{"id":75748,"date":"2024-10-16T00:53:16","date_gmt":"2024-10-15T16:53:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/75748\/"},"modified":"2024-10-16T00:53:16","modified_gmt":"2024-10-15T16:53:16","slug":"mysql-%e4%bf%9d%e5%ad%98jpg%e5%9c%96%e7%89%87%e7%9a%84%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e9%81%8e%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/75748\/","title":{"rendered":"MySQL \u4fdd\u5b58JPG\u5716\u7247\u7684\u5be6\u969b\u64cd\u4f5c\u904e\u7a0b"},"content":{"rendered":"<h1 id=\"mysql-%e4%bf%9d%e5%ad%98jpg%e5%9c%96%e7%89%87%e7%9a%84%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e9%81%8e%e7%a8%8b-WGLMRwaxjT\">MySQL \u4fdd\u5b58JPG\u5716\u7247\u7684\u5be6\u969b\u64cd\u4f5c\u904e\u7a0b<\/h1>\n<p>\u5728\u73fe\u4eca\u7684\u7db2\u7d61\u74b0\u5883\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u666e\u904d\uff0c\u5c24\u5176\u662f\u5728\u9700\u8981\u5b58\u5132\u5927\u91cf\u5716\u7247\u7684\u61c9\u7528\u4e2d\u3002MySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5b58\u5132\u548c\u7ba1\u7406\u5716\u7247\u6578\u64da\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728MySQL\u4e2d\u4fdd\u5b58JPG\u5716\u7247\u7684\u5be6\u969b\u64cd\u4f5c\u904e\u7a0b\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87mysql%e5%ad%98%e5%84%b2%e5%9c%96%e7%89%87-WGLMRwaxjT\">\u70ba\u4ec0\u9ebc\u9078\u64c7MySQL\u5b58\u5132\u5716\u7247<\/h2>\n<p>\u5728\u8003\u616e\u5982\u4f55\u5b58\u5132\u5716\u7247\u6642\uff0c\u958b\u767c\u8005\u901a\u5e38\u9762\u81e8\u5169\u7a2e\u9078\u64c7\uff1a\u5c07\u5716\u7247\u5b58\u5132\u5728\u6587\u4ef6\u7cfb\u7d71\u4e2d\uff0c\u6216\u5c07\u5176\u76f4\u63a5\u5b58\u5132\u5728\u6578\u64da\u5eab\u4e2d\u3002\u9078\u64c7MySQL\u5b58\u5132\u5716\u7247\u7684\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u4e00\u81f4\u6027\uff1a<\/strong>\u5c07\u5716\u7247\u8207\u5176\u4ed6\u6578\u64da\u5b58\u5132\u5728\u540c\u4e00\u6578\u64da\u5eab\u4e2d\uff0c\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/li>\n<li><strong>\u5b89\u5168\u6027\uff1a<\/strong>\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u66f4\u597d\u7684\u5b89\u5168\u6027\u63a7\u5236\uff0c\u80fd\u5920\u9650\u5236\u5c0d\u5716\u7247\u7684\u8a2a\u554f\u3002<\/li>\n<li><strong>\u5099\u4efd\u548c\u6062\u5fa9\uff1a<\/strong>\u4f7f\u7528\u6578\u64da\u5eab\u9032\u884c\u5099\u4efd\u548c\u6062\u5fa9\u64cd\u4f5c\u76f8\u5c0d\u7c21\u55ae\uff0c\u80fd\u5920\u66f4\u65b9\u4fbf\u5730\u7ba1\u7406\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"mysql%e4%b8%ad%e5%9c%96%e7%89%87%e7%9a%84%e5%ad%98%e5%84%b2%e6%96%b9%e5%bc%8f-WGLMRwaxjT\">MySQL\u4e2d\u5716\u7247\u7684\u5b58\u5132\u65b9\u5f0f<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u5716\u7247\u53ef\u4ee5\u4ee5\u5169\u7a2e\u4e3b\u8981\u65b9\u5f0f\u5b58\u5132\uff1a<\/p>\n<ul>\n<li><strong>BLOB\u985e\u578b\uff1a<\/strong>\u4f7f\u7528BLOB\uff08Binary Large Object\uff09\u6578\u64da\u985e\u578b\u4f86\u5b58\u5132\u4e8c\u9032\u5236\u6578\u64da\uff0c\u9069\u5408\u5b58\u5132\u5716\u7247\u3002<\/li>\n<li><strong>\u6587\u4ef6\u8def\u5f91\uff1a<\/strong>\u5c07\u5716\u7247\u5b58\u5132\u5728\u6587\u4ef6\u7cfb\u7d71\u4e2d\uff0c\u4e26\u5728\u6578\u64da\u5eab\u4e2d\u4fdd\u5b58\u5176\u8def\u5f91\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u5eab\u7684\u8ca0\u64d4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%93%8d%e4%bd%9c%e9%81%8e%e7%a8%8b-WGLMRwaxjT\">\u5be6\u969b\u64cd\u4f5c\u904e\u7a0b<\/h2>\n<h3 id=\"1-%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e8%a1%a8-WGLMRwaxjT\">1. \u5275\u5efa\u6578\u64da\u8868<\/h3>\n<p>\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5275\u5efa\u4e00\u500b\u6578\u64da\u8868\u4f86\u5b58\u5132\u5716\u7247\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u4e00\u500b\u5305\u542bBLOB\u5b57\u6bb5\u7684\u6578\u64da\u8868\u7684SQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>CREATE TABLE images (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    image_data LONGBLOB,\n    image_name VARCHAR(255)\n);<\/code><\/pre>\n<h3 id=\"2-%e6%8f%92%e5%85%a5%e5%9c%96%e7%89%87-WGLMRwaxjT\">2. \u63d2\u5165\u5716\u7247<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u5c07JPG\u5716\u7247\u63d2\u5165\u5230\u6578\u64da\u8868\u4e2d\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528PHP\u5c07\u5716\u7247\u63d2\u5165\u6578\u64da\u5eab\u7684\u793a\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>&lt;?php\n$mysqli = new mysqli(\"localhost\", \"username\", \"password\", \"database\");\n\nif ($mysqli-&gt;connect_error) {\n    die(\"Connection failed: \" . $mysqli-&gt;connect_error);\n}\n\n$imageName = 'example.jpg';\n$imageData = file_get_contents($imageName);\n\n$stmt = $mysqli-&gt;prepare(\"INSERT INTO images (image_data, image_name) VALUES (?, ?)\");\n$stmt-&gt;bind_param(\"bs\", $imageData, $imageName);\n$stmt-&gt;execute();\n\n$stmt-&gt;close();\n$mysqli-&gt;close();\n?&gt;<\/code><\/pre>\n<h3 id=\"3-%e6%9f%a5%e8%a9%a2%e5%9c%96%e7%89%87-WGLMRwaxjT\">3. \u67e5\u8a62\u5716\u7247<\/h3>\n<p>\u8981\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u5716\u7247\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT image_data, image_name FROM images WHERE id = ?;<\/code><\/pre>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528PHP\u67e5\u8a62\u4e26\u986f\u793a\u5716\u7247\u7684\u793a\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>&lt;?php\n$id = 1; \/\/ \u5047\u8a2d\u6211\u5011\u8981\u67e5\u8a62ID\u70ba1\u7684\u5716\u7247\n$stmt = $mysqli-&gt;prepare(\"SELECT image_data, image_name FROM images WHERE id = ?\");\n$stmt-&gt;bind_param(\"i\", $id);\n$stmt-&gt;execute();\n$stmt-&gt;bind_result($imageData, $imageName);\n$stmt-&gt;fetch();\n\nheader(\"Content-Type: image\/jpeg\");\necho $imageData;\n\n$stmt-&gt;close();\n$mysqli-&gt;close();\n?&gt;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-WGLMRwaxjT\">\u7e3d\u7d50<\/h2>\n<p>\u5728MySQL\u4e2d\u4fdd\u5b58JPG\u5716\u7247\u7684\u904e\u7a0b\u76f8\u5c0d\u7c21\u55ae\uff0c\u901a\u904e\u5275\u5efa\u5408\u9069\u7684\u6578\u64da\u8868\u3001\u63d2\u5165\u5716\u7247\u6578\u64da\u4ee5\u53ca\u67e5\u8a62\u5716\u7247\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u5716\u7247\u8cc7\u6e90\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u80fd\u5920\u63d0\u9ad8\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b89\u5168\u6027\uff0c\u9084\u80fd\u7c21\u5316\u5099\u4efd\u548c\u6062\u5fa9\u7684\u904e\u7a0b\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\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\u5e8f\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u9805\u76ee\u63d0\u4f9b\u7a69\u5b9a\u7684\u57fa\u790e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u4e2d\u4fdd\u5b58JPG\u5716\u7247\u7684\u5be6\u969b\u64cd\u4f5c\u904e\u7a0b\uff0c\u5f9e\u6578\u64da\u5eab\u8a2d\u8a08\u5230\u5716\u7247\u5b58\u5132\u7684\u6bcf\u4e00\u6b65\u8a73\u89e3\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-75748","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75748","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=75748"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75748\/revisions"}],"predecessor-version":[{"id":75749,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75748\/revisions\/75749"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=75748"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=75748"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=75748"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}