{"id":61839,"date":"2024-10-13T14:07:20","date_gmt":"2024-10-13T06:07:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61839\/"},"modified":"2024-10-13T14:07:20","modified_gmt":"2024-10-13T06:07:20","slug":"java-web%e9%96%8b%e7%99%bc%e5%af%a6%e6%88%b0%ef%bc%9ap-jdbc%e9%80%a3%e6%8e%a5mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a9%b3%e8%a7%a3-jsp-jdbc%e9%80%a3%e6%8e%a5mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bb%a3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61839\/","title":{"rendered":"Java Web\u958b\u767c\u5be6\u6230\uff1aP JDBC\u9023\u63a5MySQL\u6578\u64da\u5eab\u8a73\u89e3 (jsp jdbc\u9023\u63a5mysql\u6578\u64da\u5eab\u4ee3\u78bc)"},"content":{"rendered":"<h1 id=\"java-web%e9%96%8b%e7%99%bc%e5%af%a6%e6%88%b0%ef%bc%9ap-jdbc%e9%80%a3%e6%8e%a5mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a9%b3%e8%a7%a3-UhxCfNcNDx\">Java Web\u958b\u767c\u5be6\u6230\uff1aP JDBC\u9023\u63a5MySQL\u6578\u64da\u5eab\u8a73\u89e3<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u958b\u767c\u4e2d\uff0cJava\u4f5c\u70ba\u4e00\u7a2e\u5f37\u5927\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2eWeb\u61c9\u7528\u7a0b\u5e8f\u7684\u958b\u767c\u3002\u7279\u5225\u662f\u5728\u4f7f\u7528JDBC\uff08Java Database Connectivity\uff09\u9023\u63a5MySQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u80fd\u5920\u8f15\u9b06\u5730\u9032\u884c\u6578\u64da\u7684\u589e\u522a\u6539\u67e5\u64cd\u4f5c\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528JDBC\u9023\u63a5MySQL\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afjdbc%ef%bc%9f-UhxCfNcNDx\">\u4ec0\u9ebc\u662fJDBC\uff1f<\/h2>\n<p>JDBC\u662f\u4e00\u500bJava API\uff0c\u5141\u8a31Java\u7a0b\u5e8f\u8207\u5404\u7a2e\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u7d44\u6a19\u6e96\u7684\u63a5\u53e3\uff0c\u4f7f\u5f97\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528\u7d71\u4e00\u7684\u65b9\u5f0f\u4f86\u8a2a\u554f\u4e0d\u540c\u7684\u6578\u64da\u5eab\u3002JDBC\u7684\u4e3b\u8981\u7d44\u4ef6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>DriverManager\uff1a\u7ba1\u7406\u6578\u64da\u5eab\u9a45\u52d5\u7a0b\u5e8f\u3002<\/li>\n<li>Connection\uff1a\u8868\u793a\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002<\/li>\n<li>Statement\uff1a\u7528\u65bc\u57f7\u884cSQL\u67e5\u8a62\u3002<\/li>\n<li>ResultSet\uff1a\u8868\u793a\u67e5\u8a62\u7d50\u679c\u7684\u6578\u64da\u96c6\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%92%b0%e5%a2%83%e6%ba%96%e5%82%99-UhxCfNcNDx\">\u74b0\u5883\u6e96\u5099<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u5df2\u7d93\u5b89\u88dd\u4e86\u4ee5\u4e0b\u74b0\u5883\uff1a<\/p>\n<ul>\n<li>Java Development Kit (JDK)<\/li>\n<li>MySQL\u6578\u64da\u5eab<\/li>\n<li>MySQL JDBC\u9a45\u52d5\u7a0b\u5e8f\uff08mysql-connector-java.jar\uff09<\/li>\n<\/ul>\n<h2 id=\"%e9%80%a3%e6%8e%a5mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%ad%a5%e9%a9%9f-UhxCfNcNDx\">\u9023\u63a5MySQL\u6578\u64da\u5eab\u7684\u6b65\u9a5f<\/h2>\n<h3 id=\"1-%e5%8a%a0%e8%bc%89jdbc%e9%a9%85%e5%8b%95%e7%a8%8b%e5%ba%8f-UhxCfNcNDx\">1. \u52a0\u8f09JDBC\u9a45\u52d5\u7a0b\u5e8f<\/h3>\n<p>\u5728Java\u7a0b\u5e8f\u4e2d\uff0c\u9996\u5148\u9700\u8981\u52a0\u8f09MySQL\u7684JDBC\u9a45\u52d5\u7a0b\u5e8f\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u4ee3\u78bc\u5be6\u73fe\uff1a<\/p>\n<pre><code>Class.forName(\"com.mysql.cj.jdbc.Driver\");<\/code><\/pre>\n<h3 id=\"2-%e5%bb%ba%e7%ab%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-UhxCfNcNDx\">2. \u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<p>\u4f7f\u7528DriverManager\u4f86\u5efa\u7acb\u8207MySQL\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002\u4ee5\u4e0b\u662f\u9023\u63a5\u7684\u793a\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>String url = \"jdbc:mysql:\/\/localhost:3306\/your_database_name\";\nString user = \"your_username\";\nString password = \"your_password\";\n\nConnection connection = DriverManager.getConnection(url, user, password);<\/code><\/pre>\n<h3 id=\"3-%e5%89%b5%e5%bb%bastatement%e5%b0%8d%e8%b1%a1-UhxCfNcNDx\">3. \u5275\u5efaStatement\u5c0d\u8c61<\/h3>\n<p>\u4e00\u65e6\u5efa\u7acb\u4e86\u9023\u63a5\uff0c\u5c31\u53ef\u4ee5\u5275\u5efaStatement\u5c0d\u8c61\u4f86\u57f7\u884cSQL\u67e5\u8a62\uff1a<\/p>\n<pre><code>Statement statement = connection.createStatement();<\/code><\/pre>\n<h3 id=\"4-%e5%9f%b7%e8%a1%8csql%e6%9f%a5%e8%a9%a2-UhxCfNcNDx\">4. \u57f7\u884cSQL\u67e5\u8a62<\/h3>\n<p>\u4f7f\u7528Statement\u5c0d\u8c61\u57f7\u884cSQL\u67e5\u8a62\uff0c\u4e26\u7372\u53d6\u7d50\u679c\u96c6\uff1a<\/p>\n<pre><code>String sql = \"SELECT * FROM your_table_name\";\nResultSet resultSet = statement.executeQuery(sql);<\/code><\/pre>\n<h3 id=\"5-%e8%99%95%e7%90%86%e7%b5%90%e6%9e%9c%e9%9b%86-UhxCfNcNDx\">5. \u8655\u7406\u7d50\u679c\u96c6<\/h3>\n<p>\u904d\u6b77\u7d50\u679c\u96c6\u4ee5\u7372\u53d6\u67e5\u8a62\u7d50\u679c\uff1a<\/p>\n<pre><code>while (resultSet.next()) {\n    int id = resultSet.getInt(\"id\");\n    String name = resultSet.getString(\"name\");\n    System.out.println(\"ID: \" + id + \", Name: \" + name);\n}<\/code><\/pre>\n<h3 id=\"6-%e9%97%9c%e9%96%89%e9%80%a3%e6%8e%a5-UhxCfNcNDx\">6. \u95dc\u9589\u9023\u63a5<\/h3>\n<p>\u6700\u5f8c\uff0c\u8a18\u5f97\u95dc\u9589ResultSet\u3001Statement\u548cConnection\u4ee5\u91cb\u653e\u8cc7\u6e90\uff1a<\/p>\n<pre><code>resultSet.close();\nstatement.close();\nconnection.close();<\/code><\/pre>\n<h2 id=\"%e5%ae%8c%e6%95%b4%e4%bb%a3%e7%a2%bc%e7%a4%ba%e4%be%8b-UhxCfNcNDx\">\u5b8c\u6574\u4ee3\u78bc\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u5b8c\u6574\u7684Java\u4ee3\u78bc\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528JDBC\u9023\u63a5MySQL\u6578\u64da\u5eab\u4e26\u57f7\u884c\u67e5\u8a62\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.ResultSet;\nimport java.sql.Statement;\n\npublic class JdbcExample {\n    public static void main(String[] args) {\n        try {\n            Class.forName(\"com.mysql.cj.jdbc.Driver\");\n            String url = \"jdbc:mysql:\/\/localhost:3306\/your_database_name\";\n            String user = \"your_username\";\n            String password = \"your_password\";\n\n            Connection connection = DriverManager.getConnection(url, user, password);\n            Statement statement = connection.createStatement();\n            String sql = \"SELECT * FROM your_table_name\";\n            ResultSet resultSet = statement.executeQuery(sql);\n\n            while (resultSet.next()) {\n                int id = resultSet.getInt(\"id\");\n                String name = resultSet.getString(\"name\");\n                System.out.println(\"ID: \" + id + \", Name: \" + name);\n            }\n\n            resultSet.close();\n            statement.close();\n            connection.close();\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n}<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-UhxCfNcNDx\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u4f7f\u7528JDBC\u9023\u63a5MySQL\u6578\u64da\u5eab\u4e26\u57f7\u884c\u67e5\u8a62\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u7c21\u55ae\u6613\u7528\uff0c\u9084\u80fd\u5920\u6709\u6548\u5730\u8655\u7406\u6578\u64da\u5eab\u64cd\u4f5c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684Web\u61c9\u7528\u7a0b\u5e8f\u4f86\u8aaa\uff0cJDBC\u662f\u4e00\u500b\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u90e8\u7f72\u60a8\u7684Java\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0eJava Web\u958b\u767c\u4e2d\u7684P JDBC\u9023\u63a5MySQL\u6578\u64da\u5eab\uff0c\u63d0\u4f9b\u8a73\u7d30\u4ee3\u78bc\u793a\u4f8b\u8207\u5be6\u6230\u6280\u5de7\uff0c\u52a9\u4f60\u8f15\u9b06\u638c\u63e1\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-61839","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61839","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=61839"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61839\/revisions"}],"predecessor-version":[{"id":61840,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61839\/revisions\/61840"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61839"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61839"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61839"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}