sql执行分析

• pom.xml

<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-boot-starter</artifactId>
</dependency>

• application.yml

mybatis-plus:
  global-config:
    db-config:
      id-type: ASSIGN_ID
      capital-mode: true
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

• 配置类

@Configuration
public class MybatisPlusConfig {

    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new BlockAttackInnerInterceptor());
        return interceptor;
    }
}

• 测试

@Slf4j
@SpringBootTest
class ExecutionTest {

    @Autowired
    private StudentMapper studentMapper;

    @Test
    void test() {
        studentMapper.selectList(new QueryWrapper<>());
        studentMapper.deleteById(1L);
        Student student = new Student();
        student.setName("test_update");
        studentMapper.insert(new Student(1L, "test", 12));
        studentMapper.update(student, new QueryWrapper<Student>().eq("id", 1L));
        try {
            studentMapper.update(new Student(), new QueryWrapper<>());
        } catch (MyBatisSystemException e) {
        }
        try {
            studentMapper.delete(new QueryWrapper<>());
        } catch (MyBatisSystemException e) {
            System.err.println("执行了全表删除拦截，删除无效！异常：" + e.getMessage());
        }
        Assertions.assertTrue(CollectionUtils.isNotEmpty(studentMapper.selectList(new QueryWrapper<>())), "数据都被删掉了.(┬＿┬)");
    }
}

• 控制台

SELECT ID,NAME,AGE FROM student
==> Parameters: 
<==      Total: 0
DELETE FROM student WHERE ID=?
==> Parameters: 1(Long)
<==    Updates: 0
INSERT INTO student ( ID, NAME, AGE ) VALUES ( ?, ?, ? )
==> Parameters: 1(Long), test(String), 12(Integer)
<==    Updates: 1
UPDATE student SET NAME=? WHERE (id = ?)
==> Parameters: test_update(String), 1(Long)
<==    Updates: 1
执行了全表删除拦截，删除无效！异常：nested exception is org.apache.ibatis.exceptions.PersistenceException: 
### Error updating database.  Cause: com.baomidou.mybatisplus.core.exceptions.MybatisPlusException: Prohibition of full table deletion
### The error may exist in com/baomidou/samples/execution/mapper/StudentMapper.java (best guess)
### The error may involve com.baomidou.samples.execution.mapper.StudentMapper.delete
### The error occurred while executing an update
### Cause: com.baomidou.mybatisplus.core.exceptions.MybatisPlusException: Prohibition of full table deletion
SELECT ID,NAME,AGE FROM student
==> Parameters: 
<==    Columns: ID, NAME, AGE
<==        Row: 1, test_update, 12
<==      Total: 1