first

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

@@ -1,114 +0,0 @@
-package com.example.practice.sqlsession;
-
-import com.example.practice.entity.User;
-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;
-import java.util.List;
-
-public class SqlSessionTest {
-
-
-    public static void main(String[] args) throws IOException {
-        String path = "mybatis-config.xml";
-        // 文件字节流
-        InputStream is = Resources.getResourceAsStream(path);
-        SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
-        SqlSessionFactory sqlSessionFactory = sqlSessionFactoryBuilder.build(is);
-        // 数据库连接对象，类似于JDBC中的Connection对象, 每调用一次都会创建一次（使用连接池可进行复用）
-        SqlSession sqlSession = sqlSessionFactory.openSession();
-
-
-
-        // 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/sqlsessionTest/SqlSessionTest.java

@@ -0,0 +1,76 @@
+package com.example.practice.sqlsessionTest;
+
+import com.example.practice.entity.User;
+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;
+import java.util.List;
+
+public class SqlSessionTest {
+
+    public static void main(String[] args) throws IOException {
+
+        // 加载配置文件（转成字节流的形式）
+        String resourcePath = "mybatis-config.xml";
+        InputStream is = Resources.getResourceAsStream(resourcePath);
+
+        // 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 sqlSessionFactory = sqlSessionFactoryBuilder.build(is);
+        SqlSession sqlSession = sqlSessionFactory.openSession();
+
+//        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/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="sdfdsafdfd">
+<mapper namespace="fdsgfgd">
     <select id="selectList" resultType="com.example.practice.entity.User">
         select * from user
     </select>
@@ -24,9 +24,6 @@
     </update>
 
 
-
-
-
 </mapper>
 
         <!--SQL映射文件-->

src/main/resources/mybatis-config.xml

@@ -2,8 +2,11 @@
 <!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">
@@ -13,6 +16,7 @@
                 <property name="password" value="123456"/>
             </dataSource>
         </environment>
+
     </environments>
 
     <mappers>
@@ -20,4 +24,5 @@
     </mappers>
 
 </configuration>
-<!--Mybatis核心配置文件-->
+
+