{"id":14224,"date":"2023-12-04T00:56:04","date_gmt":"2023-12-03T16:56:04","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=14224"},"modified":"2023-12-04T00:57:09","modified_gmt":"2023-12-03T16:57:09","slug":"mybatis-zai-mapper-zhong-ru-he-chuan-di-duo-ge-can","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/mybatis-zai-mapper-zhong-ru-he-chuan-di-duo-ge-can\/","title":{"rendered":"MyBatis \u5728 mapper \u4e2d\u5982\u4f55\u4f20\u9012\u591a\u4e2a\u53c2\u6570\uff1f"},"content":{"rendered":"<p>\u5728 MyBatis \u7684 Mapper \u4e2d\u4f20\u9012\u591a\u4e2a\u53c2\u6570\u6709\u51e0\u79cd\u65b9\u5f0f\uff0c\u5e38\u7528\u7684\u65b9\u5f0f\u5305\u62ec\uff1a<\/p>\n<h3><a id=\"1%E4%BD%BF%E7%94%A8-param%E6%B3%A8%E8%A7%A3%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>1. \u4f7f\u7528 <code>@Param<\/code> \u6ce8\u89e3\uff1a<\/h3>\n<pre><code class=\"language-java\">@Select(&quot;SELECT * FROM users WHERE name = #{name} AND age = #{age}&quot;)\nList&lt;User&gt; getUsersByNameAndAge(@Param(&quot;name&quot;) String name, @Param(&quot;age&quot;) int age);\n<\/code><\/pre>\n<h3><a id=\"2%E4%BD%BF%E7%94%A8-map%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>2. \u4f7f\u7528 Map\uff1a<\/h3>\n<pre><code class=\"language-java\">@Select(&quot;SELECT * FROM users WHERE name = #{name} AND age = #{age}&quot;)\nList&lt;User&gt; getUsersByNameAndAge(Map&lt;String, Object&gt; params);\n<\/code><\/pre>\n<h3><a id=\"3%E4%BD%BF%E7%94%A8-java%E5%AF%B9%E8%B1%A1%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>3. \u4f7f\u7528 Java \u5bf9\u8c61\uff1a<\/h3>\n<pre><code class=\"language-java\">public class UserQuery {\n    private String name;\n    private int age;\n    \/\/ getters and setters\n}\n<\/code><\/pre>\n<pre><code class=\"language-java\">@Select(&quot;SELECT * FROM users WHERE name = #{name} AND age = #{age}&quot;)\nList&lt;User&gt; getUsersByQuery(UserQuery query);\n<\/code><\/pre>\n<p>\u8fd9\u4e9b\u65b9\u5f0f\u90fd\u80fd\u591f\u5728 Mapper \u4e2d\u4f20\u9012\u591a\u4e2a\u53c2\u6570\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u6839\u636e\u9700\u6c42\u9009\u62e9\u6700\u9002\u5408\u7684\u65b9\u5f0f\u6765\u4f20\u9012\u53c2\u6570\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 MyBatis \u7684 Mapper \u4e2d\u4f20\u9012\u591a\u4e2a\u53c2\u6570\u6709\u51e0\u79cd\u65b9\u5f0f\uff0c\u5e38\u7528\u7684\u65b9\u5f0f\u5305\u62ec\uff1a 1. \u4f7f\u7528 @Param \u6ce8 [&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-14224","post","type-post","status-publish","format-standard","hentry","category-mybatis"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14224","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=14224"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14224\/revisions"}],"predecessor-version":[{"id":14225,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14224\/revisions\/14225"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=14224"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=14224"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=14224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}