{"id":14205,"date":"2023-12-04T00:48:10","date_gmt":"2023-12-03T16:48:10","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=14205"},"modified":"2023-12-04T00:49:17","modified_gmt":"2023-12-03T16:49:17","slug":"mybatis-shi-ru-he-jiang-sql-zhi-xing-jie-guo-feng","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\/","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":"

MyBatis \u5c06 SQL \u6267\u884c\u7ed3\u679c\u5c01\u88c5\u4e3a\u76ee\u6807\u5bf9\u8c61\u5e76\u8fd4\u56de\uff0c\u8fd9\u4e00\u8fc7\u7a0b\u4e3b\u8981\u901a\u8fc7 ResultMap \u8fdb\u884c\u5bf9\u8c61\u6620\u5c04\u3002ResultMap \u662f MyBatis \u4e2d\u7528\u6765\u5b9a\u4e49\u5982\u4f55\u5c01\u88c5\u67e5\u8be2\u7ed3\u679c\u7684\u89c4\u5219\u3002<\/p>\n

\u6620\u5c04\u5f62\u5f0f\uff1a<\/h3>\n
    \n
  1. \u57fa\u672c\u6620\u5c04\uff08Basic Mapping\uff09\uff1a<\/strong> \u5c06 SQL \u67e5\u8be2\u7684\u7ed3\u679c\u76f4\u63a5\u6620\u5c04\u5230 Java \u5bf9\u8c61\u7684\u5c5e\u6027\u4e0a\u3002\n

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

    <resultMap id=\"userResult\" type=\"User\">\n   <id property=\"id\" column=\"user_id\" \/>\n   <result property=\"username\" column=\"user_name\" \/>\n   <result property=\"email\" column=\"user_email\" \/>\n<\/resultMap>\n<\/code><\/pre>\n<\/li>\n
  2. \u5173\u8054\u6620\u5c04\uff08Association Mapping\uff09\uff1a<\/strong> \u5c06\u591a\u4e2a\u67e5\u8be2\u7ed3\u679c\u5173\u8054\u5230\u4e00\u4e2a\u5bf9\u8c61\u4e2d\uff0c\u901a\u5e38\u7528\u4e8e\u5904\u7406\u4e00\u5bf9\u4e00\u5173\u7cfb\u3002\n
    \u793a\u4f8b\uff1a<\/p>\n
    <resultMap id=\"blogResult\" type=\"Blog\">\n   <id property=\"id\" column=\"blog_id\"\/>\n   <result property=\"title\" column=\"blog_title\"\/>\n   <!-- \u5173\u8054\u67e5\u8be2 -->\n   <association property=\"author\" column=\"author_id\" javaType=\"Author\" select=\"selectAuthor\"\/>\n<\/resultMap>\n<\/code><\/pre>\n<\/li>\n
  3. \u96c6\u5408\u6620\u5c04\uff08Collection Mapping\uff09\uff1a<\/strong> \u5c06\u591a\u4e2a\u67e5\u8be2\u7ed3\u679c\u6620\u5c04\u5230\u4e00\u4e2a\u96c6\u5408\u5c5e\u6027\u4e2d\uff0c\u901a\u5e38\u7528\u4e8e\u5904\u7406\u4e00\u5bf9\u591a\u6216\u591a\u5bf9\u591a\u5173\u7cfb\u3002\n
    \u793a\u4f8b\uff1a<\/p>\n
    <resultMap id=\"blogResult\" type=\"Blog\">\n   <id property=\"id\" column=\"blog_id\"\/>\n   <result property=\"title\" column=\"blog_title\"\/>\n   <!-- \u96c6\u5408\u6620\u5c04 -->\n   <collection property=\"posts\" ofType=\"Post\" column=\"blog_id\" select=\"selectPostsForBlog\"\/>\n<\/resultMap>\n<\/code><\/pre>\n<\/li>\n<\/ol>\n
    \u6620\u5c04\u539f\u7406\uff1a<\/h3>\n
      \n
    1. \u89e3\u6790\u6620\u5c04\u914d\u7f6e\uff1a<\/strong> MyBatis \u5728\u89e3\u6790 Mapper XML \u6587\u4ef6\u65f6\u4f1a\u89e3\u6790 ResultMap \u914d\u7f6e\uff0c\u6839\u636e\u914d\u7f6e\u89c4\u5219\u83b7\u53d6\u6570\u636e\u5e93\u67e5\u8be2\u7ed3\u679c\u4e2d\u7684\u5b57\u6bb5\u540d\u548c\u5bf9\u5e94 Java \u5bf9\u8c61\u7684\u5c5e\u6027\u3002<\/p>\n<\/li>\n
    2. \n
      \u6620\u5c04\u5904\u7406\uff1a<\/strong> \u5f53\u6267\u884c\u67e5\u8be2\u8bed\u53e5\u5e76\u83b7\u53d6\u5230\u7ed3\u679c\u96c6\u65f6\uff0cMyBatis \u6839\u636e ResultMap \u7684\u914d\u7f6e\u4fe1\u606f\u5c06\u67e5\u8be2\u7ed3\u679c\u6620\u5c04\u5230\u5bf9\u5e94\u7684 Java \u5bf9\u8c61\u4e2d\u3002<\/p>\n<\/li>\n
    3. \n
      \u5bf9\u8c61\u5c01\u88c5\uff1a<\/strong> \u6839\u636e ResultMap \u4e2d\u7684\u914d\u7f6e\u89c4\u5219\uff0cMyBatis \u5c06\u67e5\u8be2\u7ed3\u679c\u4e2d\u7684\u5b57\u6bb5\u503c\u9010\u4e00\u6620\u5c04\u5230 Java \u5bf9\u8c61\u7684\u5c5e\u6027\u4e2d\uff0c\u5e76\u8fd4\u56de\u5c01\u88c5\u540e\u7684 Java \u5bf9\u8c61\u6216\u96c6\u5408\u3002<\/p>\n<\/li>\n<\/ol>\n
      ResultMap \u63d0\u4f9b\u4e86\u7075\u6d3b\u7684\u6620\u5c04\u914d\u7f6e\uff0c\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u5c06\u67e5\u8be2\u7ed3\u679c\u5c01\u88c5\u4e3a\u4e0d\u540c\u7ed3\u6784\u7684 Java \u5bf9\u8c61\uff0c\u9002\u5e94\u5404\u79cd\u590d\u6742\u7684\u67e5\u8be2\u9700\u6c42\uff0c\u5e76\u63d0\u4f9b\u4e86\u4e00\u5bf9\u4e00\u3001\u4e00\u5bf9\u591a\u3001\u591a\u5bf9\u591a\u7b49\u591a\u79cd\u6620\u5c04\u5f62\u5f0f\u6765\u6ee1\u8db3\u4e0d\u540c\u7684\u5173\u7cfb\u6620\u5c04\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
      MyBatis \u5c06 SQL \u6267\u884c\u7ed3\u679c\u5c01\u88c5\u4e3a\u76ee\u6807\u5bf9\u8c61\u5e76\u8fd4\u56de\uff0c\u8fd9\u4e00\u8fc7\u7a0b\u4e3b\u8981\u901a\u8fc7 ResultMap \u8fdb\u884c\u5bf9\u8c61\u6620\u5c04\u3002 […]<\/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-14205","post","type-post","status-publish","format-standard","hentry","category-mybatis"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14205","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=14205"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14205\/revisions"}],"predecessor-version":[{"id":14206,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14205\/revisions\/14206"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=14205"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=14205"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=14205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}