{"id":4285,"date":"2019-06-02T17:02:09","date_gmt":"2019-06-02T09:02:09","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=4285"},"modified":"2019-06-02T17:02:09","modified_gmt":"2019-06-02T09:02:09","slug":"%e6%89%8b%e6%8a%8a%e6%89%8b%e6%95%99%e4%bd%a0-java-mybatis-%e5%ae%9e%e7%8e%b0%e7%94%b5%e5%95%86%e7%b3%bb%e7%bb%9f%e5%88%86%e8%a1%a8%e6%9f%a5%e8%af%a2","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=4285","title":{"rendered":"\u624b\u628a\u624b\u6559\u4f60 Java + Mybatis \u5b9e\u73b0\u7535\u5546\u7cfb\u7edf\u5206\u8868\u67e5\u8be2"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u524d\u9762\u6211\u4e5f\u5199\u8fc7\u4e00\u7bc7\u5206\u5e93\u5b9e\u6218\uff0c\u5f88\u591a\u8bfb\u8005\u8ba8\u8bba\u7684\u5f88\u70ed\u70c8\u3002\u4eca\u5929\u6211\u5728\u7ed9\u5927\u5bb6\u5b9e\u73b0\u4e00\u4e2a\u5206\u8868\u7684\u624b\u628a\u624b\u5b9e\u6218\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u5f00\u59cb\u4e4b\u524d\uff0c\u6211\u5148\u5570\u55e6\u4e00\u70b9\u7406\u8bba\u77e5\u8bc6\u3002\u8bf4\u5b9e\u8bdd\uff0c\u6211\u4eec\u6bcf\u4e2a\u7cfb\u7edf\u5e76\u4e0d\u662f\u4e00\u4e0a\u6765\u5c31\u5f00\u59cb\u5206\u8868\uff0c\u5206\u5e93\u3002\u800c\u662f\u5728\u6570\u636e\u91cf\u8fbe\u5230\u4e00\u5b9a\u7a0b\u5ea6\uff0c\u4e14\u5404\u79cd\u4f18\u5316\u624b\u6bb5\u90fd\u4f7f\u7528\u8fc7\u540e\uff0c\u4ecd\u7136\u5b58\u5728\u7cfb\u7edf\u74f6\u9888\u7684\u65f6\u5019\uff0c\u624d\u4f7f\u7528\u5206\u8868\u3002\u56e0\u4e3a\u5206\u8868\u4f1a\u52a0\u5927\u4e1a\u52a1\u7684\u590d\u6742\u7a0b\u5ea6\uff0c\u901a\u5e38\u90fd\u662f\u4e0d\u5f97\u5df2\u800c\u4e3a\u4e4b\u7684\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u7684\uff0cMySQL 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class=\"wp-block-paragraph\">\u7b2c\u4e09\u4ee5\u4e0a\u90fd\u505a\u4e86\u540e\uff0c\u8fd8\u662f\u6162\uff0c\u5c31\u505a\u4e3b\u4ece\u590d\u5236\u6216\u4e3b\u4e3b\u590d\u5236\uff0c\u8bfb\u5199\u5206\u79bb\uff0c\u53ef\u4ee5\u5728\u5e94\u7528\u5c42\u505a\uff0c\u6548\u7387\u9ad8\uff0c\u4e5f\u53ef\u4ee5\u91c7\u7528\u7b2c\u4e09\u65b9\u5de5\u5177\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/wx1.sinaimg.cn\/large\/8fa5dcfcly1g3mx2jnwioj20ix09gwj8.jpg\" alt=\"\" \/><figcaption>\u7b2c\u4e09\u65b9\u5206\u8868\u5206\u5e93\u6846\u67b6\u5bf9\u6bd4<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u56db\u5982\u679c\u4ee5\u4e0a\u90fd\u505a\u4e86\u8fd8\u662f\u6162\uff0c\u4e0d\u8981\u60f3\u7740\u53bb\u505a\u5207\u5206\uff0cmysql \u81ea\u5e26\u5206\u533a\u8868\uff0c\u5148\u8bd5\u8bd5\u8fd9\u4e2a\uff0c\u5bf9\u4f60\u7684\u5e94\u7528\u662f\u900f\u660e\u7684\uff0c\u65e0\u9700\u66f4\u6539\u4ee3\u7801\u3002\u4f46\u662f sql \u8bed\u53e5\u662f\u9700\u8981\u9488\u5bf9\u5206\u533a\u8868\u505a\u4f18\u5316\u7684\uff0csql \u6761\u4ef6\u4e2d\u8981\u5e26\u4e0a\u5206\u533a\u6761\u4ef6\u7684\u5217\uff0c\u4ece\u800c\u4f7f\u67e5\u8be2\u5b9a\u4f4d\u5230\u5c11\u91cf\u7684\u5206\u533a\u4e0a\uff0c\u5426\u5219\u5c31\u4f1a\u626b\u63cf\u5168\u90e8\u5206\u533a\uff0c\u53e6\u5916\u5206\u533a\u8868\u8fd8\u6709\u4e00\u4e9b\u5751\u3002\u8fd9\u4e00\u6761\u5bf9\u6570\u636e\u5e93\u7684\u77e5\u8bc6\u8981\u6c42\u6bd4\u8f83\u9ad8\uff0c\u5982\u679c\u516c\u53f8\u6ca1\u6709\u914d\u5907 DBA\uff0c\u6216\u8005\u6280\u672f\u50a8\u5907\u4e0d\u8db3\u7684\u60c5\u51b5\u4e0b\uff0c\u8981\u614e\u7528\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e94\u5982\u679c\u4ee5\u4e0a\u90fd\u505a\u4e86\uff0c\u90a3\u5c31\u5148\u505a\u5782\u76f4\u62c6\u5206\uff0c\u5176\u5b9e\u5c31\u662f\u6839\u636e\u4f60\u6a21\u5757\u7684\u8026\u5408\u5ea6\uff0c\u5c06\u4e00\u4e2a\u5927\u7684\u7cfb\u7edf\u5206\u4e3a\u591a\u4e2a\u5c0f\u7684\u7cfb\u7edf\uff0c\u4e5f\u5c31\u662f\u5206\u5e03\u5f0f\u7cfb\u7edf\u3002\u8fd9\u662f\u73b0\u5728\u5404\u5927\u7cfb\u7edf\u70ed\u8877\u91c7\u7528\u7684\u65b9\u6848\uff0c\u53ef\u4ee5\u4f18\u5148\u8003\u8651\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u516d\u624d\u662f\u6c34\u5e73\u5207\u5206\uff0c\u9488\u5bf9\u6570\u636e\u91cf\u5927\u7684\u8868\uff0c\u8fd9\u4e00\u6b65\u6700\u9ebb\u70e6\uff0c\u6700\u80fd\u8003\u9a8c\u6280\u672f\u6c34\u5e73\uff0c\u8981\u9009\u62e9\u4e00\u4e2a\u5408\u7406\u7684 sharding key\u3002\u4e3a\u4e86\u6709\u597d\u7684\u67e5\u8be2\u6548\u7387\uff0c\u8868\u7ed3\u6784\u4e5f\u8981\u6539\u52a8\uff0c\u505a\u4e00\u5b9a\u7684\u5197\u4f59\uff0c\u5e94\u7528\u4e5f\u8981\u6539\uff0csql \u4e2d\u5c3d\u91cf\u5e26 sharding key\uff0c\u5c06\u6570\u636e\u5b9a\u4f4d\u5230\u9650\u5b9a\u7684\u8868\u4e0a\u53bb\u67e5\uff0c\u800c\u4e0d\u662f\u626b\u63cf\u5168\u90e8\u7684\u8868\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9488\u5bf9 mysql \u6570\u636e\u5e93\u4e00\u822c\u90fd\u662f\u6309\u7167\u8fd9\u4e2a\u6b65\u9aa4\u53bb\u6f14\u5316\u7684\uff0c\u6210\u672c\u4e5f\u662f\u7531\u4f4e\u5230\u9ad8\u3002\u597d\u4e86\uff0c\u73b0\u5728\u4ecb\u7ecd\u5b8c\u8fd9\u4e9b\u77e5\u8bc6\u540e\uff0c\u6211\u5c31\u6765\u7ed9\u5927\u5bb6\u4e00\u4e2a\u7b80\u5355\u7684\u5206\u8868\u5b9e\u73b0\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8bbe\u6211\u4eec\u73b0\u5728\u6709 1000 \u4e07\u6570\u636e\uff0c\u9879\u76ee\u8981\u6c42\u9700\u8981\u5206 2 \u4e2a\u8868\u3002\u6bd4\u5982\uff0cxttblog \u8868\u4f1a\u88ab\u5206\u6210 xttblog_0 \u548c xttblog_1\u3002\u6ce8\u610f\uff0c\u6211\u8fd9\u91cc\u53ea\u662f\u4e3e\u4f8b\uff0c\u5b9e\u9645\u4e1a\u52a1\u4e2d\uff0c\u4f1a\u6839\u636e\u5177\u4f53\u7684\u6570\u636e\u91cf\uff0c\u548c\u589e\u957f\u8d8b\u52bf\u8fdb\u884c\u6c34\u5e73\u5206\u8868\uff0c\u5206\u8868\u6570\u91cf\u4e5f\u5c06\u8fdc\u8fdc\u7684\u8d85\u8fc7\u51e0\u5341\u4e2a\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/wx1.sinaimg.cn\/large\/8fa5dcfcly1g3mx0cgm23j20li09jjsb.jpg\" alt=\"\" \/><figcaption>Java MySQL \u5206\u8868\u5b9e\u6218<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u6839\u636e\u4e0a\u9762\u7684\u8bf4\u660e\uff0c\u6211\u9700\u8981\u5bf9 1000 \u4e07\u6761\u6570\u636e\u5206\u6210\u4e24\u4e2a\u8868\uff0c\u90a3\u6211\u7684\u505a\u6cd5\u5c31\u662f\uff0c\u5c06\u5229\u7528 xttblog \u8868\u7684\u81ea\u52a8\u589e\u957f ID \u6765\u5b9e\u73b0\u5206\u8868\u3002id%2 == 0 \u7684\u64cd\u4f5c\u8868 xttblog_0\uff0c\u540c\u7406 Id%2 == 1 \u7684\u64cd\u4f5c\u8868 xttblog_1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f60\u7406\u89e3\u4e86\u8fd9\u4e2a\u4e4b\u540e\uff0c\u518d\u6765\u770b\u770b\u6211\u4eec MyBatis \u5bf9\u5206\u8868\u67e5\u8be2\u7684\u76f8\u5173\u4ee3\u7801\u5427\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;select id=\"getXttblog\" parameterType=\"java.util.Map\u201d \n  resultType=\"XttblogDO\"&gt; \n    SELECT id,name \n    FROM xttblog_#{tabIndex} \n    WHERE id = #{id} \n&lt;\/select&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e2a SQL \u867d\u7136\u5f88\u7b80\u5355\uff0c\u4f46\u5206\u8868\u4f1a\u5f71\u54cd\u5230\u5176\u4ed6\u4e00\u4e9b\u4e1a\u52a1\u7684\u590d\u6742\u5ea6\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u73b0\u5728\uff0c\u5047\u8bbe\u6211\u4eec\u8981\u67e5\u8be2 1000001 \u7684\u6570\u636e\uff0c\u90a3\u4e48\u6211\u4eec\u7684\u5b9e\u9645\u6267\u884c\u7684 SQL \u5c31\u5982\u4e0b\u9762\u6240\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT id,name \n  FROM xttblog_1\n  WHERE id = 1000001<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u8fd9\u91cc\u7684\u5206\u8868\u903b\u8f91\u975e\u5e38\u7b80\u5355\uff0c\u5b9e\u9645\u9879\u76ee\u4e2d\u53ef\u80fd\u4f1a\u91c7\u7528\u5176\u4ed6\u7684\u4e00\u4e9b\u5206\u8868\u7b56\u7565\u3002\u5176\u4e2d\u5177\u4f53\u6709\u54ea\u4e9b\u5206\u8868\u7b56\u7565\uff0c\u4ee5\u53ca\u5206\u8868\u4f1a\u5e26\u6765\u54ea\u4e9b\u4e1a\u52a1\u95ee\u9898\uff1f\u6b22\u8fce\u5927\u5bb6\u7559\u8a00\u8ba8\u8bba\u3002\u6211\u540e\u9762\u4f1a\u7ee7\u7eed\u4e66\u5199\u8fd9\u65b9\u9762\u7684\u6587\u7ae0\uff0c\u548c\u5927\u5bb6\u4e00\u8d77\u6210\u957f\uff01<\/p>\n<!-- <audio autoplay=\"autoplay\" height=\"100\" width=\"100\" hidden=\"true\"><source src=\"https:\/\/c.coka.la\/orAvPR.mp3\" type=\"audio\/mp3\"\/><\/audio><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/ws3.sinaimg.cn\/large\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/> --><p><!-- <img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/xmt1139057136\/xttblog\/master\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/>--><img decoding=\"async\" src=\"https:\/\/saas.51autoparts.cn\/api\/admin\/sys-file\/oss\/file?fileName=84db51f8561e448f9a4fda2eff0811f9.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/><\/p><p>\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01<b>\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1a<font color=\"red\">xttblog2<\/font>\u3002\u5907\u6ce8\uff1a\u201c1\u201d\uff0c\u6dfb\u52a0\u535a\u4e3b\u5fae\u4fe1\u62c9\u4f60\u8fdb\u5fae\u4fe1\u7fa4\u3002\u5907\u6ce8\u9519\u8bef\u4e0d\u4f1a\u540c\u610f\u597d\u53cb\u7533\u8bf7\u3002<\/b>\u518d\u6b21\u611f\u8c22\u60a8\u7684\u5173\u6ce8\uff01\u540e\u7eed\u6709\u7cbe\u5f69\u5185\u5bb9\u4f1a\u7b2c\u4e00\u65f6\u95f4\u53d1\u7ed9\u60a8\uff01\u539f\u521b\u6587\u7ae0\u6295\u7a3f\u8bf7\u53d1\u9001\u81f3532009913@qq.com\u90ae\u7bb1\u3002\u5546\u52a1\u5408\u4f5c\u4e5f\u53ef\u6dfb\u52a0\u4f5c\u8005\u5fae\u4fe1\u8fdb\u884c\u8054\u7cfb\uff01<\/p><p>\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a<a href=\"https:\/\/www.xttblog.com\">\u4e1a\u4f59\u8349<\/a>\uff1a &raquo; <a href=\"https:\/\/www.xttblog.com\/?p=4285\">\u624b\u628a\u624b\u6559\u4f60 Java + Mybatis \u5b9e\u73b0\u7535\u5546\u7cfb\u7edf\u5206\u8868\u67e5\u8be2<\/a><\/p><!-- <div class=\"bd-reward-stl\"><button id=\"bdRewardBtn\"><span><\/span><\/button><\/div> -->","protected":false},"excerpt":{"rendered":"<p>\u524d\u9762\u6211\u4e5f\u5199\u8fc7\u4e00\u7bc7\u5206\u5e93\u5b9e\u6218\uff0c\u5f88\u591a\u8bfb\u8005\u8ba8\u8bba\u7684\u5f88\u70ed\u70c8\u3002\u4eca\u5929\u6211\u5728\u7ed9\u5927\u5bb6\u5b9e\u73b0\u4e00\u4e2a\u5206\u8868\u7684\u624b\u628a\u624b\u5b9e\u6218\u3002 \u5728\u5f00\u59cb\u4e4b\u524d\uff0c\u6211\u5148\u5570\u55e6 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[1037,1653,83,391,79],"class_list":["post-4285","post","type-post","status-publish","format-standard","hentry","category-java","tag-mybatis","tag-mybatisplus","tag-mysql","tag-79"],"_links":{"self":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/4285","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4285"}],"version-history":[{"count":1,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/4285\/revisions"}],"predecessor-version":[{"id":4286,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/4285\/revisions\/4286"}],"wp:attachment":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4285"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4285"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4285"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}