mybatis change 5

mybatis_train/src/main/java/com/pojo/entity/UserEntity.java

@@ -2,8 +2,10 @@ package com.pojo.entity;
 
 import lombok.Data;
 
+import java.io.Serializable;
+
 @Data
-public class UserEntity {
+public class UserEntity implements Serializable {
     private Integer id;
     private String name;
     private Integer age;

mybatis_train/src/main/resources/com/mapper/UserMapper.xml

@@ -4,6 +4,7 @@
         "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 <mapper namespace="com.mapper.UserMapper">
 <!--    sql语句抽取-->
+    <cache />
     <sql id="all">select * from user</sql>
 <select id="findUserListByCondition" resultType="user"
         parameterType="user" >

mybatis_train/src/test/java/Test3.java

@@ -19,12 +19,15 @@ import java.util.List;
 
 public class Test3 {
     UserMapper userMapper;
+    UserMapper userMapper2;
     SqlSession sqlSession;
+    SqlSession sqlSession2;
     @Before
     public void before() throws IOException {
         InputStream resourceAsStream = Resources.getResourceAsStream("mybatisConfig.xml");
         SqlSessionFactory build = new SqlSessionFactoryBuilder().build(resourceAsStream);
         sqlSession = build.openSession(true);
+        sqlSession2 = build.openSession(true);
         userMapper = sqlSession.getMapper(UserMapper.class);
     }
     @Test
@@ -43,6 +46,35 @@ public class Test3 {
 //        integers.add(2);
         List<UserEntity> userForEach = userMapper.findUserForEach(integers);
     }
+
+    /**
+     * 测试一级缓存
+     */
+    @Test
+    public void testCache() {
+        userMapper2 = sqlSession.getMapper(UserMapper.class);
+        ArrayList<Integer> integers = new ArrayList<>();
+//        integers.add(1);
+//        integers.add(2);
+        List<UserEntity> userForEach1 = userMapper.findUserForEach(integers);
+        List<UserEntity> userForEach2 = userMapper2.findUserForEach(integers);
+    }
+
+    /**
+     * 二级缓存 sqlSessionFactory级别
+     */
+    @Test
+    public void testTwoCache() {
+        ArrayList<Integer> integers = new ArrayList<>();
+        UserMapper mapper1 = sqlSession.getMapper(UserMapper.class);
+        UserMapper mapper2 = sqlSession2.getMapper(UserMapper.class);
+        List<UserEntity> userForEach1 = mapper1.findUserForEach(integers);
+        sqlSession.close();
+        List<UserEntity> userForEach2 = mapper2.findUserForEach(integers);
+        sqlSession2.close();
+
+    }
+
     @Test
     public void delete() {
         userMapper.deleteOne(2);