{"id":62129,"date":"2024-10-13T16:26:15","date_gmt":"2024-10-13T08:26:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62129\/"},"modified":"2024-10-13T16:26:15","modified_gmt":"2024-10-13T08:26:15","slug":"java%e9%87%8d%e9%80%a3%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%8c%e8%bc%95%e9%ac%86%e8%a7%a3%e6%b1%ba%e9%80%a3%e6%8e%a5%e5%a4%b1%e6%95%97%e5%95%8f%e9%a1%8c-java%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62129\/","title":{"rendered":"Java\u91cd\u9023\u6578\u64da\u5eab\uff0c\u8f15\u9b06\u89e3\u6c7a\u9023\u63a5\u5931\u6557\u554f\u984c (java\u9023\u63a5\u6578\u64da\u5eab\u5931\u6557\u91cd\u65b0\u9023\u63a5)"},"content":{"rendered":"<h1 id=\"java%e9%87%8d%e9%80%a3%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%8c%e8%bc%95%e9%ac%86%e8%a7%a3%e6%b1%ba%e9%80%a3%e6%8e%a5%e5%a4%b1%e6%95%97%e5%95%8f%e9%a1%8c-wPQoWGZexZ\">Java\u91cd\u9023\u6578\u64da\u5eab\uff0c\u8f15\u9b06\u89e3\u6c7a\u9023\u63a5\u5931\u6557\u554f\u984c<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5e8f\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u9023\u63a5\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7136\u800c\uff0c\u7121\u8ad6\u662f\u7531\u65bc\u7db2\u7d61\u554f\u984c\u3001\u6578\u64da\u5eab\u670d\u52d9\u5668\u7684\u91cd\u555f\uff0c\u9084\u662f\u5176\u4ed6\u539f\u56e0\uff0cJava\u61c9\u7528\u7a0b\u5e8f\u5728\u9023\u63a5\u6578\u64da\u5eab\u6642\u53ef\u80fd\u6703\u9047\u5230\u5931\u6557\u7684\u60c5\u6cc1\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Java\u4e2d\u5be6\u73fe\u6578\u64da\u5eab\u7684\u91cd\u9023\u6a5f\u5236\uff0c\u4ee5\u4fbf\u8f15\u9b06\u89e3\u6c7a\u9023\u63a5\u5931\u6557\u7684\u554f\u984c\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e6%9c%83%e7%99%bc%e7%94%9f%e9%80%a3%e6%8e%a5%e5%a4%b1%e6%95%97%ef%bc%9f-wPQoWGZexZ\">\u70ba\u4ec0\u9ebc\u6703\u767c\u751f\u9023\u63a5\u5931\u6557\uff1f<\/h2>\n<p>\u6578\u64da\u5eab\u9023\u63a5\u5931\u6557\u7684\u539f\u56e0\u6709\u5f88\u591a\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li>\u6578\u64da\u5eab\u670d\u52d9\u5668\u5b95\u6a5f\u6216\u91cd\u555f\u3002<\/li>\n<li>\u7db2\u7d61\u9023\u63a5\u4e0d\u7a69\u5b9a\u6216\u4e2d\u65b7\u3002<\/li>\n<li>\u6578\u64da\u5eab\u914d\u7f6e\u932f\u8aa4\uff0c\u4f8b\u5982\u7528\u6236\u540d\u6216\u5bc6\u78bc\u4e0d\u6b63\u78ba\u3002<\/li>\n<li>\u6578\u64da\u5eab\u9023\u63a5\u6c60\u7684\u6700\u5927\u9023\u63a5\u6578\u5df2\u9054\u5230\u4e0a\u9650\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e9%87%8d%e9%80%a3%e6%a9%9f%e5%88%b6-wPQoWGZexZ\">\u5982\u4f55\u5be6\u73fe\u91cd\u9023\u6a5f\u5236<\/h2>\n<p>\u5728Java\u4e2d\uff0c\u53ef\u4ee5\u901a\u904e\u6355\u7372\u7570\u5e38\u4f86\u5be6\u73fe\u6578\u64da\u5eab\u7684\u91cd\u9023\u6a5f\u5236\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5728\u9023\u63a5\u5931\u6557\u6642\u81ea\u52d5\u91cd\u8a66\u3002<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\n\npublic class DatabaseConnector {\n    private static final String URL = \"jdbc:mysql:\/\/localhost:3306\/yourdatabase\";\n    private static final String USER = \"yourusername\";\n    private static final String PASSWORD = \"yourpassword\";\n    private static final int MAX_RETRIES = 5;\n\n    public static Connection connect() {\n        Connection connection = null;\n        int attempts = 0;\n\n        while (attempts = MAX_RETRIES) {\n                    System.err.println(\"\u9054\u5230\u6700\u5927\u91cd\u8a66\u6b21\u6578\uff0c\u7121\u6cd5\u9023\u63a5\u5230\u6578\u64da\u5eab\u3002\");\n                    e.printStackTrace();\n                }\n                try {\n                    Thread.sleep(2000); \/\/ \u7b49\u5f852\u79d2\u5f8c\u91cd\u8a66\n                } catch (InterruptedException ie) {\n                    Thread.currentThread().interrupt();\n                }\n            }\n        }\n        return connection;\n    }\n}\n<\/code><\/pre>\n<h2 id=\"%e4%bb%a3%e7%a2%bc%e8%a7%a3%e6%9e%90-wPQoWGZexZ\">\u4ee3\u78bc\u89e3\u6790<\/h2>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70ba <code>DatabaseConnector<\/code> \u7684\u985e\uff0c\u4e26\u5728\u5176\u4e2d\u5be6\u73fe\u4e86 <code>connect<\/code> \u65b9\u6cd5\u3002\u9019\u500b\u65b9\u6cd5\u6703\u5617\u8a66\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u4e26\u5728\u9023\u63a5\u5931\u6557\u6642\u9032\u884c\u91cd\u8a66\u3002<\/p>\n<ul>\n<li><code>MAX_RETRIES<\/code>\uff1a\u5b9a\u7fa9\u6700\u5927\u91cd\u8a66\u6b21\u6578\u3002<\/li>\n<li><code>DriverManager.getConnection<\/code>\uff1a\u7528\u65bc\u7372\u53d6\u6578\u64da\u5eab\u9023\u63a5\u3002<\/li>\n<li><code>Thread.sleep<\/code>\uff1a\u5728\u6bcf\u6b21\u91cd\u8a66\u4e4b\u9593\u7b49\u5f85\u4e00\u6bb5\u6642\u9593\uff0c\u4ee5\u907f\u514d\u904e\u65bc\u983b\u7e41\u7684\u9023\u63a5\u8acb\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-wPQoWGZexZ\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u5728\u5be6\u73fe\u6578\u64da\u5eab\u91cd\u9023\u6a5f\u5236\u6642\uff0c\u9084\u6709\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u9023\u63a5\u6c60\uff1a\u9023\u63a5\u6c60\u53ef\u4ee5\u6709\u6548\u7ba1\u7406\u6578\u64da\u5eab\u9023\u63a5\uff0c\u6e1b\u5c11\u9023\u63a5\u5efa\u7acb\u7684\u958b\u92b7\u3002<\/li>\n<li>\u8a18\u9304\u932f\u8aa4\uff1a\u5728\u9023\u63a5\u5931\u6557\u6642\uff0c\u8a18\u9304\u8a73\u7d30\u7684\u932f\u8aa4\u4fe1\u606f\uff0c\u4ee5\u4fbf\u5f8c\u7e8c\u6392\u67e5\u554f\u984c\u3002<\/li>\n<li>\u8a2d\u7f6e\u5408\u7406\u7684\u91cd\u8a66\u9593\u9694\uff1a\u907f\u514d\u904e\u65bc\u983b\u7e41\u7684\u91cd\u8a66\uff0c\u5c0e\u81f4\u670d\u52d9\u5668\u8ca0\u64d4\u904e\u91cd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-wPQoWGZexZ\">\u7e3d\u7d50<\/h2>\n<p>\u5728Java\u61c9\u7528\u7a0b\u5e8f\u4e2d\uff0c\u5be6\u73fe\u6578\u64da\u5eab\u7684\u91cd\u9023\u6a5f\u5236\u662f\u89e3\u6c7a\u9023\u63a5\u5931\u6557\u554f\u984c\u7684\u4e00\u7a2e\u6709\u6548\u65b9\u6cd5\u3002\u901a\u904e\u5408\u7406\u7684\u4ee3\u78bc\u8a2d\u8a08\u548c\u6700\u4f73\u5be6\u8e10\uff0c\u53ef\u4ee5\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728Java\u4e2d\u8f15\u9b06\u91cd\u9023\u6578\u64da\u5eab\uff0c\u89e3\u6c7a\u9023\u63a5\u5931\u6557\u554f\u984c\uff0c\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u7a69\u5b9a\u904b\u884c\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-62129","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62129","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=62129"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62129\/revisions"}],"predecessor-version":[{"id":62130,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62129\/revisions\/62130"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62129"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62129"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}