{"id":187730,"date":"2024-11-11T16:42:19","date_gmt":"2024-11-11T08:42:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187730\/"},"modified":"2024-11-11T16:42:20","modified_gmt":"2024-11-11T08:42:20","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e9%9d%9e%e6%b3%95%e5%ad%97%e7%ac%a6%e8%bd%89%e7%be%a9%e5%95%8f%e9%a1%8c%e5%a6%82%e4%bd%95%e8%a7%a3%e6%b1%ba%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%9d%9e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187730\/","title":{"rendered":"\u6578\u64da\u5eab\u4e2d\u7684\u975e\u6cd5\u5b57\u7b26\u8f49\u7fa9\u554f\u984c\u5982\u4f55\u89e3\u6c7a\uff1f (\u6578\u64da\u5eab\u975e\u6cd5\u5b57\u7b26\u8f49\u7fa9)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e9%9d%9e%e6%b3%95%e5%ad%97%e7%ac%a6%e8%bd%89%e7%be%a9%e5%95%8f%e9%a1%8c%e5%a6%82%e4%bd%95%e8%a7%a3%e6%b1%ba%ef%bc%9f-hRTCLJkFNx\">\u6578\u64da\u5eab\u4e2d\u7684\u975e\u6cd5\u5b57\u7b26\u8f49\u7fa9\u554f\u984c\u5982\u4f55\u89e3\u6c7a\uff1f<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u81f3\u95dc\u91cd\u8981\u3002\u975e\u6cd5\u5b57\u7b26\u7684\u5b58\u5728\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u5eab\u7684\u6f0f\u6d1e\uff0c\u9032\u800c\u5f15\u767c\u5b89\u5168\u554f\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6578\u64da\u5eab\u4e2d\u7684\u975e\u6cd5\u5b57\u7b26\u8f49\u7fa9\u554f\u984c\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e9%9d%9e%e6%b3%95%e5%ad%97%e7%ac%a6%ef%bc%9f-hRTCLJkFNx\">\u4ec0\u9ebc\u662f\u975e\u6cd5\u5b57\u7b26\uff1f<\/h2>\n<p>\u975e\u6cd5\u5b57\u7b26\u662f\u6307\u5728\u6578\u64da\u5eab\u4e2d\u4e0d\u88ab\u5141\u8a31\u7684\u5b57\u7b26\uff0c\u9019\u4e9b\u5b57\u7b26\u53ef\u80fd\u6703\u5e72\u64fe\u6578\u64da\u7684\u6b63\u5e38\u8655\u7406\u3002\u4f8b\u5982\uff0c\u5728SQL\u67e5\u8a62\u4e2d\uff0c\u67d0\u4e9b\u5b57\u7b26\u5982\u55ae\u5f15\u865f\uff08&#8217;\uff09\u3001\u96d9\u5f15\u865f\uff08&#8221;\uff09\u3001\u53cd\u659c\u6760\uff08\uff09\u7b49\uff0c\u82e5\u672a\u6b63\u78ba\u8655\u7406\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4SQL\u6ce8\u5165\u653b\u64ca\u6216\u6578\u64da\u640d\u58de\u3002<\/p>\n<h2 id=\"%e9%9d%9e%e6%b3%95%e5%ad%97%e7%ac%a6%e7%9a%84%e5%bd%b1%e9%9f%bf-hRTCLJkFNx\">\u975e\u6cd5\u5b57\u7b26\u7684\u5f71\u97ff<\/h2>\n<ul>\n<li><strong>\u5b89\u5168\u6f0f\u6d1e\uff1a<\/strong>\u975e\u6cd5\u5b57\u7b26\u53ef\u80fd\u88ab\u5229\u7528\u4f86\u57f7\u884cSQL\u6ce8\u5165\u653b\u64ca\uff0c\u9019\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u7db2\u7d61\u653b\u64ca\u65b9\u5f0f\uff0c\u653b\u64ca\u8005\u53ef\u4ee5\u901a\u904e\u6ce8\u5165\u60e1\u610fSQL\u4ee3\u78bc\u4f86\u7372\u53d6\u654f\u611f\u6578\u64da\u3002<\/li>\n<li><strong>\u6578\u64da\u640d\u58de\uff1a<\/strong>\u5982\u679c\u975e\u6cd5\u5b57\u7b26\u672a\u88ab\u6b63\u78ba\u8655\u7406\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u640d\u58de\uff0c\u5f71\u97ff\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u53ef\u7528\u6027\u3002<\/li>\n<li><strong>\u6027\u80fd\u554f\u984c\uff1a<\/strong>\u4e0d\u7576\u7684\u5b57\u7b26\u8655\u7406\u53ef\u80fd\u6703\u5c0e\u81f4\u67e5\u8a62\u6027\u80fd\u4e0b\u964d\uff0c\u5f71\u97ff\u61c9\u7528\u7a0b\u5e8f\u7684\u97ff\u61c9\u901f\u5ea6\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%a7%a3%e6%b1%ba%e9%9d%9e%e6%b3%95%e5%ad%97%e7%ac%a6%e8%bd%89%e7%be%a9%e5%95%8f%e9%a1%8c-hRTCLJkFNx\">\u5982\u4f55\u89e3\u6c7a\u975e\u6cd5\u5b57\u7b26\u8f49\u7fa9\u554f\u984c<\/h2>\n<p>\u70ba\u4e86\u6709\u6548\u89e3\u6c7a\u6578\u64da\u5eab\u4e2d\u7684\u975e\u6cd5\u5b57\u7b26\u8f49\u7fa9\u554f\u984c\uff0c\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8%e5%8f%83%e6%95%b8%e5%8c%96%e6%9f%a5%e8%a9%a2-hRTCLJkFNx\">1. \u4f7f\u7528\u53c3\u6578\u5316\u67e5\u8a62<\/h3>\n<p>\u53c3\u6578\u5316\u67e5\u8a62\u662f\u4e00\u7a2e\u5b89\u5168\u7684\u7de8\u7a0b\u6280\u8853\uff0c\u53ef\u4ee5\u9632\u6b62SQL\u6ce8\u5165\u653b\u64ca\u3002\u901a\u904e\u4f7f\u7528\u53c3\u6578\u800c\u4e0d\u662f\u76f4\u63a5\u5c07\u7528\u6236\u8f38\u5165\u7684\u6578\u64da\u5d4c\u5165\u5230SQL\u67e5\u8a62\u4e2d\uff0c\u53ef\u4ee5\u81ea\u52d5\u8655\u7406\u975e\u6cd5\u5b57\u7b26\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>String sql = \"SELECT * FROM users WHERE username = ?\";\nPreparedStatement pstmt = connection.prepareStatement(sql);\npstmt.setString(1, userInput);\nResultSet rs = pstmt.executeQuery();<\/code><\/pre>\n<h3 id=\"2-%e5%ad%97%e7%ac%a6%e8%bd%89%e7%be%a9-hRTCLJkFNx\">2. \u5b57\u7b26\u8f49\u7fa9<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u624b\u52d5\u8f49\u7fa9\u975e\u6cd5\u5b57\u7b26\u3002\u9019\u53ef\u4ee5\u901a\u904e\u5728\u5b57\u7b26\u524d\u6dfb\u52a0\u53cd\u659c\u6760\u4f86\u5be6\u73fe\u3002\u4f8b\u5982\uff0c\u5728SQL\u4e2d\uff0c\u55ae\u5f15\u865f\u53ef\u4ee5\u8f49\u7fa9\u70ba&#8217;\uff0c\u4ee5\u907f\u514d\u88ab\u8aa4\u89e3\u70ba\u5b57\u7b26\u4e32\u7684\u7d50\u675f\uff1a<\/p>\n<pre><code>String safeInput = userInput.replace(\"'\", \"\\'\");<\/code><\/pre>\n<h3 id=\"3-%e6%95%b8%e6%93%9a%e9%a9%97%e8%ad%89-hRTCLJkFNx\">3. \u6578\u64da\u9a57\u8b49<\/h3>\n<p>\u5728\u5c07\u6578\u64da\u63d2\u5165\u6578\u64da\u5eab\u4e4b\u524d\uff0c\u61c9\u5c0d\u7528\u6236\u8f38\u5165\u9032\u884c\u9a57\u8b49\u3002\u9019\u53ef\u4ee5\u901a\u904e\u6b63\u5247\u8868\u9054\u5f0f\u4f86\u5be6\u73fe\uff0c\u78ba\u4fdd\u8f38\u5165\u7684\u6578\u64da\u7b26\u5408\u9810\u671f\u683c\u5f0f\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u7684\u9a57\u8b49\uff1a<\/p>\n<pre><code>String emailPattern = \"^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}$\";\nif (userInput.matches(emailPattern)) {\n    \/\/ \u6709\u6548\u7684\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\n}<\/code><\/pre>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8orm%e6%a1%86%e6%9e%b6-hRTCLJkFNx\">4. \u4f7f\u7528ORM\u6846\u67b6<\/h3>\n<p>\u4f7f\u7528\u5c0d\u8c61\u95dc\u4fc2\u6620\u5c04\uff08ORM\uff09\u6846\u67b6\u53ef\u4ee5\u7c21\u5316\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u4e26\u81ea\u52d5\u8655\u7406\u975e\u6cd5\u5b57\u7b26\u7684\u8f49\u7fa9\u554f\u984c\u3002\u5e38\u898b\u7684ORM\u6846\u67b6\u5982Hibernate\u548cEntity Framework\uff0c\u9019\u4e9b\u6846\u67b6\u80fd\u5920\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u4ea4\u4e92\uff0c\u6e1b\u5c11\u624b\u52d5\u8655\u7406\u7684\u9700\u8981\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-hRTCLJkFNx\">\u7d50\u8ad6<\/h2>\n<p>\u6578\u64da\u5eab\u4e2d\u7684\u975e\u6cd5\u5b57\u7b26\u8f49\u7fa9\u554f\u984c\u662f\u4e00\u500b\u4e0d\u5bb9\u5ffd\u8996\u7684\u5b89\u5168\u96b1\u60a3\u3002\u901a\u904e\u4f7f\u7528\u53c3\u6578\u5316\u67e5\u8a62\u3001\u5b57\u7b26\u8f49\u7fa9\u3001\u6578\u64da\u9a57\u8b49\u548cORM\u6846\u67b6\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e00\u554f\u984c\uff0c\u4fdd\u8b77\u6578\u64da\u5eab\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002\u96a8\u8457\u6280\u8853\u7684\u767c\u5c55\uff0c\u6301\u7e8c\u95dc\u6ce8\u6578\u64da\u5eab\u5b89\u5168\u6027\u5c07\u662f\u6bcf\u500b\u958b\u767c\u8005\u548c\u4f01\u696d\u7684\u91cd\u8981\u4efb\u52d9\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u8a0e\u5982\u4f55\u89e3\u6c7a\u6578\u64da\u5eab\u4e2d\u7684\u975e\u6cd5\u5b57\u7b26\u8f49\u7fa9\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u5b89\u5168\u6027\u8207\u5b8c\u6574\u6027\uff0c\u907f\u514d\u6f5b\u5728\u7684\u5b89\u5168\u98a8\u96aa\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-187730","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187730","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=187730"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187730\/revisions"}],"predecessor-version":[{"id":187731,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187730\/revisions\/187731"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187730"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187730"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187730"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}