{"id":62049,"date":"2024-10-13T15:45:15","date_gmt":"2024-10-13T07:45:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62049\/"},"modified":"2024-10-13T15:45:16","modified_gmt":"2024-10-13T07:45:16","slug":"java%e4%bd%bf%e7%94%a8jdbc%e9%80%a3%e6%8e%a5%e6%9c%ac%e6%a9%9f%e6%95%b8%e6%93%9a%e5%ba%ab-jdbc%e9%80%a3%e6%8e%a5%e6%9c%ac%e6%a9%9f%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62049\/","title":{"rendered":"Java\u4f7f\u7528JDBC\u9023\u63a5\u672c\u6a5f\u6578\u64da\u5eab (jdbc\u9023\u63a5\u672c\u6a5f\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"java%e4%bd%bf%e7%94%a8jdbc%e9%80%a3%e6%8e%a5%e6%9c%ac%e6%a9%9f%e6%95%b8%e6%93%9a%e5%ba%ab-PqprFUrxEE\">Java\u4f7f\u7528JDBC\u9023\u63a5\u672c\u6a5f\u6578\u64da\u5eab<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0cJava\u662f\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u800cJDBC\uff08Java Database Connectivity\uff09\u5247\u662fJava\u8207\u6578\u64da\u5eab\u4e4b\u9593\u7684\u6a4b\u6a11\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528JDBC\u9023\u63a5\u672c\u6a5f\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u9019\u4e00\u904e\u7a0b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afjdbc%ef%bc%9f-PqprFUrxEE\">\u4ec0\u9ebc\u662fJDBC\uff1f<\/h2>\n<p>JDBC\u662f\u4e00\u500bJava API\uff0c\u5141\u8a31Java\u61c9\u7528\u7a0b\u5e8f\u8207\u5404\u7a2e\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u7d44\u6a19\u6e96\u7684\u63a5\u53e3\u548c\u985e\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u901a\u904e\u9019\u4e9b\u63a5\u53e3\u548c\u985e\u4f86\u57f7\u884cSQL\u67e5\u8a62\u3001\u66f4\u65b0\u6578\u64da\u548c\u7ba1\u7406\u6578\u64da\u5eab\u9023\u63a5\u3002JDBC\u652f\u6301\u591a\u7a2e\u6578\u64da\u5eab\uff0c\u5305\u62ecMySQL\u3001PostgreSQL\u3001Oracle\u7b49\u3002<\/p>\n<h2 id=\"%e9%80%a3%e6%8e%a5%e6%9c%ac%e6%a9%9f%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%ad%a5%e9%a9%9f-PqprFUrxEE\">\u9023\u63a5\u672c\u6a5f\u6578\u64da\u5eab\u7684\u6b65\u9a5f<\/h2>\n<p>\u9023\u63a5\u672c\u6a5f\u6578\u64da\u5eab\u7684\u904e\u7a0b\u901a\u5e38\u5305\u62ec\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li>\u52a0\u8f09JDBC\u9a45\u52d5\u7a0b\u5e8f<\/li>\n<li>\u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5<\/li>\n<li>\u5275\u5efaStatement\u5c0d\u8c61<\/li>\n<li>\u57f7\u884cSQL\u67e5\u8a62<\/li>\n<li>\u8655\u7406\u7d50\u679c\u96c6<\/li>\n<li>\u95dc\u9589\u9023\u63a5<\/li>\n<\/ul>\n<h3 id=\"1-%e5%8a%a0%e8%bc%89jdbc%e9%a9%85%e5%8b%95%e7%a8%8b%e5%ba%8f-PqprFUrxEE\">1. \u52a0\u8f09JDBC\u9a45\u52d5\u7a0b\u5e8f<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u52a0\u8f09\u76f8\u61c9\u7684JDBC\u9a45\u52d5\u7a0b\u5e8f\u3002\u4ee5MySQL\u70ba\u4f8b\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\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-PqprFUrxEE\">2. \u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u60a8\u9700\u8981\u4f7f\u7528DriverManager\u4f86\u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5\u3002\u4ee5\u4e0b\u662f\u9023\u63a5\u672c\u6a5fMySQL\u6578\u64da\u5eab\u7684\u793a\u4f8b\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-PqprFUrxEE\">3. \u5275\u5efaStatement\u5c0d\u8c61<\/h3>\n<p>\u4e00\u65e6\u9023\u63a5\u6210\u529f\uff0c\u60a8\u53ef\u4ee5\u5275\u5efa\u4e00\u500bStatement\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-PqprFUrxEE\">4. \u57f7\u884cSQL\u67e5\u8a62<\/h3>\n<p>\u4f7f\u7528Statement\u5c0d\u8c61\uff0c\u60a8\u53ef\u4ee5\u57f7\u884cSQL\u67e5\u8a62\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-PqprFUrxEE\">5. \u8655\u7406\u7d50\u679c\u96c6<\/h3>\n<p>\u7d50\u679c\u96c6\u5305\u542b\u4e86\u67e5\u8a62\u7684\u7d50\u679c\uff0c\u60a8\u53ef\u4ee5\u901a\u904e\u8ff4\u5708\u4f86\u8655\u7406\u9019\u4e9b\u6578\u64da\uff1a<\/p>\n<pre><code>while (resultSet.next()) {\n    System.out.println(\"Column1: \" + resultSet.getString(\"column1_name\"));\n    System.out.println(\"Column2: \" + resultSet.getString(\"column2_name\"));\n}<\/code><\/pre>\n<h3 id=\"6-%e9%97%9c%e9%96%89%e9%80%a3%e6%8e%a5-PqprFUrxEE\">6. \u95dc\u9589\u9023\u63a5<\/h3>\n<p>\u6700\u5f8c\uff0c\u8a18\u5f97\u95dc\u9589ResultSet\u3001Statement\u548cConnection\uff0c\u4ee5\u91cb\u653e\u8cc7\u6e90\uff1a<\/p>\n<pre><code>resultSet.close();\nstatement.close();\nconnection.close();<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-PqprFUrxEE\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528JDBC\u9023\u63a5\u6578\u64da\u5eab\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fddJDBC\u9a45\u52d5\u7a0b\u5e8f\u5df2\u6b63\u78ba\u5b89\u88dd\u4e26\u5728classpath\u4e2d\u53ef\u7528\u3002<\/li>\n<li>\u4f7f\u7528try-catch-finally\u7d50\u69cb\u4f86\u8655\u7406\u7570\u5e38\u548c\u78ba\u4fdd\u8cc7\u6e90\u7684\u91cb\u653e\u3002<\/li>\n<li>\u6839\u64da\u9700\u8981\u4f7f\u7528PreparedStatement\u4f86\u9632\u6b62SQL\u6ce8\u5165\u653b\u64ca\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-PqprFUrxEE\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528JDBC\u9023\u63a5\u672c\u6a5f\u6578\u64da\u5eab\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\uff0c\u53ea\u9700\u9075\u5faa\u4e0a\u8ff0\u6b65\u9a5f\u5373\u53ef\u6210\u529f\u5be6\u73fe\u3002\u7121\u8ad6\u60a8\u662f\u958b\u767c\u5c0f\u578b\u61c9\u7528\u9084\u662f\u5927\u578b\u7cfb\u7d71\uff0c\u638c\u63e1JDBC\u7684\u4f7f\u7528\u90fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u6280\u80fd\u3002\u5982\u679c\u60a8\u9700\u8981\u66f4\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u548c\u7ba1\u7406\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a>\u4f86\u63d0\u5347\u60a8\u7684\u61c9\u7528\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528Java JDBC\u9023\u63a5\u672c\u6a5f\u6578\u64da\u5eab\uff0c\u5be6\u73fe\u6578\u64da\u64cd\u4f5c\u548c\u7ba1\u7406\uff0c\u63d0\u5347\u958b\u767c\u6548\u7387\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-62049","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62049","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=62049"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62049\/revisions"}],"predecessor-version":[{"id":62050,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62049\/revisions\/62050"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62049"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62049"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62049"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}