{"id":62047,"date":"2024-10-13T15:44:15","date_gmt":"2024-10-13T07:44:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62047\/"},"modified":"2024-10-13T15:44:15","modified_gmt":"2024-10-13T07:44:15","slug":"java%e4%bd%bf%e7%94%a8cookie%e5%b0%87%e6%95%b8%e6%93%9a%e4%bf%9d%e5%ad%98%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad-java-cookie%e4%bf%9d%e5%ad%98%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62047\/","title":{"rendered":"Java\u4f7f\u7528Cookie\u5c07\u6578\u64da\u4fdd\u5b58\u5230\u6578\u64da\u5eab\u4e2d (java cookie\u4fdd\u5b58\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"java%e4%bd%bf%e7%94%a8cookie%e5%b0%87%e6%95%b8%e6%93%9a%e4%bf%9d%e5%ad%98%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad-ZZJTxYTAGv\">Java\u4f7f\u7528Cookie\u5c07\u6578\u64da\u4fdd\u5b58\u5230\u6578\u64da\u5eab\u4e2d<\/h1>\n<p>\u5728\u73fe\u4ee3\u7684Web\u61c9\u7528\u7a0b\u5e8f\u4e2d\uff0cCookie\u662f\u4e00\u7a2e\u5e38\u7528\u7684\u6280\u8853\uff0c\u7528\u65bc\u5728\u7528\u6236\u7684\u700f\u89bd\u5668\u4e2d\u5b58\u5132\u5c0f\u91cf\u7684\u6578\u64da\u3002\u9019\u4e9b\u6578\u64da\u53ef\u4ee5\u7528\u4f86\u8ddf\u8e2a\u7528\u6236\u7684\u6703\u8a71\u3001\u4fdd\u5b58\u7528\u6236\u504f\u597d\u8a2d\u7f6e\uff0c\u751a\u81f3\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u5c07\u6578\u64da\u4fdd\u5b58\u5230\u6578\u64da\u5eab\u4e2d\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Java\u4e2d\u4f7f\u7528Cookie\u4f86\u4fdd\u5b58\u6578\u64da\u5230\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afcookie%ef%bc%9f-ZZJTxYTAGv\">\u4ec0\u9ebc\u662fCookie\uff1f<\/h2>\n<p>Cookie\u662f\u4e00\u7a2e\u7531Web\u670d\u52d9\u5668\u5275\u5efa\u7684\u5c0f\u578b\u6587\u672c\u6587\u4ef6\uff0c\u5b58\u5132\u5728\u7528\u6236\u7684\u8a08\u7b97\u6a5f\u4e0a\u3002\u5b83\u5011\u901a\u5e38\u7528\u65bc\u8a18\u9304\u7528\u6236\u7684\u8a2a\u554f\u4fe1\u606f\uff0c\u4f8b\u5982\u767b\u9304\u72c0\u614b\u3001\u8cfc\u7269\u8eca\u5167\u5bb9\u7b49\u3002Cookie\u7684\u4e3b\u8981\u7279\u9ede\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u5c0f\u578b\uff1a\u6bcf\u500bCookie\u7684\u5927\u5c0f\u901a\u5e38\u4e0d\u8d85\u904e4KB\u3002<\/li>\n<li>\u6301\u4e45\u6027\uff1a\u53ef\u4ee5\u8a2d\u7f6e\u904e\u671f\u6642\u9593\uff0c\u6c7a\u5b9aCookie\u7684\u6709\u6548\u671f\u3002<\/li>\n<li>\u57df\u540d\u9650\u5236\uff1aCookie\u53ea\u80fd\u5728\u5275\u5efa\u5b83\u7684\u57df\u540d\u4e0b\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8java%e5%89%b5%e5%bb%ba%e5%92%8c%e8%ae%80%e5%8f%96cookie-ZZJTxYTAGv\">\u4f7f\u7528Java\u5275\u5efa\u548c\u8b80\u53d6Cookie<\/h2>\n<p>\u5728Java\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528Servlet API\u4f86\u5275\u5efa\u548c\u8b80\u53d6Cookie\u3002\u4ee5\u4e0b\u662f\u5275\u5efaCookie\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<pre><code>\nimport javax.servlet.http.Cookie;\nimport javax.servlet.http.HttpServletRequest;\nimport javax.servlet.http.HttpServletResponse;\n\n\/\/ \u5275\u5efaCookie\nCookie cookie = new Cookie(\"username\", \"user123\");\ncookie.setMaxAge(60*60*24); \/\/ \u8a2d\u7f6eCookie\u7684\u6709\u6548\u671f\u70ba1\u5929\nresponse.addCookie(cookie);\n<\/code><\/pre>\n<p>\u8981\u8b80\u53d6Cookie\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>\nCookie[] cookies = request.getCookies();\nif (cookies != null) {\n    for (Cookie c : cookies) {\n        if (c.getName().equals(\"username\")) {\n            String username = c.getValue();\n            \/\/ \u4f7f\u7528username\u9032\u884c\u5f8c\u7e8c\u64cd\u4f5c\n        }\n    }\n}\n<\/code><\/pre>\n<h2 id=\"%e5%b0%87cookie%e6%95%b8%e6%93%9a%e4%bf%9d%e5%ad%98%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab-ZZJTxYTAGv\">\u5c07Cookie\u6578\u64da\u4fdd\u5b58\u5230\u6578\u64da\u5eab<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u6211\u5011\u53ef\u80fd\u5e0c\u671b\u5c07Cookie\u4e2d\u7684\u6578\u64da\u4fdd\u5b58\u5230\u6578\u64da\u5eab\u4e2d\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u6b65\u9a5f\u5be6\u73fe\uff1a<\/p>\n<ol>\n<li>\u5f9eCookie\u4e2d\u8b80\u53d6\u6578\u64da\u3002<\/li>\n<li>\u4f7f\u7528JDBC\u9023\u63a5\u5230\u6578\u64da\u5eab\u3002<\/li>\n<li>\u57f7\u884cSQL\u8a9e\u53e5\u5c07\u6578\u64da\u63d2\u5165\u5230\u6578\u64da\u5eab\u4e2d\u3002<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5c07Cookie\u4e2d\u7684\u7528\u6236\u540d\u4fdd\u5b58\u5230MySQL\u6578\u64da\u5eab\uff1a<\/p>\n<pre><code>\nimport java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.PreparedStatement;\n\n\/\/ \u5047\u8a2d\u5df2\u7d93\u5f9eCookie\u4e2d\u7372\u53d6\u4e86\u7528\u6236\u540d\nString username = \"user123\";\n\n\/\/ JDBC\u9023\u63a5\nString url = \"jdbc:mysql:\/\/localhost:3306\/mydatabase\";\nString user = \"root\";\nString password = \"password\";\n\ntry {\n    Connection conn = DriverManager.getConnection(url, user, password);\n    String sql = \"INSERT INTO users (username) VALUES (?)\";\n    PreparedStatement pstmt = conn.prepareStatement(sql);\n    pstmt.setString(1, username);\n    pstmt.executeUpdate();\n    pstmt.close();\n    conn.close();\n} catch (Exception e) {\n    e.printStackTrace();\n}\n<\/code><\/pre>\n<h2 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id=\"%e7%b8%bd%e7%b5%90-ZZJTxYTAGv\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528Java\u4e2d\u7684Cookie\u4f86\u4fdd\u5b58\u6578\u64da\u5230\u6578\u64da\u5eab\u662f\u4e00\u500b\u6709\u6548\u7684\u6280\u8853\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u7ba1\u7406\u7528\u6236\u6578\u64da\u3002\u901a\u904e\u6b63\u78ba\u7684\u5be6\u73fe\u65b9\u5f0f\uff0c\u6211\u5011\u53ef\u4ee5\u5728\u4e0d\u5f71\u97ff\u7528\u6236\u9ad4\u9a57\u7684\u60c5\u6cc1\u4e0b\uff0c\u5c07\u91cd\u8981\u7684\u6578\u64da\u6301\u4e45\u5316\u5230\u6578\u64da\u5eab\u4e2d\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u5b58\u5132\u548c\u7ba1\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u61c9\u7528\u7684\u7a69\u5b9a\u6027\u548c\u5b89\u5168\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728Java\u4e2d\u4f7f\u7528Cookie\u5c07\u6578\u64da\u4fdd\u5b58\u5230\u6578\u64da\u5eab\uff0c\u5be6\u73fe\u6578\u64da\u6301\u4e45\u5316\u548c\u7528\u6236\u6703\u8a71\u7ba1\u7406\u7684\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-62047","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62047","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=62047"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62047\/revisions"}],"predecessor-version":[{"id":62048,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62047\/revisions\/62048"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62047"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62047"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62047"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}