{"id":181644,"date":"2024-11-09T18:46:20","date_gmt":"2024-11-09T10:46:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/181644\/"},"modified":"2024-11-09T18:46:21","modified_gmt":"2024-11-09T10:46:21","slug":"%e6%b7%b1%e5%85%a5%e6%8e%a2%e7%a9%b6%ef%bc%9ajava%e4%b8%ad%e6%95%b8%e6%93%9a%e5%ba%ab%e9%a1%9e%e7%9a%84%e9%87%8d%e8%a6%81%e4%bd%9c%e7%94%a8%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e9%a1%9e%e7%9a%84","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/181644\/","title":{"rendered":"\u6df1\u5165\u63a2\u7a76\uff1aJava\u4e2d\u6578\u64da\u5eab\u985e\u7684\u91cd\u8981\u4f5c\u7528\uff08\u6578\u64da\u5eab\u985e\u7684\u4f5c\u7528java\uff09"},"content":{"rendered":"<h1 id=\"%e6%b7%b1%e5%85%a5%e6%8e%a2%e7%a9%b6%ef%bc%9ajava%e4%b8%ad%e6%95%b8%e6%93%9a%e5%ba%ab%e9%a1%9e%e7%9a%84%e9%87%8d%e8%a6%81%e4%bd%9c%e7%94%a8-qoJSYLHmrR\">\u6df1\u5165\u63a2\u7a76\uff1aJava\u4e2d\u6578\u64da\u5eab\u985e\u7684\u91cd\u8981\u4f5c\u7528<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u5df2\u7d93\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\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u5de5\u5177\u548c\u985e\u5225\uff0c\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u8f15\u9b06\u5730\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eJava\u4e2d\u6578\u64da\u5eab\u985e\u7684\u91cd\u8981\u4f5c\u7528\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%e9%a1%9e%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-qoJSYLHmrR\">\u6578\u64da\u5eab\u985e\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728Java\u4e2d\uff0c\u6578\u64da\u5eab\u985e\u4e3b\u8981\u662f\u6307\u7528\u65bc\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u7684\u985e\u5225\u3002\u9019\u4e9b\u985e\u5225\u901a\u5e38\u5305\u62ec\u9023\u63a5\u6578\u64da\u5eab\u3001\u57f7\u884c\u67e5\u8a62\u3001\u66f4\u65b0\u6578\u64da\u4ee5\u53ca\u8655\u7406\u7d50\u679c\u96c6\u7b49\u529f\u80fd\u3002Java Database Connectivity (JDBC) \u662fJava\u4e2d\u6700\u5e38\u7528\u7684\u6578\u64da\u5eab\u64cd\u4f5cAPI\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u7d44\u6a19\u6e96\u7684\u63a5\u53e3\uff0c\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u4ee5\u4e00\u81f4\u7684\u65b9\u5f0f\u8a2a\u554f\u4e0d\u540c\u985e\u578b\u7684\u6578\u64da\u5eab\u3002<\/p>\n<h2 id=\"jdbc%e7%9a%84%e6%a0%b8%e5%bf%83%e7%b5%84%e4%bb%b6-qoJSYLHmrR\">JDBC\u7684\u6838\u5fc3\u7d44\u4ef6<\/h2>\n<p>JDBC\u7684\u6838\u5fc3\u7d44\u4ef6\u5305\u62ec\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\uff1a<\/p>\n<ul>\n<li><strong>DriverManager\uff1a<\/strong>\u8ca0\u8cac\u7ba1\u7406\u6578\u64da\u5eab\u9a45\u52d5\u7a0b\u5e8f\uff0c\u4e26\u63d0\u4f9b\u9023\u63a5\u6578\u64da\u5eab\u7684\u529f\u80fd\u3002<\/li>\n<li><strong>Connection\uff1a<\/strong>\u8868\u793a\u8207\u7279\u5b9a\u6578\u64da\u5eab\u7684\u9023\u63a5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u901a\u904e\u9019\u500b\u5c0d\u8c61\u4f86\u57f7\u884cSQL\u8a9e\u53e5\u3002<\/li>\n<li><strong>Statement\uff1a<\/strong>\u7528\u65bc\u57f7\u884cSQL\u67e5\u8a62\u7684\u5c0d\u8c61\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528\u5b83\u4f86\u57f7\u884c\u975c\u614bSQL\u8a9e\u53e5\u3002<\/li>\n<li><strong>PreparedStatement\uff1a<\/strong>\u662fStatement\u7684\u5b50\u985e\uff0c\u652f\u6301\u9810\u7de8\u8b6f\u7684SQL\u8a9e\u53e5\uff0c\u80fd\u5920\u63d0\u9ad8\u6027\u80fd\u4e26\u9632\u6b62SQL\u6ce8\u5165\u3002<\/li>\n<li><strong>ResultSet\uff1a<\/strong>\u8868\u793a\u67e5\u8a62\u7d50\u679c\u7684\u5c0d\u8c61\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u901a\u904e\u5b83\u4f86\u904d\u6b77\u67e5\u8a62\u7d50\u679c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e9%a1%9e%e7%9a%84%e4%bd%9c%e7%94%a8-qoJSYLHmrR\">\u6578\u64da\u5eab\u985e\u7684\u4f5c\u7528<\/h2>\n<p>\u6578\u64da\u5eab\u985e\u5728Java\u4e2d\u7684\u4f5c\u7528\u4e3b\u8981\u9ad4\u73fe\u5728\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\uff1a<\/p>\n<h3 id=\"1-%e6%95%b8%e6%93%9a%e6%8c%81%e4%b9%85%e5%8c%96-qoJSYLHmrR\">1. \u6578\u64da\u6301\u4e45\u5316<\/h3>\n<p>\u6578\u64da\u5eab\u985e\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u5c07\u61c9\u7528\u7a0b\u5e8f\u4e2d\u7684\u6578\u64da\u6301\u4e45\u5316\u5230\u6578\u64da\u5eab\u4e2d\uff0c\u9019\u6a23\u5373\u4f7f\u61c9\u7528\u7a0b\u5e8f\u95dc\u9589\uff0c\u6578\u64da\u4e5f\u4e0d\u6703\u4e1f\u5931\u3002\u4f8b\u5982\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u5c07\u7528\u6236\u4fe1\u606f\u63d2\u5165\u5230\u6578\u64da\u5eab\u4e2d\uff1a<\/p>\n<pre><code>String sql = \"INSERT INTO users (name, email) VALUES (?, ?)\";\nPreparedStatement pstmt = connection.prepareStatement(sql);\npstmt.setString(1, \"John Doe\");\npstmt.setString(2, \"john@example.com\");\npstmt.executeUpdate();<\/code><\/pre>\n<h3 id=\"2-%e6%95%b8%e6%93%9a%e6%aa%a2%e7%b4%a2-qoJSYLHmrR\">2. \u6578\u64da\u6aa2\u7d22<\/h3>\n<p>\u901a\u904e\u6578\u64da\u5eab\u985e\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u6240\u9700\u7684\u6578\u64da\u3002\u4f7f\u7528ResultSet\u5c0d\u8c61\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u904d\u6b77\u67e5\u8a62\u7d50\u679c\u4e26\u63d0\u53d6\u6578\u64da\uff1a<\/p>\n<pre><code>String sql = \"SELECT * FROM users\";\nStatement stmt = connection.createStatement();\nResultSet rs = stmt.executeQuery(sql);\nwhile (rs.next()) {\n    String name = rs.getString(\"name\");\n    String email = rs.getString(\"email\");\n    System.out.println(\"Name: \" + name + \", Email: \" + email);\n}<\/code><\/pre>\n<h3 id=\"3-%e6%95%b8%e6%93%9a%e6%9b%b4%e6%96%b0%e5%92%8c%e5%88%aa%e9%99%a4-qoJSYLHmrR\">3. \u6578\u64da\u66f4\u65b0\u548c\u522a\u9664<\/h3>\n<p>\u6578\u64da\u5eab\u985e\u9084\u652f\u6301\u5c0d\u6578\u64da\u7684\u66f4\u65b0\u548c\u522a\u9664\u64cd\u4f5c\u3002\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528UPDATE\u548cDELETE\u8a9e\u53e5\u4f86\u4fee\u6539\u6216\u522a\u9664\u6578\u64da\uff1a<\/p>\n<pre><code>String updateSql = \"UPDATE users SET email = ? WHERE name = ?\";\nPreparedStatement updatePstmt = connection.prepareStatement(updateSql);\nupdatePstmt.setString(1, \"newemail@example.com\");\nupdatePstmt.setString(2, \"John Doe\");\nupdatePstmt.executeUpdate();\n\nString deleteSql = \"DELETE FROM users WHERE name = ?\";\nPreparedStatement deletePstmt = connection.prepareStatement(deleteSql);\ndeletePstmt.setString(1, \"John Doe\");\ndeletePstmt.executeUpdate();<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-qoJSYLHmrR\">\u7d50\u8ad6<\/h2>\n<p>\u7e3d\u7684\u4f86\u8aaa\uff0cJava\u4e2d\u7684\u6578\u64da\u5eab\u985e\u5728\u61c9\u7528\u7a0b\u5e8f\u958b\u767c\u4e2d\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002\u5b83\u5011\u4e0d\u50c5\u63d0\u4f9b\u4e86\u6578\u64da\u6301\u4e45\u5316\u7684\u80fd\u529b\uff0c\u9084\u4f7f\u5f97\u6578\u64da\u6aa2\u7d22\u3001\u66f4\u65b0\u548c\u522a\u9664\u8b8a\u5f97\u7c21\u55ae\u9ad8\u6548\u3002\u96a8\u8457\u6578\u64da\u5eab\u6280\u8853\u7684\u4e0d\u65b7\u767c\u5c55\uff0c\u638c\u63e1\u9019\u4e9b\u6578\u64da\u5eab\u985e\u7684\u4f7f\u7528\u5c07\u5c0d\u958b\u767c\u8005\u7684\u8077\u696d\u751f\u6daf\u7522\u751f\u7a4d\u6975\u7684\u5f71\u97ff\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\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u7a76Java\u4e2d\u6578\u64da\u5eab\u985e\u7684\u91cd\u8981\u4f5c\u7528\uff0c\u4e86\u89e3\u5176\u5728\u6578\u64da\u7ba1\u7406\u3001\u9023\u63a5\u548c\u64cd\u4f5c\u4e2d\u7684\u95dc\u9375\u89d2\u8272\uff0c\u63d0\u5347\u958b\u767c\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-181644","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181644","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=181644"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181644\/revisions"}],"predecessor-version":[{"id":181645,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181644\/revisions\/181645"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=181644"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=181644"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=181644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}