{"id":14191,"date":"2023-12-04T00:38:34","date_gmt":"2023-12-03T16:38:34","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=14191"},"modified":"2023-12-04T00:39:20","modified_gmt":"2023-12-03T16:39:20","slug":"mybatis-you-na-xie-zhi-xing-qi-executor","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/mybatis-you-na-xie-zhi-xing-qi-executor\/","title":{"rendered":"MyBatis \u6709\u54ea\u4e9b\u6267\u884c\u5668(Executor)\uff1f"},"content":{"rendered":"<p>MyBatis \u4e2d\u6709\u4e09\u79cd\u4e3b\u8981\u7684\u6267\u884c\u5668\uff08Executor\uff09\uff1a<\/p>\n<h3>1. SimpleExecutor<\/h3>\n<ul>\n<li><strong>\u4f5c\u7528\uff1a<\/strong> SimpleExecutor \u662f MyBatis \u9ed8\u8ba4\u7684\u6267\u884c\u5668\u3002\u5b83\u4e3a\u6bcf\u4e2a SQL \u8bed\u53e5\u7684\u6267\u884c\u521b\u5efa\u4e00\u4e2a\u65b0\u7684 Statement \u5bf9\u8c61\uff0c\u6267\u884c\u5b8c\u5373\u5173\u95ed Statement\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u7279\u70b9\uff1a<\/strong> \u6bcf\u6b21\u6267\u884c SQL \u90fd\u4f1a\u521b\u5efa\u65b0\u7684 Statement\uff0c\u9002\u7528\u4e8e\u7b80\u5355\u7684\u3001\u5c0f\u89c4\u6a21\u7684\u67e5\u8be2\uff0c\u4e0d\u4f1a\u8fdb\u884c\u91cd\u7528\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>2. ReuseExecutor<\/h3>\n<ul>\n<li>\n<p><strong>\u4f5c\u7528\uff1a<\/strong> ReuseExecutor \u4f1a\u91cd\u7528 Statement \u5bf9\u8c61\uff0c\u5982\u679c\u5b58\u5728\u53ef\u91cd\u7528\u7684 Statement\uff0c\u5219\u4f1a\u91cd\u7528\u8be5 Statement \u5bf9\u8c61\uff0c\u5426\u5219\u521b\u5efa\u65b0\u7684 Statement \u5bf9\u8c61\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u7279\u70b9\uff1a<\/strong> \u5728\u540c\u4e00\u4e2a Session \u4e2d\uff0c\u76f8\u540c\u7684 SQL \u8bed\u53e5\u53ea\u4f1a\u521b\u5efa\u4e00\u4e2a Statement \u5bf9\u8c61\uff0c\u5e76\u8fdb\u884c\u91cd\u590d\u4f7f\u7528\uff0c\u6709\u52a9\u4e8e\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>3. BatchExecutor<\/h3>\n<ul>\n<li>\n<p><strong>\u4f5c\u7528\uff1a<\/strong> BatchExecutor \u662f\u7528\u4e8e\u6279\u91cf\u5904\u7406\u7684\u6267\u884c\u5668\uff0c\u53ef\u4ee5\u5c06\u591a\u4e2a SQL \u8bed\u53e5\u4e00\u8d77\u6279\u91cf\u63d0\u4ea4\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u7279\u70b9\uff1a<\/strong> \u9002\u7528\u4e8e\u6279\u91cf\u64cd\u4f5c\uff0c\u53ef\u4ee5\u5c06\u591a\u6761 SQL \u8bed\u53e5\u4e00\u8d77\u63d0\u4ea4\u5230\u6570\u636e\u5e93\u6267\u884c\uff0c\u63d0\u9ad8\u6279\u91cf\u64cd\u4f5c\u7684\u6548\u7387\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>\u4f7f\u7528\u65b9\u5f0f\uff1a<\/h3>\n<p>\u5728 MyBatis \u4e2d\uff0c\u9ed8\u8ba4\u7684\u6267\u884c\u5668\u662f SimpleExecutor\u3002\u53ef\u4ee5\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u6307\u5b9a\u5168\u5c40\u4f7f\u7528\u7684\u6267\u884c\u5668\u7c7b\u578b\uff0c\u901a\u8fc7 <code>&lt;setting name=\"defaultExecutorType\" value=\"REUSE\"\/&gt;<\/code> \u7684\u65b9\u5f0f\u6765\u914d\u7f6e\u5168\u5c40\u7684\u6267\u884c\u5668\u7c7b\u578b\u3002\u4e5f\u53ef\u4ee5\u5728 SQL \u6620\u5c04\u6587\u4ef6\u4e2d\u9488\u5bf9\u67d0\u4e2a statement \u5355\u72ec\u6307\u5b9a\u4f7f\u7528\u7684\u6267\u884c\u5668\u7c7b\u578b\u3002<\/p>\n<pre data-language=XML><code class=\"language-markup  line-numbers\">&lt;select id=\"selectUsers\" resultType=\"User\" executorType=\"BATCH\"&gt;\n    SELECT * FROM users\n&lt;\/select&gt;\n<\/code><\/pre>\n<p>\u9009\u62e9\u6267\u884c\u5668\u7684\u65b9\u5f0f\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8fdb\u884c\u7075\u6d3b\u914d\u7f6e\uff0c\u6839\u636e\u5177\u4f53\u7684 SQL \u6267\u884c\u573a\u666f\u9009\u62e9\u6700\u5408\u9002\u7684\u6267\u884c\u5668\u7c7b\u578b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MyBatis \u4e2d\u6709\u4e09\u79cd\u4e3b\u8981\u7684\u6267\u884c\u5668\uff08Executor\uff09\uff1a 1. SimpleExecutor \u4f5c\u7528\uff1a Sim [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[113],"tags":[],"class_list":["post-14191","post","type-post","status-publish","format-standard","hentry","category-mybatis"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14191","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=14191"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14191\/revisions"}],"predecessor-version":[{"id":14192,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14191\/revisions\/14192"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=14191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=14191"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=14191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}