{"id":61987,"date":"2024-10-13T15:19:15","date_gmt":"2024-10-13T07:19:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61987\/"},"modified":"2024-10-13T15:19:16","modified_gmt":"2024-10-13T07:19:16","slug":"java%e5%a6%82%e4%bd%95%e7%8d%b2%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e8%ab%8b%e6%b1%82%e9%a1%9e%e5%9e%8b%ef%bc%9f-java%e7%8d%b2%e5%8f%96%e8%ab%8b%e6%b1%82%e7%9a%84%e9%a1%9e%e5%9e%8b%e7%9a%84","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61987\/","title":{"rendered":"Java\u5982\u4f55\u7372\u53d6\u6578\u64da\u5eab\u7684\u8acb\u6c42\u985e\u578b\uff1f (java\u7372\u53d6\u8acb\u6c42\u7684\u985e\u578b\u7684\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"java%e5%a6%82%e4%bd%95%e7%8d%b2%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e8%ab%8b%e6%b1%82%e9%a1%9e%e5%9e%8b%ef%bc%9f-dDVFnlsvfQ\">Java\u5982\u4f55\u7372\u53d6\u6578\u64da\u5eab\u7684\u8acb\u6c42\u985e\u578b\uff1f<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0cJava\u4f5c\u70ba\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u7d93\u5e38\u88ab\u7528\u65bc\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u7121\u8ad6\u662fWeb\u61c9\u7528\u7a0b\u5e8f\u9084\u662f\u4f01\u696d\u7d1a\u61c9\u7528\uff0c\u958b\u767c\u8005\u90fd\u9700\u8981\u6709\u6548\u5730\u7372\u53d6\u548c\u8655\u7406\u6578\u64da\u5eab\u7684\u8acb\u6c42\u985e\u578b\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Java\u4e2d\u7372\u53d6\u6578\u64da\u5eab\u7684\u8acb\u6c42\u985e\u578b\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%ab%8b%e6%b1%82%e9%a1%9e%e5%9e%8b%e7%9a%84%e6%a6%82%e8%bf%b0-dDVFnlsvfQ\">\u6578\u64da\u5eab\u8acb\u6c42\u985e\u578b\u7684\u6982\u8ff0<\/h2>\n<p>\u6578\u64da\u5eab\u8acb\u6c42\u985e\u578b\u901a\u5e38\u5305\u62ec\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<ul>\n<li><strong>\u67e5\u8a62\u8acb\u6c42\uff08SELECT\uff09<\/strong>\uff1a\u7528\u65bc\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u6578\u64da\u3002<\/li>\n<li><strong>\u63d2\u5165\u8acb\u6c42\uff08INSERT\uff09<\/strong>\uff1a\u7528\u65bc\u5411\u6578\u64da\u5eab\u4e2d\u6dfb\u52a0\u65b0\u6578\u64da\u3002<\/li>\n<li><strong>\u66f4\u65b0\u8acb\u6c42\uff08UPDATE\uff09<\/strong>\uff1a\u7528\u65bc\u4fee\u6539\u6578\u64da\u5eab\u4e2d\u5df2\u5b58\u5728\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u522a\u9664\u8acb\u6c42\uff08DELETE\uff09<\/strong>\uff1a\u7528\u65bc\u5f9e\u6578\u64da\u5eab\u4e2d\u522a\u9664\u6578\u64da\u3002<\/li>\n<\/ul>\n<p>\u4e86\u89e3\u9019\u4e9b\u8acb\u6c42\u985e\u578b\u5c0d\u65bc\u958b\u767c\u8005\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\uff0c\u56e0\u70ba\u5b83\u5011\u5f71\u97ff\u5230\u6578\u64da\u7684\u8655\u7406\u65b9\u5f0f\u548c\u6027\u80fd\u512a\u5316\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8java%e7%8d%b2%e5%8f%96%e8%ab%8b%e6%b1%82%e9%a1%9e%e5%9e%8b-dDVFnlsvfQ\">\u4f7f\u7528Java\u7372\u53d6\u8acb\u6c42\u985e\u578b<\/h2>\n<p>\u5728Java\u4e2d\uff0c\u7372\u53d6\u6578\u64da\u5eab\u8acb\u6c42\u985e\u578b\u7684\u904e\u7a0b\u901a\u5e38\u6d89\u53ca\u5230JDBC\uff08Java Database Connectivity\uff09API\u3002\u4ee5\u4e0b\u662f\u7372\u53d6\u8acb\u6c42\u985e\u578b\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab-dDVFnlsvfQ\">1. \u9023\u63a5\u6578\u64da\u5eab<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u4ee3\u78bc\u5be6\u73fe\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\n\npublic class DatabaseConnection {\n    public static Connection connect() {\n        Connection connection = null;\n        try {\n            String url = \"jdbc:mysql:\/\/localhost:3306\/your_database\";\n            String user = \"your_username\";\n            String password = \"your_password\";\n            connection = DriverManager.getConnection(url, user, password);\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n        return connection;\n    }\n}\n<\/code><\/pre>\n<h3 id=\"2-%e5%9f%b7%e8%a1%8c%e8%ab%8b%e6%b1%82%e4%b8%a6%e7%8d%b2%e5%8f%96%e8%ab%8b%e6%b1%82%e9%a1%9e%e5%9e%8b-dDVFnlsvfQ\">2. \u57f7\u884c\u8acb\u6c42\u4e26\u7372\u53d6\u8acb\u6c42\u985e\u578b<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u60a8\u53ef\u4ee5\u57f7\u884cSQL\u8acb\u6c42\u4e26\u6839\u64da\u8acb\u6c42\u7684\u985e\u578b\u9032\u884c\u8655\u7406\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.PreparedStatement;\nimport java.sql.ResultSet;\nimport java.sql.SQLException;\n\npublic class RequestTypeExample {\n    public static void main(String[] args) {\n        Connection connection = DatabaseConnection.connect();\n        String sql = \"SELECT * FROM your_table\"; \/\/ \u9019\u88e1\u53ef\u4ee5\u66ff\u63db\u70ba\u5176\u4ed6\u8acb\u6c42\u985e\u578b\n        try {\n            PreparedStatement preparedStatement = connection.prepareStatement(sql);\n            boolean isResultSet = preparedStatement.execute();\n            \n            if (isResultSet) {\n                ResultSet resultSet = preparedStatement.getResultSet();\n                \/\/ \u8655\u7406\u67e5\u8a62\u7d50\u679c\n            } else {\n                int updateCount = preparedStatement.getUpdateCount();\n                \/\/ \u8655\u7406\u66f4\u65b0\u6216\u522a\u9664\u8acb\u6c42\n            }\n        } catch (SQLException e) {\n            e.printStackTrace();\n        } finally {\n            try {\n                if (connection != null) {\n                    connection.close();\n                }\n            } catch (SQLException e) {\n                e.printStackTrace();\n            }\n        }\n    }\n}\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-dDVFnlsvfQ\">\u7e3d\u7d50<\/h2>\n<p>\u5728Java\u4e2d\u7372\u53d6\u6578\u64da\u5eab\u7684\u8acb\u6c42\u985e\u578b\u662f\u4e00\u500b\u91cd\u8981\u7684\u6280\u80fd\uff0c\u9019\u4e0d\u50c5\u6709\u52a9\u65bc\u958b\u767c\u8005\u7406\u89e3\u6578\u64da\u7684\u6d41\u52d5\uff0c\u9084\u80fd\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u3002\u901a\u904e\u4f7f\u7528JDBC API\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u9023\u63a5\u6578\u64da\u5eab\u4e26\u57f7\u884c\u5404\u7a2e\u8acb\u6c42\u3002\u7121\u8ad6\u662f\u67e5\u8a62\u3001\u63d2\u5165\u3001\u66f4\u65b0\u9084\u662f\u522a\u9664\uff0c\u638c\u63e1\u9019\u4e9b\u57fa\u672c\u64cd\u4f5c\u5c07\u4f7f\u60a8\u5728\u958b\u767c\u904e\u7a0b\u4e2d\u66f4\u52a0\u5f97\u5fc3\u61c9\u624b\u3002<\/p>\n<p>\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\u7684Java\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK\u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u6578\u64da\u5eab\u548c\u61c9\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728Java\u4e2d\u7372\u53d6\u6578\u64da\u5eab\u8acb\u6c42\u985e\u578b\uff0c\u638c\u63e1\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u57fa\u672c\u6280\u5de7\u8207\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-61987","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61987","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=61987"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61987\/revisions"}],"predecessor-version":[{"id":61988,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61987\/revisions\/61988"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61987"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61987"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61987"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}