\u9700\u8981\u521b\u5efa5\u4e2a\u6587\u4ef6, \u2460\u5b9e\u4f53\u7c7b\uff0c\u2461dao\uff0c\u2462\u4e3b\u914d\u7f6e\u6587\u4ef6\uff0c\u2463dao\u914d\u7f6e\u6587\u4ef6\uff0c\u2464\u6d4b\u8bd5\u7c7b<\/p>\n\n\n\n
( \u7c7b\u4f3c\u4e8e jdbc \u7684 \u2460\u5b9e\u4f53\u7c7b\uff0c\u2461dao , \u2462sql\u914d\u7f6e\uff0c\u2463dao\u5b9e\u73b0\u7c7b\u4ee3\u7801\uff0c\u2464\u6d4b\u8bd5\u7c7b\uff09<\/p>\n\n\n\n
\u4f20\u7edf\u7684 jdbc \u7684\u63a5\u53e3\u7c7b\uff0c\u53eb dao \uff0c\u662f\u7528\u6765\u914d\u7f6e\u64cd\u4f5c\u6570\u636e\u5e93\u7684\u63a5\u53e3\u7c7b<\/p>\n\n\n\n
\u800c mybatis \u7684\u64cd\u4f5c\u6570\u636e\u5e93\u63a5\u53e3\u7c7b\uff0c\u53eb mapper<\/p>\n\n\n\n
\uff08\u6545 mybatis \u91cc\uff0cdao \u4e5f\u53eb mapper)<\/p>\n\n\n\n
<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!DOCTYPE configuration \n PUBLIC \"-\/\/mybatis.org\/\/DTD Config 3.0\/\/EN\" \n \"http:\/\/mybatis.org\/dtd\/mybatis-3-config.dtd\"><\/code><\/pre>\n\n\n\n2.\u914d\u7f6e\u4e3b\u6587\u4ef6\uff0c\u4e0e\u6307\u5b9a\u6bcf\u4e2a dao \u7684\u6620\u5c04\u914d\u7f6e<\/h5>\n\n\n\n
\u914d\u7f6e\u4e00\u7ea7\u6807\u7b7e configuration \u4f5c\u4e3a\u914d\u7f6e\u4fe1\u606f\uff0c<\/p>\n\n\n\n
\u4e8c\u7ea7\u6807\u7b7e environments \u4f5c\u4e3a\u73af\u5883\u914d\u7f6e\u4fe1\u606f\uff0cdefault \u540d\u79f0\u968f\u610f( \u8fde\u63a5\u6c60\u6709 3\u79cd)<\/p>\n\n\n\n
\u4e8c\u7ea7\u6807\u7b7e mappers \u6307\u5b9a\u6bcf\u4e2a dao \u6620\u5c04\u6587\u4ef6\u914d\u7f6e\u7684\u4f4d\u7f6e\uff08\u5747\u4e3a xml\uff09<\/p>\n\n\n\n
<!-- mybatis\u7684\u4e3b\u914d\u7f6e\u6587\u4ef6 -->\n<configuration>\n <!-- \u914d\u7f6e\u73af\u5883 -->\n <environments default=\"mysql\">\n <!-- \u914d\u7f6emysql\u7684\u73af\u5883-->\n <environment id=\"mysql\">\n <!-- \u914d\u7f6e\u4e8b\u52a1\u7684\u7c7b\u578b-->\n <transactionManager type=\"JDBC\"><\/transactionManager>\n <!-- \u914d\u7f6e\u6570\u636e\u6e90\uff08\u8fde\u63a5\u6c60\uff09 -->\n <dataSource type=\"POOLED\">\n <!-- \u914d\u7f6e\u8fde\u63a5\u6570\u636e\u5e93\u76844\u4e2a\u57fa\u672c\u4fe1\u606f -->\n <property name=\"driver\" value=\"com.mysql.jdbc.Driver\"\/>\n <property name=\"url\" value=\"jdbc:mysql:\/\/localhost:3306\/mybatis\"\/>\n <property name=\"username\" value=\"root\"\/>\n <property name=\"password\" value=\"123456\"\/>\n <\/dataSource>\n <\/environment>\n <\/environments>\n\n <!-- \u6307\u5b9a\u6620\u5c04\u914d\u7f6e\u6587\u4ef6\u7684\u4f4d\u7f6e\uff0c\u6620\u5c04\u914d\u7f6e\u6587\u4ef6\u6307\u7684\u662f\u6bcf\u4e2adao\u72ec\u7acb\u7684\u914d\u7f6e\u6587\u4ef6 -->\n <mappers>\n <mapper resource=\"com\/52dixiaowo\/dao\/UserDao.xml\"\/>\n <\/mappers>\n<\/configuration><\/code><\/pre>\n\n\n\n3.\u6620\u5c04\u914d\u7f6e\u6587\u4ef6<\/h4>\n\n\n\n1.dao \u6587\u4ef6\u4e0e \u6620\u5c04\u914d\u7f6e\u6587\u4ef6\u76ee\u5f55\u7ed3\u6784\u8981\u76f8\u540c<\/h5>\n\n\n\n
\u6ce8\u610f\uff1apackage \u4e0e directory \u521b\u5efa\u76ee\u5f55\u65f6\uff0c\u5206\u522b\u4f7f\u7528 “.” \u548c “\/” \u505a\u5206\u9694\uff0c\u4f8b\u5982<\/p>\n\n\n\n
- com.52dixiaowo.dao \/\/ package<\/li>
- com\/52dixiaowo\/dao \/\/ directory<\/li><\/ul>\n\n\n\n
\u6bd4\u5982com.52dixiaowo.dao.UserDao.java \u4e0e com.52dixiaowo.dao.UserDao.xml<\/p>\n\n\n\n
2.\u914d\u7f6e\u7ea6\u675f\u6587\u4ef6<\/h5>\n\n\n\n<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!DOCTYPE mapper \n PUBLIC \"-\/\/mybatis.org\/\/DTD Mapper 3.0\/\/EN\" \n \"http:\/\/mybatis.org\/dtd\/mybatis-3-mapper.dtd\"><\/code><\/pre>\n\n\n\n3.\u4e3a dao \u6307\u5b9a\u914d\u7f6e\u4fe1\u606f<\/h5>\n\n\n\n
\u5305\u62ec\u6307\u5b9a dao\u4f4d\u7f6e \uff0c\u6307\u5b9a\u64cd\u4f5c\u65b9\u5f0f\uff0cdao\u65b9\u6cd5\uff0c\u8fd4\u56de\u7c7b\u578b\uff0csql\u8bed\u53e5<\/p>\n\n\n\n
<mapper namespace=\"com.52dixiaowo.dao.UserDao\">\n <!--\u914d\u7f6e\u67e5\u8be2\u6240\u6709-->\n <select id=\"findAll\" resultType=\"com.52dixiaowo.domain.User\">\n select * from user\n <\/select>\n<\/mapper><\/code><\/pre>\n\n\n\n4.\u6d4b\u8bd5\u7c7b\u6587\u4ef6<\/h4>\n\n\n\n
\u9700\u8981\u4f7f\u7528\u5de5\u7a0b\u6a21\u5f0f\u521b\u5efa session \u5bf9\u8c61\uff08\u7c7b\u4f3c\u4e8e statement \u5bf9\u8c61\uff09<\/p>\n\n\n\n
\u5e76\u4f7f\u7528 session \u5bf9\u8c61\u521b\u5efa\u4ee3\u7406\u5bf9\u8c61( \u7c7b\u4f3c\u4e8e dao \u7684\u5b9e\u73b0\u7c7b\uff09<\/p>\n\n\n\n
public static void main(String[] args)throws Exception {\n \/\/1.\u8bfb\u53d6\u914d\u7f6e\u6587\u4ef6\n InputStream in = Resources.getResourceAsStream(\"SqlMapConfig.xml\");\n \/\/2.\u521b\u5efaSqlSessionFactory\u5de5\u5382\n SqlSessionFactoryBuilder builder = new SqlSessionFactoryBuilder();\n SqlSessionFactory factory = builder.build(in);\n \/\/3.\u4f7f\u7528\u5de5\u5382\u751f\u4ea7SqlSession\u5bf9\u8c61\n SqlSession session = factory.openSession();\n \/\/4.\u4f7f\u7528SqlSession\u521b\u5efaDao\u63a5\u53e3\u7684\u4ee3\u7406\u5bf9\u8c61\n IUserDao userDao = session.getMapper(UserDao.class);\n \/\/5.\u4f7f\u7528\u4ee3\u7406\u5bf9\u8c61\u6267\u884c\u65b9\u6cd5\n List<User> users = userDao.findAll();\n for(User user : users){\n System.out.println(user);\n }\n \/\/6.\u91ca\u653e\u8d44\u6e90\n session.close();\n in.close();\n }\n}<\/code><\/pre>\n\n\n\n\u57fa\u4e8e\u6ce8\u89e3\u7684\u65b9\u5f0f<\/h4>\n\n\n\n
\u4f7f\u7528\u6ce8\u89e3\u66ff\u4ee3 dao\u7684\u914d\u7f6e\u6587\u4ef6\uff0c\u8fd9\u65f6\u4e0d\u9700\u8981 Usedao.xml<\/p>\n\n\n\n
1.\u5236\u5b9a\u4f7f\u7528\u6ce8\u89e3\u65b9\u5f0f<\/h5>\n\n\n\n
\u5728\u4e3b\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684 mappers \u4e2d\u4f7f\u7528 class \u5c5e\u6027<\/p>\n\n\n\n
<mapper class=\"com.52dixiaowo.dao.UserDao\" \/> <\/code><\/pre>\n\n\n\n2.\u5728\u63a5\u53e3\u7c7b\u4e2d\u52a0\u4e0a\u6ce8\u89e3<\/h5>\n\n\n\n
\u5728 UserDao \u63a5\u53e3\u4e2d\u7684 findAll \u65b9\u6cd5\u4e0a\uff0c\u52a0\u4e0a\u6ce8\u89e3<\/p>\n\n\n\n
@Select(\"select * from user\")\nList<user> findAll();<\/code><\/pre>\n\n\n\n\u5176\u4ed6\u6587\u4ef6\u548c\u4f7f\u7528 xml \u4e00\u6837\uff0c\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
mybayis \u4e0e jdbc\u76f8\u4f3c\uff0c\u719f\u6089 jdbc \u80fd\u5feb\u901f\u638c\u63e1 mybatis \u9700\u8981\u521b\u5efa5\u4e2a\u6587\u4ef6, \u2460\u5b9e\u4f53\u7c7b\uff0c\u2461… \u7ee7\u7eed\u9605\u8bfb mybatis \u5165\u95e8\u6848\u4f8b<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/171"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/comments?post=171"}],"version-history":[{"count":0,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/171\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/media?parent=171"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/categories?post=171"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/tags?post=171"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}