错误:
java.lang.NullPointerException
at com.bcl.vacancy.demo.mybatisplus.mytest.MyTest.MyTest(MyTest.java:26)
at java.util.ArrayList.forEach(ArrayList.java:1259)
at java.util.ArrayList.forEach(ArrayList.java:1259)
测试代码:
@SpringBootTest
public class MyTest {
@Resource
private UserMapper userMapper;
@Test
public void MyTest(){
User user = new User(11,"三三",201,"女","1");
int insert = userMapper.insert(user);
System.out.println("insert = " + insert);
}
}
解决方法:在测试类头上加入:@SpringBootTest注解,即可解决。