{"id":31071,"date":"2022-10-08T05:50:43","date_gmt":"2023-01-22T14:19:43","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java%e4%b8%8esql%e7%9a%84%e7%bb%93%e5%90%88%e3%80%82javaxsql%e7%9a%84%e7%bb%84%e5%90%88%e3%80%82\/"},"modified":"2025-08-12T22:10:50","modified_gmt":"2025-08-12T14:10:50","slug":"java%e4%b8%8esql%e7%9a%84%e7%bb%93%e5%90%88%e3%80%82javaxsql%e7%9a%84%e7%bb%84%e5%90%88%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java%e4%b8%8esql%e7%9a%84%e7%bb%93%e5%90%88%e3%80%82javaxsql%e7%9a%84%e7%bb%84%e5%90%88%e3%80%82\/","title":{"rendered":"JAVA\u4e0eSQL\u7684\u7ed3\u5408\u3002JAVA\u00d7SQL\u7684\u7ec4\u5408"},"content":{"rendered":"<h1>\u8bfe\u9898<\/h1>\n<p>\u95ee\u9898\uff1a\u8bf7\u4f7f\u7528JAVA\u6267\u884cSELECT\u8bed\u53e5\uff08\u9650\u5236ID\u5c0f\u4e8e\u6216\u7b49\u4e8e3\uff09<br \/>\n\u4f7f\u7528\u8f6f\u4ef6\uff1aXAMPP\u3001eclipse<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">package<\/span> <span class=\"nn\">DBA<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.sql.Connection<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.sql.DriverManager<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.sql.PreparedStatement<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.sql.ResultSet<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.sql.SQLException<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">DBA1<\/span> <span class=\"o\">{<\/span>\r\n\t<span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"kd\">throws<\/span> <span class=\"nc\">SQLException<\/span> <span class=\"o\">{<\/span>\r\n\t\t <span class=\"nc\">String<\/span> <span class=\"n\">url<\/span><span class=\"o\">=<\/span><span class=\"s\">\"jdbc:mysql:\/\/localhost\/JDBC\"<\/span><span class=\"o\">;<\/span>\r\n\t\t<span class=\"nc\">String<\/span> <span class=\"n\">user<\/span> <span class=\"o\">=<\/span><span class=\"s\">\"root\"<\/span><span class=\"o\">;<\/span>\r\n\t\t<span class=\"nc\">String<\/span> <span class=\"n\">password<\/span> <span class=\"o\">=<\/span><span class=\"s\">\"\"<\/span><span class=\"o\">;<\/span>\r\n\t\t<span class=\"nc\">Connection<\/span> <span class=\"n\">con<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">DriverManager<\/span><span class=\"o\">.<\/span><span class=\"na\">getConnection<\/span><span class=\"o\">(<\/span><span class=\"n\">url<\/span><span class=\"o\">,<\/span><span class=\"n\">user<\/span><span class=\"o\">,<\/span><span class=\"n\">password<\/span><span class=\"o\">);<\/span>\r\n\t\t<span class=\"nc\">PreparedStatement<\/span> <span class=\"n\">pstmt<\/span> <span class=\"o\">=<\/span><span class=\"n\">con<\/span><span class=\"o\">.<\/span><span class=\"na\">prepareStatement<\/span>\r\n\t\t\t\t<span class=\"o\">(<\/span><span class=\"s\">\"SELECT id,name,age FROM woker WHERE id&lt;4\"<\/span><span class=\"o\">);<\/span>\r\n\t\t<span class=\"nc\">ResultSet<\/span> <span class=\"n\">rs<\/span> <span class=\"o\">=<\/span><span class=\"n\">pstmt<\/span><span class=\"o\">.<\/span><span class=\"na\">executeQuery<\/span><span class=\"o\">();<\/span>\r\n\t\t<span class=\"k\">while<\/span><span class=\"o\">(<\/span><span class=\"n\">rs<\/span><span class=\"o\">.<\/span><span class=\"na\">next<\/span><span class=\"o\">()){<\/span>\r\n\t\t\t<span class=\"kt\">int<\/span> <span class=\"n\">id<\/span> <span class=\"o\">=<\/span><span class=\"n\">rs<\/span><span class=\"o\">.<\/span><span class=\"na\">getInt<\/span><span class=\"o\">(<\/span><span class=\"s\">\"id\"<\/span><span class=\"o\">);<\/span>\r\n\t\t\t<span class=\"nc\">String<\/span> <span class=\"n\">name<\/span> <span class=\"o\">=<\/span><span class=\"n\">rs<\/span><span class=\"o\">.<\/span><span class=\"na\">getString<\/span><span class=\"o\">(<\/span><span class=\"s\">\"name\"<\/span><span class=\"o\">);<\/span>\r\n\t\t\t<span class=\"kt\">int<\/span> <span class=\"n\">age<\/span><span class=\"o\">=<\/span><span class=\"n\">rs<\/span><span class=\"o\">.<\/span><span class=\"na\">getInt<\/span><span class=\"o\">(<\/span><span class=\"s\">\"age\"<\/span><span class=\"o\">);<\/span>\r\n\t\t\t<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"ID:\"<\/span><span class=\"o\">+<\/span> <span class=\"n\">id<\/span> <span class=\"o\">+<\/span><span class=\"s\">\" \u540d\u524d:\"<\/span><span class=\"o\">+<\/span> <span class=\"n\">name<\/span> <span class=\"o\">+<\/span><span class=\"s\">\" \u5e74\u9f62:\"<\/span><span class=\"o\">+<\/span> <span class=\"n\">age<\/span> <span class=\"o\">);<\/span>\r\n\t\t<span class=\"o\">}<\/span>\r\n\t\t<span class=\"n\">pstmt<\/span><span class=\"o\">.<\/span><span class=\"na\">close<\/span><span class=\"o\">();<\/span>\r\n\t\t<span class=\"n\">con<\/span><span class=\"o\">.<\/span><span class=\"na\">close<\/span><span class=\"o\">();<\/span>\r\n\t<span class=\"o\">}<\/span>\r\n\t\r\n\t<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u7ed3\u679c<\/h2>\n<pre class=\"post-pre\"><code>ID:1 \u540d\u524d:\u5c71\u7530\u592a\u90ce \u5e74\u9f62:22\r\nID:2 \u540d\u524d:\u82b1\u7530\u6b21\u90ce \u5e74\u9f62:23\r\nID:3 \u540d\u524d:\u5ddd\u7530\u4e09\u90ce \u5e74\u9f62:22\r\n<\/code><\/pre>\n<p>\u4eca\u5929\u7684\u5b66\u4e60\uff1a\u901a\u8fc7\u6267\u884c\u4e00\u6b21SQL\u7684SELECT\u8bed\u53e5\u53ef\u4ee5\u66f4\u52a0\u6613\u61c2\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8bfe\u9898 \u95ee\u9898\uff1a\u8bf7\u4f7f\u7528JAVA\u6267\u884cSELECT\u8bed\u53e5\uff08\u9650\u5236ID\u5c0f\u4e8e\u6216\u7b49\u4e8e3\uff09 \u4f7f\u7528\u8f6f\u4ef6\uff1aXAMPP\u3001eclipse  [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31071","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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