{"id":61947,"date":"2024-10-13T14:58:17","date_gmt":"2024-10-13T06:58:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61947\/"},"modified":"2024-10-13T14:58:17","modified_gmt":"2024-10-13T06:58:17","slug":"java%e9%80%a3%e6%8e%a5hive2%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%96%b9%e6%b3%95%e8%a9%b3%e8%a7%a3-java-hive2%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61947\/","title":{"rendered":"Java\u9023\u63a5Hive2\u6578\u64da\u5eab\u7684\u65b9\u6cd5\u8a73\u89e3 (java hive2\u6578\u64da\u5eab\u9023\u63a5)"},"content":{"rendered":"<h1 id=\"java%e9%80%a3%e6%8e%a5hive2%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%96%b9%e6%b3%95%e8%a9%b3%e8%a7%a3-vEzOwkESzj\">Java\u9023\u63a5Hive2\u6578\u64da\u5eab\u7684\u65b9\u6cd5\u8a73\u89e3<\/h1>\n<p>\u5728\u5927\u6578\u64da\u6642\u4ee3\uff0cApache Hive\u4f5c\u70ba\u4e00\u500b\u6578\u64da\u5009\u5eab\u57fa\u790e\u8a2d\u65bd\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u6578\u64da\u5206\u6790\u548c\u67e5\u8a62\u3002Hive2\u662fHive\u7684\u5347\u7d1a\u7248\u672c\uff0c\u63d0\u4f9b\u4e86\u66f4\u597d\u7684\u6027\u80fd\u548c\u529f\u80fd\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528Java\u9023\u63a5Hive2\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e7%92%b0%e5%a2%83%e6%ba%96%e5%82%99-vEzOwkESzj\">\u74b0\u5883\u6e96\u5099<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u4ee5\u4e0b\u74b0\u5883\u5df2\u7d93\u8a2d\u7f6e\u597d\uff1a<\/p>\n<ul>\n<li>Java Development Kit (JDK) 1.8\u6216\u66f4\u9ad8\u7248\u672c<\/li>\n<li>Apache Hive 2.x<\/li>\n<li>Hive JDBC\u9a45\u52d5\u7a0b\u5e8f<\/li>\n<li>\u4e00\u500b\u53ef\u7528\u7684Hive\u6578\u64da\u5eab<\/li>\n<\/ul>\n<h2 id=\"%e6%b7%bb%e5%8a%a0hive-jdbc%e9%a9%85%e5%8b%95%e7%a8%8b%e5%ba%8f-vEzOwkESzj\">\u6dfb\u52a0Hive JDBC\u9a45\u52d5\u7a0b\u5e8f<\/h2>\n<p>\u8981\u9023\u63a5Hive2\uff0c\u60a8\u9700\u8981\u4e0b\u8f09Hive JDBC\u9a45\u52d5\u7a0b\u5e8f\u3002\u53ef\u4ee5\u5f9eApache Hive\u7684\u5b98\u65b9\u7db2\u7ad9\u7372\u53d6\u6700\u65b0\u7248\u672c\u7684JDBC\u9a45\u52d5\u3002\u4e0b\u8f09\u5f8c\uff0c\u5c07\u5176\u6dfb\u52a0\u5230\u60a8\u7684Java\u9805\u76ee\u7684\u985e\u8def\u5f91\u4e2d\u3002<\/p>\n<h2 id=\"java%e4%bb%a3%e7%a2%bc%e7%a4%ba%e4%be%8b-vEzOwkESzj\">Java\u4ee3\u78bc\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528Java\u9023\u63a5Hive2\u6578\u64da\u5eab\u7684\u57fa\u672c\u4ee3\u78bc\u793a\u4f8b\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.ResultSet;\nimport java.sql.Statement;\n\npublic class HiveJdbcExample {\n    public static void main(String[] args) {\n        \/\/ Hive JDBC URL\n        String url = \"jdbc:hive2:\/\/:\/\";\n        \/\/ Hive\u7528\u6236\u540d\u548c\u5bc6\u78bc\n        String user = \"\";\n        String password = \"\";\n\n        Connection connection = null;\n        Statement statement = null;\n        ResultSet resultSet = null;\n\n        try {\n            \/\/ \u52a0\u8f09Hive JDBC\u9a45\u52d5\n            Class.forName(\"org.apache.hive.hcatalog.data.JsonSerDe\");\n            \/\/ \u5efa\u7acb\u9023\u63a5\n            connection = DriverManager.getConnection(url, user, password);\n            \/\/ \u5275\u5efa\u8a9e\u53e5\n            statement = connection.createStatement();\n            \/\/ \u57f7\u884c\u67e5\u8a62\n            resultSet = statement.executeQuery(\"SELECT * FROM <Table>\");\n\n            \/\/ \u8655\u7406\u7d50\u679c\u96c6\n            while (resultSet.next()) {\n                System.out.println(resultSet.getString(1)); \/\/ \u6839\u64da\u9700\u8981\u7372\u53d6\u5217\u6578\u64da\n            }\n        } catch (Exception e) {\n            e.printStackTrace();\n        } finally {\n            \/\/ \u95dc\u9589\u8cc7\u6e90\n            try {\n                if (resultSet != null) resultSet.close();\n                if (statement != null) statement.close();\n                if (connection != null) connection.close();\n            } catch (Exception e) {\n                e.printStackTrace();\n            }\n        }\n    }\n}<\/code><\/pre>\n<h2 id=\"%e4%bb%a3%e7%a2%bc%e8%a7%a3%e6%9e%90-vEzOwkESzj\">\u4ee3\u78bc\u89e3\u6790<\/h2>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5b9a\u7fa9\u4e86Hive\u7684JDBC URL\uff0c\u9019\u5305\u62ecHive\u670d\u52d9\u5668\u7684IP\u5730\u5740\u3001\u7aef\u53e3\u865f\u548c\u6578\u64da\u5eab\u540d\u7a31\u3002\u7136\u5f8c\uff0c\u6211\u5011\u52a0\u8f09Hive JDBC\u9a45\u52d5\uff0c\u4e26\u4f7f\u7528DriverManager\u5efa\u7acb\u9023\u63a5\u3002\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u5275\u5efa\u4e00\u500bStatement\u5c0d\u8c61\u4f86\u57f7\u884cSQL\u67e5\u8a62\uff0c\u4e26\u901a\u904eResultSet\u8655\u7406\u67e5\u8a62\u7d50\u679c\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-vEzOwkESzj\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u78ba\u4fddHive\u670d\u52d9\u5668\u6b63\u5728\u904b\u884c\uff0c\u4e26\u4e14\u53ef\u4ee5\u901a\u904e\u6307\u5b9a\u7684IP\u548c\u7aef\u53e3\u8a2a\u554f\u3002<\/li>\n<li>\u6839\u64da\u9700\u8981\u8abf\u6574SQL\u67e5\u8a62\uff0c\u4ee5\u7372\u53d6\u6240\u9700\u7684\u6578\u64da\u3002<\/li>\n<li>\u8655\u7406\u7570\u5e38\u60c5\u6cc1\uff0c\u78ba\u4fdd\u8cc7\u6e90\u7684\u6b63\u78ba\u91cb\u653e\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-vEzOwkESzj\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u4f7f\u7528Java\u9023\u63a5\u5230Hive2\u6578\u64da\u5eab\uff0c\u4e26\u57f7\u884c\u67e5\u8a62\u4ee5\u7372\u53d6\u6578\u64da\u3002\u9019\u5c0d\u65bc\u9700\u8981\u9032\u884c\u5927\u6578\u64da\u5206\u6790\u7684\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u6280\u80fd\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u4f3a\u670d\u5668\u4f86\u904b\u884c\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u4ee5\u78ba\u4fdd\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u548c\u5b58\u5132\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Java\u9023\u63a5Hive2\u6578\u64da\u5eab\u7684\u8a73\u7d30\u65b9\u6cd5\uff0c\u6db5\u84cb\u914d\u7f6e\u3001\u9a45\u52d5\u7a0b\u5e8f\u548c\u793a\u4f8b\u4ee3\u78bc\uff0c\u52a9\u60a8\u8f15\u9b06\u5be6\u73fe\u6578\u64da\u8a2a\u554f\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-61947","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61947","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=61947"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61947\/revisions"}],"predecessor-version":[{"id":61948,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61947\/revisions\/61948"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61947"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61947"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61947"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}