{"id":869,"date":"2021-08-24T21:12:03","date_gmt":"2021-08-24T13:12:03","guid":{"rendered":"https:\/\/fireinsect.top\/?p=869"},"modified":"2021-10-06T08:04:52","modified_gmt":"2021-10-06T00:04:52","slug":"mybatis%e5%9f%ba%e7%a1%80%ef%bc%88ssm%e6%a1%86%e6%9e%b6%ef%bc%89","status":"publish","type":"post","link":"https:\/\/fireinsect.top\/index.php\/2021\/08\/24\/mybatis%e5%9f%ba%e7%a1%80%ef%bc%88ssm%e6%a1%86%e6%9e%b6%ef%bc%89\/","title":{"rendered":"MyBatis\u57fa\u7840\uff08SSM\u6846\u67b6\uff09"},"content":{"rendered":"\n

\u5728\u5f53\u4e0b MyBatis \u5df2\u7ecf\u662f\u6700\u4e3b\u6d41\u7684\u6301\u4e45\u5c42\u6846\u67b6\uff0c\u5177\u4f53\u4e00\u70b9\u5c31\u662f\u64cd\u4f5c\u6570\u636e\u5e93\u7684\u6846\u67b6;MyBatis \u975e\u5e38\u8f7b\u91cf\uff0c\u53ea\u9700\u8981\u901a\u8fc7\u7b80\u5355\u7684XML\u6216\u8005\u6ce8\u89e3\u5c31\u53ef\u4ee5\u5b8c\u6210\u6570\u636e\u6620\u5c04\u548c\u64cd\u4f5c\u6570\u636e\u3002<\/p>\n\n\n\n

\u5f88\u591a\u516c\u53f8\u90fd\u91c7\u7528 MyBatis \u4f5c\u4e3a Java \u7684\u6301\u4e45\u5c42\u6846\u67b6\uff0c\u4e3b\u8981\u7684\u539f\u56e0\u5728\u4e8e\u5b83\u53ef\u4ee5\u7075\u6d3b\u7684\u81ea\u5b9a\u4e49SQL\u53c8\u517c\u5177ORM\u6846\u67b6\u7684\u7279\u6027\u3002<\/p>\n\n\n\n\n\n\n\n

Spring\u4f9d\u8d56: Spring Web\u3001MyBatis Framework\u3001MySQL Driver<\/p>\n\n\n\n

DO\u5bf9\u8c61\u89c4\u5219<\/p>\n\n\n\n

\u6240\u6709\u7684 ORM \u6846\u67b6\u90fd\u9700\u8981\u6709\u4e00\u4e2a Java \u5bf9\u8c61\u6765\u6620\u5c04\u6570\u636e\u5e93\u7684\u8868\uff0c\u5e76\u4e14\u662f\u4e00\u4e00\u5bf9\u5e94\u7684\uff0c\u4e00\u822c\u6211\u4eec\u628a\u8fd9\u7c7b\u5bf9\u8c61\u79f0\u4e3aDO<\/strong>\u5bf9\u8c61\uff0c\u5bf9\u8c61\u540d\u79f0\u7684\u89c4\u8303\u662f \u8868\u540d+DO<\/strong>
<\/p>\n\n\n\n

\u6bd4\u5982user\u8868\u5bf9\u5e94\u7684\u5bf9\u8c61\u540d\u79f0\u53ebUserDO<\/strong>\uff0ccomment\u8868\u5bf9\u5e94\u7684\u5bf9\u8c61\u4e3aCommentDO<\/strong>\uff0c\u5982\u679c\u4e3atest_user\u8868\u53ef\u4ee5\u4f7f\u7528UserDO<\/strong>\u6216\u8005TestUserDO<\/strong>\u4e00\u822c\u4f7f\u7528\u524d\u8005<\/p>\n\n\n\n

<\/div>\n\n\n\n

DO\u5bf9\u8c61\u5305\u89c4\u5219<\/p>\n\n\n\n

DO\u5bf9\u8c61\u4e00\u822c\u5b58\u653e\u5728xxx.xxx.dataobject<\/strong>\u76ee\u5f55\u4e0b<\/p>\n\n\n\n

\u5982CommentDO\u653e\u5728com.test.comment.dataobject<\/strong>\u4e0b<\/p>\n\n\n\n

<\/div>\n\n\n\n

\u6570\u636e\u7c7b\u578b<\/p>\n\n\n\n

JDBC\u6570\u636e\u7c7b\u578b<\/th>Java\u6570\u636e\u7c7b\u578b<\/th><\/tr><\/thead>
varchar<\/td>String<\/td><\/tr>
text<\/td>String<\/td><\/tr>
integer<\/td>int<\/td><\/tr>
double<\/td>double<\/td><\/tr>
bigint<\/td>long<\/td><\/tr>
datetime<\/td>date<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
<\/div>\n\n\n\n

DAO<\/p>\n\n\n\n

\u5728 Java \u5de5\u7a0b\u5316\u4e2d\uff0c\u6211\u4eec\u4e00\u822c\u4f1a\u628a\u6570\u636e\u5c42\u7684\u670d\u52a1\u79f0\u4e3aDAO<\/strong>\u5c42\uff0cDAO\u5c42\u4f1a\u5305\u542b\u5bf9\u6570\u636e\u5e93\u64cd\u4f5c\u7684\u63a5\u53e3\u548c\u5b9e\u73b0\u7c7b\u3002<\/p>\n\n\n\n

DAO<\/strong>\u5c42\u7684\u5305\u4e00\u822c\u653e\u5728xxx.xxx.xxx.dao<\/strong>\u4e0b\u5e76\u6dfb\u52a0Mapper<\/strong>\u6ce8\u89e3\u6765\u65b9\u4fbf\u6620\u5c04xml<\/p>\n\n\n\n


import<\/strong> org.apache.ibatis.annotations.Mapper;\n\n@Mapper<\/strong>\npublic<\/strong> interface<\/strong> UserDAO<\/strong> {\n\n\n}<\/code><\/pre>\n\n\n\n
<\/div>\n\n\n\n
\u521b\u5efa\u73a9DAO\u5c42\u4e4b\u540e\uff0c\u53ef\u4ee5\u901a\u8fc7\u521b\u5efaController\u6765\u5f15\u7528<\/p>\n\n\n\n
@Controller<\/strong>\npublic<\/strong> class<\/strong> UserController<\/strong> {\n\n    @Autowired<\/strong>\n    private<\/strong> UserDAO userDAO;\n\n}<\/code><\/pre>\n\n\n\n
<\/div>\n\n\n\n
\u6dfb\u52a0\u63a5\u53e3\u65b9\u6cd5<\/p>\n\n\n\n
DAO\u5c42\u4e2d\u53ef\u4ee5\u6dfb\u52a0\u63a5\u53e3\u65b9\u6cd5\u5982\uff1a<\/p>\n\n\n\n
@Mapper<\/strong>\npublic<\/strong> interface<\/strong> UserDAO<\/strong> {\n\n    @Select(\"SELECT id,user_name as userName,pwd,nick_name as nickName,avatar,gmt_created as gmtCreated,gmt_modified as gmtModified FROM user\")<\/strong>\n    List<UserDO> findAll<\/strong>();\n\n}<\/code><\/pre>\n\n\n\n
\u8fd9\u91cc\u7684Select<\/strong>\u6ce8\u89e3\u4e3aSQL\u65b9\u6cd5\u3002\u4f7f\u7528\u522b\u540d\u5bf9\u5e94DO\u5c42<\/p>\n\n\n\n
 @Select(\"SELECT id,user_name as userName,pwd,nick_name as nickName,avatar,gmt_created as gmtCreated,gmt_modified as gmtModified FROM user\")<\/strong><\/code><\/pre>\n\n\n\n
<\/div>\n\n\n\n
\u4f7f\u7528Controller\u6765\u4f7f\u7528\u65b9\u6cd5<\/p>\n\n\n\n
@Controller<\/strong>\npublic<\/strong> class<\/strong> UserController<\/strong> {\n\n  @Autowired<\/strong>\n  private<\/strong> UserDAO userDAO;\n\n  @GetMapping(\"\/users\")<\/strong>\n  @ResponseBody<\/strong>\n  public<\/strong> List<UserDO> getAll<\/strong>() {\n    return<\/strong> userDAO.findAll();\n  }\n\n}<\/code><\/pre>\n\n\n\n
<\/div>\n\n\n\n
\u63d2\u5165<\/p>\n\n\n\n
 @Insert(\"INSERT INTO user (user_name, pwd, nick_name,avatar,gmt_created,gmt_modified) VALUES(#{userName}, #{pwd}, #{nickName}, #{avatar},now(),now())\")<\/strong>\n  @Options(useGeneratedKeys = true, keyColumn = \"id\", keyProperty = \"id\")<\/strong>\n  int<\/strong> insert<\/strong>(UserDO userDO);<\/code><\/pre>\n\n\n\n
\u4f7f\u7528@Insert<\/strong>\u6765\u8868\u793a\u63d2\u5165SQL\u8bed\u53e5\uff0c\u6b64\u65f6 values<\/strong> \u5185\u503c\u4e2d\u7684#{}<\/strong> \u8868\u793a\u81ea\u52a8\u901a\u8fc7UserDO\u4e0a\u4e0b\u6587\u8bfb\u53d6\u503c<\/p>\n\n\n\n
@Options<\/strong>\u8868\u793a\u4e3b\u952e\u7684\u8bbe\u7f6e <\/p>\n\n\n\n
<\/div>\n\n\n\n
\u4fee\u6539<\/p>\n\n\n\n
@Update(\"update user set nick_name=#{nickName},gmt_modified=now() where id=#{id}\")<\/strong><\/code><\/pre>\n\n\n\n
<\/div>\n\n\n\n
\u5220\u9664<\/p>\n\n\n\n
@Delete(\"delete from user where id=#{id}\")<\/strong><\/code><\/pre>\n\n\n\n
<\/div>\n\n\n\n
\u4f20\u5165\u53c2\u6570<\/p>\n\n\n\n
List<CommentDO> findByRefId<\/strong>(@Param(\"refId\")<\/strong> String refId);<\/code><\/pre>\n\n\n\n
\u901a\u8fc7@Param<\/strong> \u6765\u5b9a\u4e49\u4e00\u4e2a\u522b\u540d\u5728\u4f7f\u7528#{}<\/strong>\u53ef\u4ee5\u76f4\u63a5\u5199\u5165\u522b\u540d\u6765\u4f20\u5165\u53c2\u6570<\/p>\n\n\n\n
<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5728\u5f53\u4e0b MyBatis \u5df2\u7ecf\u662f\u6700\u4e3b\u6d41\u7684\u6301\u4e45\u5c42\u6846\u67b6\uff0c\u5177\u4f53\u4e00\u70b9\u5c31\u662f\u64cd\u4f5c\u6570\u636e\u5e93\u7684\u6846\u67b6;MyBatis \u975e\u5e38\u8f7b\u91cf\uff0c\u53ea\u9700 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":""},"categories":[6,1],"tags":[],"class_list":["post-869","post","type-post","status-publish","format-standard","hentry","category-6","category-wcd"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/869"}],"collection":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/comments?post=869"}],"version-history":[{"count":14,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/869\/revisions"}],"predecessor-version":[{"id":1021,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/posts\/869\/revisions\/1021"}],"wp:attachment":[{"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/media?parent=869"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/categories?post=869"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fireinsect.top\/index.php\/wp-json\/wp\/v2\/tags?post=869"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}