{"id":61973,"date":"2024-10-13T15:12:17","date_gmt":"2024-10-13T07:12:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61973\/"},"modified":"2024-10-13T15:12:17","modified_gmt":"2024-10-13T07:12:17","slug":"java%e8%bc%95%e9%ac%86%e5%85%a5%e9%96%80%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e7%99%bb%e9%8c%84%e6%93%8d%e4%bd%9c%e6%ad%a5%e9%a9%9f%e8%a9%b3%e8%a7%a3-java%e4%b8%ad%e9%80%a3%e5%85%a5%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61973\/","title":{"rendered":"Java\u8f15\u9b06\u5165\u9580\uff1a\u6578\u64da\u5eab\u767b\u9304\u64cd\u4f5c\u6b65\u9a5f\u8a73\u89e3 (java\u4e2d\u9023\u5165\u6578\u64da\u5eab\u767b\u9304)"},"content":{"rendered":"<h1 id=\"java%e8%bc%95%e9%ac%86%e5%85%a5%e9%96%80%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e7%99%bb%e9%8c%84%e6%93%8d%e4%bd%9c%e6%ad%a5%e9%a9%9f%e8%a9%b3%e8%a7%a3-taRKfoZrmM\">Java\u8f15\u9b06\u5165\u9580\uff1a\u6578\u64da\u5eab\u767b\u9304\u64cd\u4f5c\u6b65\u9a5f\u8a73\u89e3<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u5df2\u6210\u70ba\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002Java\u4f5c\u70ba\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u5f0f\u4f86\u9023\u63a5\u548c\u64cd\u4f5c\u6578\u64da\u5eab\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u5728Java\u4e2d\u5be6\u73fe\u6578\u64da\u5eab\u767b\u9304\u64cd\u4f5c\uff0c\u5e6b\u52a9\u521d\u5b78\u8005\u8f15\u9b06\u5165\u9580\u3002<\/p>\n<h2 id=\"1-%e7%92%b0%e5%a2%83%e6%ba%96%e5%82%99-taRKfoZrmM\">1. \u74b0\u5883\u6e96\u5099<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u5df2\u7d93\u5b89\u88dd\u4e86\u4ee5\u4e0b\u74b0\u5883\uff1a<\/p>\n<ul>\n<li>Java Development Kit (JDK)<\/li>\n<li>\u4e00\u500b\u652f\u6301\u7684\u6578\u64da\u5eab\uff08\u5982MySQL\u3001PostgreSQL\u7b49\uff09<\/li>\n<li>\u76f8\u61c9\u7684\u6578\u64da\u5eab\u9a45\u52d5\u7a0b\u5e8f\uff08\u5982MySQL Connector\/J\uff09<\/li>\n<\/ul>\n<h2 id=\"2-%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e7%bd%ae-taRKfoZrmM\">2. \u6578\u64da\u5eab\u8a2d\u7f6e<\/h2>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u5728\u6578\u64da\u5eab\u4e2d\u5275\u5efa\u4e00\u500b\u7528\u6236\u548c\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u4ee5MySQL\u70ba\u4f8b\u7684\u64cd\u4f5c\u6b65\u9a5f\uff1a<\/p>\n<pre><code>CREATE DATABASE testdb;\nCREATE USER 'testuser'@'localhost' IDENTIFIED BY 'password';\nGRANT ALL PRIVILEGES ON testdb.* TO 'testuser'@'localhost';\nFLUSH PRIVILEGES;<\/code><\/pre>\n<h2 id=\"3-java%e4%bb%a3%e7%a2%bc%e7%a4%ba%e4%be%8b-taRKfoZrmM\">3. Java\u4ee3\u78bc\u793a\u4f8b<\/h2>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u5c07\u7de8\u5bebJava\u4ee3\u78bc\u4f86\u9023\u63a5\u6578\u64da\u5eab\u4e26\u57f7\u884c\u767b\u9304\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u5b8c\u6574\u7684\u4ee3\u78bc\u793a\u4f8b\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.PreparedStatement;\nimport java.sql.ResultSet;\n\npublic class DatabaseLogin {\n    private static final String URL = \"jdbc:mysql:\/\/localhost:3306\/testdb\";\n    private static final String USER = \"testuser\";\n    private static final String PASSWORD = \"password\";\n\n    public static void main(String[] args) {\n        try {\n            \/\/ \u52a0\u8f09JDBC\u9a45\u52d5\n            Class.forName(\"com.mysql.cj.jdbc.Driver\");\n            \/\/ \u5efa\u7acb\u9023\u63a5\n            Connection connection = DriverManager.getConnection(URL, USER, PASSWORD);\n            System.out.println(\"\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff01\");\n\n            \/\/ \u767b\u9304\u64cd\u4f5c\n            String sql = \"SELECT * FROM users WHERE username = ? AND password = ?\";\n            PreparedStatement preparedStatement = connection.prepareStatement(sql);\n            preparedStatement.setString(1, \"yourUsername\");\n            preparedStatement.setString(2, \"yourPassword\");\n            ResultSet resultSet = preparedStatement.executeQuery();\n\n            if (resultSet.next()) {\n                System.out.println(\"\u767b\u9304\u6210\u529f\uff01\");\n            } else {\n                System.out.println(\"\u767b\u9304\u5931\u6557\uff0c\u8acb\u6aa2\u67e5\u7528\u6236\u540d\u548c\u5bc6\u78bc\u3002\");\n            }\n\n            \/\/ \u95dc\u9589\u9023\u63a5\n            resultSet.close();\n            preparedStatement.close();\n            connection.close();\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n}<\/code><\/pre>\n<h2 id=\"4-%e4%bb%a3%e7%a2%bc%e8%a7%a3%e6%9e%90-taRKfoZrmM\">4. \u4ee3\u78bc\u89e3\u6790<\/h2>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u52a0\u8f09\u4e86MySQL\u7684JDBC\u9a45\u52d5\uff0c\u7136\u5f8c\u4f7f\u7528DriverManager\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002\u63a5\u8457\uff0c\u6211\u5011\u4f7f\u7528PreparedStatement\u4f86\u57f7\u884cSQL\u67e5\u8a62\uff0c\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u9632\u6b62SQL\u6ce8\u5165\u653b\u64ca\u3002\u6700\u5f8c\uff0c\u6211\u5011\u6839\u64da\u67e5\u8a62\u7d50\u679c\u5224\u65b7\u767b\u9304\u662f\u5426\u6210\u529f\u3002<\/p>\n<h2 id=\"5-%e5%b8%b8%e8%a6%8b%e5%95%8f%e9%a1%8c-taRKfoZrmM\">5. \u5e38\u898b\u554f\u984c<\/h2>\n<ul>\n<li><strong>\u5982\u4f55\u8655\u7406\u6578\u64da\u5eab\u9023\u63a5\u7570\u5e38\uff1f<\/strong><br \/>\u53ef\u4ee5\u4f7f\u7528try-catch\u8a9e\u53e5\u4f86\u6355\u7372SQLException\uff0c\u4e26\u6839\u64da\u7570\u5e38\u4fe1\u606f\u9032\u884c\u76f8\u61c9\u7684\u8655\u7406\u3002<\/li>\n<li><strong>\u5982\u4f55\u5b89\u5168\u5730\u5b58\u5132\u7528\u6236\u5bc6\u78bc\uff1f<\/strong><br \/>\u5efa\u8b70\u4f7f\u7528\u54c8\u5e0c\u7b97\u6cd5\uff08\u5982BCrypt\uff09\u4f86\u5b58\u5132\u5bc6\u78bc\uff0c\u800c\u4e0d\u662f\u660e\u6587\u5b58\u5132\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-taRKfoZrmM\">\u7e3d\u7d50<\/h2>\n<p>\u672c\u6587\u4ecb\u7d39\u4e86\u5982\u4f55\u5728Java\u4e2d\u5be6\u73fe\u6578\u64da\u5eab\u767b\u9304\u64cd\u4f5c\u7684\u57fa\u672c\u6b65\u9a5f\uff0c\u5305\u62ec\u74b0\u5883\u6e96\u5099\u3001\u6578\u64da\u5eab\u8a2d\u7f6e\u3001\u4ee3\u78bc\u793a\u4f8b\u53ca\u5176\u89e3\u6790\u3002\u638c\u63e1\u9019\u4e9b\u57fa\u672c\u77e5\u8b58\u5f8c\uff0c\u60a8\u53ef\u4ee5\u9032\u4e00\u6b65\u63a2\u7d22\u66f4\u8907\u96dc\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u548c\u61c9\u7528\u3002<\/p>\n<p>\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u90e8\u7f72\u60a8\u7684Java\u61c9\u7528\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2Java\u8f15\u9b06\u5165\u9580\uff0c\u638c\u63e1\u6578\u64da\u5eab\u767b\u9304\u64cd\u4f5c\u7684\u8a73\u7d30\u6b65\u9a5f\uff0c\u5feb\u901f\u5be6\u73fe\u6578\u64da\u5eab\u9023\u63a5\u8207\u64cd\u4f5c\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-61973","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61973","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=61973"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61973\/revisions"}],"predecessor-version":[{"id":61974,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61973\/revisions\/61974"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61973"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61973"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61973"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}