{"id":4102,"date":"2019-04-10T15:54:57","date_gmt":"2019-04-10T07:54:57","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=4102"},"modified":"2019-04-10T15:54:57","modified_gmt":"2019-04-10T07:54:57","slug":"%e8%af%a6%e8%a7%a3-mapperscan-%e6%b3%a8%e8%a7%a3%e5%92%8c-mapper-%e6%b3%a8%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=4102","title":{"rendered":"\u8be6\u89e3 @MapperScan \u6ce8\u89e3\u548c @Mapper \u6ce8\u89e3"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u6700\u8fd1\u516c\u53f8\u91cc\u7684\u4e00\u4e2a\u540c\u4e8b\uff0c\u7a81\u7136\u95ee\u6211\uff0c\u4e3a\u4ec0\u4e48\u6709\u7684\u9879\u76ee\u7528 @MapperScan\uff0c\u6709\u7684\u7528 @Mapper\uff1f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u544a\u8bc9\u4ed6\uff0c\u8fd9\u662f\u4e00\u4e2a\u597d\u95ee\u9898\uff0c\u8bf4\u660e\u4ed6\u601d\u8003\u4e86\u3002\u6c42\u77e5\u6b32\u671b\u5f88\u5f3a\uff0c\u770b\u597d\u4ed6\u7684\u524d\u9014\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\/8fa5dcfcgy1g1xladephbj20c406ygn0.jpg\" alt=\"\" \/><figcaption>\u6ce8\u89e3\u7684\u539f\u7406<\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9e\u9645\u4e0a\uff0c\u8fd9\u662f\u4e00\u4e2a\u975e\u5e38\u7b80\u5355\u7684\u95ee\u9898\u3002\u6211\u5e76\u6ca1\u6709\u4e00\u53e3\u56de\u7edd\u4ed6\uff0c\u8ba9\u4ed6\u53bb\u767e\u5ea6\u3002\u56e0\u4e3a\uff0c\u65b0\u4eba\u90fd\u4f1a\u7ecf\u5386\u8fd9\u4e2a\u8fc7\u7a0b\u3002\u597d\u4e0d\u5bb9\u6613\uff0c\u95ee\u4f60\u4e00\u6b21\uff0c\u4f60\u76f4\u63a5\u8ba9\u4ed6\u767e\u5ea6\uff0c\u4f1a\u6253\u51fb\u5230\u4ed6\u7684\u3002\u800c\u4e14\uff0c\u522b\u4eba\u4f1a\u89c9\u5f97\u4f60\u6446\u67b6\u5b50\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">@Mapper \u8fd9\u4e2a\u6ce8\u89e3\u7684\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@Documented\n@Inherited\n@Retention(RUNTIME)\n@Target({ TYPE, METHOD, FIELD, PARAMETER })\npublic @interface Mapper {\n  \/\/ Interface Mapper\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">@Mapper \u4e00\u822c\u6211\u4eec\u7528\u5728\u63a5\u53e3\u4e0a\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@Mapper\npublic interface UserDAO {\n    @Select(\"select * from user where name = #{name}\")\n    User find(String name);\n    @Select(\"select * from user where name = #{name} and pwd = #{pwd}\")\n    \/**\n      * \u5bf9\u4e8e\u591a\u4e2a\u53c2\u6570\u6765\u8bf4\uff0c\u6bcf\u4e2a\u53c2\u6570\u4e4b\u524d\u90fd\u8981\u52a0\u4e0a@Param\u6ce8\u89e3\uff0c\n      * \u8981\u4e0d\u7136\u4f1a\u627e\u4e0d\u5230\u5bf9\u5e94\u7684\u53c2\u6570\u8fdb\u800c\u62a5\u9519\n      *\/\n    User login(@Param(\"name\")String name, @Param(\"pwd\")String pwd);\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528 @Mapper\uff0c\u6700\u7ec8 Mybatis \u4f1a\u6709\u4e00\u4e2a\u62e6\u622a\u5668\uff0c\u4f1a\u81ea\u52a8\u7684\u628a @Mapper \u6ce8\u89e3\u7684\u63a5\u53e3\u751f\u6210\u52a8\u6001\u4ee3\u7406\u7c7b\u3002\u8fd9\u70b9\u53ef\u4ee5\u5728 MapperRegistry \u7c7b\u4e2d\u7684\u6e90\u4ee3\u7801\u4e2d\u67e5\u770b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">@Mapper \u6ce8\u89e3\u9488\u5bf9\u7684\u662f\u4e00\u4e2a\u4e00\u4e2a\u7684\u7c7b\uff0c\u76f8\u5f53\u4e8e\u662f\u4e00\u4e2a\u4e00\u4e2a Mapper.xml \u6587\u4ef6\u3002\u800c\u4e00\u4e2a\u63a5\u53e3\u4e00\u4e2a\u63a5\u53e3\u7684\u4f7f\u7528 @Mapper\uff0c\u592a\u9ebb\u70e6\u4e86\uff0c\u4e8e\u662f @MapperScan \u5c31\u5e94\u7528\u800c\u751f\u4e86\u3002@MapperScan \u914d\u7f6e\u4e00\u4e2a\u6216\u591a\u4e2a\u5305\u8def\u5f84\uff0c\u81ea\u52a8\u7684\u626b\u63cf\u8fd9\u4e9b\u5305\u8def\u5f84\u4e0b\u7684\u7c7b\uff0c\u81ea\u52a8\u7684\u4e3a\u5b83\u4eec\u751f\u6210\u4ee3\u7406\u7c7b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@SpringBootApplication  \n@MapperScan({\"com.xttblog.mapper\",\"com.xttblog.dao\"})\npublic class XttblogApp {  \n    public static void main(String[] args) {  \n       SpringApplication.run(XttblogApp.class, args);  \n    }  \n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u4f7f\u7528\u4e86 @MapperScan \u6ce8\u89e3\uff0c\u5c06\u4f1a\u751f\u6210 MapperFactoryBean\uff0c \u5982\u679c\u6ca1\u6709\u6807\u6ce8 @MapperScan \u4e5f\u5c31\u662f\u6ca1\u6709 MapperFactoryBean \u7684\u5b9e\u4f8b\uff0c\u5c31\u8d70 @Import \u91cc\u9762\u7684\u914d\u7f6e\uff0c\u5177\u4f53\u53ef\u4ee5\u5728 AutoConfiguredMapperScannerRegistrar \u548c MybatisAutoConfiguration \u7c7b\u4e2d\u67e5\u770b\u6e90\u4ee3\u7801\u8fdb\u884c\u5206\u6790\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7531\u6b64\u53ef\u89c1\uff0c\u52a8\u6001\u4ee3\u7406\u548c AOP \u77e5\u8bc6\u975e\u5e38\u7684\u91cd\u8981\uff0c\u5404\u79cd\u6846\u67b6\u90fd\u5728\u5927\u91cf\u7684\u4f7f\u7528\u3002<\/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=4102\">\u8be6\u89e3 @MapperScan \u6ce8\u89e3\u548c @Mapper \u6ce8\u89e3<\/a><\/p><!-- <div class=\"bd-reward-stl\"><button id=\"bdRewardBtn\"><span><\/span><\/button><\/div> -->","protected":false},"excerpt":{"rendered":"<p>\u6700\u8fd1\u516c\u53f8\u91cc\u7684\u4e00\u4e2a\u540c\u4e8b\uff0c\u7a81\u7136\u95ee\u6211\uff0c\u4e3a\u4ec0\u4e48\u6709\u7684\u9879\u76ee\u7528 @MapperScan\uff0c\u6709\u7684\u7528 @Mapper\uff1f \u6211\u544a\u8bc9\u4ed6\uff0c [&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":[1958,1959,1037,587,1045],"class_list":["post-4102","post","type-post","status-publish","format-standard","hentry","category-java","tag-mapper","tag-mapperscan","tag-mybatis","tag-spring-boot","tag-1045"],"_links":{"self":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/4102","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=4102"}],"version-history":[{"count":1,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/4102\/revisions"}],"predecessor-version":[{"id":4103,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/4102\/revisions\/4103"}],"wp:attachment":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}