{"id":187832,"date":"2024-11-11T17:33:21","date_gmt":"2024-11-11T09:33:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187832\/"},"modified":"2024-11-11T17:33:22","modified_gmt":"2024-11-11T09:33:22","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%b0%8f%e6%95%b8%e9%bb%9e%e5%89%8d%e7%9a%840%e7%a5%9e%e7%a7%98%e6%b6%88%e5%a4%b1%ef%bc%8c%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%b3%95%e6%8f%ad%e7%a7%98-%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187832\/","title":{"rendered":"\u6578\u64da\u5eab\u4e2d\u5c0f\u6578\u9ede\u524d\u76840\u795e\u79d8\u6d88\u5931\uff0c\u89e3\u6c7a\u65b9\u6cd5\u63ed\u79d8 (\u6578\u64da\u5eab\u4e2d\u5c0f\u6578\u9ede\u524d0\u6c92\u6709\u4e86)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%b0%8f%e6%95%b8%e9%bb%9e%e5%89%8d%e7%9a%840%e7%a5%9e%e7%a7%98%e6%b6%88%e5%a4%b1%ef%bc%8c%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%b3%95%e6%8f%ad%e7%a7%98-EYYfJTChPb\">\u6578\u64da\u5eab\u4e2d\u5c0f\u6578\u9ede\u524d\u76840\u795e\u79d8\u6d88\u5931\uff0c\u89e3\u6c7a\u65b9\u6cd5\u63ed\u79d8<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u5b8c\u6574\u6027\u81f3\u95dc\u91cd\u8981\u3002\u7136\u800c\uff0c\u8a31\u591a\u958b\u767c\u8005\u5728\u8655\u7406\u6578\u64da\u6642\uff0c\u7d93\u5e38\u6703\u9047\u5230\u4e00\u500b\u4ee4\u4eba\u56f0\u60d1\u7684\u554f\u984c\uff1a\u5c0f\u6578\u9ede\u524d\u76840\u795e\u79d8\u6d88\u5931\u3002\u9019\u500b\u554f\u984c\u4e0d\u50c5\u5f71\u97ff\u6578\u64da\u7684\u986f\u793a\uff0c\u9084\u53ef\u80fd\u5c0e\u81f4\u8a08\u7b97\u932f\u8aa4\uff0c\u9032\u800c\u5f71\u97ff\u6574\u500b\u61c9\u7528\u7a0b\u5e8f\u7684\u904b\u884c\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u4e00\u554f\u984c\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e5%95%8f%e9%a1%8c%e7%9a%84%e6%a0%b9%e6%ba%90-EYYfJTChPb\">\u554f\u984c\u7684\u6839\u6e90<\/h2>\n<p>\u5c0f\u6578\u9ede\u524d\u76840\u6d88\u5931\u901a\u5e38\u8207\u6578\u64da\u985e\u578b\u7684\u9078\u64c7\u6709\u95dc\u3002\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u6578\u64da\u985e\u578b\u7684\u5b9a\u7fa9\u6703\u5f71\u97ff\u6578\u64da\u7684\u5b58\u5132\u548c\u986f\u793a\u65b9\u5f0f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u985e\u578b\u4e0d\u7576\uff1a<\/strong>\u5982\u679c\u5c07\u6578\u64da\u5b9a\u7fa9\u70ba\u6574\u6578\u985e\u578b\uff0c\u5247\u5c0f\u6578\u9ede\u524d\u76840\u6703\u88ab\u81ea\u52d5\u5ffd\u7565\u3002\u4f8b\u5982\uff0c\u5c07\u6578\u64da\u985e\u578b\u8a2d\u7f6e\u70baINT\u6642\uff0c\u6578\u64da\u5eab\u53ea\u6703\u5b58\u5132\u6578\u5b57\u7684\u5be6\u969b\u503c\uff0c\u800c\u4e0d\u6703\u4fdd\u7559\u524d\u5c0e0\u3002<\/li>\n<li><strong>\u683c\u5f0f\u5316\u554f\u984c\uff1a<\/strong>\u5728\u5f9e\u6578\u64da\u5eab\u63d0\u53d6\u6578\u64da\u6642\uff0c\u683c\u5f0f\u5316\u7684\u65b9\u5f0f\u4e5f\u6703\u5f71\u97ff\u986f\u793a\u3002\u5982\u679c\u4f7f\u7528\u4e86\u4e0d\u6b63\u78ba\u7684\u683c\u5f0f\u5316\u51fd\u6578\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u5c0f\u6578\u9ede\u524d\u76840\u88ab\u7701\u7565\u3002<\/li>\n<li><strong>\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\uff1a<\/strong>\u5728\u61c9\u7528\u7a0b\u5e8f\u4e2d\u8655\u7406\u6578\u64da\u6642\uff0c\u67d0\u4e9b\u908f\u8f2f\u53ef\u80fd\u6703\u5c0e\u81f4\u524d\u5c0e0\u7684\u4e1f\u5931\u3002\u4f8b\u5982\uff0c\u5c07\u6578\u64da\u8f49\u63db\u70ba\u5b57\u7b26\u4e32\u6642\uff0c\u53ef\u80fd\u6703\u4f7f\u7528\u4e0d\u7576\u7684\u8f49\u63db\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-EYYfJTChPb\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u70ba\u4e86\u89e3\u6c7a\u5c0f\u6578\u9ede\u524d0\u6d88\u5931\u7684\u554f\u984c\uff0c\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e6%ad%a3%e7%a2%ba%e9%81%b8%e6%93%87%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-EYYfJTChPb\">1. \u6b63\u78ba\u9078\u64c7\u6578\u64da\u985e\u578b<\/h3>\n<p>\u5728\u5275\u5efa\u6578\u64da\u8868\u6642\uff0c\u61c9\u6839\u64da\u5be6\u969b\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u3002\u5982\u679c\u9700\u8981\u4fdd\u7559\u524d\u5c0e0\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5b57\u7b26\u4e32\u985e\u578b\uff08\u5982VARCHAR\uff09\u4f86\u5b58\u5132\u6578\u64da\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\uff0c\u7121\u8ad6\u662f\u6578\u5b57\u9084\u662f\u5b57\u6bcd\u90fd\u80fd\u6b63\u78ba\u986f\u793a\u3002<\/p>\n<pre><code>CREATE TABLE example (\n    id INT PRIMARY KEY,\n    value VARCHAR(10) NOT NULL\n);\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e6%a0%bc%e5%bc%8f%e5%8c%96%e5%87%bd%e6%95%b8-EYYfJTChPb\">2. \u4f7f\u7528\u683c\u5f0f\u5316\u51fd\u6578<\/h3>\n<p>\u5728\u5f9e\u6578\u64da\u5eab\u63d0\u53d6\u6578\u64da\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u683c\u5f0f\u5316\u51fd\u6578\u4f86\u78ba\u4fdd\u5c0f\u6578\u9ede\u524d\u76840\u4e0d\u6703\u6d88\u5931\u3002\u4f8b\u5982\uff0c\u5728MySQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528LPAD\u51fd\u6578\u4f86\u586b\u5145\u524d\u5c0e0\uff1a<\/p>\n<pre><code>SELECT LPAD(value, 5, '0') AS formatted_value FROM example;\n<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u5373\u4f7f\u539f\u59cb\u6578\u64da\u70ba\u201c123\u201d\uff0c\u4e5f\u6703\u986f\u793a\u70ba\u201c00123\u201d\u3002<\/p>\n<h3 id=\"3-%e6%87%89%e7%94%a8%e7%a8%8b%e5%ba%8f%e9%82%8f%e8%bc%af%e7%9a%84%e8%aa%bf%e6%95%b4-EYYfJTChPb\">3. \u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\u7684\u8abf\u6574<\/h3>\n<p>\u5728\u61c9\u7528\u7a0b\u5e8f\u4e2d\u8655\u7406\u6578\u64da\u6642\uff0c\u61c9\u6ce8\u610f\u4f7f\u7528\u6b63\u78ba\u7684\u8f49\u63db\u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u5728Java\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528String.format()\u65b9\u6cd5\u4f86\u683c\u5f0f\u5316\u6578\u5b57\uff0c\u4fdd\u7559\u524d\u5c0e0\uff1a<\/p>\n<pre><code>String formattedValue = String.format(\"%05d\", value);\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-EYYfJTChPb\">\u7d50\u8ad6<\/h2>\n<p>\u5c0f\u6578\u9ede\u524d\u76840\u6d88\u5931\u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\uff0c\u4f46\u901a\u904e\u6b63\u78ba\u7684\u6578\u64da\u985e\u578b\u9078\u64c7\u3001\u683c\u5f0f\u5316\u51fd\u6578\u7684\u4f7f\u7528\u4ee5\u53ca\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\u7684\u8abf\u6574\uff0c\u53ef\u4ee5\u6709\u6548\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u4fdd\u6301\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u5b8c\u6574\u6027\u5c0d\u65bc\u4efb\u4f55\u6578\u64da\u9a45\u52d5\u7684\u61c9\u7528\u7a0b\u5e8f\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u6578\u64da\u5eab\u4e2d\u5c0f\u6578\u9ede\u524d0\u6d88\u5931\u7684\u539f\u56e0\u53ca\u89e3\u6c7a\u65b9\u6cd5\uff0c\u5e6b\u52a9\u60a8\u6709\u6548\u7ba1\u7406\u6578\u64da\u986f\u793a\u554f\u984c\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-187832","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187832","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=187832"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187832\/revisions"}],"predecessor-version":[{"id":187833,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187832\/revisions\/187833"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187832"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187832"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187832"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}