update 8.20

src/main/java/com/example/practice/config/Knife4jConfig.java

@@ -0,0 +1,34 @@
+package com.example.practice.config;
+
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.info.Info;
+import io.swagger.v3.oas.models.info.License;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * Knife4j 接口文档配置
+ * 官网地址
+ */
+@Configuration
+public class Knife4jConfig {
+
+    @Bean
+    public OpenAPI customOpenAPI() {
+        return new OpenAPI()
+                .info(new Info()
+                        .title("cxz")
+                        .version("1.0")
+                        .description("SpringBoot速成")
+                        .termsOfService("http://doc.xiaominfo.com")
+                        .license(new License().name("Apache 2.0")
+                                .url("http://doc.xiaominfo.com")));
+    }
+}
+
+
+
+
+
+
+

src/main/java/com/example/practice/controller/UserController.java

@@ -0,0 +1,55 @@
+package com.example.practice.controller;
+
+
+import com.example.practice.entity.User;
+import com.example.practice.mapper.UserMapper;
+import jakarta.annotation.Resource;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController     // @Controller + @ResponseBody
+@RequestMapping("/user")
+public class UserController {
+
+    @Resource
+    UserMapper userMapper;
+
+    @GetMapping("/queryAll")
+    public List<User> queryAll() {
+        return userMapper.selectAll();
+    }
+
+
+    @GetMapping("/test")
+    public String test() {
+        return "启动成功";
+    }
+
+
+    @PostMapping("/add")
+    public int add(@RequestBody User user) {
+        return userMapper.insert(user);
+    }
+
+
+    @PostMapping("/update")
+    public int update(@RequestBody User user) {
+        return userMapper.update(user);
+    }
+
+
+    @PostMapping("/delete")
+    public int delete(Long id) {
+        return userMapper.delete(id);
+    }
+
+
+    @GetMapping("/queryOne")
+    public User queryOne(Long id) {
+        return userMapper.selectOne(id);
+    }
+
+
+
+}

src/main/java/com/example/practice/mapper/UserMapper.java

@@ -5,7 +5,7 @@ import org.apache.ibatis.annotations.Mapper;
 
 import java.util.List;
 
-@Mapper // 将UserMapper的接口实现类对象生成，放入SpringIOC容器 UserMapperImpl userMapperImpl = new UserMapperImpl()
+@Mapper // 生成当前UserMapper接口的实现类对象，并且把这个对象放到SpringIOC 容器中
 public interface UserMapper {
 
     List<User> selectAll();

src/main/java/com/example/practice/mapper/UserMapperImpl.java

@@ -1,63 +0,0 @@
-package com.example.practice.mapper;
-
-import com.example.practice.entity.User;
-import com.example.practice.utils.SqlSessionFactoryUtils;
-import org.apache.ibatis.session.SqlSession;
-
-import java.util.List;
-
-public class UserMapperImpl implements UserMapper {
-
-
-    @Override
-    public List<User> selectAll() {
-        // Mybatis动态代理机制
-        SqlSession sqlSession = SqlSessionFactoryUtils.getSqlSession(); // 命名空间.sqlId
-        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
-        List<User> list = userMapper.selectAll();
-//        List<User> list = sqlSession.selectList("com.example.practice.mapper.UserMapper.selectAll");
-        return list;
-    }
-
-    @Override
-    public User selectOne(Long id) {
-        SqlSession sqlSession = SqlSessionFactoryUtils.getSqlSession();
-        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
-        User user = userMapper.selectOne(id);
-//        User user = sqlSession.selectOne("com.example.practice.mapper.UserMapper.selectOne", 2);
-        return user;
-    }
-
-    @Override
-    public int insert(User user) {
-        SqlSession sqlSession = SqlSessionFactoryUtils.getSqlSession();
-        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
-        int result = userMapper.insert(user);
-//        int result = sqlSession.insert("com.example.practice.mapper.UserMapper.insert", user);
-        if (result == 0) throw new RuntimeException("删除失败");
-        sqlSession.commit();
-        return result;
-    }
-
-    @Override
-    public int update(User user) {
-        SqlSession sqlSession = SqlSessionFactoryUtils.getSqlSession();
-        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
-        int result = userMapper.update(user);
-//        int result = sqlSession.update("com.example.practice.mapper.UserMapper.update", user);
-        if (result == 0) throw new RuntimeException("删除失败");
-        sqlSession.commit();
-        return result;
-    }
-
-    @Override
-    public int delete(Long id) {
-        SqlSession sqlSession = SqlSessionFactoryUtils.getSqlSession();
-        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
-        int result = userMapper.delete(id);
-//        int result = sqlSession.delete("com.example.practice.mapper.UserMapper.delete", 2);
-        if (result == 0) throw new RuntimeException("删除失败");
-        sqlSession.commit();
-        return result;
-    }
-}

src/main/java/com/example/practice/sqlsessionTest/SqlSessionTest.java

@@ -1,85 +0,0 @@
-package com.example.practice.sqlsessionTest;
-
-import com.example.practice.entity.User;
-import com.example.practice.mapper.UserMapper;
-import com.example.practice.mapper.UserMapperImpl;
-
-import java.io.IOException;
-import java.util.List;
-
-public class SqlSessionTest {
-
-    public static void main(String[] args) throws IOException {
-
-
-        UserMapper userMapper = new UserMapperImpl();
-        List<User> users = userMapper.selectAll();
-        for (User user : users) {
-            System.out.println(user);
-        }
-
-//        User user = userMapper.selectOne(2L);
-//        System.out.println(user);
-//
-//        userMapper.delete(2L);
-//
-//
-//        User insertUser = new User();
-//        userMapper.insert(insertUser);
-//
-//
-//        User updateUser = new User();
-//        userMapper.update(updateUser);
-
-
-//        SqlSession sqlSession = SqlSessionFactoryUtils.getSqlSession();
-
-//        List<User> list = sqlSession.selectList("fdsgfgd.selectList");
-//        for (User user : list) {
-//            System.out.println(user);
-//        }
-//
-//        User user = sqlSession.selectOne("fdsgfgd.selectOne", 2);
-//        System.out.println(user);
-//
-//
-//        int delete = sqlSession.delete("fdsgfgd.delete", 2);
-//        if (delete == 0) throw new RuntimeException("删除失败");
-//        sqlSession.commit();
-//
-//
-//        User user = new User();
-//        user.setId(null);
-//        user.setNickName("张三");
-//        user.setPhoneNumber("12345678901");
-//        user.setUserAccount("123456");
-//        user.setUserPassword("123456");
-//        user.setUserRole("user");
-//        user.setMoney(10000);
-//        sqlSession.insert("fdsgfgd.insert", user);
-//        sqlSession.commit();
-//
-//
-//        User user = new User();
-//        user.setId(9L);
-//        user.setNickName("张三dfsafda");
-//        user.setPhoneNumber("12345678901");
-//        user.setUserAccount("123456");
-//        user.setUserPassword("123456");
-//        user.setUserRole("user");
-//        user.setMoney(10000);
-//        sqlSession.update("fdsgfgd.update", user);
-//        sqlSession.commit();
-
-
-    }
-
-
-//    public static void selectList() {
-//        List<User> list = sqlSession.selectList("fdsgfgd.selectList");
-//        for (User user : list) {
-//            System.out.println(user);
-//        }
-//    }
-
-}

src/main/java/com/example/practice/utils/SqlSessionFactoryUtils.java

@@ -1,43 +0,0 @@
-package com.example.practice.utils;
-
-import org.apache.ibatis.io.Resources;
-import org.apache.ibatis.session.SqlSession;
-import org.apache.ibatis.session.SqlSessionFactory;
-import org.apache.ibatis.session.SqlSessionFactoryBuilder;
-
-import java.io.IOException;
-import java.io.InputStream;
-
-public class SqlSessionFactoryUtils {
-
-    private static SqlSessionFactory sqlSessionFactory;
-
-    // 初始化SqlSessionFactory对象，表示需要操作哪个数据库
-    static {
-        // 加载配置文件（转成字节流的形式）
-        String resourcePath = "mybatis-config.xml";
-        InputStream is = null;
-        try {
-            is = Resources.getResourceAsStream(resourcePath);
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-
-        // SqlSessionFactoryBuilder负责创建SqlSessionFactory对象
-        // SqlSessionFactory负责生产SqlSession对象
-        // SqlSession对象是负责连接数据库, 每执行一条sql语句，就会创建或者连接池中获取一个对象
-        SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
-        sqlSessionFactory = sqlSessionFactoryBuilder.build(is);
-    }
-
-
-    // 获取数据库连接对象
-    public static SqlSession getSqlSession() {
-        SqlSession sqlSession = sqlSessionFactory.openSession();
-        return sqlSession;
-    }
-
-
-
-
-}

src/main/resources/application.yml

@@ -0,0 +1,10 @@
+spring:
+  datasource:
+    driver-class-name: com.mysql.cj.jdbc.Driver
+    url: jdbc:mysql://localhost:3306/practice
+    username: root
+    password: 123456
+
+
+mybatis:
+  mapper-locations: classpath:mapper/*.xml

src/main/resources/mybatis-config.xml

@@ -1,28 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" ?>
-<!DOCTYPE configuration
-        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
-        "http://mybatis.org/dtd/mybatis-3-config.dtd">
-
-<configuration>
-
-    <environments default="dev">
-
-        <environment id="dev">
-            <transactionManager type="JDBC"/>
-            <dataSource type="POOLED">
-                <property name="driver" value="com.mysql.cj.jdbc.Driver"/>
-                <property name="url" value="jdbc:mysql://localhost:3306/practice"/>
-                <property name="username" value="root"/>
-                <property name="password" value="123456"/>
-            </dataSource>
-        </environment>
-
-    </environments>
-
-    <mappers>
-        <mapper resource="mapper/UserMapper.xml"/>
-    </mappers>
-
-</configuration>
-
-

src/test/java/com/draft/UserMapperImpl.java

@@ -0,0 +1,51 @@
+//package com.draft;
+//
+//import com.example.practice.entity.User;
+//import com.example.practice.mapper.UserMapper;
+//import com.example.practice.utils.SqlSessionFactoryUtils;
+//import org.apache.ibatis.session.SqlSession;
+//
+//import java.util.List;
+//
+//public class UserMapperImpl implements UserMapper {
+//
+//
+//    SqlSession sqlSession = SqlSessionFactoryUtils.getSqlSession();
+//
+//
+//    UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
+//
+//
+//    @Override
+//    public List<User> selectAll() {
+//        // Mybatis动态代理机制
+//        return userMapper.selectAll();
+//    }
+//
+//    @Override
+//    public User selectOne(Long id) {
+//        User user = userMapper.selectOne(id);
+//        return user;
+//    }
+//
+//    @Override
+//    public int insert(User user) {
+//        int result = userMapper.insert(user);
+//        sqlSession.commit();
+//        return result;
+//    }
+//
+//    @Override
+//    public int update(User user) {
+//        int result = userMapper.update(user);
+//        sqlSession.commit();
+//        return result;
+//    }
+//
+//    @Override
+//    public int delete(Long id) {
+//        int result = userMapper.delete(id);
+//        sqlSession.commit();
+//        return result;
+//    }
+//}

src/test/java/com/draft/mybatis-config.xml

@@ -0,0 +1,28 @@
+<!--<?xml version="1.0" encoding="UTF-8" ?>-->
+<!--<!DOCTYPE configuration-->
+<!--        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"-->
+<!--        "http://mybatis.org/dtd/mybatis-3-config.dtd">-->
+
+<!--<configuration>-->
+
+<!--    <environments default="dev">-->
+
+<!--        <environment id="dev">-->
+<!--            <transactionManager type="JDBC"/>-->
+<!--            <dataSource type="POOLED">-->
+<!--                <property name="driver" value="com.mysql.cj.jdbc.Driver"/>-->
+<!--                <property name="url" value="jdbc:mysql://localhost:3306/practice"/>-->
+<!--                <property name="username" value="root"/>-->
+<!--                <property name="password" value="123456"/>-->
+<!--            </dataSource>-->
+<!--        </environment>-->
+
+<!--    </environments>-->
+
+<!--    <mappers>-->
+<!--        <mapper resource="mapper/UserMapper.xml"/>-->
+<!--    </mappers>-->
+
+<!--</configuration>-->
+
+

src/test/java/com/draft/sqlsessionTest/SqlSessionTest.java

@@ -0,0 +1,108 @@
+//package com.example.practice.sqlsessionTest;
+//
+//import com.example.practice.entity.User;
+//import com.example.practice.mapper.UserMapper;
+//import com.example.practice.mapper.UserMapperImpl;
+//
+//import java.io.IOException;
+//import java.util.List;
+//
+//public class SqlSessionTest {
+//
+//    public static void main(String[] args) throws IOException {
+//
+//
+////        com.example.practice.mapper.UserMapper userMapper = new com.draft.UserMapperImpl();
+//
+//        UserMapper userMapper = new UserMapperImpl();
+//        List<User> users = userMapper.selectAll();
+//        for (User user : users) {
+//            System.out.println(user);
+//        }
+//
+////        List<Object> list = sqlSession.selectList("fdgggsdd.selectAll");
+////        for (Object o : list) {
+////            System.out.println(o);
+////        }
+////        User user = new User();
+////        user.setId(null);
+////        user.setNickName("张三");
+////        user.setPhoneNumber("12345678901");
+////        user.setUserAccount("123456");
+////        user.setUserPassword("123456");
+////        user.setUserRole("user");
+////
+////        sqlSession.insert("fdgggsdd.insert", user);
+////        sqlSession.commit();
+//
+////        UserMapper userMapper = new UserMapperImpl();
+////        List<User> users = userMapper.selectAll();
+////        for (User user : users) {
+////            System.out.println(user);
+////        }
+//
+////        User user = userMapper.selectOne(2L);
+////        System.out.println(user);
+////
+////        userMapper.delete(2L);
+////
+////
+////        User insertUser = new User();
+////        userMapper.insert(insertUser);
+////
+////
+////        User updateUser = new User();
+////        userMapper.update(updateUser);
+//
+//
+////        SqlSession sqlSession = SqlSessionFactoryUtils.getSqlSession();
+//
+////        List<User> list = sqlSession.selectList("fdsgfgd.selectList");
+////        for (User user : list) {
+////            System.out.println(user);
+////        }
+////
+////        User user = sqlSession.selectOne("fdsgfgd.selectOne", 2);
+////        System.out.println(user);
+////
+////
+////        int delete = sqlSession.delete("fdsgfgd.delete", 2);
+////        if (delete == 0) throw new RuntimeException("删除失败");
+////        sqlSession.commit();
+////
+////
+////        User user = new User();
+////        user.setId(null);
+////        user.setNickName("张三");
+////        user.setPhoneNumber("12345678901");
+////        user.setUserAccount("123456");
+////        user.setUserPassword("123456");
+////        user.setUserRole("user");
+////        user.setMoney(10000);
+////        sqlSession.insert("fdsgfgd.insert", user);
+////        sqlSession.commit();
+////
+////
+////        User user = new User();
+////        user.setId(9L);
+////        user.setNickName("张三dfsafda");
+////        user.setPhoneNumber("12345678901");
+////        user.setUserAccount("123456");
+////        user.setUserPassword("123456");
+////        user.setUserRole("user");
+////        user.setMoney(10000);
+////        sqlSession.update("fdsgfgd.update", user);
+////        sqlSession.commit();
+//
+//
+//    }
+//
+//
+////    public static void selectList() {
+////        List<User> list = sqlSession.selectList("fdsgfgd.selectList");
+////        for (User user : list) {
+////            System.out.println(user);
+////        }
+////    }
+//
+//}

src/test/java/com/draft/utils/SqlSessionFactoryUtils.java

@@ -0,0 +1,43 @@
+//package com.draft.utils;
+//
+//import org.apache.ibatis.io.Resources;
+//import org.apache.ibatis.session.SqlSession;
+//import org.apache.ibatis.session.SqlSessionFactory;
+//import org.apache.ibatis.session.SqlSessionFactoryBuilder;
+//
+//import java.io.IOException;
+//import java.io.InputStream;
+//
+//public class SqlSessionFactoryUtils {
+//
+//    private static SqlSessionFactory sqlSessionFactory;
+//
+//    // 初始化SqlSessionFactory对象，表示需要操作哪个数据库
+//    static {
+//        // 加载配置文件（转成字节流的形式）
+//        String resourcePath = "com/draft/mybatis-config.xml";
+//        InputStream is = null;
+//        try {
+//            is = Resources.getResourceAsStream(resourcePath);
+//        } catch (IOException e) {
+//            e.printStackTrace();
+//        }
+//
+//        // SqlSessionFactoryBuilder负责创建SqlSessionFactory对象
+//        // SqlSessionFactory负责生产SqlSession对象
+//        // SqlSession对象是负责连接数据库, 每执行一条sql语句，就会创建或者连接池中获取一个对象
+//        SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
+//        sqlSessionFactory = sqlSessionFactoryBuilder.build(is);
+//    }
+//
+//
+//    // 获取数据库连接对象
+//    public static SqlSession getSqlSession() {
+//        SqlSession sqlSession = sqlSessionFactory.openSession();
+//        return sqlSession;
+//    }
+//
+//
+//
+//
+//}