{"id":61995,"date":"2024-10-13T15:23:15","date_gmt":"2024-10-13T07:23:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61995\/"},"modified":"2024-10-13T15:23:15","modified_gmt":"2024-10-13T07:23:15","slug":"java%e5%a6%82%e4%bd%95%e6%b8%85%e7%a9%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8-java%e6%80%8e%e9%ba%bc%e6%b8%85%e7%a9%ba%e4%b8%80%e5%80%8b%e6%96%87%e4%bb%b6%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61995\/","title":{"rendered":"Java\u5982\u4f55\u6e05\u7a7a\u6578\u64da\u5eab\u8868 (java\u600e\u9ebc\u6e05\u7a7a\u4e00\u500b\u6587\u4ef6\u6578\u64da\u5eab\u8868)"},"content":{"rendered":"<h1 id=\"java%e5%a6%82%e4%bd%95%e6%b8%85%e7%a9%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8-GlpxKSpKcl\">Java\u5982\u4f55\u6e05\u7a7a\u6578\u64da\u5eab\u8868<\/h1>\n<p>\u5728\u958b\u767c\u61c9\u7528\u7a0b\u5e8f\u6642\uff0c\u7d93\u5e38\u9700\u8981\u6e05\u7a7a\u6578\u64da\u5eab\u4e2d\u7684\u67d0\u4e9b\u8868\u683c\u3002\u9019\u53ef\u80fd\u662f\u56e0\u70ba\u6e2c\u8a66\u9700\u8981\u3001\u6578\u64da\u91cd\u7f6e\u6216\u5176\u4ed6\u539f\u56e0\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Java\u4f86\u6e05\u7a7a\u6578\u64da\u5eab\u8868\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e6%b8%85%e7%a9%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-GlpxKSpKcl\">\u6e05\u7a7a\u6578\u64da\u5eab\u8868\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6e05\u7a7a\u6578\u64da\u5eab\u8868\u901a\u5e38\u6709\u5169\u7a2e\u65b9\u6cd5\uff1a\u4f7f\u7528SQL\u8a9e\u53e5\u7684DELETE\u548cTRUNCATE\u3002\u9019\u5169\u8005\u4e4b\u9593\u6709\u4e00\u4e9b\u91cd\u8981\u7684\u5340\u5225\uff1a<\/p>\n<ul>\n<li><strong>DELETE\uff1a<\/strong>\u9019\u662f\u4e00\u500bDML\uff08\u6578\u64da\u64cd\u4f5c\u8a9e\u8a00\uff09\u8a9e\u53e5\uff0c\u53ef\u4ee5\u6839\u64da\u689d\u4ef6\u522a\u9664\u7279\u5b9a\u7684\u884c\u3002\u5982\u679c\u4e0d\u52a0\u689d\u4ef6\uff0c\u5247\u6703\u522a\u9664\u8868\u4e2d\u7684\u6240\u6709\u884c\uff0c\u4f46\u4e0d\u6703\u91cd\u7f6e\u81ea\u589e\u4e3b\u9375\u7684\u8a08\u6578\u5668\u3002<\/li>\n<li><strong>TRUNCATE\uff1a<\/strong>\u9019\u662f\u4e00\u500bDDL\uff08\u6578\u64da\u5b9a\u7fa9\u8a9e\u8a00\uff09\u8a9e\u53e5\uff0c\u6703\u522a\u9664\u8868\u4e2d\u7684\u6240\u6709\u884c\uff0c\u4e26\u91cd\u7f6e\u81ea\u589e\u4e3b\u9375\u7684\u8a08\u6578\u5668\u3002TRUNCATE\u901a\u5e38\u6bd4DELETE\u66f4\u5feb\uff0c\u56e0\u70ba\u5b83\u4e0d\u6703\u9010\u884c\u522a\u9664\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8java%e6%b8%85%e7%a9%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8-GlpxKSpKcl\">\u4f7f\u7528Java\u6e05\u7a7a\u6578\u64da\u5eab\u8868<\/h2>\n<p>\u5728Java\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528JDBC\uff08Java Database Connectivity\uff09\u4f86\u57f7\u884cSQL\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528JDBC\u6e05\u7a7a\u6578\u64da\u5eab\u8868\u7684\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e5%8a%a0%e8%bc%89jdbc%e9%a9%85%e5%8b%95-GlpxKSpKcl\">1. \u52a0\u8f09JDBC\u9a45\u52d5<\/h3>\n<p>\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u52a0\u8f09\u76f8\u61c9\u7684JDBC\u9a45\u52d5\u3002\u9019\u53d6\u6c7a\u65bc\u4f60\u4f7f\u7528\u7684\u6578\u64da\u5eab\u985e\u578b\uff0c\u4f8b\u5982MySQL\u3001PostgreSQL\u7b49\u3002<\/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-GlpxKSpKcl\">2. \u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\uff1a<\/p>\n<pre><code>Connection connection = DriverManager.getConnection(\"jdbc:mysql:\/\/localhost:3306\/your_database\", \"username\", \"password\");<\/code><\/pre>\n<h3 id=\"3-%e5%89%b5%e5%bb%bastatement%e5%b0%8d%e8%b1%a1-GlpxKSpKcl\">3. \u5275\u5efaStatement\u5c0d\u8c61<\/h3>\n<p>\u7136\u5f8c\uff0c\u6211\u5011\u9700\u8981\u5275\u5efa\u4e00\u500bStatement\u5c0d\u8c61\u4f86\u57f7\u884cSQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>Statement statement = connection.createStatement();<\/code><\/pre>\n<h3 id=\"4-%e5%9f%b7%e8%a1%8ctruncate%e6%88%96delete%e8%aa%9e%e5%8f%a5-GlpxKSpKcl\">4. \u57f7\u884cTRUNCATE\u6216DELETE\u8a9e\u53e5<\/h3>\n<p>\u73fe\u5728\uff0c\u6211\u5011\u53ef\u4ee5\u57f7\u884cTRUNCATE\u6216DELETE\u8a9e\u53e5\u4f86\u6e05\u7a7a\u8868\uff1a<\/p>\n<pre><code>\/\/ \u4f7f\u7528TRUNCATE\nstatement.executeUpdate(\"TRUNCATE TABLE your_table_name\");\n\n\/\/ \u6216\u8005\u4f7f\u7528DELETE\nstatement.executeUpdate(\"DELETE FROM your_table_name\");<\/code><\/pre>\n<h3 id=\"5-%e9%97%9c%e9%96%89%e9%80%a3%e6%8e%a5-GlpxKSpKcl\">5. \u95dc\u9589\u9023\u63a5<\/h3>\n<p>\u6700\u5f8c\uff0c\u8a18\u5f97\u95dc\u9589\u9023\u63a5\u4ee5\u91cb\u653e\u8cc7\u6e90\uff1a<\/p>\n<pre><code>statement.close();\nconnection.close();<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-GlpxKSpKcl\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u6e05\u7a7a\u6578\u64da\u5eab\u8868\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u5728\u57f7\u884c\u6e05\u7a7a\u64cd\u4f5c\u4e4b\u524d\u5099\u4efd\u91cd\u8981\u6578\u64da\uff0c\u4ee5\u514d\u6578\u64da\u4e1f\u5931\u3002<\/li>\n<li>TRUNCATE\u64cd\u4f5c\u7121\u6cd5\u88ab\u56de\u6efe\uff0c\u56e0\u6b64\u5728\u57f7\u884c\u4e4b\u524d\u8981\u8b39\u614e\u8003\u616e\u3002<\/li>\n<li>\u67d0\u4e9b\u6578\u64da\u5eab\u53ef\u80fd\u5c0dTRUNCATE\u64cd\u4f5c\u6709\u7279\u5b9a\u7684\u9650\u5236\uff0c\u4f8b\u5982\u5916\u9375\u7d04\u675f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-GlpxKSpKcl\">\u7d50\u8ad6<\/h2>\n<p>\u4f7f\u7528Java\u6e05\u7a7a\u6578\u64da\u5eab\u8868\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\uff0c\u53ea\u9700\u5e7e\u884c\u4ee3\u78bc\u5373\u53ef\u5b8c\u6210\u3002\u7121\u8ad6\u662f\u4f7f\u7528TRUNCATE\u9084\u662fDELETE\uff0c\u90fd\u9700\u8981\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u65b9\u6cd5\u3002\u5e0c\u671b\u672c\u6587\u80fd\u5e6b\u52a9\u4f60\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u5728Java\u4e2d\u6e05\u7a7a\u6578\u64da\u5eab\u8868\u3002<\/p>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u4f60\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u4f60\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528Java\u6e05\u7a7a\u6578\u64da\u5eab\u8868\uff0c\u5305\u62ec\u6b65\u9a5f\u548c\u793a\u4f8b\u4ee3\u78bc\uff0c\u8f15\u9b06\u7ba1\u7406\u60a8\u7684\u6578\u64da\u5eab\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-61995","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61995","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=61995"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61995\/revisions"}],"predecessor-version":[{"id":61996,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61995\/revisions\/61996"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61995"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61995"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61995"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}