{"id":155833,"date":"2024-11-02T19:17:19","date_gmt":"2024-11-02T11:17:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/155833\/"},"modified":"2024-11-02T19:17:20","modified_gmt":"2024-11-02T11:17:20","slug":"%e9%98%b2%e6%ad%a2-sql-%e6%b3%a8%e5%85%a5%e6%bc%8f%e6%b4%9e%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/155833\/","title":{"rendered":"\u9632\u6b62 SQL \u6ce8\u5165\u6f0f\u6d1e\u7684\u65b9\u6cd5"},"content":{"rendered":"<h1 id=\"%e9%98%b2%e6%ad%a2-sql-%e6%b3%a8%e5%85%a5%e6%bc%8f%e6%b4%9e%e7%9a%84%e6%96%b9%e6%b3%95-hCMOJhyXws\">\u9632\u6b62 SQL \u6ce8\u5165\u6f0f\u6d1e\u7684\u65b9\u6cd5<\/h1>\n<p>SQL \u6ce8\u5165\uff08SQL Injection\uff09\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u7db2\u7d61\u653b\u64ca\u624b\u6cd5\uff0c\u653b\u64ca\u8005\u901a\u904e\u5728\u61c9\u7528\u7a0b\u5e8f\u7684 SQL \u67e5\u8a62\u4e2d\u63d2\u5165\u60e1\u610f\u4ee3\u78bc\uff0c\u4f86\u64cd\u63a7\u6578\u64da\u5eab\uff0c\u5f9e\u800c\u7372\u53d6\u654f\u611f\u4fe1\u606f\u6216\u7834\u58de\u6578\u64da\u5b8c\u6574\u6027\u3002\u96a8\u8457\u7db2\u7d61\u5b89\u5168\u5a01\u8105\u7684\u589e\u52a0\uff0c\u9632\u6b62 SQL \u6ce8\u5165\u6f0f\u6d1e\u8b8a\u5f97\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5e7e\u7a2e\u6709\u6548\u7684\u9632\u6b62 SQL \u6ce8\u5165\u7684\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"1-%e4%bd%bf%e7%94%a8%e9%a0%90%e8%99%95%e7%90%86%e8%aa%9e%e5%8f%a5%ef%bc%88prepared-statements%ef%bc%89-hCMOJhyXws\">1. \u4f7f\u7528\u9810\u8655\u7406\u8a9e\u53e5\uff08Prepared Statements\uff09<\/h2>\n<p>\u9810\u8655\u7406\u8a9e\u53e5\u662f\u4e00\u7a2e\u5c07 SQL \u67e5\u8a62\u8207\u6578\u64da\u5206\u958b\u7684\u6280\u8853\u3002\u9019\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u6709\u6548\u9632\u6b62 SQL \u6ce8\u5165\uff0c\u56e0\u70ba\u7528\u6236\u8f38\u5165\u7684\u6578\u64da\u4e0d\u6703\u76f4\u63a5\u5d4c\u5165\u5230 SQL \u67e5\u8a62\u4e2d\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 PHP \u548c MySQLi \u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n$mysqli = new mysqli(\"localhost\", \"user\", \"password\", \"database\");\n\n\/\/ \u4f7f\u7528\u9810\u8655\u7406\u8a9e\u53e5\n$stmt = $mysqli-&gt;prepare(\"SELECT * FROM users WHERE username = ? AND password = ?\");\n$stmt-&gt;bind_param(\"ss\", $username, $password);\n\n\/\/ \u8a2d\u7f6e\u53c3\u6578\u4e26\u57f7\u884c\n$username = $_POST['username'];\n$password = $_POST['password'];\n$stmt-&gt;execute();\n<\/code><\/pre>\n<h2 id=\"2-%e4%bd%bf%e7%94%a8-orm%ef%bc%88%e5%b0%8d%e8%b1%a1%e9%97%9c%e4%bf%82%e6%98%a0%e5%b0%84%ef%bc%89-hCMOJhyXws\">2. \u4f7f\u7528 ORM\uff08\u5c0d\u8c61\u95dc\u4fc2\u6620\u5c04\uff09<\/h2>\n<p>\u5c0d\u8c61\u95dc\u4fc2\u6620\u5c04\uff08ORM\uff09\u662f\u4e00\u7a2e\u5c07\u6578\u64da\u5eab\u64cd\u4f5c\u62bd\u8c61\u5316\u7684\u6280\u8853\uff0c\u901a\u904e\u4f7f\u7528 ORM \u6846\u67b6\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u907f\u514d\u76f4\u63a5\u7de8\u5beb SQL \u67e5\u8a62\uff0c\u5f9e\u800c\u964d\u4f4e SQL \u6ce8\u5165\u7684\u98a8\u96aa\u3002\u5e38\u898b\u7684 ORM \u6846\u67b6\u5305\u62ec Hibernate\uff08Java\uff09\u3001Entity Framework\uff08.NET\uff09\u548c Django ORM\uff08Python\uff09\u3002<\/p>\n<h2 id=\"3-%e8%bc%b8%e5%85%a5%e9%a9%97%e8%ad%89%e5%92%8c%e9%81%8e%e6%bf%be-hCMOJhyXws\">3. \u8f38\u5165\u9a57\u8b49\u548c\u904e\u6ffe<\/h2>\n<p>\u5c0d\u7528\u6236\u8f38\u5165\u9032\u884c\u9a57\u8b49\u548c\u904e\u6ffe\u662f\u9632\u6b62 SQL \u6ce8\u5165\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u958b\u767c\u8005\u61c9\u8a72\u78ba\u4fdd\u53ea\u63a5\u53d7\u7b26\u5408\u9810\u671f\u683c\u5f0f\u7684\u6578\u64da\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\uff0c\u61c9\u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f\u9032\u884c\u9a57\u8b49\uff1a<\/p>\n<pre><code>\nif (!filter_var($email, FILTER_VALIDATE_EMAIL)) {\n    die(\"\u7121\u6548\u7684\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\");\n}\n<\/code><\/pre>\n<h2 id=\"4-%e6%9c%80%e5%b0%8f%e5%8c%96%e6%95%b8%e6%93%9a%e5%ba%ab%e6%ac%8a%e9%99%90-hCMOJhyXws\">4. \u6700\u5c0f\u5316\u6578\u64da\u5eab\u6b0a\u9650<\/h2>\n<p>\u70ba\u4e86\u6e1b\u5c11 SQL \u6ce8\u5165\u653b\u64ca\u7684\u5f71\u97ff\uff0c\u61c9\u8a72\u70ba\u61c9\u7528\u7a0b\u5e8f\u4f7f\u7528\u7684\u6578\u64da\u5eab\u8cec\u6236\u8a2d\u7f6e\u6700\u5c0f\u6b0a\u9650\u3002\u9019\u610f\u5473\u8457\u8a72\u8cec\u6236\u61c9\u8a72\u53ea\u64c1\u6709\u57f7\u884c\u5fc5\u8981\u64cd\u4f5c\u7684\u6b0a\u9650\uff0c\u4f8b\u5982\u53ea\u5141\u8a31 SELECT \u548c INSERT\uff0c\u800c\u4e0d\u5141\u8a31 DROP \u6216 DELETE \u64cd\u4f5c\u3002<\/p>\n<h2 id=\"5-%e5%ae%9a%e6%9c%9f%e6%9b%b4%e6%96%b0%e5%92%8c%e4%bf%ae%e8%a3%9c-hCMOJhyXws\">5. \u5b9a\u671f\u66f4\u65b0\u548c\u4fee\u88dc<\/h2>\n<p>\u4fdd\u6301\u61c9\u7528\u7a0b\u5e8f\u548c\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u7684\u6700\u65b0\u72c0\u614b\u662f\u9632\u6b62 SQL \u6ce8\u5165\u7684\u91cd\u8981\u63aa\u65bd\u3002\u958b\u767c\u8005\u61c9\u5b9a\u671f\u6aa2\u67e5\u5b89\u5168\u66f4\u65b0\u548c\u4fee\u88dc\u7a0b\u5e8f\uff0c\u4e26\u53ca\u6642\u61c9\u7528\u9019\u4e9b\u66f4\u65b0\uff0c\u4ee5\u9632\u6b62\u5df2\u77e5\u6f0f\u6d1e\u88ab\u5229\u7528\u3002<\/p>\n<h2 id=\"6-%e4%bd%bf%e7%94%a8-web-%e6%87%89%e7%94%a8%e9%98%b2%e7%81%ab%e7%89%86%ef%bc%88waf%ef%bc%89-hCMOJhyXws\">6. \u4f7f\u7528 Web \u61c9\u7528\u9632\u706b\u7246\uff08WAF\uff09<\/h2>\n<p>Web \u61c9\u7528\u9632\u706b\u7246\u53ef\u4ee5\u5e6b\u52a9\u6aa2\u6e2c\u548c\u963b\u6b62 SQL \u6ce8\u5165\u653b\u64ca\u3002WAF \u901a\u904e\u5206\u6790\u9032\u5165\u61c9\u7528\u7a0b\u5e8f\u7684\u6d41\u91cf\uff0c\u8b58\u5225\u4e26\u904e\u6ffe\u6389\u53ef\u7591\u7684\u8acb\u6c42\uff0c\u5f9e\u800c\u63d0\u4f9b\u984d\u5916\u7684\u5b89\u5168\u5c64\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-hCMOJhyXws\">\u7e3d\u7d50<\/h2>\n<p>\u9632\u6b62 SQL \u6ce8\u5165\u6f0f\u6d1e\u662f\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u5b89\u5168\u7684\u95dc\u9375\u6b65\u9a5f\u3002\u901a\u904e\u4f7f\u7528\u9810\u8655\u7406\u8a9e\u53e5\u3001ORM\u3001\u8f38\u5165\u9a57\u8b49\u3001\u6700\u5c0f\u5316\u6578\u64da\u5eab\u6b0a\u9650\u3001\u5b9a\u671f\u66f4\u65b0\u548c\u4f7f\u7528 Web \u61c9\u7528\u9632\u706b\u7246\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u964d\u4f4e SQL \u6ce8\u5165\u7684\u98a8\u96aa\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u5b89\u5168\u6027\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a> \u4e5f\u662f\u4e00\u500b\u91cd\u8981\u7684\u8003\u91cf\uff0c\u56e0\u70ba\u9019\u4e9b\u670d\u52d9\u63d0\u4f9b\u5546\u901a\u5e38\u6703\u63d0\u4f9b\u984d\u5916\u7684\u5b89\u5168\u63aa\u65bd\u4f86\u4fdd\u8b77\u7528\u6236\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u9632\u6b62 SQL 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