{"id":97118,"date":"2024-10-20T15:09:15","date_gmt":"2024-10-20T07:09:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/97118\/"},"modified":"2024-10-20T15:09:15","modified_gmt":"2024-10-20T07:09:15","slug":"p%e9%a0%85%e7%9b%ae%e4%b8%ad%e6%b7%bb%e5%8a%a0%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%ef%bc%9a%e6%ad%a5%e9%a9%9f%e8%88%87%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-jsp%e9%a0%85%e7%9b%ae%e6%b7%bb","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/97118\/","title":{"rendered":"P\u9805\u76ee\u4e2d\u6dfb\u52a0\u6578\u64da\u5eab\u9023\u63a5\uff1a\u6b65\u9a5f\u8207\u6ce8\u610f\u4e8b\u9805 (jsp\u9805\u76ee\u6dfb\u52a0\u6578\u64da\u5eab\u9023\u63a5)"},"content":{"rendered":"<h1 id=\"p%e9%a0%85%e7%9b%ae%e4%b8%ad%e6%b7%bb%e5%8a%a0%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%ef%bc%9a%e6%ad%a5%e9%a9%9f%e8%88%87%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-jsp%e9%a0%85%e7%9b%ae%e6%b7%bb-uUbImwxVRe\">P\u9805\u76ee\u4e2d\u6dfb\u52a0\u6578\u64da\u5eab\u9023\u63a5\uff1a\u6b65\u9a5f\u8207\u6ce8\u610f\u4e8b\u9805 (jsp\u9805\u76ee\u6dfb\u52a0\u6578\u64da\u5eab\u9023\u63a5)<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u5df2\u6210\u70ba\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u5c0d\u65bc\u4f7f\u7528Java Server Pages (JSP)\u7684\u9805\u76ee\u4f86\u8aaa\uff0c\u6b63\u78ba\u5730\u6dfb\u52a0\u6578\u64da\u5eab\u9023\u63a5\u662f\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u6b63\u5e38\u904b\u884c\u7684\u95dc\u9375\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5728JSP\u9805\u76ee\u4e2d\u6dfb\u52a0\u6578\u64da\u5eab\u9023\u63a5\u7684\u6b65\u9a5f\u8207\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"%e6%ad%a5%e9%a9%9f%e4%b8%80%ef%bc%9a%e9%81%b8%e6%93%87%e6%95%b8%e6%93%9a%e5%ba%ab-uUbImwxVRe\">\u6b65\u9a5f\u4e00\uff1a\u9078\u64c7\u6578\u64da\u5eab<\/h2>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u9078\u64c7\u4e00\u500b\u5408\u9069\u7684\u6578\u64da\u5eab\u3002\u5e38\u898b\u7684\u9078\u64c7\u5305\u62ecMySQL\u3001PostgreSQL\u548cOracle\u7b49\u3002\u6bcf\u7a2e\u6578\u64da\u5eab\u90fd\u6709\u5176\u7279\u9ede\uff0c\u9078\u64c7\u6642\u61c9\u6839\u64da\u9805\u76ee\u7684\u9700\u6c42\u9032\u884c\u8003\u91cf\u3002<\/p>\n<h2 id=\"%e6%ad%a5%e9%a9%9f%e4%ba%8c%ef%bc%9a%e6%b7%bb%e5%8a%a0%e6%95%b8%e6%93%9a%e5%ba%ab%e9%a9%85%e5%8b%95-uUbImwxVRe\">\u6b65\u9a5f\u4e8c\uff1a\u6dfb\u52a0\u6578\u64da\u5eab\u9a45\u52d5<\/h2>\n<p>\u5728JSP\u9805\u76ee\u4e2d\u4f7f\u7528\u6578\u64da\u5eab\u4e4b\u524d\uff0c\u5fc5\u9808\u5c07\u76f8\u61c9\u7684\u6578\u64da\u5eab\u9a45\u52d5\u6dfb\u52a0\u5230\u9805\u76ee\u4e2d\u3002\u4ee5MySQL\u70ba\u4f8b\uff0c\u60a8\u9700\u8981\u4e0b\u8f09MySQL Connector\/J\uff0c\u4e26\u5c07\u5176JAR\u6587\u4ef6\u653e\u5165WEB-INF\/lib\u76ee\u9304\u4e2d\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a-uUbImwxVRe\">\u793a\u4f8b\uff1a<\/h3>\n<pre><code>WEB-INF\/\n    \u2514\u2500\u2500 lib\/\n        \u2514\u2500\u2500 mysql-connector-java-x.x.x.jar\n<\/code><\/pre>\n<h2 id=\"%e6%ad%a5%e9%a9%9f%e4%b8%89%ef%bc%9a%e9%85%8d%e7%bd%ae%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-uUbImwxVRe\">\u6b65\u9a5f\u4e09\uff1a\u914d\u7f6e\u6578\u64da\u5eab\u9023\u63a5<\/h2>\n<p>\u5728JSP\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528JDBC\u4f86\u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5\u3002\u9996\u5148\uff0c\u60a8\u9700\u8981\u5728JSP\u6587\u4ef6\u4e2d\u5c0e\u5165JDBC\u76f8\u95dc\u7684\u985e\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a-uUbImwxVRe\">\u793a\u4f8b\uff1a<\/h3>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u4f86\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u4f86\u5efa\u7acb\u9023\u63a5\uff1a<\/p>\n<pre><code>String url = \"jdbc:mysql:\/\/localhost:3306\/your_database\";\nString user = \"your_username\";\nString password = \"your_password\";\n\nConnection conn = null;\ntry {\n    Class.forName(\"com.mysql.cj.jdbc.Driver\");\n    conn = DriverManager.getConnection(url, user, password);\n    \/\/ \u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\n} catch (ClassNotFoundException e) {\n    e.printStackTrace();\n} catch (SQLException e) {\n    e.printStackTrace();\n} finally {\n    if (conn != null) {\n        try {\n            conn.close();\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n<h2 id=\"%e6%ad%a5%e9%a9%9f%e5%9b%9b%ef%bc%9a%e8%99%95%e7%90%86%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c-uUbImwxVRe\">\u6b65\u9a5f\u56db\uff1a\u8655\u7406\u6578\u64da\u5eab\u64cd\u4f5c<\/h2>\n<p>\u4e00\u65e6\u6210\u529f\u5efa\u7acb\u9023\u63a5\uff0c\u60a8\u5c31\u53ef\u4ee5\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u4f8b\u5982\u67e5\u8a62\u3001\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u3002\u9019\u4e9b\u64cd\u4f5c\u901a\u5e38\u4f7f\u7528PreparedStatement\u4f86\u57f7\u884c\uff0c\u4ee5\u63d0\u9ad8\u5b89\u5168\u6027\u548c\u6027\u80fd\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a-uUbImwxVRe\">\u793a\u4f8b\uff1a<\/h3>\n<pre><code>String query = \"SELECT * FROM users WHERE id = ?\";\nPreparedStatement pstmt = conn.prepareStatement(query);\npstmt.setInt(1, userId);\nResultSet rs = pstmt.executeQuery();\nwhile (rs.next()) {\n    \/\/ \u8655\u7406\u7d50\u679c\n}\n<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-uUbImwxVRe\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u6578\u64da\u5eab\u9023\u63a5\u6c60\uff1a<\/strong>\u5728\u751f\u7522\u74b0\u5883\u4e2d\uff0c\u5efa\u8b70\u4f7f\u7528\u6578\u64da\u5eab\u9023\u63a5\u6c60\u4f86\u7ba1\u7406\u9023\u63a5\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u548c\u8cc7\u6e90\u5229\u7528\u7387\u3002<\/li>\n<li><strong>\u932f\u8aa4\u8655\u7406\uff1a<\/strong>\u78ba\u4fdd\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u9032\u884c\u9069\u7576\u7684\u932f\u8aa4\u8655\u7406\uff0c\u4ee5\u907f\u514d\u61c9\u7528\u7a0b\u5e8f\u5d29\u6f70\u3002<\/li>\n<li><strong>\u5b89\u5168\u6027\uff1a<\/strong>\u907f\u514d\u5728\u4ee3\u78bc\u4e2d\u786c\u7de8\u78bc\u6578\u64da\u5eab\u6191\u8b49\uff0c\u61c9\u8003\u616e\u4f7f\u7528\u74b0\u5883\u8b8a\u91cf\u6216\u914d\u7f6e\u6587\u4ef6\u4f86\u5b58\u5132\u654f\u611f\u4fe1\u606f\u3002<\/li>\n<li><strong>\u95dc\u9589\u8cc7\u6e90\uff1a<\/strong>\u5728\u5b8c\u6210\u6578\u64da\u5eab\u64cd\u4f5c\u5f8c\uff0c\u52d9\u5fc5\u95dc\u9589ResultSet\u3001PreparedStatement\u548cConnection\u7b49\u8cc7\u6e90\uff0c\u4ee5\u9632\u6b62\u5167\u5b58\u6cc4\u6f0f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-uUbImwxVRe\">\u7e3d\u7d50<\/h2>\n<p>\u5728JSP\u9805\u76ee\u4e2d\u6dfb\u52a0\u6578\u64da\u5eab\u9023\u63a5\u662f\u4e00\u500b\u91cd\u8981\u7684\u6b65\u9a5f\uff0c\u6b63\u78ba\u7684\u914d\u7f6e\u548c\u64cd\u4f5c\u53ef\u4ee5\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002\u901a\u904e\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u3001\u6dfb\u52a0\u9a45\u52d5\u3001\u914d\u7f6e\u9023\u63a5\u4ee5\u53ca\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u3002\u82e5\u60a8\u9700\u8981\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u9805\u76ee\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684\u670d\u52d9\uff0c\u78ba\u4fdd\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u5728\u7a69\u5b9a\u7684\u74b0\u5883\u4e2d\u904b\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728JSP\u9805\u76ee\u4e2d\u6dfb\u52a0\u6578\u64da\u5eab\u9023\u63a5\uff0c\u4e86\u89e3\u6b65\u9a5f\u8207\u6ce8\u610f\u4e8b\u9805\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u9806\u5229\u9032\u884c\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-97118","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97118","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=97118"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97118\/revisions"}],"predecessor-version":[{"id":97119,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97118\/revisions\/97119"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=97118"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=97118"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=97118"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}