first

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

@@ -1,24 +0,0 @@
-package com.example.practice.controller;
-
-
-import com.example.practice.entity.User;
-import com.example.practice.mapper.UserMapper;
-import com.example.practice.mapper.UserMapperImpl;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-import java.util.List;
-
-@RestController
-@RequestMapping("/user")
-public class UserController {
-
-
-    UserMapper userMapper = new UserMapperImpl();
-
-    @RequestMapping("/query")
-    public List<User> query() {
-        return userMapper.selectList();
-    }
-
-}

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

@@ -1,19 +0,0 @@
-package com.example.practice.mapper;
-
-import com.example.practice.entity.User;
-
-import java.util.List;
-
-public interface UserMapper {
-
-    int insert (User user);
-
-    int delete(Long id);
-
-    int update(User user);
-
-    User selectOne(Long id);
-
-    List<User> selectList();
-
-}

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

@@ -1,74 +0,0 @@
-package com.example.practice.mapper;
-
-import com.example.practice.entity.User;
-import com.example.practice.utils.SqlSessionFactoryUtil;
-import org.apache.ibatis.session.SqlSession;
-
-import java.util.List;
-
-public class UserMapperImpl implements UserMapper {
-
-    @Override
-    public int insert(User user) {
-        SqlSession sqlSession = SqlSessionFactoryUtil.getSqlSession();
-        try {
-            UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
-            int result = userMapper.insert(user);
-            if (result == 0) throw new RuntimeException("添加失败");
-            sqlSession.commit();
-        } catch (Exception e) {
-            sqlSession.rollback();
-        } finally {
-            sqlSession.close();
-        }
-        return 1;
-    }
-
-    @Override
-    public int delete(Long id) {
-        SqlSession sqlSession = SqlSessionFactoryUtil.getSqlSession();
-        try {
-            UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
-            int result = userMapper.delete(id);
-            if (result == 0) throw new RuntimeException("删除失败");
-            sqlSession.commit();
-        } catch (Exception e) {
-            sqlSession.rollback();
-        } finally {
-            sqlSession.close();
-        }
-        return 1;
-    }
-
-    @Override
-    public int update(User user) {
-        SqlSession sqlSession = SqlSessionFactoryUtil.getSqlSession();
-        try {
-            UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
-            int result = userMapper.update(user);
-            if (result == 0) throw new RuntimeException("更新失败");
-            sqlSession.commit();
-        } catch (Exception e) {
-            sqlSession.rollback();
-        } finally {
-            sqlSession.close();
-        }
-        return 1;
-    }
-
-    @Override
-    public User selectOne(Long id) {
-        SqlSession sqlSession = SqlSessionFactoryUtil.getSqlSession();
-        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
-        User user = userMapper.selectOne(id);
-        return user;
-    }
-
-    @Override
-    public List<User> selectList() {
-        SqlSession sqlSession = SqlSessionFactoryUtil.getSqlSession();
-        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
-        List<User> users = userMapper.selectList();
-        return users;
-    }
-}

src/main/java/com/example/practice/sqlsession/SqlSessionPlusTest.java

@@ -1,103 +0,0 @@
-package com.example.practice.sqlsession;
-
-import com.example.practice.entity.User;
-import com.example.practice.utils.SqlSessionFactoryUtil;
-import org.apache.ibatis.session.SqlSession;
-
-import java.io.IOException;
-import java.util.List;
-
-public class SqlSessionPlusTest {
-
-
-    public static void main(String[] args) throws IOException {
-
-        SqlSession sqlSession = SqlSessionFactoryUtil.getSqlSession();
-
-        // 插入
-        User insertUser = new User();
-        insertUser.setId(null);
-        insertUser.setNickName("管理员2");
-        insertUser.setPhoneNumber("12345678901");
-        insertUser.setUserAccount("admin2");
-        insertUser.setUserPassword("12345678");
-        insertUser.setUserRole("admin");
-        insert(sqlSession, insertUser);
-
-
-        // 根据id删除
-        delete(sqlSession, 12L);
-
-
-        // 修改
-        User updateUser = new User();
-        updateUser.setId(11L);
-        updateUser.setNickName("管理员dsfaf2");
-        updateUser.setPhoneNumber("fdsdsgsfdsf");
-        updateUser.setUserAccount("fds");
-        updateUser.setUserPassword("12345678");
-        updateUser.setUserRole("admin");
-        update(sqlSession, updateUser);
-
-
-        // 查询
-        selectList(sqlSession);
-
-        // 根据id查询
-        selectOne(sqlSession, 4L);
-
-    }
-
-
-    private static void insert(SqlSession sqlSession, User user) {
-        try {
-            int result = sqlSession.insert("fdeawgryer.insert", user);
-            if (result == 0) throw new RuntimeException("添加失败");
-            sqlSession.commit();
-        } catch (Exception e) {
-            sqlSession.rollback();
-        } finally {
-            sqlSession.close();
-        }
-    }
-
-
-    private static void delete(SqlSession sqlSession, Long id) {
-        try {
-            int result = sqlSession.delete("fdeawgryer.delete", id);
-            if (result == 0) throw new RuntimeException("删除失败");
-            sqlSession.commit();
-        } catch (Exception e) {
-            sqlSession.rollback();
-        } finally {
-            sqlSession.close();
-        }
-    }
-
-
-    private static void update(SqlSession sqlSession, User user) {
-        try {
-            int result = sqlSession.update("fdeawgryer.update", user);
-            if (result == 0) throw new RuntimeException("更新失败");
-            sqlSession.commit();
-        } catch (Exception e) {
-            sqlSession.rollback();
-        } finally {
-            sqlSession.close();
-        }
-    }
-
-
-    private static void selectList(SqlSession sqlSession) {
-        List<User> userList = sqlSession.selectList("fdeawgryer.dfsakdf");
-        for (User user : userList) {
-            System.out.println(user);
-        }
-    }
-
-
-    private static void selectOne(SqlSession sqlSession, Long id) {
-        User user = sqlSession.selectOne("fdeawgryer.selectOne", id);
-        System.out.println(user);
-    }
-}

src/main/java/com/example/practice/sqlsession/SqlSessionSPlusTest.java

@@ -1,60 +0,0 @@
-package com.example.practice.sqlsession;
-
-import com.example.practice.entity.User;
-import com.example.practice.mapper.UserMapper;
-import com.example.practice.mapper.UserMapperImpl;
-import com.example.practice.utils.SqlSessionFactoryUtil;
-import org.apache.ibatis.session.SqlSession;
-
-import java.io.IOException;
-import java.util.List;
-
-public class SqlSessionSPlusTest {
-
-    private static final UserMapper userMapper = new UserMapperImpl();
-
-    public static void main(String[] args) throws IOException {
-
-        SqlSession sqlSession = SqlSessionFactoryUtil.getSqlSession();
-        List<User> userList = sqlSession.selectList("fdeawgryer.dfsakdf");
-        userList.forEach(System.out::println);
-
-
-//        // 插入
-//        User insertUser = new User();
-//        insertUser.setId(null);
-//        insertUser.setNickName("管理员2");
-//        insertUser.setPhoneNumber("12345678901");
-//        insertUser.setUserAccount("admin2");
-//        insertUser.setUserPassword("12345678");
-//        insertUser.setUserRole("admin");
-//        userMapper.insert(insertUser);
-//
-//
-//        // 根据id删除
-//        userMapper.delete(12L);
-//
-//
-//        // 修改
-//        User updateUser = new User();
-//        updateUser.setId(11L);
-//        updateUser.setNickName("管理员dsfaf2");
-//        updateUser.setPhoneNumber("fdsdsgsfdsf");
-//        updateUser.setUserAccount("fds");
-//        updateUser.setUserPassword("12345678");
-//        updateUser.setUserRole("admin");
-//        userMapper.update(updateUser);
-
-
-//        // 查询
-//        List<User> users = userMapper.selectList();
-//        users.forEach(System.out::println);
-
-//        // 根据id查询
-//        userMapper.selectOne(4L);
-
-    }
-
-
-
-}

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

@@ -1,34 +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 SqlSessionFactoryUtil {
-
-
-    private static SqlSessionFactory sqlSessionFactory;
-
-    static {
-        String path = "mybatis-config.xml";
-        // 文件字节流
-        InputStream is = null;
-        try {
-            is = Resources.getResourceAsStream(path);
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-        SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
-        sqlSessionFactory = sqlSessionFactoryBuilder.build(is);
-    }
-
-
-
-    public static SqlSession getSqlSession() {
-        return sqlSessionFactory.openSession();
-    }
-}

src/main/resources/mapper/UserMapper.xml

@@ -2,7 +2,7 @@
 <!DOCTYPE mapper
         PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
-<mapper namespace="com.example.practice.mapper.UserMapper">
+<mapper namespace="sdfdsafdfd">
     <select id="selectList" resultType="com.example.practice.entity.User">
         select * from user
     </select>