{"id":62015,"date":"2024-10-13T15:31:16","date_gmt":"2024-10-13T07:31:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62015\/"},"modified":"2024-10-13T15:31:16","modified_gmt":"2024-10-13T07:31:16","slug":"java%e5%af%a6%e7%8f%be%e7%99%bb%e9%8c%84%e7%b3%bb%e7%b5%b1%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e6%96%b9%e5%bc%8f%e7%b0%a1%e4%bb%8b-java%e7%99%bb%e9%8c%84%e7%95%8c%e9%9d%a2%e5%a6%82","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62015\/","title":{"rendered":"Java\u5be6\u73fe\u767b\u9304\u7cfb\u7d71\uff1a\u6578\u64da\u5eab\u9023\u63a5\u65b9\u5f0f\u7c21\u4ecb (java\u767b\u9304\u754c\u9762\u5982\u4f55\u9023\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"java%e5%af%a6%e7%8f%be%e7%99%bb%e9%8c%84%e7%b3%bb%e7%b5%b1%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e6%96%b9%e5%bc%8f%e7%b0%a1%e4%bb%8b-tZkCtTvQtL\">Java\u5be6\u73fe\u767b\u9304\u7cfb\u7d71\uff1a\u6578\u64da\u5eab\u9023\u63a5\u65b9\u5f0f\u7c21\u4ecb<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0c\u767b\u9304\u7cfb\u7d71\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u7121\u8ad6\u662f\u7db2\u7ad9\u9084\u662f\u79fb\u52d5\u61c9\u7528\uff0c\u767b\u9304\u7cfb\u7d71\u90fd\u80fd\u5920\u78ba\u4fdd\u7528\u6236\u7684\u5b89\u5168\u6027\u548c\u6578\u64da\u7684\u4fdd\u8b77\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528Java\u5be6\u73fe\u4e00\u500b\u7c21\u55ae\u7684\u767b\u9304\u7cfb\u7d71\uff0c\u4e26\u63a2\u8a0e\u6578\u64da\u5eab\u7684\u9023\u63a5\u65b9\u5f0f\u3002<\/p>\n<h2 id=\"1-%e7%99%bb%e9%8c%84%e7%b3%bb%e7%b5%b1%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%9e%b6%e6%a7%8b-tZkCtTvQtL\">1. \u767b\u9304\u7cfb\u7d71\u7684\u57fa\u672c\u67b6\u69cb<\/h2>\n<p>\u4e00\u500b\u5178\u578b\u7684\u767b\u9304\u7cfb\u7d71\u901a\u5e38\u5305\u62ec\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\uff1a<\/p>\n<ul>\n<li>\u7528\u6236\u754c\u9762\uff1a\u7528\u6236\u8f38\u5165\u7528\u6236\u540d\u548c\u5bc6\u78bc\u7684\u5730\u65b9\u3002<\/li>\n<li>\u5f8c\u7aef\u908f\u8f2f\uff1a\u8655\u7406\u7528\u6236\u7684\u767b\u9304\u8acb\u6c42\uff0c\u9a57\u8b49\u7528\u6236\u7684\u8eab\u4efd\u3002<\/li>\n<li>\u6578\u64da\u5eab\uff1a\u5b58\u5132\u7528\u6236\u7684\u8cec\u865f\u4fe1\u606f\u548c\u5bc6\u78bc\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e9%81%b8%e6%93%87-tZkCtTvQtL\">2. \u6578\u64da\u5eab\u7684\u9078\u64c7<\/h2>\n<p>\u5728Java\u4e2d\uff0c\u5e38\u7528\u7684\u6578\u64da\u5eab\u6709MySQL\u3001PostgreSQL\u548cSQLite\u7b49\u3002\u9019\u4e9b\u6578\u64da\u5eab\u90fd\u652f\u6301JDBC\uff08Java Database Connectivity\uff09\uff0c\u4f7f\u5f97Java\u61c9\u7528\u80fd\u5920\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002<\/p>\n<h3 id=\"2-1-mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e8%a8%ad%e7%bd%ae-tZkCtTvQtL\">2.1 MySQL\u6578\u64da\u5eab\u7684\u8a2d\u7f6e<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u5b89\u88ddMySQL\u6578\u64da\u5eab\u4e26\u5275\u5efa\u4e00\u500b\u7528\u6236\u8868\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u7528\u6236\u8868\u7684SQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>CREATE TABLE users (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    username VARCHAR(50) NOT NULL,\n    password VARCHAR(255) NOT NULL\n);<\/code><\/pre>\n<h2 id=\"3-java%e4%b8%ad%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab-tZkCtTvQtL\">3. Java\u4e2d\u9023\u63a5\u6578\u64da\u5eab<\/h2>\n<p>\u5728Java\u4e2d\uff0c\u9023\u63a5\u6578\u64da\u5eab\u7684\u904e\u7a0b\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li>\u52a0\u8f09JDBC\u9a45\u52d5\u7a0b\u5e8f\u3002<\/li>\n<li>\u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5\u3002<\/li>\n<li>\u57f7\u884cSQL\u67e5\u8a62\u3002<\/li>\n<li>\u8655\u7406\u7d50\u679c\u96c6\u3002<\/li>\n<li>\u95dc\u9589\u9023\u63a5\u3002<\/li>\n<\/ul>\n<h3 id=\"3-1-%e5%8a%a0%e8%bc%89jdbc%e9%a9%85%e5%8b%95%e7%a8%8b%e5%ba%8f-tZkCtTvQtL\">3.1 \u52a0\u8f09JDBC\u9a45\u52d5\u7a0b\u5e8f<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u5728\u9805\u76ee\u4e2d\u6dfb\u52a0MySQL\u7684JDBC\u9a45\u52d5\u7a0b\u5e8f\u3002\u53ef\u4ee5\u901a\u904eMaven\u6216\u76f4\u63a5\u4e0b\u8f09JAR\u6587\u4ef6\u4f86\u5b8c\u6210\u3002<\/p>\n<pre><code>Class.forName(\"com.mysql.cj.jdbc.Driver\");<\/code><\/pre>\n<h3 id=\"3-2-%e5%bb%ba%e7%ab%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-tZkCtTvQtL\">3.2 \u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5\uff1a<\/p>\n<pre><code>String url = \"jdbc:mysql:\/\/localhost:3306\/your_database\";\nString user = \"your_username\";\nString password = \"your_password\";\n\nConnection connection = DriverManager.getConnection(url, user, password);<\/code><\/pre>\n<h3 id=\"3-3-%e5%9f%b7%e8%a1%8csql%e6%9f%a5%e8%a9%a2-tZkCtTvQtL\">3.3 \u57f7\u884cSQL\u67e5\u8a62<\/h3>\n<p>\u5728\u9023\u63a5\u6210\u529f\u5f8c\uff0c\u53ef\u4ee5\u57f7\u884cSQL\u67e5\u8a62\u4f86\u9a57\u8b49\u7528\u6236\u7684\u767b\u9304\u4fe1\u606f\uff1a<\/p>\n<pre><code>String sql = \"SELECT * FROM users WHERE username = ? AND password = ?\";\nPreparedStatement preparedStatement = connection.prepareStatement(sql);\npreparedStatement.setString(1, inputUsername);\npreparedStatement.setString(2, inputPassword);\nResultSet resultSet = preparedStatement.executeQuery();<\/code><\/pre>\n<h3 id=\"3-4-%e8%99%95%e7%90%86%e7%b5%90%e6%9e%9c%e9%9b%86-tZkCtTvQtL\">3.4 \u8655\u7406\u7d50\u679c\u96c6<\/h3>\n<p>\u6839\u64da\u67e5\u8a62\u7d50\u679c\u4f86\u5224\u65b7\u7528\u6236\u662f\u5426\u767b\u9304\u6210\u529f\uff1a<\/p>\n<pre><code>if (resultSet.next()) {\n    System.out.println(\"\u767b\u9304\u6210\u529f\uff01\");\n} else {\n    System.out.println(\"\u7528\u6236\u540d\u6216\u5bc6\u78bc\u932f\u8aa4\uff01\");\n}<\/code><\/pre>\n<h3 id=\"3-5-%e9%97%9c%e9%96%89%e9%80%a3%e6%8e%a5-tZkCtTvQtL\">3.5 \u95dc\u9589\u9023\u63a5<\/h3>\n<p>\u6700\u5f8c\uff0c\u8a18\u5f97\u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5\uff1a<\/p>\n<pre><code>resultSet.close();\npreparedStatement.close();\nconnection.close();<\/code><\/pre>\n<h2 id=\"4-%e5%ae%89%e5%85%a8%e6%80%a7%e8%80%83%e9%87%8f-tZkCtTvQtL\">4. \u5b89\u5168\u6027\u8003\u91cf<\/h2>\n<p>\u5728\u5be6\u73fe\u767b\u9304\u7cfb\u7d71\u6642\uff0c\u5b89\u5168\u6027\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u54c8\u5e0c\u7b97\u6cd5\u5b58\u5132\u5bc6\u78bc\uff0c\u4f8b\u5982BCrypt\u3002<\/li>\n<li>\u4f7f\u7528SSL\u52a0\u5bc6\u6578\u64da\u50b3\u8f38\u3002<\/li>\n<li>\u9632\u6b62SQL\u6ce8\u5165\u653b\u64ca\uff0c\u4f7f\u7528PreparedStatement\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-tZkCtTvQtL\">\u7e3d\u7d50<\/h2>\n<p>\u672c\u6587\u4ecb\u7d39\u4e86\u5982\u4f55\u4f7f\u7528Java\u5be6\u73fe\u4e00\u500b\u7c21\u55ae\u7684\u767b\u9304\u7cfb\u7d71\uff0c\u4e26\u8a73\u7d30\u8aaa\u660e\u4e86\u6578\u64da\u5eab\u7684\u9023\u63a5\u65b9\u5f0f\u3002\u901a\u904e\u6b63\u78ba\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u548c\u5b89\u5168\u63aa\u65bd\uff0c\u60a8\u53ef\u4ee5\u69cb\u5efa\u4e00\u500b\u5b89\u5168\u53ef\u9760\u7684\u767b\u9304\u7cfb\u7d71\u3002\u5982\u679c\u60a8\u9700\u8981\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u90e8\u7f72\u60a8\u7684\u61c9\u7528\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684\u670d\u52d9\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u9700\u6c42\uff0c\u6211\u5011\u90fd\u80fd\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4f7f\u7528Java\u5be6\u73fe\u767b\u9304\u7cfb\u7d71\uff0c\u63a2\u7d22\u6578\u64da\u5eab\u9023\u63a5\u65b9\u5f0f\u53ca\u767b\u9304\u754c\u9762\u7684\u8a2d\u8a08\u8207\u5be6\u73fe\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-62015","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62015","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=62015"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62015\/revisions"}],"predecessor-version":[{"id":62016,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62015\/revisions\/62016"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62015"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62015"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62015"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}