{"id":61985,"date":"2024-10-13T15:18:16","date_gmt":"2024-10-13T07:18:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61985\/"},"modified":"2024-10-13T15:18:16","modified_gmt":"2024-10-13T07:18:16","slug":"java%e5%a6%82%e4%bd%95%e5%84%b2%e5%ad%98%e4%ba%8c%e9%80%b2%e5%88%b6%e6%b5%81%e6%96%bc%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-java%e5%a6%82%e4%bd%95%e5%b0%87%e4%ba%8c%e9%80%b2%e5%88%b6%e7%9a%84%e6%b5%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61985\/","title":{"rendered":"Java\u5982\u4f55\u5132\u5b58\u4e8c\u9032\u5236\u6d41\u65bc\u6578\u64da\u5eab\uff1f (java\u5982\u4f55\u5c07\u4e8c\u9032\u5236\u7684\u6d41\u4fdd\u5b58\u5230\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"java%e5%a6%82%e4%bd%95%e5%84%b2%e5%ad%98%e4%ba%8c%e9%80%b2%e5%88%b6%e6%b5%81%e6%96%bc%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-bXfEkbTEYr\">Java\u5982\u4f55\u5132\u5b58\u4e8c\u9032\u5236\u6d41\u65bc\u6578\u64da\u5eab\uff1f<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5f0f\u958b\u767c\u4e2d\uff0c\u5132\u5b58\u4e8c\u9032\u5236\u6578\u64da\uff08\u5982\u5716\u7247\u3001\u97f3\u983b\u6216\u8996\u983b\uff09\u65bc\u6578\u64da\u5eab\u4e2d\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002Java\u4f5c\u70ba\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u9019\u4e00\u529f\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Java\u5c07\u4e8c\u9032\u5236\u6d41\u4fdd\u5b58\u5230\u6578\u64da\u5eab\u4e2d\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e4%ba%8c%e9%80%b2%e5%88%b6%e6%95%b8%e6%93%9a%e7%9a%84%e6%a6%82%e5%bf%b5-bXfEkbTEYr\">\u4e8c\u9032\u5236\u6578\u64da\u7684\u6982\u5ff5<\/h2>\n<p>\u4e8c\u9032\u5236\u6578\u64da\u662f\u4ee50\u548c1\u7684\u5f62\u5f0f\u5b58\u5132\u7684\u4fe1\u606f\uff0c\u901a\u5e38\u7528\u65bc\u8868\u793a\u975e\u6587\u672c\u6578\u64da\u3002\u9019\u4e9b\u6578\u64da\u53ef\u4ee5\u662f\u5716\u7247\u3001\u97f3\u983b\u6587\u4ef6\u3001\u8996\u983b\u6587\u4ef6\u7b49\u3002\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u9019\u985e\u6578\u64da\u901a\u5e38\u4ee5BLOB\uff08Binary Large Object\uff09\u985e\u578b\u5b58\u5132\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88-bXfEkbTEYr\">\u6578\u64da\u5eab\u8a2d\u8a08<\/h2>\n<p>\u5728\u958b\u59cb\u7de8\u5bebJava\u4ee3\u78bc\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u8a2d\u8a08\u6578\u64da\u5eab\u8868\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u6578\u64da\u5eab\u8868\u8a2d\u8a08\u793a\u4f8b\uff0c\u7528\u65bc\u5132\u5b58\u4e8c\u9032\u5236\u6578\u64da\uff1a<\/p>\n<pre><code>CREATE TABLE media (\n    id INT PRIMARY KEY AUTO_INCREMENT,\n    name VARCHAR(255),\n    data BLOB\n);<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8java%e5%84%b2%e5%ad%98%e4%ba%8c%e9%80%b2%e5%88%b6%e6%b5%81-bXfEkbTEYr\">\u4f7f\u7528Java\u5132\u5b58\u4e8c\u9032\u5236\u6d41<\/h2>\n<p>\u5728Java\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528JDBC\uff08Java Database Connectivity\uff09\u4f86\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u4ee5\u4e0b\u662f\u5c07\u4e8c\u9032\u5236\u6d41\u5132\u5b58\u5230\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li>\u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5<\/li>\n<li>\u6e96\u5099SQL\u8a9e\u53e5<\/li>\n<li>\u8a2d\u7f6e\u4e8c\u9032\u5236\u6d41\u6578\u64da<\/li>\n<li>\u57f7\u884c\u66f4\u65b0\u64cd\u4f5c<\/li>\n<li>\u95dc\u9589\u9023\u63a5<\/li>\n<\/ul>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-bXfEkbTEYr\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Java\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5c07\u4e8c\u9032\u5236\u6d41\u5132\u5b58\u5230\u6578\u64da\u5eab\u4e2d\uff1a<\/p>\n<pre><code>import java.io.File;\nimport java.io.FileInputStream;\nimport java.io.IOException;\nimport java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.PreparedStatement;\nimport java.sql.SQLException;\n\npublic class SaveBinaryData {\n    public static void main(String[] args) {\n        String url = \"jdbc:mysql:\/\/localhost:3306\/your_database\";\n        String user = \"your_username\";\n        String password = \"your_password\";\n        String filePath = \"path\/to\/your\/file.jpg\";\n\n        try (Connection connection = DriverManager.getConnection(url, user, password);\n             FileInputStream inputStream = new FileInputStream(new File(filePath))) {\n\n            String sql = \"INSERT INTO media (name, data) VALUES (?, ?)\";\n            PreparedStatement statement = connection.prepareStatement(sql);\n            statement.setString(1, \"file.jpg\");\n            statement.setBinaryStream(2, inputStream, (int) new File(filePath).length());\n\n            int row = statement.executeUpdate();\n            if (row &gt; 0) {\n                System.out.println(\"A file was inserted successfully!\");\n            }\n\n        } catch (SQLException | IOException e) {\n            e.printStackTrace();\n        }\n    }\n}<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-bXfEkbTEYr\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u5132\u5b58\u4e8c\u9032\u5236\u6578\u64da\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li>\u6578\u64da\u5eab\u7684\u6027\u80fd\uff1a\u5132\u5b58\u5927\u91cf\u7684\u4e8c\u9032\u5236\u6578\u64da\u53ef\u80fd\u6703\u5f71\u97ff\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u56e0\u6b64\u5efa\u8b70\u6839\u64da\u5be6\u969b\u9700\u6c42\u9032\u884c\u8a2d\u8a08\u3002<\/li>\n<li>\u6578\u64da\u5eab\u7684\u5927\u5c0f\u9650\u5236\uff1a\u4e0d\u540c\u7684\u6578\u64da\u5eab\u5c0dBLOB\u7684\u5927\u5c0f\u6709\u4e0d\u540c\u7684\u9650\u5236\uff0c\u9700\u63d0\u524d\u4e86\u89e3\u3002<\/li>\n<li>\u6578\u64da\u7684\u5b89\u5168\u6027\uff1a\u78ba\u4fdd\u5728\u50b3\u8f38\u548c\u5132\u5b58\u904e\u7a0b\u4e2d\u5c0d\u6578\u64da\u9032\u884c\u52a0\u5bc6\uff0c\u4ee5\u4fdd\u8b77\u654f\u611f\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-bXfEkbTEYr\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528Java\u5c07\u4e8c\u9032\u5236\u6d41\u5132\u5b58\u5230\u6578\u64da\u5eab\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\uff0c\u901a\u904eJDBC\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u3002\u7121\u8ad6\u662f\u5132\u5b58\u5716\u7247\u3001\u97f3\u983b\u9084\u662f\u5176\u4ed6\u985e\u578b\u7684\u4e8c\u9032\u5236\u6578\u64da\uff0c\u6b63\u78ba\u7684\u6578\u64da\u5eab\u8a2d\u8a08\u548c\u4ee3\u78bc\u5be6\u73fe\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u82e5\u60a8\u9700\u8981\u9ad8\u6548\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5f0f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728Java\u4e2d\u5c07\u4e8c\u9032\u5236\u6d41\u5132\u5b58\u5230\u6578\u64da\u5eab\uff0c\u5305\u62ec\u4f7f\u7528PreparedStatement\u548cBlob\u985e\u578b\u7684\u5be6\u4f5c\u65b9\u6cd5\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-61985","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61985","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=61985"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61985\/revisions"}],"predecessor-version":[{"id":61986,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61985\/revisions\/61986"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}