{"id":14181,"date":"2023-12-04T00:30:09","date_gmt":"2023-12-03T16:30:09","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=14181"},"modified":"2023-12-04T00:31:15","modified_gmt":"2023-12-03T16:31:15","slug":"mybatis-de-mapper-bian-xie-you-na-ji-zhong-fang-sh","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/mybatis-de-mapper-bian-xie-you-na-ji-zhong-fang-sh\/","title":{"rendered":"MyBatis \u7684 Mapper \u7f16\u5199\u6709\u54ea\u51e0\u79cd\u65b9\u5f0f\uff1f"},"content":{"rendered":"

MyBatis \u7684 Mapper \u7f16\u5199\u65b9\u5f0f\u4e3b\u8981\u6709\u4e09\u79cd\uff1a<\/p>\n

1. XML \u6587\u4ef6\u65b9\u5f0f<\/h3>\n

\u901a\u8fc7 XML \u6587\u4ef6\u7f16\u5199 Mapper\uff0c\u5c06 SQL \u8bed\u53e5\u548c Java \u65b9\u6cd5\u8fdb\u884c\u6620\u5c04\u3002XML \u6587\u4ef6\u4e2d\u5b9a\u4e49\u4e86 SQL \u8bed\u53e5\u548c\u53c2\u6570\u6620\u5c04\u5173\u7cfb\u3002<\/p>\n

\u793a\u4f8b\uff1a<\/p>\n

<!-- UserMapper.xml -->\n<mapper namespace=\"com.example.UserMapper\">\n    <select id=\"getUserById\" resultType=\"com.example.User\">\n        SELECT * FROM users WHERE id = #{id}\n    <\/select>\n<\/mapper>\n<\/code><\/pre>\n
2. \u6ce8\u89e3\u65b9\u5f0f<\/h3>\n
\u5728 Java \u63a5\u53e3\u65b9\u6cd5\u4e0a\u4f7f\u7528\u6ce8\u89e3\u6765\u6620\u5c04 SQL \u8bed\u53e5\uff0c\u901a\u8fc7\u6ce8\u89e3\u76f4\u63a5\u6307\u5b9a SQL \u8bed\u53e5\u548c\u53c2\u6570\u6620\u5c04\u3002<\/p>\n
\u793a\u4f8b\uff1a<\/p>\n
\/\/ UserMapper.java\npublic interface UserMapper {\n    @Select(\"SELECT * FROM users WHERE id = #{id}\")\n    User getUserById(int id);\n}\n<\/code><\/pre>\n
3. Mix\uff08\u6df7\u5408\uff09\u65b9\u5f0f<\/h3>\n
\u6df7\u5408\u4f7f\u7528 XML \u6587\u4ef6\u548c\u6ce8\u89e3\u7684\u65b9\u5f0f\u7f16\u5199 Mapper\u3002\u901a\u5e38\u662f\u5c06\u4e00\u4e9b\u590d\u6742\u7684 SQL \u8bed\u53e5\u6216\u52a8\u6001 SQL \u5199\u5728 XML \u6587\u4ef6\u4e2d\uff0c\u7b80\u5355\u7684\u67e5\u8be2\u53ef\u4ee5\u4f7f\u7528\u6ce8\u89e3\u65b9\u5f0f\u3002<\/p>\n
\u793a\u4f8b\uff1a<\/p>\n
\/\/ UserMapper.java\n@Mapper\npublic interface UserMapper {\n    User getUserById(int id); \/\/ \u4f7f\u7528\u6ce8\u89e3\u65b9\u5f0f\n\n    \/\/ \u4f7f\u7528 XML \u6587\u4ef6\n    List<User> searchUsers(@Param(\"name\") String name, @Param(\"age\") int age);\n}\n<\/code><\/pre>\n
\u8fd9\u4e09\u79cd\u65b9\u5f0f\u5404\u6709\u4f18\u52a3\uff0cXML \u65b9\u5f0f\u9002\u5408\u590d\u6742\u7684 SQL \u8bed\u53e5\u548c\u53c2\u6570\u6620\u5c04\uff1b\u6ce8\u89e3\u65b9\u5f0f\u7b80\u6d01\u76f4\u89c2\uff0c\u9002\u5408\u7b80\u5355\u7684\u67e5\u8be2\uff1bMix \u65b9\u5f0f\u5219\u53ef\u4ee5\u6839\u636e\u9700\u8981\u7075\u6d3b\u9009\u62e9\u4f7f\u7528\u54ea\u79cd\u65b9\u5f0f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
MyBatis \u7684 Mapper \u7f16\u5199\u65b9\u5f0f\u4e3b\u8981\u6709\u4e09\u79cd\uff1a 1. XML \u6587\u4ef6\u65b9\u5f0f \u901a\u8fc7 XML \u6587\u4ef6\u7f16\u5199 Map […]<\/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-14181","post","type-post","status-publish","format-standard","hentry","category-mybatis"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14181","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=14181"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14181\/revisions"}],"predecessor-version":[{"id":14182,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14181\/revisions\/14182"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=14181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=14181"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=14181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}