{"id":62077,"date":"2024-10-13T15:59:15","date_gmt":"2024-10-13T07:59:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62077\/"},"modified":"2024-10-13T15:59:15","modified_gmt":"2024-10-13T07:59:15","slug":"java%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%86%e9%a0%81%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5%e8%a9%b3%e8%a7%a3-java%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%86%e9%a0%81%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5%e6%80%8e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62077\/","title":{"rendered":"Java\u6578\u64da\u5eab\u5206\u9801\u67e5\u8a62\u8a9e\u53e5\u8a73\u89e3 (java\u6578\u64da\u5eab\u5206\u9801\u67e5\u8a62\u8a9e\u53e5\u600e\u9ebc\u5beb)"},"content":{"rendered":"<h1 id=\"java%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%86%e9%a0%81%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5%e8%a9%b3%e8%a7%a3-cMlElifsNn\">Java\u6578\u64da\u5eab\u5206\u9801\u67e5\u8a62\u8a9e\u53e5\u8a73\u89e3<\/h1>\n<p>\u5728\u958b\u767c\u61c9\u7528\u7a0b\u5e8f\u6642\uff0c\u6578\u64da\u7684\u5206\u9801\u67e5\u8a62\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002\u5c24\u5176\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u5206\u9801\u67e5\u8a62\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5728Java\u4e2d\u5be6\u73fe\u6578\u64da\u5eab\u7684\u5206\u9801\u67e5\u8a62\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%88%86%e9%a0%81%e6%9f%a5%e8%a9%a2%ef%bc%9f-cMlElifsNn\">\u4ec0\u9ebc\u662f\u5206\u9801\u67e5\u8a62\uff1f<\/h2>\n<p>\u5206\u9801\u67e5\u8a62\u662f\u6307\u5c07\u67e5\u8a62\u7d50\u679c\u5206\u6210\u591a\u500b\u9801\u9762\uff0c\u6bcf\u6b21\u53ea\u986f\u793a\u4e00\u90e8\u5206\u6578\u64da\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u4e00\u6b21\u6027\u52a0\u8f09\u5927\u91cf\u6578\u64da\u6240\u5e36\u4f86\u7684\u6027\u80fd\u554f\u984c\uff0c\u4e26\u63d0\u9ad8\u7528\u6236\u7684\u64cd\u4f5c\u6548\u7387\u3002\u901a\u5e38\uff0c\u5206\u9801\u67e5\u8a62\u9700\u8981\u6307\u5b9a\u7576\u524d\u9801\u78bc\u548c\u6bcf\u9801\u986f\u793a\u7684\u8a18\u9304\u6578\u3002<\/p>\n<h2 id=\"%e5%88%86%e9%a0%81%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%9f%ba%e6%9c%acsql%e8%aa%9e%e5%8f%a5-cMlElifsNn\">\u5206\u9801\u67e5\u8a62\u7684\u57fa\u672cSQL\u8a9e\u53e5<\/h2>\n<p>\u5728SQL\u4e2d\uff0c\u5206\u9801\u67e5\u8a62\u7684\u5be6\u73fe\u65b9\u5f0f\u6703\u6839\u64da\u4e0d\u540c\u7684\u6578\u64da\u5eab\u800c\u6709\u6240\u4e0d\u540c\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u898b\u6578\u64da\u5eab\u7684\u5206\u9801\u67e5\u8a62\u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><strong>MySQL:<\/strong>\n<pre><code>SELECT * FROM \u8868\u540d LIMIT \u504f\u79fb\u91cf, \u6bcf\u9801\u8a18\u9304\u6578;<\/code><\/pre>\n<\/li>\n<li><strong>PostgreSQL:<\/strong>\n<pre><code>SELECT * FROM \u8868\u540d LIMIT \u6bcf\u9801\u8a18\u9304\u6578 OFFSET \u504f\u79fb\u91cf;<\/code><\/pre>\n<\/li>\n<li><strong>SQL Server:<\/strong>\n<pre><code>SELECT * FROM \u8868\u540d ORDER BY \u5217\u540d OFFSET \u504f\u79fb\u91cf ROWS FETCH NEXT \u6bcf\u9801\u8a18\u9304\u6578 ROWS ONLY;<\/code><\/pre>\n<\/li>\n<\/ul>\n<h2 id=\"%e5%9c%a8java%e4%b8%ad%e5%af%a6%e7%8f%be%e5%88%86%e9%a0%81%e6%9f%a5%e8%a9%a2-cMlElifsNn\">\u5728Java\u4e2d\u5be6\u73fe\u5206\u9801\u67e5\u8a62<\/h2>\n<p>\u5728Java\u4e2d\u5be6\u73fe\u5206\u9801\u67e5\u8a62\u901a\u5e38\u6d89\u53ca\u5230JDBC\u6216ORM\u6846\u67b6\uff08\u5982Hibernate\uff09\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528JDBC\u9032\u884c\u5206\u9801\u67e5\u8a62\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e8%a8%ad%e7%bd%ae%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-cMlElifsNn\">1. \u8a2d\u7f6e\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.PreparedStatement;\nimport java.sql.ResultSet;\n\nConnection connection = DriverManager.getConnection(\"jdbc:mysql:\/\/localhost:3306\/\u6578\u64da\u5eab\u540d\", \"\u7528\u6236\u540d\", \"\u5bc6\u78bc\");<\/code><\/pre>\n<h3 id=\"2-%e7%b7%a8%e5%af%ab%e5%88%86%e9%a0%81%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5-cMlElifsNn\">2. \u7de8\u5beb\u5206\u9801\u67e5\u8a62\u8a9e\u53e5<\/h3>\n<pre><code>int pageNumber = 1; \/\/ \u7576\u524d\u9801\u78bc\nint pageSize = 10; \/\/ \u6bcf\u9801\u986f\u793a\u7684\u8a18\u9304\u6578\nint offset = (pageNumber - 1) * pageSize;\n\nString sql = \"SELECT * FROM \u8868\u540d LIMIT ?, ?\";\nPreparedStatement preparedStatement = connection.prepareStatement(sql);\npreparedStatement.setInt(1, offset);\npreparedStatement.setInt(2, pageSize);<\/code><\/pre>\n<h3 id=\"3-%e5%9f%b7%e8%a1%8c%e6%9f%a5%e8%a9%a2%e4%b8%a6%e8%99%95%e7%90%86%e7%b5%90%e6%9e%9c-cMlElifsNn\">3. \u57f7\u884c\u67e5\u8a62\u4e26\u8655\u7406\u7d50\u679c<\/h3>\n<pre><code>ResultSet resultSet = preparedStatement.executeQuery();\nwhile (resultSet.next()) {\n    \/\/ \u8655\u7406\u67e5\u8a62\u7d50\u679c\n    System.out.println(resultSet.getString(\"\u5217\u540d\"));\n}<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8orm%e6%a1%86%e6%9e%b6%e9%80%b2%e8%a1%8c%e5%88%86%e9%a0%81%e6%9f%a5%e8%a9%a2-cMlElifsNn\">\u4f7f\u7528ORM\u6846\u67b6\u9032\u884c\u5206\u9801\u67e5\u8a62<\/h2>\n<p>\u5982\u679c\u4f7f\u7528Hibernate\u7b49ORM\u6846\u67b6\uff0c\u5206\u9801\u67e5\u8a62\u6703\u66f4\u52a0\u7c21\u55ae\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528Hibernate\u9032\u884c\u5206\u9801\u67e5\u8a62\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>import org.hibernate.Session;\nimport org.hibernate.query.Query;\n\nSession session = sessionFactory.openSession();\nQuery query = session.createQuery(\"FROM \u5be6\u9ad4\u985e\", \u5be6\u9ad4\u985e.class);\nquery.setFirstResult(offset);\nquery.setMaxResults(pageSize);\nList results = query.list();<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-cMlElifsNn\">\u7e3d\u7d50<\/h2>\n<p>\u5206\u9801\u67e5\u8a62\u5728Java\u61c9\u7528\u7a0b\u5e8f\u4e2d\u662f\u4e00\u500b\u91cd\u8981\u7684\u529f\u80fd\uff0c\u80fd\u5920\u6709\u6548\u5730\u7ba1\u7406\u548c\u986f\u793a\u5927\u91cf\u6578\u64da\u3002\u7121\u8ad6\u662f\u4f7f\u7528JDBC\u9084\u662fORM\u6846\u67b6\uff0c\u7406\u89e3\u5206\u9801\u67e5\u8a62\u7684\u57fa\u672c\u539f\u7406\u548c\u5be6\u73fe\u65b9\u5f0f\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u901a\u904e\u672c\u6587\u7684\u4ecb\u7d39\uff0c\u5e0c\u671b\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u638c\u63e1Java\u6578\u64da\u5eab\u5206\u9801\u67e5\u8a62\u7684\u6280\u5de7\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\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0eJava\u6578\u64da\u5eab\u5206\u9801\u67e5\u8a62\u8a9e\u53e5\u7684\u5beb\u6cd5\uff0c\u63d0\u4f9b\u5be6\u7528\u7bc4\u4f8b\u8207\u6280\u5de7\uff0c\u52a9\u4f60\u9ad8\u6548\u7ba1\u7406\u6578\u64da\u986f\u793a\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-62077","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62077","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=62077"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62077\/revisions"}],"predecessor-version":[{"id":62078,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62077\/revisions\/62078"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62077"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62077"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62077"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}