{"id":62137,"date":"2024-10-13T16:30:14","date_gmt":"2024-10-13T08:30:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62137\/"},"modified":"2024-10-13T16:30:14","modified_gmt":"2024-10-13T08:30:14","slug":"jdbc%e9%80%a3%e6%8e%a5db2%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%93%8d%e4%bd%9c%e6%8a%80%e5%b7%a7%e5%8c%af%e7%b8%bd","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62137\/","title":{"rendered":"JDBC\u9023\u63a5DB2\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u6280\u5de7\u532f\u7e3d"},"content":{"rendered":"<h1 id=\"jdbc%e9%80%a3%e6%8e%a5db2%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%93%8d%e4%bd%9c%e6%8a%80%e5%b7%a7%e5%8c%af%e7%b8%bd-pAgysHYjNM\">JDBC\u9023\u63a5DB2\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u6280\u5de7\u532f\u7e3d<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u6642\u4ee3\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u64cd\u4f5c\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002DB2\u4f5c\u70baIBM\u7684\u4e00\u6b3e\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u4f01\u696d\u7d1a\u61c9\u7528\u4e2d\u3002Java\u6578\u64da\u5eab\u9023\u63a5\uff08JDBC\uff09\u662fJava\u8a9e\u8a00\u4e2d\u7528\u65bc\u9023\u63a5\u548c\u64cd\u4f5c\u6578\u64da\u5eab\u7684API\uff0c\u672c\u6587\u5c07\u7e3d\u7d50\u4e00\u4e9bJDBC\u9023\u63a5DB2\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u6280\u5de7\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u9ad8\u6548\u5730\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"1-%e7%92%b0%e5%a2%83%e6%ba%96%e5%82%99-pAgysHYjNM\">1. \u74b0\u5883\u6e96\u5099<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u78ba\u4fdd\u5df2\u7d93\u5b89\u88dd\u4e86\u4ee5\u4e0b\u74b0\u5883\uff1a<\/p>\n<ul>\n<li>Java Development Kit (JDK)<\/li>\n<li>DB2\u6578\u64da\u5eab<\/li>\n<li>DB2 JDBC\u9a45\u52d5\u7a0b\u5e8f<\/li>\n<\/ul>\n<p>\u4e0b\u8f09DB2 JDBC\u9a45\u52d5\u7a0b\u5e8f\u5f8c\uff0c\u5c07\u5176\u6dfb\u52a0\u5230Java\u9805\u76ee\u7684\u985e\u8def\u5f91\u4e2d\u3002\u901a\u5e38\uff0c\u9a45\u52d5\u7a0b\u5e8f\u7684JAR\u6587\u4ef6\u540d\u70ba\u201cdb2jcc.jar\u201d\u3002<\/p>\n<h2 id=\"2-%e5%bb%ba%e7%ab%8b%e9%80%a3%e6%8e%a5-pAgysHYjNM\">2. \u5efa\u7acb\u9023\u63a5<\/h2>\n<p>\u4f7f\u7528JDBC\u9023\u63a5DB2\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\n\npublic class DB2Connection {\n    public static void main(String[] args) {\n        String url = \"jdbc:db2:\/\/localhost:50000\/YOUR_DB_NAME\";\n        String user = \"YOUR_USERNAME\";\n        String password = \"YOUR_PASSWORD\";\n\n        try {\n            Connection connection = DriverManager.getConnection(url, user, password);\n            System.out.println(\"\u6210\u529f\u9023\u63a5\u5230DB2\u6578\u64da\u5eab\uff01\");\n            \/\/ \u5728\u6b64\u8655\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u8acb\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u66ff\u63db\u6578\u64da\u5eab\u540d\u7a31\u3001\u7528\u6236\u540d\u548c\u5bc6\u78bc\u3002<\/p>\n<h2 id=\"3-%e8%99%95%e7%90%86sql%e7%95%b0%e5%b8%b8-pAgysHYjNM\">3. \u8655\u7406SQL\u7570\u5e38<\/h2>\n<p>\u5728\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0c\u8655\u7406SQL\u7570\u5e38\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u53ef\u4ee5\u4f7f\u7528try-catch\u584a\u4f86\u6355\u7372SQLException\uff0c\u4e26\u6839\u64da\u7570\u5e38\u985e\u578b\u9032\u884c\u76f8\u61c9\u7684\u8655\u7406\u3002<\/p>\n<pre><code>try {\n    \/\/ \u6578\u64da\u5eab\u64cd\u4f5c\n} catch (SQLException e) {\n    System.err.println(\"SQL\u932f\u8aa4\u78bc: \" + e.getErrorCode());\n    System.err.println(\"\u932f\u8aa4\u4fe1\u606f: \" + e.getMessage());\n}\n<\/code><\/pre>\n<h2 id=\"4-%e4%bd%bf%e7%94%a8preparedstatement-pAgysHYjNM\">4. \u4f7f\u7528PreparedStatement<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8\u6027\u80fd\u548c\u5b89\u5168\u6027\uff0c\u5efa\u8b70\u4f7f\u7528PreparedStatement\u4f86\u57f7\u884cSQL\u67e5\u8a62\u3002\u9019\u6a23\u53ef\u4ee5\u9632\u6b62SQL\u6ce8\u5165\u653b\u64ca\uff0c\u4e26\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/p>\n<pre><code>String sql = \"SELECT * FROM employees WHERE id = ?\";\nPreparedStatement preparedStatement = connection.prepareStatement(sql);\npreparedStatement.setInt(1, 1);\nResultSet resultSet = preparedStatement.executeQuery();\nwhile (resultSet.next()) {\n    System.out.println(\"\u54e1\u5de5\u59d3\u540d: \" + resultSet.getString(\"name\"));\n}\n<\/code><\/pre>\n<h2 id=\"5-%e9%97%9c%e9%96%89%e8%b3%87%e6%ba%90-pAgysHYjNM\">5. \u95dc\u9589\u8cc7\u6e90<\/h2>\n<p>\u5728\u5b8c\u6210\u6578\u64da\u5eab\u64cd\u4f5c\u5f8c\uff0c\u52d9\u5fc5\u95dc\u9589\u6240\u6709\u8cc7\u6e90\uff0c\u4ee5\u907f\u514d\u5167\u5b58\u6cc4\u6f0f\u3002\u53ef\u4ee5\u4f7f\u7528finally\u584a\u4f86\u78ba\u4fdd\u8cc7\u6e90\u88ab\u6b63\u78ba\u95dc\u9589\u3002<\/p>\n<pre><code>finally {\n    try {\n        if (resultSet != null) resultSet.close();\n        if (preparedStatement != null) preparedStatement.close();\n        if (connection != null) connection.close();\n    } catch (SQLException e) {\n        e.printStackTrace();\n    }\n}\n<\/code><\/pre>\n<h2 id=\"6-%e5%85%b6%e4%bb%96%e6%8a%80%e5%b7%a7-pAgysHYjNM\">6. \u5176\u4ed6\u6280\u5de7<\/h2>\n<ul>\n<li><strong>\u4f7f\u7528\u9023\u63a5\u6c60\uff1a<\/strong>\u70ba\u4e86\u63d0\u9ad8\u6027\u80fd\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u9023\u63a5\u6c60\u6280\u8853\uff0c\u5982Apache DBCP\u6216HikariCP\u3002<\/li>\n<li><strong>\u65e5\u8a8c\u8a18\u9304\uff1a<\/strong>\u5728\u958b\u767c\u904e\u7a0b\u4e2d\uff0c\u4f7f\u7528\u65e5\u8a8c\u8a18\u9304\u5de5\u5177\uff08\u5982Log4j\uff09\u4f86\u8a18\u9304SQL\u67e5\u8a62\u548c\u7570\u5e38\u4fe1\u606f\uff0c\u6709\u52a9\u65bc\u5f8c\u671f\u7684\u8abf\u8a66\u548c\u7dad\u8b77\u3002<\/li>\n<li><strong>\u6027\u80fd\u512a\u5316\uff1a<\/strong>\u5b9a\u671f\u6aa2\u67e5SQL\u67e5\u8a62\u7684\u6027\u80fd\uff0c\u4f7f\u7528DB2\u7684\u6027\u80fd\u76e3\u63a7\u5de5\u5177\u4f86\u5206\u6790\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-pAgysHYjNM\">\u7e3d\u7d50<\/h2>\n<p>\u672c\u6587\u4ecb\u7d39\u4e86JDBC\u9023\u63a5DB2\u6578\u64da\u5eab\u7684\u4e00\u4e9b\u57fa\u672c\u64cd\u4f5c\u6280\u5de7\uff0c\u5305\u62ec\u74b0\u5883\u6e96\u5099\u3001\u5efa\u7acb\u9023\u63a5\u3001\u8655\u7406\u7570\u5e38\u3001\u4f7f\u7528PreparedStatement\u3001\u95dc\u9589\u8cc7\u6e90\u53ca\u5176\u4ed6\u512a\u5316\u5efa\u8b70\u3002\u9019\u4e9b\u6280\u5de7\u5c07\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u9ad8\u6548\u5730\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u63d0\u5347\u61c9\u7528\u7684\u6027\u80fd\u548c\u5b89\u5168\u6027\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u670d\u52d9\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1JDBC\u9023\u63a5DB2\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u7c21\u5316\u958b\u767c\u6d41\u7a0b\uff0c\u52a9\u529b\u9805\u76ee\u6210\u529f\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-62137","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62137","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=62137"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62137\/revisions"}],"predecessor-version":[{"id":62138,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62137\/revisions\/62138"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62137"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62137"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}