{"id":6930,"date":"2022-08-19T10:52:53","date_gmt":"2022-08-19T02:52:53","guid":{"rendered":"http:\/\/123.57.164.21\/?p=6930"},"modified":"2022-08-19T11:04:32","modified_gmt":"2022-08-19T03:04:32","slug":"mybatis%e7%9a%84-resultmap%e4%b8%ad-id-%e6%a0%87%e7%ad%be%e7%9a%84%e4%bd%9c%e7%94%a8","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=6930","title":{"rendered":"Mybatis\u7684< resultMap>\u4e2d < id> \u6807\u7b7e\u7684\u4f5c\u7528"},"content":{"rendered":"\n<p><strong>resultMap\u7684\u4f5c\u7528<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><code>&lt;resultMap&gt;\u6807\u7b7e<\/code>\u7528\u4e8e\u5c01\u88c5sql\u7684\u67e5\u8be2\u7ed3\u679c\uff0c\u53ef\u4ee5\u5305\u88c5\u6210\u4e00\u4e2a\u7b80\u5355<strong>POJO<\/strong>\u5bf9\u8c61\uff0c\u4e5f\u53ef\u4ee5\u5305\u88c5\u6210\u6211\u4eec\u81ea\u5b9a\u4e49\u7684\u5bf9\u8c61\uff0c\u53ea\u8981\u6211\u4eec\u4f7f\u7528<code>&lt;result&gt;\u5b50\u6807\u7b7e<\/code>\u6307\u5b9a\u597d\u67e5\u8be2\u7ed3\u679c\u7684\u5217\u548c\u5bf9\u8c61\u7684\u5c5e\u6027\u4e4b\u95f4\u7684\u5bf9\u5e94\u5173\u7cfb\u5c31\u597d\u4e86\u3002<\/p>\n\n\n\n<p><strong>\u5b98\u65b9\u539f\u56e0<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;id property=\"id\" column=\"id\"\/><\/pre>\n\n\n\n<p>\u662f\u7528\u4e8e\u63d0\u9ad8\u6027\u80fd\uff0c\u4f46\u662f\u5728\u4e00\u4e9b\u60c5\u51b5\u4e0b\uff0c\u6ca1\u6709Id\u7684\u8bdd\u7ed3\u679c\u4f1a\u51fa\u9519\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u5bf9 id\u6807\u7b7e\u7684\u7406\u89e3\u662f\uff0c\u5b83\u914d\u7f6e\u7684\u5b57\u6bb5\u4e3a\u8868\u7684\u4e3b\u952e\uff08\u8054\u5408\u4e3b\u952e\u65f6\u53ef\u4ee5\u914d\u7f6e\u591a\u4e2a id \u6807\u7b7e\uff09\uff0c\u56e0\u4e3amyBatis \u4e2dresultMap \u53ea\u7528\u4e8e\u914d\u7f6e\u7ed3\u679c\u5982\u4f55\u6620\u5c04\uff0c\u5e76\u4e0d\u77e5\u9053\u8fd9\u4e2a\u8868\u5177\u4f53\u5982\u4f55\u3002 id \u7684\u552f\u4e00\u4f5c\u7528\u5c31\u662f\u5728\u5d4c\u5957\u7684\u6620\u5c04\u914d\u7f6e\u4e2d\u5224\u65ad\u6570\u636e\u662f\u5426\u76f8\u540c\uff0c\u5f53\u914d\u7f6eid\u6807\u7b7e\u65f6\uff0c Mybatis\u53ea\u9700\u8981\u9010\u6761\u6bd4\u8f83\u6240\u6709\u6570\u636e\u4e2d id \u6807\u7b7e\u914d\u7f6e\u7684\u5b57\u6bb5\u503c\u662f\u5426\u76f8\u540c\u5373\u53ef\u3002\u5728\u914d\u7f6e\u5d4c\u5957\u7ed3\u679c\u67e5\u8be2\u65f6\uff0c\u914d\u7f6e id \u6807\u7b7e\u53ef\u4ee5\u63d0\u9ad8\u5904\u7406\u6548\u7387\u3002 \u8fd9\u6837\u4e00\u6765\uff0c\u5982\u679c\u6709\u4e24\u6761\u6570\u636e userMap \u90e8\u5206\u7684id\u76f8\u540c \u6240\u4ee5\u5b83\u4eec\u5c5e\u4e8e\u540c\u4e00\u4e2a\u7528\u6237\uff0c\u56e0\u6b64\u8fd9\u6761\u6570\u636e\u4f1a\u5408\u5e76\u5230\u540c\u4e00\u4e2a\u7528\u6237\u4e2d\u3002id\u6807\u7b7e\u7684\u8bbe\u7f6e\u8fd8\u662f\u5f88\u6709\u5fc5\u8981\u7684\uff0c\u5982\u679c\u4ec5\u7531resultMap\u6807\u7b7e\u5b8c\u6210\uff0c\u5f53\u5b58\u5728\u591a\u6761\u6570\u636e\u7ed3\u679c\u662f\uff0c\u67e5\u8be2\u65f6\u95f4\u4f1a\u5341\u5206\u7684\u957f\uff0c\u8fd9\u65f6id\u6807\u7b7e\u8bbe\u7f6e\u5c31\u663e\u5f97\u5341\u5206\u7684\u6709\u5fc5\u8981\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/08\/image-6-1024x406.png\" alt=\"\" class=\"wp-image-6931\" width=\"557\" height=\"221\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-6-1024x406.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-6-300x119.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-6-768x305.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-6-830x329.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-6-230x91.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-6-350x139.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-6-480x190.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-6.png 1266w\" sizes=\"(max-width: 557px) 100vw, 557px\" \/><\/figure><\/div>\n\n\n\n<p><strong>\u4f8b\u5b501<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>id\u662fresultMap\u4ee5\u53caCollection\u7684\u5b50\u6807\u7b7e\uff0c\u6807\u8bb0\u51fa\u4f5c\u4e3a ID \u7684\u7ed3\u679c\u53ef\u4ee5\u5e2e\u52a9\u63d0\u9ad8\u6574\u4f53\u6027\u80fd\u3002<strong>\u7279\u522b\u6ce8\u610f\u7684\u662f\uff0cid\u662f\u5f53\u524d\u547d\u540d\u7a7a\u95f4\u4e2d\u7684\u4e00\u4e2a\u552f\u4e00\u6807\u8bc6\uff0c\u7528\u4e8e\u6807\u8bc6\u4e00\u4e2a\u7ed3\u679c\u6620\u5c04\u3002<\/strong><\/p>\n\n\n\n<p>\u5982\u4e0b\u56fe\uff0citemId\uff08\u5546\u54c1id\uff09\u5b57\u6bb5\u503c\u5728\u6570\u636e\u5e93\u4e2d\u4e0d\u552f\u4e00\uff0c\u9519\u8bef\u4f7f\u7528\u4f1a\u5bfc\u81f4\u53ea\u8fd4\u56de\u8be5\u8ba2\u5355\u67d0\u5546\u54c1\u7684\u4e00\u6761\u8bb0\u5f55\u3002\u56e0\u4e3a\u5bf9\u4e8e\u67d0\u4e2a\u5546\u54c1\uff0c\u9ebb\u8fa3\u5473\u548c\u4e94\u9999\u5473\u53ea\u662f\u5546\u54c1\u89c4\u683c\uff0c\u5176\u5546\u54c1id\u662f\u76f8\u540c\u7684\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/08\/image-9-1024x563.png\" alt=\"\" class=\"wp-image-6937\" width=\"556\" height=\"305\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-9-1024x563.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-9-300x165.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-9-768x422.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-9-1536x844.png 1536w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-9-830x456.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-9-230x126.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-9-350x192.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-9-480x264.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-9.png 1594w\" sizes=\"(max-width: 556px) 100vw, 556px\" \/><\/figure><\/div>\n\n\n\n<p><strong>\u4f8b\u5b502<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>MyBatis\u7684resultMap\u53ea\u7528\u4e8e\u914d\u7f6e\u7ed3\u679c\u5982\u4f55\u6620\u5c04\uff0cid\u7684\u552f\u4e00\u4f5c\u7528\u5c31\u662f\u5728\u5d4c\u5957\u7684\u6620\u5c04\u914d\u7f6e\u65f6\u5224\u65ad\u6570\u636e\u662f\u5426\u76f8\u540c\uff0c\u5f53\u914d\u7f6eid\u6807\u7b7e\u65f6\uff0cMyBatis\u53ea\u9700\u8981\u9010\u6761\u6bd4\u8f83\u6240\u6709\u6570\u636e\u4e2did\u6807\u7b7e\u5b57\u6bb5\u503c\u662f\u5426\u76f8\u540c\u5373\u53ef\uff0c\u53ef\u4ee5\u63d0\u9ad8\u5904\u7406\u6548\u7387\u3002<br>\u4e3a\u4e86\u66f4\u6e05\u695a\u5730\u7406\u89e3id \u7684\u4f5c\u7528\uff0c\u53ef\u4ee5\u4e34\u65f6\u5bf9userMap \u7684\u6620\u5c04\u8fdb\u884c\u5982\u4e0b\u4fee\u6539\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;resultMap id=\"userMap\" type=\"test.mybatis.simple.model.SysUser\">\n&lt;id property=\"userPassword\" column=\"user_password\"\/>\n&lt;result property=\"userName\" column=\"user_name\">&lt;\/result>\n&lt;result property=\"id\" column=\"id\">&lt;\/result>\n&lt;result property=\"userEmail\" column=\"user_email\">&lt;\/result>\n&lt;result property=\"userInfo\" column=\"user_info\">&lt;\/result>\n&lt;result property=\"headImg\" column=\"head_img\" jdbcType=\"BLOB\">&lt;\/result>\n&lt;result property=\"createTime\" column=\"create_time\" jdbcType=\"TIMESTAMP\">&lt;\/result>\n&lt;\/resultMap>\n&lt;resultMap id=\"userRoleListMap\" extends=\"userMap\" type=\"SysUser\">\n&lt;collection property=\"roleList\" columnPrefix=\"role_\" resultMap=\"test.mybatis.simple.mapper.RoleMapper.roleMap\"\/>\n&lt;\/resultMap><\/pre>\n\n\n\n<p>\u5728\u6d4b\u8bd5\u6570\u636e\u4e2d\uff0c\u7528\u6237\u7684\u5bc6\u7801\u90fd\u662f123456 \uff0c\u56e0\u6b64\u5982\u679c\u7528\u5bc6\u7801\u4f5c\u4e3aid\uff0c\u6240\u6709\u7ed3\u679c\u5c06\u5408\u5e76\u4e3a1\u6761\u6570\u636e\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\u7528\u6237\u6570\uff1a 1\n\u7528\u6237\u540d\uff1aadmin\n\u89d2\u8272\u540d\uff1a\u7ba1\u7406\u5458\n\u89d2\u8272\u540d\uff1a\u666e\u901a\u7528\u6237<\/pre>\n\n\n\n<p>\u5bf9\u6bd4\u4e4b\u524d\u7684\u6b63\u786e\u7ed3\u679c\uff0c\u53ef\u4ee5\u770b\u5230\u89d2\u8272\u8bb0\u5f55\u4e5f\u5408\u5e76\u4e86<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\u7528\u6237\u6570\uff1a2\n\u7528\u6237\u540d\uff1aadmin\n\u89d2\u8272\u540d\u79f0\uff1a\u7ba1\u7406\u5458\n\u89d2\u8272\u540d\u79f0\uff1a\u666e\u901a\u7528\u6237\n\u7528\u6237\u540d\uff1atest\n\u89d2\u8272\u540d\u79f0\uff1a\u666e\u901a\u7528\u6237<\/pre>\n\n\n\n<ul><li>id\u6807\u7b7e\u4e5f\u53ef\u4ee5\u914d\u7f6e\u591a\u4e2a\uff0c\u6bd4\u5982\u8054\u5408\u4e3b\u952e\u65f6<\/li><li>\u5f88\u53ef\u80fd\u4e5f\u4f1a\u51fa\u73b0\u6ca1\u6709\u914d\u7f6eid\u7684\u60c5\u51b5\uff0c\u8fd9\u65f6MyBatis\u5c31\u4f1a\u628aresultMap\u4e2d\u6240\u6709\u5b57\u6bb5\u8fdb\u884c\u6bd4\u8f83\uff0c\u5982\u679c\u6240\u6709\u5b57\u6bb5\u7684\u503c\u90fd\u76f8\u540c\u5c31\u5408\u5e76\uff0c\u53ea\u8981\u6709\u4e00\u4e2a\u5b57\u6bb5\u503c\u4e0d\u540c\uff0c\u5c31\u4e0d\u5408\u5e76\u3002\u8fd9\u65f6\uff0c\u5f53\u7ed3\u679c\u96c6\u5b57\u6bb5\u6570\u4e3aM\uff0c\u8bb0\u5f55\u6570N\uff0c\u6700\u5c11M\u00d7N\u6b21\u6bd4\u8f83\uff0c\u76f8\u6bd4\u914d\u7f6eid\u65f6\u7684N\u6b21\u6bd4\u8f83\uff0c\u6548\u7387\u76f8\u5dee\u66f4\u591a\uff0c\u6240\u4ee5\u8981\u5c3d\u53ef\u80fd\u914d\u7f6eid\u6807\u7b7e\u3002<\/li><li>\u5728\u5d4c\u5957\u7ed3\u679c\u914d\u7f6eid\u5c5e\u6027\u65f6\u5982\u679c\u67e5\u8be2\u8bed\u53e5\u4e2d\u6ca1\u6709\u67e5\u8be2id\u5c5e\u6027\u914d\u7f6e\u7684\u5217\uff0c\u5c31\u4f1a\u5bfc\u81f4id\u5bf9\u5e94\u7684\u503c\u4e3anull\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6240\u6709\u503c\u7684id\u90fd\u76f8\u540c\uff0c\u56e0\u6b64\u4f1a\u4f7f\u5d4c\u5957\u7684\u96c6\u5408\u4e2d\u53ea\u6709\u4e00\u6761\u6570\u636e\u3002\u6240\u4ee5\u5728\u914d\u7f6eid\u5217\u65f6\uff0c\u67e5\u8be2\u8bed\u53e5\u4e2d\u5fc5\u987b\u5305\u542b\u8be5\u5217\u3002<\/li><\/ul>\n\n\n\n<p><strong>\u4f8b\u5b503<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u7ed9\u51fa\u8fd9\u6837\u4e00\u4e2a\u573a\u666f\uff0csql\u67e5\u8be2\u6bcf\u4e2a\u56fd\u5bb6\u4e0b\u7684\u7528\u6237\u6570\uff0c\u7b2c\u4e00\u5217\u662f\u7528\u6237\u6570\uff0c\u540e\u9762\u4e09\u5217\u662f\u4e00\u4e2a\u56fd\u5bb6\u5bf9\u8c61\u6240\u542b\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/08\/image-7.png\" alt=\"\" class=\"wp-image-6932\" width=\"320\" height=\"265\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-7.png 456w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-7-300x249.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-7-230x191.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-7-350x290.png 350w\" sizes=\"(max-width: 320px) 100vw, 320px\" \/><\/figure><\/div>\n\n\n\n<p>\u73b0\u5728\u6211\u8981\u628a\u7ed3\u679c\u96c6\u5c01\u88c5\u6210\u5982\u4e0b\u81ea\u5b9a\u4e49\u7684\u5bf9\u8c61\u96c6\u5408\u3002<br>\u5176\u4e2d\u7684Country\u662f\u4e00\u4e2a\u7b80\u5355\u7c7b\uff0c\u6709\u4e09\u4e2a\u5c5e\u6027\uff0c\u548c\u4e0a\u56fe\u67e5\u8be2\u7ed3\u679c\u7684\u540e\u4e09\u5217\u540c\u540d\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">public class MyCountResult {\n   private Long count;\n   private Country country;\n    }\n<\/pre>\n\n\n\n<p>\u5728mapper\u6587\u4ef6\u4e2d\u81ea\u5b9a\u4e49resultMap(\u7ea2\u8272\u662f\u56e0\u4e3a\u7701\u7565\u4e86\u5f88\u957f\u7684\u9650\u5b9a\u540d)<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/123.57.164.21\/wp-content\/uploads\/2022\/08\/image-8-1024x109.png\" alt=\"\" class=\"wp-image-6933\" width=\"657\" height=\"70\" srcset=\"https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-8-1024x109.png 1024w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-8-300x32.png 300w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-8-768x82.png 768w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-8-830x88.png 830w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-8-230x24.png 230w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-8-350x37.png 350w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-8-480x51.png 480w, https:\/\/92it.top\/wp-content\/uploads\/2022\/08\/image-8.png 1300w\" sizes=\"(max-width: 657px) 100vw, 657px\" \/><\/figure><\/div>\n\n\n\n<p>\u8fd9\u6837\u786e\u5b9e\u80fd\u628a\u4e0a\u9762sql\u67e5\u8be2\u56fe\u7684\u7ed3\u679c\u5c01\u88c5\u6210 <strong>MyCountResult<\/strong> \u7c7b<\/p>\n\n\n\n<ul><li>\u5217count \u5bf9\u5e94 \u7c7b\u7684count\u5c5e\u6027<\/li><li>\u5269\u4e0b\u7684\u5217 \u5bf9\u5e94 \u7c7b\u7684coutry\u5d4c\u5957\u7c7b (\u8fd9\u91cc\u7684\u5217\u4e5f\u590d\u7528\u4e86\u522b\u7684resultMap)<\/li><\/ul>\n\n\n\n<p>\u4f46\u662f \u8fd4\u56de\u7684MyCountResult \u5bf9\u8c61\u5374\u53ea\u67093\u4e2a\uff0c\u800c\u4e0d\u662f\u4e0a\u9762\u67e5\u8be2\u7ed3\u679c\u56fe\u4e2d\u7684\u5341\u51e0\u4e2a\u3002<br>\u8c03\u8bd5\u53d1\u73b0\uff0ccount\u4e3a0\u7684\u5bf9\u8c61\u53ea\u67091\u4e2a\uff01<br>\u8fd9\u91cc\u662f\u4e3a\u4ec0\u4e48\u5462\uff1f<\/p>\n\n\n\n<p>\u539f\u56e0\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;collection>\u6807\u7b7e,\u7528\u4e8e\u5305\u88c5\u6210\u96c6\u5408\uff0c\u9ed8\u8ba4\u628aid\u76f8\u540c\u7684\u5c01\u88c5\u5728\u540c\u4e00\u4e2a\u96c6\u5408\u5185<\/pre>\n\n\n\n<p>\u5728\u8fd9\u91cc\uff0c\u7531\u4e8e\u6ca1\u6709\u6307\u5b9a &lt; id &gt; \u6807\u7b7e\uff0c\u5bfc\u81f4mybatis\u628a\u6211\u7684count\u5217\u5f53\u6210\u4e86id\uff0c\u800c\u5f88\u4e0d\u5e78\uff0ccount\u5217\u6709\u5f88\u591a\u91cd\u590d\u76840\uff0c\u6240\u4ee5\u628a\u6240\u6709count\u4e3a0\u7684\u884c\u5c01\u88c5\u6210\u4e86\u4e00\u4e2a\u96c6\u5408\uff0c\u6ce8\u5165\u5230MyCountResult\u7c7b\u4e2d\uff0c\u4f46\u662f\u8fd9\u4e2a\u7c7b\u4e2d\u7684country\u5c5e\u6027\u4e0d\u662f\u4e00\u4e2a\u6570\u7ec4\uff0c\u6240\u4ee5mybatis\u53ea\u80fd\u628a\u521a\u624d\u7684\u96c6\u5408\u4e2d\u7684\u5176\u4e2d\u4e00\u4e2a\u6ce8\u5165\u6210country\u5c5e\u6027\u3002<br><\/p>\n\n\n\n<p><strong>\u7ed3\u8bed\u4e0e\u53cd\u601d\uff1a<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u65e2\u7136\u5b98\u65b9\u8981\u6211\u4eec\u52a0\u5165 id \u6807\u7b7e\uff0c\u65e0\u8bba\u662f\u6027\u80fd\u8fd8\u662f\u6b63\u786e\u6027\uff0c\u6211\u4eec\u90fd\u5e94\u8be5\u52a0\u5165\u6b64\u6807\u7b7e\u3002<br>\u800c\u4e14\u4f5c\u4e3aid\u7684\u5217\u4e2d\u7684\u503c\u5fc5\u987b\u662f\u552f\u4e00\u7684\uff0c\u4e5f\u5c31\u662f\u53ef\u4ee5\u552f\u4e00\u6807\u8bc6\u8fd9\u4e00\u884c\uff0c\u4f8b\u5982\u521a\u624d\u6211\u7684count\u5217\u5c31\u6709\u5f88\u591a\u76f8\u540c\u76840\uff0c\u4e5f\u5c31\u5931\u53bb\u4e86id\u8fd9\u4e2a\u8bcd\u7684\u610f\u4e49\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>resultMap\u7684\u4f5c\u7528 &lt;resultMap&gt;\u6807\u7b7e\u7528\u4e8e\u5c01\u88c5sql\u7684\u67e5\u8be2\u7ed3\u679c\uff0c\u53ef\u4ee5\u5305\u88c5\u6210\u4e00\u4e2a\u7b80\u5355P [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/6930"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6930"}],"version-history":[{"count":4,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/6930\/revisions"}],"predecessor-version":[{"id":6938,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/6930\/revisions\/6938"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6930"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6930"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6930"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}