{\r\n46     private static Map&lt;String,Book&gt; map = new LinkedHashMap&lt;String,Book&gt;();\r\n47     static{\r\n48         map.put(\"1\", new Book(\"1\",\"javaweb\u5f00\u53d1\"));\r\n49         map.put(\"2\", new Book(\"2\",\"spring\u5f00\u53d1\"));\r\n50         map.put(\"3\", new Book(\"3\",\"hibernate\u5f00\u53d1\"));\r\n51         map.put(\"4\", new Book(\"4\",\"struts\u5f00\u53d1\"));\r\n52         map.put(\"5\", new Book(\"5\",\"ajax\u5f00\u53d1\"));\r\n53     }\r\n54     \r\n55     public static Map&lt;String,Book&gt; getAll(){\r\n56         return map;\r\n57     }\r\n58 }\r\n59 \r\n60 class Book{\r\n61     \r\n62     private String id;\r\n63     private String name;\r\n64 \r\n65     public Book() {\r\n66         super();\r\n67     }\r\n68     public Book(String id, String name) {\r\n69         super();\r\n70         this.id = id;\r\n71         this.name = name;\r\n72     }\r\n73     public String getId() {\r\n74         return id;\r\n75     }\r\n76     public void setId(String id) {\r\n77         this.id = id;\r\n78     }\r\n79     public String getName() {\r\n80         return name;\r\n81     }\r\n82     public void setName(String name) {\r\n83         this.name = name;\r\n84     }\r\n85 }<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<\/div>\n<p><strong>BuyServlet<\/strong><\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<pre> 1 package xdp.gacl.session;\r\n 2 \r\n 3 import java.io.IOException;\r\n 4 import java.util.ArrayList;\r\n 5 import java.util.List;\r\n 6 import javax.servlet.ServletException;\r\n 7 import javax.servlet.http.HttpServlet;\r\n 8 import javax.servlet.http.HttpServletRequest;\r\n 9 import javax.servlet.http.HttpServletResponse;\r\n10 import javax.servlet.http.HttpSession;\r\n11 \r\n12 public class BuyServlet extends HttpServlet {\r\n13 \r\n14     public void doGet(HttpServletRequest request, HttpServletResponse response)\r\n15             throws ServletException, IOException {\r\n16         String id = request.getParameter(\"id\");\r\n17         Book book = DB.getAll().get(id);  \/\/\u5f97\u5230\u7528\u6237\u60f3\u4e70\u7684\u4e66\r\n18         HttpSession session = request.getSession();\r\n19         List&lt;Book&gt; list = (List) session.getAttribute(\"list\");  \/\/\u5f97\u5230\u7528\u6237\u7528\u4e8e\u4fdd\u5b58\u6240\u6709\u4e66\u7684\u5bb9\u5668\r\n20         if(list==null){\r\n21             list = new ArrayList&lt;Book&gt;();\r\n22             session.setAttribute(\"list\", list);\r\n23         }\r\n24         list.add(book);\r\n25         \/\/response. encodeRedirectURL(java.lang.String\u00a0url)\u7528\u4e8e\u5bf9sendRedirect\u65b9\u6cd5\u540e\u7684url\u5730\u5740\u8fdb\u884c\u91cd\u5199\r\n26         String url = response.encodeRedirectURL(request.getContextPath()+\"\/servlet\/ListCartServlet\");\r\n27         System.out.println(url);\r\n28         response.sendRedirect(url);\r\n29     }\r\n30 \r\n31     public void doPost(HttpServletRequest request, HttpServletResponse response)\r\n32             throws ServletException, IOException {\r\n33         doGet(request, response);\r\n34     }\r\n35 \r\n36 }<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<\/div>\n<p><strong>ListCartServlet<\/strong><\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<pre> 1 package xdp.gacl.session;\r\n 2 \r\n 3 import java.io.IOException;\r\n 4 import java.io.PrintWriter;\r\n 5 import java.util.List;\r\n 6 import javax.servlet.ServletException;\r\n 7 import javax.servlet.http.HttpServlet;\r\n 8 import javax.servlet.http.HttpServletRequest;\r\n 9 import javax.servlet.http.HttpServletResponse;\r\n10 import javax.servlet.http.HttpSession;\r\n11 \r\n12 public class ListCartServlet extends HttpServlet {\r\n13 \r\n14     public void doGet(HttpServletRequest request, HttpServletResponse response)\r\n15             throws ServletException, IOException {\r\n16         response.setContentType(\"text\/html;charset=UTF-8\");\r\n17         PrintWriter out = response.getWriter();\r\n18         HttpSession session = request.getSession();\r\n19         List&lt;Book&gt; list = (List) session.getAttribute(\"list\");\r\n20         if(list==null || list.size()==0){\r\n21             out.write(\"\u5bf9\u4e0d\u8d77\uff0c\u60a8\u8fd8\u6ca1\u6709\u8d2d\u4e70\u4efb\u4f55\u5546\u54c1!!\");\r\n22             return;\r\n23         }\r\n24         \r\n25         \/\/\u663e\u793a\u7528\u6237\u4e70\u8fc7\u7684\u5546\u54c1\r\n26         out.write(\"\u60a8\u4e70\u8fc7\u5982\u4e0b\u5546\u54c1:&lt;br&gt;\");\r\n27         for(Book book : list){\r\n28             out.write(book.getName() + \"&lt;br\/&gt;\");\r\n29         }\r\n30     }\r\n31 \r\n32     public void doPost(HttpServletRequest request, HttpServletResponse response)\r\n33             throws ServletException, IOException {\r\n34         doGet(request, response);\r\n35     }\r\n36 }<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<\/div>\n<p>\u5728\u7981\u7528\u4e86cookie\u7684IE8\u4e0b\u7684\u8fd0\u884c\u6548\u679c\u5982\u4e0b\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" title=\"\u6f14\u793a\u6548\u679c\" src=\"http:\/\/images.cnitblog.com\/i\/289233\/201407\/201805504283464.gif\" alt=\"\u6f14\u793a\u6548\u679c\" width=\"950\" height=\"411\" \/><\/p>\n<p>\u901a\u8fc7\u67e5\u770bIndexServlet\u751f\u6210\u7684html\u4ee3\u7801\u53ef\u4ee5\u770b\u5230\uff0c\u6bcf\u4e00\u4e2a\u8d85\u94fe\u63a5\u540e\u9762\u90fd\u5e26\u4e0a\u4e86session\u7684Id\uff0c\u5982\u4e0b\u6240\u793a<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<pre>1 \u672c\u7f51\u7ad9\u6709\u5982\u4e0b\u4e66\uff1a&lt;br\/&gt;javaweb\u5f00\u53d1   &lt;a href='\/JavaWeb_Session_Study_20140720\/servlet\/BuyServlet;jsessionid=96BDFB9D87A08D5AB1EAA2537CDE2DB2?id=1'&gt;\u8d2d\u4e70&lt;\/a&gt;&lt;br\/&gt;\r\n2 spring\u5f00\u53d1   &lt;a href='\/JavaWeb_Session_Study_20140720\/servlet\/BuyServlet;jsessionid=96BDFB9D87A08D5AB1EAA2537CDE2DB2?id=2'&gt;\u8d2d\u4e70&lt;\/a&gt;&lt;br\/&gt;\r\n3 hibernate\u5f00\u53d1   &lt;a href='\/JavaWeb_Session_Study_20140720\/servlet\/BuyServlet;jsessionid=96BDFB9D87A08D5AB1EAA2537CDE2DB2?id=3'&gt;\u8d2d\u4e70&lt;\/a&gt;&lt;br\/&gt;\r\n4 struts\u5f00\u53d1   &lt;a href='\/JavaWeb_Session_Study_20140720\/servlet\/BuyServlet;jsessionid=96BDFB9D87A08D5AB1EAA2537CDE2DB2?id=4'&gt;\u8d2d\u4e70&lt;\/a&gt;&lt;br\/&gt;\r\n5 ajax\u5f00\u53d1   &lt;a href='\/JavaWeb_Session_Study_20140720\/servlet\/BuyServlet;jsessionid=96BDFB9D87A08D5AB1EAA2537CDE2DB2?id=5'&gt;\u8d2d\u4e70&lt;\/a&gt;&lt;br\/&gt;<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<\/div>\n<p>\u6240\u4ee5\uff0c\u5f53\u6d4f\u89c8\u5668\u7981\u7528\u4e86cookie\u540e\uff0c\u5c31\u53ef\u4ee5\u7528URL\u91cd\u5199\u8fd9\u79cd\u89e3\u51b3\u65b9\u6848\u89e3\u51b3Session\u6570\u636e\u5171\u4eab\u95ee\u9898\u3002\u800c\u4e14response. encodeRedirectURL(java.lang.String\u00a0url) \u548cresponse. encodeURL(java.lang.String\u00a0url)\u662f\u4e24\u4e2a\u975e\u5e38\u667a\u80fd\u7684\u65b9\u6cd5\uff0c\u5f53\u68c0\u6d4b\u5230\u6d4f\u89c8\u5668\u6ca1\u6709\u7981\u7528cookie\u65f6\uff0c\u90a3\u4e48\u5c31\u4e0d\u8fdb\u884cURL\u91cd\u5199\u4e86\u3002\u6211\u4eec\u5728\u6ca1\u6709\u7981\u7528cookie\u7684\u706b\u72d0\u6d4f\u89c8\u5668\u4e0b\u8bbf\u95ee\uff0c\u6548\u679c\u5982\u4e0b\uff1a<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/images.cnitblog.com\/i\/289233\/201407\/201833071467404.gif\" alt=\"\" \/><\/p>\n<p>\u4ece\u6f14\u793a\u52a8\u753b\u4e2d\u53ef\u4ee5\u770b\u5230\uff0c\u6d4f\u89c8\u5668\u7b2c\u4e00\u6b21\u8bbf\u95ee\u65f6\uff0c\u670d\u52a1\u5668\u521b\u5efaSession\uff0c\u7136\u540e\u5c06Session\u7684Id\u4ee5Cookie\u7684\u5f62\u5f0f\u53d1\u9001\u56de\u7ed9\u6d4f\u89c8\u5668\uff0cresponse. encodeURL(java.lang.String\u00a0url)\u65b9\u6cd5\u4e5f\u5c06URL\u8fdb\u884c\u4e86\u91cd\u5199\uff0c\u5f53\u70b9\u51fb\u5237\u65b0\u6309\u94ae\u7b2c\u4e8c\u6b21\u8bbf\u95ee\uff0c\u7531\u4e8e\u706b\u72d0\u6d4f\u89c8\u5668\u6ca1\u6709\u7981\u7528cookie\uff0c\u6240\u4ee5\u7b2c\u4e8c\u6b21\u8bbf\u95ee\u65f6\u5e26\u4e0a\u4e86cookie\uff0c\u6b64\u65f6\u670d\u52a1\u5668\u5c31\u53ef\u4ee5\u77e5\u9053\u5f53\u524d\u7684\u5ba2\u6237\u7aef\u6d4f\u89c8\u5668\u5e76\u6ca1\u6709\u7981\u7528cookie\uff0c\u90a3\u4e48\u5c31\u901a\u77e5response. encodeURL(java.lang.String\u00a0url)\u65b9\u6cd5\u4e0d\u7528\u5c06URL\u8fdb\u884c\u91cd\u5199\u4e86\u3002<\/p>\n<h2 id=\"blogTitle8\">\u4e94\u3001session\u5bf9\u8c61\u7684\u521b\u5efa\u548c\u9500\u6bc1\u65f6\u673a<\/h2>\n<h3 id=\"blogTitle9\">5.1\u3001session\u5bf9\u8c61\u7684\u521b\u5efa\u65f6\u673a<\/h3>\n<p>\u5728\u7a0b\u5e8f\u4e2d\u7b2c\u4e00\u6b21\u8c03\u7528request.getSession()\u65b9\u6cd5\u65f6\u5c31\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Session\uff0c\u53ef\u4ee5\u7528isNew()\u65b9\u6cd5\u6765\u5224\u65adSession\u662f\u4e0d\u662f\u65b0\u521b\u5efa\u7684<\/p>\n<p>\u8303\u4f8b\uff1a\u521b\u5efasession<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<pre> 1 \/\/\u4f7f\u7528request\u5bf9\u8c61\u7684getSession()\u83b7\u53d6session\uff0c\u5982\u679csession\u4e0d\u5b58\u5728\u5219\u521b\u5efa\u4e00\u4e2a\r\n 2 HttpSession session = request.getSession();\r\n 3 \/\/\u83b7\u53d6session\u7684Id\r\n 4 String sessionId = session.getId();\r\n 5 \/\/\u5224\u65adsession\u662f\u4e0d\u662f\u65b0\u521b\u5efa\u7684\r\n 6 if (session.isNew()) {\r\n 7     response.getWriter().print(\"session\u521b\u5efa\u6210\u529f\uff0csession\u7684id\u662f\uff1a\"+sessionId);\r\n 8 }else {\r\n 9     response.getWriter().print(\"\u670d\u52a1\u5668\u5df2\u7ecf\u5b58\u5728session\uff0csession\u7684id\u662f\uff1a\"+sessionId);\r\n10 }<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<\/div>\n<h3 id=\"blogTitle10\">5.2\u3001session\u5bf9\u8c61\u7684\u9500\u6bc1\u65f6\u673a<\/h3>\n<p>session\u5bf9\u8c61\u9ed8\u8ba430\u5206\u949f\u6ca1\u6709\u4f7f\u7528\uff0c\u5219\u670d\u52a1\u5668\u4f1a\u81ea\u52a8\u9500\u6bc1session\uff0c\u5728web.xml\u6587\u4ef6\u4e2d\u53ef\u4ee5\u624b\u5de5\u914d\u7f6esession\u7684\u5931\u6548\u65f6\u95f4\uff0c\u4f8b\u5982\uff1a<\/p>\n<div class=\"cnblogs_code\">\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<pre> 1 &lt;?xml version=\"1.0\" encoding=\"UTF-8\"?&gt;\r\n 2 &lt;web-app version=\"2.5\" \r\n 3     xmlns=\"http:\/\/java.sun.com\/xml\/ns\/javaee\" \r\n 4     xmlns:xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\" \r\n 5     xsi:schemaLocation=\"http:\/\/java.sun.com\/xml\/ns\/javaee \r\n 6     http:\/\/java.sun.com\/xml\/ns\/javaee\/web-app_2_5.xsd\"&gt;\r\n 7   &lt;display-name&gt;&lt;\/display-name&gt;\r\n 8   \r\n 9   &lt;welcome-file-list&gt;\r\n10     &lt;welcome-file&gt;index.jsp&lt;\/welcome-file&gt;\r\n11   &lt;\/welcome-file-list&gt;\r\n12 \r\n13   &lt;!-- \u8bbe\u7f6eSession\u7684\u6709\u6548\u65f6\u95f4:\u4ee5\u5206\u949f\u4e3a\u5355\u4f4d--&gt;\r\n<strong>14<\/strong>     <strong>&lt;session-config&gt;\r\n15         &lt;session-timeout&gt;15&lt;\/session-timeout&gt;\r\n16     &lt;\/session-config&gt;<\/strong>\r\n17 \r\n18 &lt;\/web-app&gt;<\/pre>\n<div class=\"cnblogs_code_toolbar\"><span class=\"cnblogs_code_copy\"><a title=\"\u590d\u5236\u4ee3\u7801\"><img decoding=\"async\" src=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\" \/><\/a><\/span><\/div>\n<\/div>\n<p>\u5f53\u9700\u8981\u5728\u7a0b\u5e8f\u4e2d\u624b\u52a8\u8bbe\u7f6eSession\u5931\u6548\u65f6\uff0c\u53ef\u4ee5\u624b\u5de5\u8c03\u7528<strong>session.invalidate<\/strong>\u65b9\u6cd5\uff0c\u6467\u6bc1session\u3002<\/p>\n<div class=\"cnblogs_code\">\n<pre>1 HttpSession session = request.getSession();\r\n2 \/\/\u624b\u5de5\u8c03\u7528session.invalidate\u65b9\u6cd5\uff0c\u6467\u6bc1session\r\n3 session.invalidate();\r\n\r\n\u4ee5\u4e0a\u8f6c\u81ea&lt;http:\/\/www.cnblogs.com\/xdp-gacl\/p\/3855702.html&gt;<\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001Session\u7b80\u5355\u4ecb\u7ecd \u5728WEB\u5f00\u53d1\u4e2d\uff0c\u670d\u52a1\u5668\u53ef\u4ee5\u4e3a\u6bcf\u4e2a\u7528\u6237\u6d4f\u89c8\u5668\u521b\u5efa\u4e00\u4e2a\u4f1a\u8bdd\u5bf9\u8c61\uff08session\u5bf9\u8c61\uff09\uff0c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"aside","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-583","post","type-post","status-publish","format-aside","hentry","category-uncategorized","post_format-post-format-aside"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Javaweb-session - Dong&#039;s Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.dongchangbin.net.cn\/?p=583\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Javaweb-session - Dong&#039;s Blog\" \/>\n<meta property=\"og:description\" content=\"\u4e00\u3001Session\u7b80\u5355\u4ecb\u7ecd \u5728WEB\u5f00\u53d1\u4e2d\uff0c\u670d\u52a1\u5668\u53ef\u4ee5\u4e3a\u6bcf\u4e2a\u7528\u6237\u6d4f\u89c8\u5668\u521b\u5efa\u4e00\u4e2a\u4f1a\u8bdd\u5bf9\u8c61\uff08session\u5bf9\u8c61\uff09\uff0c [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.dongchangbin.net.cn\/?p=583\" \/>\n<meta property=\"og:site_name\" content=\"Dong&#039;s Blog\" \/>\n<meta property=\"article:published_time\" content=\"2015-05-07T01:22:32+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/common.cnblogs.com\/images\/copycode.gif\" \/>\n<meta name=\"author\" content=\"Dong\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dong\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 \u5206\" \/>\n<script type=\"application\/ld+json\" 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