{"id":3773,"date":"2025-06-14T00:00:09","date_gmt":"2025-06-13T16:00:09","guid":{"rendered":"https:\/\/www.wunen.com\/index.php\/2025\/06\/14\/%e5%9f%ba%e4%ba%8espringbootvue%e7%9a%84%e5%9b%be%e4%b9%a6%e9%98%85%e8%af%bb%e5%88%86%e4%ba%ab%e7%b3%bb%e7%bb%9f-1ls3u\/"},"modified":"2025-06-14T00:00:09","modified_gmt":"2025-06-13T16:00:09","slug":"%e5%9f%ba%e4%ba%8espringbootvue%e7%9a%84%e5%9b%be%e4%b9%a6%e9%98%85%e8%af%bb%e5%88%86%e4%ba%ab%e7%b3%bb%e7%bb%9f-1ls3u","status":"publish","type":"post","link":"http:\/\/www.wunen.com\/index.php\/2025\/06\/14\/%e5%9f%ba%e4%ba%8espringbootvue%e7%9a%84%e5%9b%be%e4%b9%a6%e9%98%85%e8%af%bb%e5%88%86%e4%ba%ab%e7%b3%bb%e7%bb%9f-1ls3u\/","title":{"rendered":"\u57fa\u4e8eSpringboot+Vue\u7684\u56fe\u4e66\u9605\u8bfb\u5206\u4eab\u7cfb\u7edf 1ls3u"},"content":{"rendered":"<div class=\"article_content clearfix\" id=\"article_content\">\n <link href=\"https:\/\/csdnimg.cn\/release\/blogv2\/dist\/mdeditor\/css\/editerView\/kdoc_html_views-1a98987dfd.css\" rel=\"stylesheet\"\/>\n <link href=\"https:\/\/csdnimg.cn\/release\/blogv2\/dist\/mdeditor\/css\/editerView\/ck_htmledit_views-704d5b9767.css\" rel=\"stylesheet\"\/>\n<div class=\"markdown_views prism-atom-one-light\" id=\"content_views\">\n  <svg style=\"display: none;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n   <path d=\"M5,0 0,2.5 5,5z\" id=\"raphael-marker-block\" stroke-linecap=\"round\" style=\"-webkit-tap-highlight-color: rgba(0, 0, 0, 0);\">\n   <\/path>\n  <\/svg><\/p>\n<div class=\"toc\">\n<h4>\n    \u76ee\u5f55<br \/>\n   <\/h4>\n<ul>\n<li>\n<ul>\n<li>\n       <a href=\"#_1\" rel=\"nofollow\"><br \/>\n        \u672c\u7cfb\u7edf\u4ecb\u7ecd<br \/>\n       <\/a>\n      <\/li>\n<li>\n       <a href=\"#_13\" rel=\"nofollow\"><br \/>\n        \u5f00\u53d1\u601d\u8def<br \/>\n       <\/a>\n      <\/li>\n<li>\n       <a href=\"#_27\" rel=\"nofollow\"><br \/>\n        \u90e8\u5206\u6548\u679c\u5b9e\u73b0\u622a\u56fe<br \/>\n       <\/a>\n      <\/li>\n<li>\n       <a href=\"#_41\" rel=\"nofollow\"><br \/>\n        \u5f00\u53d1\u6280\u672f\u4ecb\u7ecd<br \/>\n       <\/a>\n      <\/li>\n<li>\n       <a href=\"#_63\" rel=\"nofollow\"><br \/>\n        \u6838\u5fc3\u4ee3\u7801\u53c2\u8003\u793a\u4f8b<br \/>\n       <\/a>\n      <\/li>\n<li>\n       <a href=\"#__149\" rel=\"nofollow\"><br \/>\n        \u56fe\u4e66\u9605\u8bfb\u5206\u4eab\u7cfb\u7edf \u8bba\u6587\u63d0\u7eb2\u53c2\u8003<br \/>\n       <\/a>\n      <\/li>\n<li>\n       <a href=\"#_168\" rel=\"nofollow\"><br \/>\n        \u6e90\u7801\u83b7\u53d6\u8be6\u7ec6\u89c6\u9891\u6f14\u793a\uff1a\u6587\u7ae0\u5e95\u90e8\u83b7\u53d6\u535a\u4e3b\u8054\u7cfb\u65b9\u5f0f\uff01\uff01\uff01\uff01<br \/>\n       <\/a>\n      <\/li>\n<li>\n       <a href=\"#_175\" rel=\"nofollow\"><br \/>\n        \u7cfb\u7edf\u6d4b\u8bd5<br \/>\n       <\/a>\n      <\/li>\n<\/ul>\n<\/li>\n<\/ul><\/div>\n<\/p>\n<h3>\n   <a id=\"_1\"><br \/>\n   <\/a><br \/>\n   \u672c\u7cfb\u7edf\u4ecb\u7ecd<br \/>\n  <\/h3>\n<p>\n   \u5f00\u53d1\u5de5\u5177\uff1aIntelliJ IDEA\uff0cVScode\uff1b\u6570\u636e\u5e93\u7ba1\u7406\u8f6f\u4ef6\uff1aNavicat\uff1b\u670d\u52a1\u5668\u8fd0\u884c\u5e73\u53f0\uff1aTomcat\uff1b\u5f00\u53d1\u6280\u672f\u6846\u67b6\uff1aMyBatis\uff0cSpring Boot\uff0cVue\uff1b\u5ba2\u6237\u7aef\u8fd0\u884c\u5e73\u53f0\uff1aGoogle\u7b49\u3002<br \/>\n   <br \/>\n   \u57fa\u4e8eSpringBoot\u548cVue\u4f5c\u4e3a\u73b0\u4ee3Web\u5f00\u53d1\u4e2d\u5e38\u7528\u7684\u6280\u672f\u6808\uff0c\u4e24\u8005\u901a\u8fc7\u7cfb\u7edf\u529f\u80fd\u7684\u4f18\u5316\u8bbe\u8ba1\u548c\u524d\u540e\u7aef\u6280\u672f\u7684\u5408\u7406\u5e94\u7528\uff0c\u80fd\u591f\u4e3a\u7cfb\u7edf\u7684\u67b6\u6784\u8bbe\u8ba1\u3001\u529f\u80fd\u5b9e\u73b0\u548c\u6027\u80fd\u63d0\u5347\u63d0\u4f9b\u5f3a\u6709\u529b\u7684\u652f\u6301\u3002<br \/>\n   <br \/>\n   \uff081\uff09\u9996\u5148\u901a\u8fc7\u67e5\u9605\u56fd\u5185\u5916\u5bf9\u672c\u7cfb\u7edf\u7684\u7814\u7a76\uff0c\u9009\u51fa\u76f8\u5e94\u7684\u6280\u672f\u65b9\u6848<br \/>\n   <br \/>\n   \uff082\uff09\u8fdb\u884c\u9700\u6c42\u5206\u6790\uff0c\u89c4\u5212\u5404\u6a21\u5757\u529f\u80fd\uff0c\u5e76\u753b\u51fa\u6d41\u7a0b\u56fe\u3002<br \/>\n   <br \/>\n   \uff083\uff09\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u5206\u6790\u548c\u8bbe\u8ba1\uff0c\u638c\u63e1\u5bf9\u7cfb\u7edf\u4e2d\u6240\u9700\u6570\u636e\u7684\u64cd\u4f5c\u548c\u5b58\u50a8\u7684\u5b9e\u73b0\u8fc7\u7a0b\uff0c\u5e76\u5b66\u4e60\u7814\u7a76\u591a\u8868\u5173\u8054\u65b9\u6cd5\u3002<br \/>\n   <br \/>\n   \uff084\uff09\u5b66\u4e60\u5e76\u638c\u63e1\u57fa\u4e8eSpring Boot\u3001MySQL\u3001Vue\u7b49\u76f8\u5173\u5f00\u53d1\u6280\u672f\u3002<br \/>\n   <br \/>\n   JDK\u7248\u672c\u4e0d\u9650,\u6700\u4f4ejdk1.8<br \/>\n   <br \/>\n   \u6570\u636e\u5e93\uff1amysql (\u7248\u672c\u4e0d\u9650)<br \/>\n   <br \/>\n   \u6280\u672f\u6808:JAVA+Mysql+Springboot+Vue+Maven<br \/>\n   <br \/>\n   \u6570\u636e\u5e93\u5de5\u5177\uff1aNavicat for mysql\u7b49<br \/>\n   <br \/>\n   \u5f00\u53d1\u8bed\u8a00\uff1aJava \u6846\u67b6\u652f\u6301\uff1a<br \/>\n   <font color=\"red\"><br \/>\n    springboot\/ssm\/springcloud \u5fae\u670d\u52a1\u5206\u5e03\u5f0f<br \/>\n   <\/font>\n  <\/p>\n<h3>\n   <a id=\"_13\"><br \/>\n   <\/a><br \/>\n   \u5f00\u53d1\u601d\u8def<br \/>\n  <\/h3>\n<p>\n   \u4e3a\u4e86\u5e2e\u52a9\u7528\u6237\u66f4\u597d\u7684\u4e86\u89e3\u548c\u7406\u89e3\u56fe\u4e66\u9605\u8bfb\u5206\u4eab\u7cfb\u7edf \u7684\u5f00\u53d1\u6d41\u7a0b\u4e0e\u76f8\u5173\u5185\u5bb9\uff0c\u672c\u6587\u5c06\u901a\u8fc7\u516d\u4e2a\u7ae0\u8282\u8fdb\u884c\u5185\u5bb9\u9610\u8ff0\u3002<br \/>\n   <br \/>\n   \u7b2c\u4e00\u7ae0\uff1a\u63cf\u8ff0\u4e86\u7cfb\u7edf\u7684\u5f00\u53d1\u80cc\u666f\uff0c\u7a0b\u5e8f\u8fd0\u7528\u4e8e\u73b0\u5b9e\u751f\u6d3b\u7684\u76ee\u7684\u4e0e\u610f\u4e49\uff0c\u4ee5\u53ca\u7a0b\u5e8f\u6587\u6863\u7684\u7ed3\u6784\u5b89\u6392\u4fe1\u606f\uff1b<br \/>\n   <br \/>\n   \u7b2c\u4e8c\u7ae0\uff1a\u7a0b\u5e8f\u5f00\u53d1\u6d89\u53ca\u5230\u7684\u6280\u672f\uff0c\u7a0b\u5e8f\u5f00\u53d1\u4f7f\u7528\u7684\u6570\u636e\u5b58\u50a8\u5de5\u5177\u7b49\u4fe1\u606f\uff1b<br \/>\n   <br \/>\n   \u7b2c\u4e09\u7ae0\uff1a\u63cf\u8ff0\u4e86\u7a0b\u5e8f\u7740\u624b\u8fdb\u884c\u5f00\u53d1\u65f6\uff0c\u4f1a\u9762\u4e34\u7684\u53ef\u884c\u6027\u95ee\u9898\uff0c\u5e76\u5bf9\u7a0b\u5e8f\u529f\u80fd\u4ee5\u53ca\u6027\u80fd\u8981\u6c42\u8fdb\u884c\u63cf\u8ff0\uff1b<br \/>\n   <br \/>\n   \u7b2c\u56db\u7ae0\uff1a\u63cf\u8ff0\u4e86\u7a0b\u5e8f\u5927\u529f\u80fd\u6a21\u5757\u4e0b\u7684\u529f\u80fd\u7ec6\u5206\u4fe1\u606f\uff0c\u4ee5\u53ca\u5b58\u50a8\u7a0b\u5e8f\u6570\u636e\u7684\u6570\u636e\u5e93\u8868\u6587\u4ef6\u7ed3\u6784\u7684\u8bbe\u8ba1\u4fe1\u606f\u7b49\uff1b<br \/>\n   <br \/>\n   \u7b2c\u4e94\u7ae0\uff1a\u63cf\u8ff0\u4e86\u7a0b\u5e8f\u7684\u529f\u80fd\u5b9e\u73b0\u754c\u9762\u7684\u5185\u5bb9\uff0c\u4e5f\u5bf9\u7a0b\u5e8f\u64cd\u4f5c\u4eba\u5458\u64cd\u4f5c\u7684\u90e8\u5206\u529f\u80fd\u8fdb\u884c\u4e86\u63cf\u8ff0\uff1b<br \/>\n   <br \/>\n   \u7b2c\u516d\u7ae0\uff1a\u63cf\u8ff0\u4e86\u7a0b\u5e8f\u529f\u80fd\u7684\u6d4b\u8bd5\u5185\u5bb9\uff0c\u5e76\u4ecb\u7ecd\u4e86\u7cfb\u7edf\u6d4b\u8bd5\u7684\u6982\u5ff5\u4e0e\u65b9\u6cd5\u3002<br \/>\n   <br \/>\n   \uff081\uff09\u5199\u5b9e\u4f53\u7c7b\uff0c\u5b9a\u4e49\u5bf9\u8c61\u7684\u5c5e\u6027\u53ef\u4ee5\u53c2\u7167\u6570\u636e\u5e93\u4e2d\u8868\u7684\u5b57\u6bb5\u6765\u8bbe\u7f6e\u3002<br \/>\n   <br \/>\n   \uff082\uff09\u5199Mapper.xml\uff08Mybatis\uff09\uff0c\u5176\u4e2d\u5b9a\u4e49\u4f60\u7684\u529f\u80fd\uff0c\u5bf9\u5e94\u8981\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u7684\u90a3\u4e9b\u64cd\u4f5c\uff0c\u6bd4\u5982insert\u3001selectAll\u3001selectByKey\u3001delete\u3001update\u7b49\u3002<br \/>\n   <br \/>\n   \uff083\uff09\u5199Dao.java\uff0c\u505a\u6570\u636e\u6301\u4e45\u5c42\u7684\u5de5\u4f5c\uff0c\u8d1f\u8d23\u4e0e\u6570\u636e\u5e93\u8fdb\u884c\u8054\u7edc\u7684\u4e00\u4e9b\u4efb\u52a1\u90fd\u5c01\u88c5\u5728\u6b64\uff0c\u53ef\u4ee5\u5728\u6a21\u5757\u4e2d\u8c03\u7528\u6b64\u63a5\u53e3\u6765\u8fdb\u884c\u6570\u636e\u4e1a\u52a1\u7684\u5904\u7406\u3002<br \/>\n   <br \/>\n   \uff084\uff09\u5199Service.java\uff0c\u4e3a\u63a7\u5236\u5c42\u63d0\u4f9b\u670d\u52a1\uff0c\u63a5\u53d7\u63a7\u5236\u5c42\u7684\u53c2\u6570\uff0c\u5b8c\u6210\u76f8\u5e94\u7684\u529f\u80fd\uff0c\u5e76\u8fd4\u56de\u7ed9\u63a7\u5236\u5c42\u3002<br \/>\n   <br \/>\n   \uff085\uff09\u5199Controller.java\uff0c\u8fde\u63a5\u9875\u9762\u8bf7\u6c42\u548c\u670d\u52a1\u5c42\uff0c\u83b7\u53d6\u9875\u9762\u8bf7\u6c42\u7684\u53c2\u6570\uff0c\u901a\u8fc7\u81ea\u52a8\u88c5\u914d\uff0c\u6620\u5c04\u4e0d\u540c\u7684URL\u5230\u76f8\u5e94\u7684\u5904\u7406\u51fd\u6570\uff0c\u5e76\u83b7\u53d6\u53c2\u6570\uff0c\u5bf9\u53c2\u6570\u8fdb\u884c\u5904\u7406\uff0c\u4e4b\u540e\u4f20\u7ed9\u670d\u52a1\u5c42\u3002\n  <\/p>\n<h3>\n   <a id=\"_27\"><br \/>\n   <\/a><br \/>\n   \u90e8\u5206\u6548\u679c\u5b9e\u73b0\u622a\u56fe<br \/>\n  <\/h3>\n<\/p>\n<h3>\n   <a id=\"_41\"><br \/>\n   <\/a><br \/>\n   \u5f00\u53d1\u6280\u672f\u4ecb\u7ecd<br \/>\n  <\/h3>\n<p>\n   (1) \u4f7f\u7528 Element-ui\u3001Java\u4f5c\u4e3a\u5f00\u53d1\u8bed\u8a00\uff1b<br \/>\n   <br \/>\n   (2) \u4f7f\u7528Springboot\u5f00\u53d1\u6846\u67b6\u8fdb\u884c\u7cfb\u7edf\u5f00\u53d1\uff1b<br \/>\n   <br \/>\n   (3) \u4f7f\u7528WebStorm\u3001Intellij IDEA\u4f5c\u4e3a\u5f00\u53d1\u73af\u5883\uff1b<br \/>\n   <br \/>\n   (4) \u4f7f\u7528Navicat Premium\u8fdb\u884c\u6570\u636e\u5b58\u653e\uff0c\u6570\u636e\u5e93\u8fd0\u884c\u4e8e\u672c\u5730\uff1b<br \/>\n   <br \/>\n   (5) \u56fe\u4e66\u9605\u8bfb\u5206\u4eab\u7cfb\u7edf \u7cfb\u7edf\u7528\u6237\u89d2\u8272\u5206\u914d\uff1b<br \/>\n   <br \/>\n   (6) \u7cfb\u7edf\u91c7\u7528B\/S\u67b6\u6784\u8bbe\u8ba1\uff1b<br \/>\n   <br \/>\n   MVC\u6846\u67b6<br \/>\n   <br \/>\n   spring\u6846\u67b6\u5305\u542bspringmvc\u6846\u67b6\uff0cmvc\u662f\u4e00\u79cd\u8bbe\u8ba1\u6a21\u5f0f\uff0cmodel\u8868\u793a\u5b9e\u4f53\u5c42\uff0c\u89c6\u56fe\u7528V\u8868\u793a\uff0c\u7528\u6765\u8868\u793avue\u9875\u9762\uff0c\u63a7\u5236\u5668\u7528C\u8868\u793a\uff0c\u7528\u4e8evue\u9875\u9762\u4f20\u9012\u6570\u636e\u5230\u63a7\u5236\u5668\u5f53\u4e2d\u3002\u5904\u7406\u8bf7\u6c42\u548c\u6570\u636e\u5904\u7406\u3002springmvc\u6846\u67b6\u7684\u6838\u5fc3\u7c7b\u662fdispatcherServlet\uff0c\u5c06\u8bf7\u6c42\u8fdb\u884c\u62e6\u622a\uff0c\u5c06\u8bf7\u6c42\u8f6c\u79fb\u5230\u9002\u914d\u5668\u5f53\u4e2d\u8fdb\u884c\u5904\u7406\uff0c\u5bfb\u6c42\u5408\u9002\u7684\u65b9\u6cd5\u5bf9\u7528\u6237\u4ece\u9875\u9762\u4e2d\u53d1\u51fa\u6765\u7684\u8bf7\u6c42\u8fdb\u884c\u5904\u7406\u3002\u53d1\u6325MVC\u6846\u67b6\u7684\u4f5c\u7528\u628a\u6570\u636e\u5c55\u793a\u5728\u9875\u9762\u5f53\u4e2d\u3002MVC\u6846\u67b6\u548cspring\u6846\u67b6\u662f\u65e0\u7f1d\u8fde\u63a5\u7684\u3002MVC\u6846\u67b6\u7ee7\u627f\u4e86ajax\uff0c\u6240\u4ee5\u53ef\u4ee5\u5728vue\u9875\u9762\u5f53\u4e2d\u4f7f\u7528ajax\u4f20\u9012\u6570\u636e\u5230controller\u7c7b\u4e2d\u3002\u5728controller\u4e2d\u4f7f\u7528response body\u6ce8\u89e3\u8fdb\u884c\u4ea4\u4e92\u3002mvc\u6846\u67b6\u5728\u548c\u5176\u5b83\u6846\u67b6\u8fdb\u884c\u6574\u5408\u7684\u65f6\u5019\u8981\u7b80\u5355\u5f97\u591a\u3002\n  <\/p>\n<p>\n   1.B\/S\u67b6\u6784\uff1a<br \/>\n   <br \/>\n   \u91c7\u7528B\/S\u67b6\u6784\u53ef\u4ee5\u8ba9\u7528\u6237\u901a\u8fc7\u6807\u51c6\u7684\u7f51\u7edc\u6d4f\u89c8\u5668\u8bbf\u95ee\u7cfb\u7edf\uff0c\u65e0\u9700\u5728\u672c\u5730\u5b89\u88c5\u7279\u5b9a\u7684\u5ba2\u6237\u7aef\u8f6f\u4ef6\u3002\u8fd9\u79cd\u67b6\u6784\u4e0d\u4ec5\u7b80\u5316\u4e86\u5ba2\u6237\u7aef\u7684\u7ef4\u62a4\u5de5\u4f5c\uff0c\u8fd8\u4f7f\u5f97\u7cfb\u7edf\u80fd\u591f\u5feb\u901f\u90e8\u7f72\u548c\u5347\u7ea7\u3002\u5728B\/S\u67b6\u6784\u4e2d\uff0c\u670d\u52a1\u5668\u7aef\u8d1f\u8d23\u5904\u7406\u4e1a\u52a1\u903b\u8f91\u3001\u6570\u636e\u5b58\u50a8\u548c\u68c0\u7d22\uff0c\u800c\u6d4f\u89c8\u5668\u7aef\u5219\u8d1f\u8d23\u5c55\u793a\u7528\u6237\u754c\u9762\u548c\u63a5\u6536\u7528\u6237\u8f93\u5165\u3002\u8fd9\u79cd\u5206\u79bb\u7684\u67b6\u6784\u6709\u52a9\u4e8e\u63d0\u9ad8\u7cfb\u7edf\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002<br \/>\n   <br \/>\n   2.Java\u6280\u672f\u6808\uff1a<br \/>\n   <br \/>\n   \u6211\u5c06\u91c7\u7528Java\u8bed\u8a00\uff0c\u5229\u7528Spring Boot\u6846\u67b6\u6765\u6784\u5efa\u3002Spring Boot\u7b80\u5316\u4e86\u57fa\u4e8eSpring\u7684\u5e94\u7528\u5f00\u53d1\uff0c\u63d0\u4f9b\u4e86\u5927\u91cf\u7684\u81ea\u52a8\u914d\u7f6e\uff0c\u51cf\u5c11\u4e86\u5f00\u53d1\u8005\u7684\u914d\u7f6e\u5de5\u4f5c\u91cf\u3002Spring Boot\u7684\u96c6\u6210\u7279\u6027\uff0c\u5982\u4f9d\u8d56\u6ce8\u5165\u3001\u73af\u5883\u62bd\u8c61\u7b49\uff0c\u5c06\u6709\u52a9\u4e8e\u5feb\u901f\u5f00\u53d1\u548c\u6d4b\u8bd5\uff0c\u540c\u65f6\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u91cd\u7528\u6027\u548c\u53ef\u6d4b\u8bd5\u6027\u3002<br \/>\n   <br \/>\n   3.Vue.js\u6846\u67b6\uff1a<br \/>\n   <br \/>\n   \u754c\u9762\u5c06\u91c7\u7528Vue.js\u6846\u67b6\u6765\u6784\u5efa\u3002Vue.js\u662f\u4e00\u4e2a\u6e10\u8fdb\u5f0fJavaScript\u6846\u67b6\uff0c\u7528\u4e8e\u6784\u5efa\u7528\u6237\u754c\u9762\uff0c\u5b83\u6613\u4e8e\u4e0a\u624b\u4e14\u7075\u6d3b\uff0c\u975e\u5e38\u9002\u5408\u6784\u5efa\u590d\u6742\u7684\u5355\u9875\u5e94\u7528\u3002Vue.js\u7684\u7ec4\u4ef6\u5316\u67b6\u6784\u5c06\u5141\u8bb8\u6211\u4eec\u5c06\u754c\u9762\u5206\u89e3\u4e3a\u53ef\u590d\u7528\u7684\u7ec4\u4ef6\uff0c\u6bcf\u4e2a\u7ec4\u4ef6\u8d1f\u8d23\u7279\u5b9a\u7684\u529f\u80fd\u533a\u57df\uff0c\u8fd9\u5c06\u6709\u52a9\u4e8e\u63d0\u9ad8\u5f00\u53d1\u6548\u7387\u548c\u754c\u9762\u7684\u53ef\u7ef4\u62a4\u6027\u3002\u5229\u7528Vue.js\u7684\u54cd\u5e94\u5f0f\u6570\u636e\u7ed1\u5b9a\u548c\u5ba2\u6237\u7aef\u8def\u7531\u63a7\u5236\uff0c\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u6d41\u7545\u4e14\u5bcc\u6709\u4e92\u52a8\u6027\u7684\u7528\u6237\u4f53\u9a8c\u3002<br \/>\n   <br \/>\n   4.MySQL\u6570\u636e\u5e93\uff1a<br \/>\n   <br \/>\n   \u7cfb\u7edf\u5c06\u91c7\u7528MySQL\u4f5c\u4e3a\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u7528\u4e8e\u5b58\u50a8\u7528\u6237\u6570\u636e\u3001\u8bfe\u7a0b\u4fe1\u606f\u3001\u6210\u7ee9\u8bb0\u5f55\u7b49\u5173\u952e\u6570\u636e\u3002MySQL\u662f\u4e00\u4e2a\u6210\u719f\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u4ee5\u5176\u9ad8\u6027\u80fd\u3001\u9ad8\u53ef\u9760\u6027\u548c\u6613\u7528\u6027\u800c\u95fb\u540d\u3002MySQL\u7684ACID\uff08\u539f\u5b50\u6027\u3001\u4e00\u81f4\u6027\u3001\u9694\u79bb\u6027\u3001\u6301\u4e45\u6027\uff09\u7279\u6027\u5c06\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\uff0c\u5373\u4f7f\u5728\u9ad8\u5e76\u53d1\u7684\u60c5\u51b5\u4e0b\u4e5f\u80fd\u4fdd\u6301\u6570\u636e\u7684\u51c6\u786e\u6027\u3002\u901a\u8fc7\u4f7f\u7528MySQL\u7684\u5b58\u50a8\u8fc7\u7a0b\u548c\u89e6\u53d1\u5668\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u6570\u636e\u5e93\u5c42\u9762\u5b9e\u73b0\u4e00\u4e9b\u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91\uff0c\u51cf\u8f7b\u5e94\u7528\u670d\u52a1\u5668\u7684\u8d1f\u62c5\u3002\n  <\/p>\n<h3>\n   <a id=\"_63\"><br \/>\n   <\/a><br \/>\n   \u6838\u5fc3\u4ee3\u7801\u53c2\u8003\u793a\u4f8b<br \/>\n  <\/h3>\n<pre><code class=\"prism language-java\"><span class=\"token comment\">\/**\n * \u534f\u540c\u8fc7\u6ee4\u7b97\u6cd5\n *\/<\/span>\n<span class=\"token keyword\">public<\/span> <span class=\"token class-name\">UserBasedCollaborativeFiltering<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Map<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Map<\/span><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Double<\/span><span class=\"token punctuation\">&gt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> userRatings<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n       <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>userRatings <span class=\"token operator\">=<\/span> userRatings<span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>itemUsers <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">HashMap<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>userIndex <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">HashMap<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u8f85\u52a9\u5b58\u50a8\u6bcf\u4e00\u4e2a\u7528\u6237\u7684\u7528\u6237\u7d22\u5f15index\u6620\u5c04:user-&gt;index<\/span>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>indexUser <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">HashMap<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u8f85\u52a9\u5b58\u50a8\u6bcf\u4e00\u4e2a\u7d22\u5f15index\u5bf9\u5e94\u7684\u7528\u6237\u6620\u5c04:index-&gt;user<\/span>\n        <span class=\"token comment\">\/\/ \u6784\u5efa\u7269\u54c1-\u7528\u6237\u5012\u6392\u8868<\/span>\n        <span class=\"token keyword\">int<\/span> keyIndex <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> user <span class=\"token operator\">:<\/span> userRatings<span class=\"token punctuation\">.<\/span><span class=\"token function\">keySet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n            <span class=\"token class-name\">Map<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Double<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> ratings <span class=\"token operator\">=<\/span> userRatings<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>user<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> item <span class=\"token operator\">:<\/span> ratings<span class=\"token punctuation\">.<\/span><span class=\"token function\">keySet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n                <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>itemUsers<span class=\"token punctuation\">.<\/span><span class=\"token function\">containsKey<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n                    itemUsers<span class=\"token punctuation\">.<\/span><span class=\"token function\">put<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n                <span class=\"token punctuation\">}<\/span>\n                itemUsers<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>user<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            <span class=\"token punctuation\">}<\/span>\n          <span class=\"token comment\">\/\/\u7528\u6237ID\u4e0e\u7a00\u758f\u77e9\u9635\u5efa\u7acb\u5bf9\u5e94\u5173\u7cfb<\/span>\n            <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>userIndex<span class=\"token punctuation\">.<\/span><span class=\"token function\">put<\/span><span class=\"token punctuation\">(<\/span>user<span class=\"token punctuation\">,<\/span>keyIndex<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>indexUser<span class=\"token punctuation\">.<\/span><span class=\"token function\">put<\/span><span class=\"token punctuation\">(<\/span>keyIndex<span class=\"token punctuation\">,<\/span>user<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            keyIndex<span class=\"token operator\">++<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token punctuation\">}<\/span>\n        <span class=\"token keyword\">int<\/span> <span class=\"token class-name\">N<\/span> <span class=\"token operator\">=<\/span> userRatings<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>sparseMatrix<span class=\"token operator\">=<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Long<\/span><span class=\"token punctuation\">[<\/span><span class=\"token class-name\">N<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token class-name\">N<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u5efa\u7acb\u7528\u6237\u7a00\u758f\u77e9\u9635\uff0c\u7528\u4e8e\u7528\u6237\u76f8\u4f3c\u5ea6\u8ba1\u7b97\u3010\u76f8\u4f3c\u5ea6\u77e9\u9635\u3011<\/span>\n        <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i<span class=\"token operator\">=<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>i<span class=\"token operator\">&lt;<\/span><span class=\"token class-name\">N<\/span><span class=\"token punctuation\">;<\/span>i<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<!-- --><\/span>\n            <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> j<span class=\"token operator\">=<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>j<span class=\"token operator\">&lt;<\/span><span class=\"token class-name\">N<\/span><span class=\"token punctuation\">;<\/span>j<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span>\n               <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>sparseMatrix<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><span class=\"token operator\">=<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">long<\/span><span class=\"token punctuation\">)<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token punctuation\">}<\/span>\n        <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> item <span class=\"token operator\">:<\/span> itemUsers<span class=\"token punctuation\">.<\/span><span class=\"token function\">keySet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n           <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> userList <span class=\"token operator\">=<\/span> itemUsers<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n           <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> u1 <span class=\"token operator\">:<\/span> userList<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n              <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> u2 <span class=\"token operator\">:<\/span> userList<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n                 <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>u1<span class=\"token punctuation\">.<\/span><span class=\"token function\">equals<\/span><span class=\"token punctuation\">(<\/span>u2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<!-- --><\/span>\n                        <span class=\"token keyword\">continue<\/span><span class=\"token punctuation\">;<\/span>\n                    <span class=\"token punctuation\">}<\/span>\n                 <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>sparseMatrix<span class=\"token punctuation\">[<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>userIndex<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>u1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>userIndex<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>u2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">]<\/span><span class=\"token operator\">+=<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span>\n              <span class=\"token punctuation\">}<\/span>\n           <span class=\"token punctuation\">}<\/span>\n        <span class=\"token punctuation\">}<\/span>\n    <span class=\"token punctuation\">}<\/span>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">double<\/span> <span class=\"token function\">calculateSimilarity<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> user1<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> user2<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n        <span class=\"token comment\">\/\/\u8ba1\u7b97\u7528\u6237\u4e4b\u95f4\u7684\u76f8\u4f3c\u5ea6\u3010\u4f59\u5f26\u76f8\u4f3c\u6027\u3011<\/span>\n        <span class=\"token class-name\">Integer<\/span> id1 <span class=\"token operator\">=<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>userIndex<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>user1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token class-name\">Integer<\/span> id2 <span class=\"token operator\">=<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>userIndex<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>user2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>id1<span class=\"token operator\">==<\/span><span class=\"token keyword\">null<\/span> <span class=\"token operator\">||<\/span> id2<span class=\"token operator\">==<\/span><span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token number\">0.0<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>sparseMatrix<span class=\"token punctuation\">[<\/span>id1<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span>id2<span class=\"token punctuation\">]<\/span><span class=\"token operator\">\/<\/span><span class=\"token class-name\">Math<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">sqrt<\/span><span class=\"token punctuation\">(<\/span>userRatings<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>indexUser<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>id1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">*<\/span>userRatings<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>indexUser<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>id2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">recommendItems<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> targetUser<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> numRecommendations<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n        <span class=\"token comment\">\/\/ \u8ba1\u7b97\u76ee\u6807\u7528\u6237\u4e0e\u5176\u4ed6\u7528\u6237\u7684\u76f8\u4f3c\u5ea6<\/span>\n        <span class=\"token class-name\">Map<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Double<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> userSimilarities <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">HashMap<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> user <span class=\"token operator\">:<\/span> userRatings<span class=\"token punctuation\">.<\/span><span class=\"token function\">keySet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>user<span class=\"token punctuation\">.<\/span><span class=\"token function\">equals<\/span><span class=\"token punctuation\">(<\/span>targetUser<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n                <span class=\"token keyword\">double<\/span> similarity <span class=\"token operator\">=<\/span> <span class=\"token function\">calculateSimilarity<\/span><span class=\"token punctuation\">(<\/span>targetUser<span class=\"token punctuation\">,<\/span> user<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n                userSimilarities<span class=\"token punctuation\">.<\/span><span class=\"token function\">put<\/span><span class=\"token punctuation\">(<\/span>user<span class=\"token punctuation\">,<\/span> similarity<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            <span class=\"token punctuation\">}<\/span>\n        <span class=\"token punctuation\">}<\/span>\n        <span class=\"token comment\">\/\/ \u6839\u636e\u76f8\u4f3c\u5ea6\u8fdb\u884c\u6392\u5e8f<\/span>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Map<span class=\"token punctuation\">.<\/span>Entry<\/span><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Double<\/span><span class=\"token punctuation\">&gt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> sortedSimilarities <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span>userSimilarities<span class=\"token punctuation\">.<\/span><span class=\"token function\">entrySet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        sortedSimilarities<span class=\"token punctuation\">.<\/span><span class=\"token function\">sort<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Map<span class=\"token punctuation\">.<\/span>Entry<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">comparingByValue<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Comparator<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">reverseOrder<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token comment\">\/\/ \u9009\u62e9\u76f8\u4f3c\u5ea6\u6700\u9ad8\u7684K\u4e2a\u7528\u6237<\/span>\n        <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> similarUsers <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">ArrayList<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> numRecommendations<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>i <span class=\"token operator\">&lt;<\/span> sortedSimilarities<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n                similarUsers<span class=\"token punctuation\">.<\/span><span class=\"token function\">add<\/span><span class=\"token punctuation\">(<\/span>sortedSimilarities<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getKey<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n                <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span>\n            <span class=\"token punctuation\">}<\/span>\n        <span class=\"token punctuation\">}<\/span>\n        <span class=\"token comment\">\/\/ \u83b7\u53d6\u76f8\u4f3c\u7528\u6237\u559c\u6b22\u7684\u7269\u54c1\uff0c\u5e76\u8fdb\u884c\u63a8\u8350<\/span>\n        <span class=\"token class-name\">Map<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Double<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> recommendations <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">HashMap<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> user <span class=\"token operator\">:<\/span> similarUsers<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n            <span class=\"token class-name\">Map<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Double<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> ratings <span class=\"token operator\">=<\/span> userRatings<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>user<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> item <span class=\"token operator\">:<\/span> ratings<span class=\"token punctuation\">.<\/span><span class=\"token function\">keySet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n                <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>userRatings<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>targetUser<span class=\"token punctuation\">)<\/span><span class=\"token operator\">!=<\/span><span class=\"token keyword\">null<\/span> <span class=\"token operator\">&amp;&amp;<\/span> <span class=\"token operator\">!<\/span>userRatings<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>targetUser<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">containsKey<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<!-- --><\/span>\n                    recommendations<span class=\"token punctuation\">.<\/span><span class=\"token function\">put<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">,<\/span> ratings<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n                <span class=\"token punctuation\">}<\/span>\n            <span class=\"token punctuation\">}<\/span>\n        <span class=\"token punctuation\">}<\/span>\n\n\n<\/code><\/pre>\n<h3>\n   <a id=\"__149\"><br \/>\n   <\/a><br \/>\n   \u56fe\u4e66\u9605\u8bfb\u5206\u4eab\u7cfb\u7edf \u8bba\u6587\u63d0\u7eb2\u53c2\u8003<br \/>\n  <\/h3>\n<p>\n   1 \u7eea\u8bba<br \/>\n   <br \/>\n   1.1\u9009\u9898\u80cc\u666f\u548c\u7814\u7a76\u610f\u4e49<br \/>\n   <br \/>\n   1.2\u8bba\u6587\u5185\u5bb9\u7b80\u4ecb<br \/>\n   <br \/>\n   1.3\u8bba\u6587\u7ed3\u6784<br \/>\n   <br \/>\n   2 \u7cfb\u7edf\u8bbe\u8ba1\u9700\u6c42\u5206\u6790<br \/>\n   <br \/>\n   2.1 \u529f\u80fd\u6027\u9700\u6c42\u5206\u6790<br \/>\n   <br \/>\n   2.2 \u975e\u529f\u80fd\u6027\u9700\u6c42\u5206\u6790<br \/>\n   <br \/>\n   3 \u7cfb\u7edf\u6982\u8981\u8bbe\u8ba1<br \/>\n   <br \/>\n   3.1 \u7cfb\u7edf\u603b\u4f53\u67b6\u6784\u8bbe\u8ba1<br \/>\n   <br \/>\n   3.2 \u7cfb\u7edf\u5de5\u4f5c\u6d41\u7a0b<br \/>\n   <br \/>\n   3.3 \u6570\u636e\u5e93\u8bbe\u8ba1<br \/>\n   <br \/>\n   3.4 \u7a0b\u5e8f\u529f\u80fd\u6a21\u5757\u8bbe\u8ba1<br \/>\n   <br \/>\n   4 \u7a0b\u5e8f\u8be6\u7ec6\u8bbe\u8ba1<br \/>\n   <br \/>\n   4.1 \u7a0b\u5e8f\u529f\u80fd\u6a21\u5757\u8bbe\u8ba1\u4e0e\u5b9e\u73b0<br \/>\n   <br \/>\n   4.2 \u7a0b\u5e8f\u529f\u80fd\u4f18\u5316<br \/>\n   <br \/>\n   5 \u7a0b\u5e8f\u529f\u80fd\u6d4b\u8bd5<br \/>\n   <br \/>\n   6 \u603b\u7ed3<br \/>\n   <br \/>\n   7 \u53c2\u8003\u6587\u732e\n  <\/p>\n<h3>\n   <a id=\"_168\"><br \/>\n   <\/a><br \/>\n   \u6e90\u7801\u83b7\u53d6\u8be6\u7ec6\u89c6\u9891\u6f14\u793a\uff1a\u6587\u7ae0\u5e95\u90e8\u83b7\u53d6\u535a\u4e3b\u8054\u7cfb\u65b9\u5f0f\uff01\uff01\uff01\uff01<br \/>\n  <\/h3>\n<p>\n   <font color=\"red\" size=\"+1\"><br \/>\n    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\/>\n  <\/h3>\n<p>\n   \u7cfb\u7edf\u6d4b\u8bd5\u5728\u56fe\u4e66\u9605\u8bfb\u5206\u4eab\u7cfb\u7edf \u7684\u8bbe\u8ba1\u4e0e\u5b9e\u73b0\u4e2d\u8d77\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002\u901a\u8fc7\u4f7f\u7528\u529f\u80fd\u6d4b\u8bd5\u3001\u6027\u80fd\u6d4b\u8bd5\u548c\u7a33\u5b9a\u6027\u6d4b\u8bd5\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u786e\u4fdd\u8be5\u56fe\u4e66\u9605\u8bfb\u5206\u4eab\u7cfb\u7edf \u7684\u7a0b\u5e8f\u4ee3\u7801\u80fd\u591f\u6b63\u5e38\u8fd0\u884c\uff0c\u5e76\u63d0\u4f9b\u826f\u597d\u7684\u7528\u6237\u4f53\u9a8c\u3002\u540c\u65f6\uff0c\u91c7\u7528\u9002\u5f53\u7684\u6d4b\u8bd5\u6280\u672f\u548c\u5de5\u5177\u53ef\u4ee5\u63d0\u9ad8\u6d4b\u8bd5\u6548\u7387\u548c\u51c6\u786e\u6027\uff0c\u4ece\u800c\u6709\u6548\u5730\u9a8c\u8bc1\u7cfb\u7edf\u7684\u529f\u80fd\u3001\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002<br \/>\n   <br \/>\n   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