{"id":998,"date":"2023-07-17T14:53:03","date_gmt":"2023-07-17T06:53:03","guid":{"rendered":"https:\/\/www.zhidianwl.net\/zhidianwl\/?p=998"},"modified":"2023-07-17T14:53:03","modified_gmt":"2023-07-17T06:53:03","slug":"app%e5%bc%80%e5%8f%91mybatis%e6%a1%86%e6%9e%b6%e6%9c%89%e4%bb%80%e4%b9%88%e4%bd%9c%e7%94%a8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.zhidianwl.net\/zhidianwl\/2023\/07\/17\/app%e5%bc%80%e5%8f%91mybatis%e6%a1%86%e6%9e%b6%e6%9c%89%e4%bb%80%e4%b9%88%e4%bd%9c%e7%94%a8%ef%bc%9f\/","title":{"rendered":"app\u5f00\u53d1mybatis\u6846\u67b6\u6709\u4ec0\u4e48\u4f5c\u7528\uff1f"},"content":{"rendered":"

## MyBatis\u6846\u67b6\uff1a\u539f\u7406\u4e0e\u8be6\u7ec6\u4ecb\u7ecd<\/p>\n

MyBatis \u662f\u4e00\u4e2a\u5f00\u6e90\u7684 Java \u6301\u4e45\u5c42\u6846\u67b6\uff0c\u5b83\u4e13\u6ce8\u4e8e SQL \u8bed\u53e5\u7684\u6620\u5c04\u5de5\u4f5c\uff0c\u63d0\u4f9b\u65b9\u4fbf\u7684 API \u6765\u652f\u6301\u589e\u5220\u6539\u67e5\u64cd\u4f5c\uff0c\u5e76\u5b8c\u7f8e\u652f\u6301\u5b58\u50a8\u8fc7\u7a0b\u7b49\u590d\u6742\u64cd\u4f5c\u3002\u672c\u7bc7\u6587\u7ae0\u5c06\u8be6\u7ec6\u4ecb\u7ecd MyBatis \u7684\u57fa\u672c\u539f\u7406\u548c\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n

### MyBatis \u7684\u539f\u7406<\/p>\n

MyBatis \u662f\u4e00\u4e2a\u591a\u5c42\u7ed3\u6784\u7684\u6846\u67b6\uff0c\u4ece\u4e0a\u5230\u4e0b\u4f9d\u6b21\u4e3a\u63a5\u53e3\u5c42\u3001\u6838\u5fc3\u5c42\u3001\u6570\u636e\u5904\u7406\u5c42\u548c\u6301\u4e45\u5c42\u3002\u5177\u4f53\u6765\u8bf4\uff1a<\/p>\n

1. **\u63a5\u53e3\u5c42**\uff1a\u7528\u6237\u5b9e\u73b0\u5bf9\u6570\u636e\u7684\u589e\u5220\u6539\u67e5\u64cd\u4f5c\uff0c\u4e3b\u8981\u4f7f\u7528 SqlSession \u5bf9\u8c61\u548c Mapper \u63a5\u53e3\u3002<\/p>\n

2. **\u6838\u5fc3\u5c42**\uff1a\u8d1f\u8d23\u5904\u7406\u7528\u6237\u7684\u8bf7\u6c42\u548cSQL\u8bed\u53e5\u7684\u6620\u5c04\u5de5\u4f5c\uff0c\u5305\u62ec\u914d\u7f6e\u52a0\u8f7d\u3001 SQL\u6267\u884c\u5668\u548c\u7f13\u5b58\u7ba1\u7406\u7b49\u3002<\/p>\n

3. **\u6570\u636e\u5904\u7406\u5c42**: \u8d1f\u8d23\u5904\u7406\u53c2\u6570\u6620\u5c04\u3001\u7ed3\u679c\u6620\u5c04\u548c\u52a8\u6001 SQL \u89e3\u6790\u7b49\u5de5\u4f5c\u3002<\/p>\n

4. **\u6301\u4e45\u5c42**\uff1a\u901a\u8fc7 JDBC \u7684\u63a5\u53e3\u6765\u5b9e\u73b0\u4e0e\u6570\u636e\u5e93\u7684\u4ea4\u4e92\u3002<\/p>\n

\u5728 APP<\/a>MyBatis \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 XML \u6587\u4ef6\u6216\u6ce8\u89e3\u7684\u65b9\u5f0f\u6765\u8fdb\u884c SQL \u7684\u6620\u5c04\u3002\u5f53 MyBatis \u88ab\u8c03\u7528\u65f6\uff0c\u5b83\u4f1a\u6839\u636e\u7528\u6237\u63d0\u4f9b\u7684\u53c2\u6570\u6765\u67e5\u627e\u5bf9\u5e94\u7684 SQL \u6620\u5c04\u3002\u7136\u540e\uff0cMyBatis \u4f1a\u5c06\u8fd9\u4e9b SQL \u8bed\u53e5\u7f16\u8bd1\u6210 PreparedStatement \u5bf9\u8c61\uff0c\u5e76\u6839\u636e\u5b9e\u9645\u7684\u53c2\u6570\u6765\u586b\u5145\u8fd9\u4e9b\u5bf9\u8c61\u3002\u6700\u540e\uff0c\u5c06\u5f97\u5230\u7684\u7ed3\u679c\u8f6c\u6362\u6210\u5bf9\u5e94\u7684 Java \u5bf9\u8c61\u8fd4\u56de\u3002<\/p>\n

### MyBatis \u7684\u4f7f\u7528<\/p>\n

\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528 MyBatis \u8fdb\u884c\u589e\u5220\u6539\u67e5\u64cd\u4f5c\u3002<\/p>\n

#### 1.\u521b\u5efa Maven \u9879\u76ee<\/p>\n

\u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2a Maven \u9879\u76ee\uff0c\u5e76\u5728 pom.xml \u6587\u4ef6\u4e2d\u6dfb\u52a0 MyBatis \u7684\u4f9d\u8d56\u3002<\/p>\n

“`xml<\/p>\n

\n

\n

org.mybatis<\/p>\n

mybatis<\/p>\n

3.5.6<\/p>\n<\/p>\n

\n

mysql<\/p>\n

mysql-connector-java<\/p>\n

8.0.19<\/p>\n<\/p>\n

“`<\/p>\n

#### 2.\u914d\u7f6e\u6570\u636e\u5e93\u8fde\u63a5<\/p>\n

\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a `mybatis-config.xml` \u6587\u4ef6\uff0c\u7528\u4e8e\u914d\u7f6e\u6570\u636e\u5e93\u8fde\u63a5\u4fe1\u606f\u3002<\/p>\n

“`xml<\/p>\n<\/p>\n

\n

\n

\n

\n

\n

<\/figure>\n<\/p>\n<\/p>\n<\/p>\n

\n

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

“`<\/p>\n

#### 3.\u521b\u5efa\u5b9e\u4f53\u7c7b\u548c\u63a5\u53e3<\/p>\n

\u521b\u5efa\u4e00\u4e2a\u5b9e\u4f53\u7c7b `User` \u548c `UserMapper` \u63a5\u53e3\uff0c\u7528\u4e8e\u8868\u793a\u6570\u636e\u8868\u4e2d\u7684\u8bb0\u5f55\u548c\u64cd\u4f5c\u3002<\/p>\n

“`java<\/p>\n

\/\/ User.java<\/p>\n

public class User {<\/p>\n

private int id;<\/p>\n

private String name;<\/p>\n

private String password;<\/p>\n

\/\/ getter \u548c setter<\/p>\n

}<\/p>\n

\/\/ UserMapper.java<\/p>\n

public interface UserMapper {<\/p>\n

List getAll();<\/p>\n

User getById(int id);<\/p>\n

int insert(User user);<\/p>\n

int update(User user);<\/p>\n

int delete(int id);<\/p>\n

}<\/p>\n

“`<\/p>\n

#### 4.\u7f16\u5199\u6620\u5c04\u6587\u4ef6<\/p>\n

\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u7f16\u5199 `UserMapper.xml` \u6587\u4ef6\uff0c\u7528\u4e8e\u914d\u7f6e SQL \u6620\u5c04\u3002<\/p>\n

“`xml<\/p>\n<\/p>\n

\n

\n<\/p>\n

\n

id, name, password<\/p>\n<\/p>\n

\n

SELECT<\/p>\n<\/p>\n

FROM user<\/p>\n<\/p>\n

\n

SELECT<\/p>\n<\/p>\n

FROM user<\/p>\n

WHERE id = #{id}<\/p>\n<\/p>\n

\n

INSERT INTO userAPP\u5f00\u53d1<\/a> (name, password) VALUES (#{name}, #{password})<\/p>\n<\/p>\n

\n

UPDATE user SET name = #{name}, password = #{password} WHERE id = #{id}<\/p>\n<\/p>\n

\n

DELETE FROM user WHERE id = #{id}<\/p>\n<\/p>\n

“`<\/p>\n

#### 5.\u6ce8\u518c\u6620\u5c04\u6587\u4ef6\u548c\u6d4b\u8bd5<\/p>\n

\u5728 `mybatis-config.xml` \u6587\u4ef6\u7684 “ \u6807\u7b7e\u4e2d\u6ce8\u518c\u6620\u5c04\u6587\u4ef6\u3002<\/p>\n

“`xml<\/p>\n

\n

“`<\/p>\n

\u7f16\u5199\u6d4b\u8bd5\u7c7b\uff0c\u8fdb\u884c CRUD \u64cd\u4f5c\u3002<\/p>\n

“`java<\/p>\n

public class MybatisTest {<\/p>\n

private static SqlSessionFactory sqlSessionFactory;<\/p>\n

@BeforeClass<\/p>\n

public static void setUp() throws IOException {<\/p>\n

String resource = “mybatis-config.xml”;<\/p>\n

InputStream inputStream = Resources.getResourceAsStream(resource);<\/p>\n

sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);<\/p>\n

}<\/p>\n

@Test<\/p>\n

public void testCRUD() {<\/p>\n

SqlSession sqlSession = sqlSessionFactory.openSession();<\/p>\n

try {<\/p>\n

UserMapper userMapper = sqlSession.getMapper(UserMapper.class);<\/p>\n<\/p>\n

\/\/ \u63d2\u5165\u6570\u636e<\/p>\n

User user = new User();<\/p>\n

user.setName(“Tom”);<\/p>\n

user.setPassword(“password”);<\/p>\n

userMapper.insert(user);<\/p>\n

sqlSession.commit();<\/p>\n

\/\/ \u67e5\u8be2\u6570\u636e<\/p>\n

List users = userMapper.getAll();<\/p>\n

System.out.println(“\u67e5\u8be2\u6240\u6709\u7528\u6237\uff1a” + users);<\/p>\n

user = userMapper.getById(1);<\/p>\n

System.out.println(“\u67e5\u8be2id\u4e3a1\u7684<\/p>\n","protected":false},"excerpt":{"rendered":"

## MyBatis\u6846\u67b6\uff1a\u539f\u7406\u4e0e\u8be6\u7ec6\u4ecb\u7ecdMyBatis \u662f\u4e00\u4e2a\u5f00\u6e90\u7684 Java \u6301\u4e45\u5c42\u6846\u67b6\uff0c\u5b83\u4e13\u6ce8\u4e8e SQL \u8bed\u53e5\u7684\u6620\u5c04\u5de5\u4f5c\uff0c\u63d0\u4f9b\u65b9\u4fbf\u7684 API \u6765\u652f\u6301\u589e\u5220\u6539\u67e5\u64cd\u4f5c\uff0c\u5e76\u5b8c\u7f8e\u652f\u6301\u5b58\u50a8\u8fc7\u7a0b\u7b49\u590d\u6742\u64cd\u4f5c\u3002\u672c<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2265,1282,2267,12,2266],"topic":[],"class_list":["post-998","post","type-post","status-publish","format-standard","hentry","category-kaifaapp","tag-phpexe","tag-1282","tag-2267","tag-12","tag-exe"],"_links":{"self":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/posts\/998","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/comments?post=998"}],"version-history":[{"count":0,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/posts\/998\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/media?parent=998"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/categories?post=998"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/tags?post=998"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.zhidianwl.net\/zhidianwl\/wp-json\/wp\/v2\/topic?post=998"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}