{"id":14308,"date":"2023-12-04T01:24:01","date_gmt":"2023-12-03T17:24:01","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=14308"},"modified":"2023-12-04T01:24:25","modified_gmt":"2023-12-03T17:24:25","slug":"mybatis-shi-ru-he-jiang-sql-zhi-xing-jie-guo-feng-4","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/mybatis-shi-ru-he-jiang-sql-zhi-xing-jie-guo-feng-4\/","title":{"rendered":"MyBatis \u662f\u5982\u4f55\u5c06 sql \u6267\u884c\u7ed3\u679c\u5c01\u88c5\u4e3a\u76ee\u6807\u5bf9\u8c61\u5e76\u8fd4\u56de\u7684\uff1f\u90fd\u6709\u54ea\u4e9b\u6620\u5c04\u5f62\u5f0f\uff1f"},"content":{"rendered":"<p>MyBatis \u5c06 SQL \u6267\u884c\u7ed3\u679c\u5c01\u88c5\u4e3a\u76ee\u6807\u5bf9\u8c61\u5e76\u8fd4\u56de\u7684\u8fc7\u7a0b\u4e3b\u8981\u901a\u8fc7\u4e24\u79cd\u6620\u5c04\u5f62\u5f0f\u5b9e\u73b0\uff1a<\/p>\n<h3>1. \u57fa\u4e8e ResultMap \u7684\u6620\u5c04\uff1a<\/h3>\n<ul>\n<li><strong>ResultMap<\/strong>\uff1a\u5728 XML \u6620\u5c04\u6587\u4ef6\u4e2d\u5b9a\u4e49\u4e86 SQL \u67e5\u8be2\u7ed3\u679c\u96c6\u548c Java \u5bf9\u8c61\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre data-language=XML><code class=\"language-markup  line-numbers\">&lt;!-- XML \u6620\u5c04\u6587\u4ef6 --&gt;\n&lt;resultMap id=\"UserResultMap\" type=\"User\"&gt;\n    &lt;id property=\"id\" column=\"user_id\"\/&gt;\n    &lt;result property=\"username\" column=\"user_name\"\/&gt;\n    &lt;!-- \u5176\u4ed6\u6620\u5c04\u5173\u7cfb --&gt;\n&lt;\/resultMap&gt;\n\n&lt;select id=\"getUser\" resultMap=\"UserResultMap\"&gt;\n    SELECT user_id, user_name FROM users WHERE id = #{id}\n&lt;\/select&gt;\n<\/code><\/pre>\n<ul>\n<li><strong>\u4f18\u70b9<\/strong>\uff1a\u901a\u8fc7 ResultMap \u5b9a\u4e49\u4e86\u7ed3\u679c\u96c6\u4e0e\u5bf9\u8c61\u5c5e\u6027\u7684\u6620\u5c04\u5173\u7cfb\uff0c\u53ef\u4ee5\u8fdb\u884c\u66f4\u7075\u6d3b\u7684\u6620\u5c04\u914d\u7f6e\uff0c\u9002\u7528\u4e8e\u590d\u6742\u7684\u5bf9\u8c61\u7ed3\u6784\u3002<\/li>\n<\/ul>\n<h3>2. \u6ce8\u89e3\u65b9\u5f0f\u7684\u6620\u5c04\uff1a<\/h3>\n<ul>\n<li><strong>\u4f7f\u7528\u6ce8\u89e3<\/strong>\uff1a\u5728\u65b9\u6cd5\u4e0a\u76f4\u63a5\u4f7f\u7528\u6ce8\u89e3\u8fdb\u884c\u7ed3\u679c\u6620\u5c04\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre><code class=\"language-java  line-numbers\">\/\/ Java \u6ce8\u89e3\u65b9\u5f0f\n@Select(\"SELECT user_id, user_name FROM users WHERE id = #{id}\")\n@Results({\n    @Result(property = \"id\", column = \"user_id\"),\n    @Result(property = \"username\", column = \"user_name\")\n    \/\/ \u5176\u4ed6\u6620\u5c04\u5173\u7cfb\n})\nUser getUserById(int id);\n<\/code><\/pre>\n<ul>\n<li><strong>\u4f18\u70b9<\/strong>\uff1a\u6ce8\u89e3\u65b9\u5f0f\u7b80\u5355\u76f4\u89c2\uff0c\u5c06\u6620\u5c04\u5173\u7cfb\u76f4\u63a5\u5199\u5728\u65b9\u6cd5\u4e0a\uff0c\u9002\u7528\u4e8e\u7b80\u5355\u7684\u6620\u5c04\u9700\u6c42\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e24\u79cd\u65b9\u5f0f\u90fd\u80fd\u5c06 SQL \u67e5\u8be2\u7ed3\u679c\u6620\u5c04\u5230 Java \u5bf9\u8c61\u4e0a\uff0c\u901a\u8fc7\u6620\u5c04\u914d\u7f6e\uff0c\u5c06\u67e5\u8be2\u7ed3\u679c\u96c6\u4e2d\u7684\u5217\u4e0e Java \u5bf9\u8c61\u7684\u5c5e\u6027\u8fdb\u884c\u5bf9\u5e94\uff0c\u6700\u7ec8\u8fd4\u56de\u6620\u5c04\u540e\u7684\u5bf9\u8c61\u6216\u5bf9\u8c61\u96c6\u5408\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MyBatis \u5c06 SQL \u6267\u884c\u7ed3\u679c\u5c01\u88c5\u4e3a\u76ee\u6807\u5bf9\u8c61\u5e76\u8fd4\u56de\u7684\u8fc7\u7a0b\u4e3b\u8981\u901a\u8fc7\u4e24\u79cd\u6620\u5c04\u5f62\u5f0f\u5b9e\u73b0\uff1a 1. \u57fa\u4e8e Resu [&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-14308","post","type-post","status-publish","format-standard","hentry","category-mybatis"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14308","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=14308"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14308\/revisions"}],"predecessor-version":[{"id":14309,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14308\/revisions\/14309"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=14308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=14308"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=14308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}