Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException

呱

发布于 2020-10-23 10:49:34

1.9K0

发布于 2020-10-23 10:49:34

文章被收录于专栏：后端JavaEE

1.错误截图

自己在idea中写一个测试类,也不能删除pid为1的那条数据，报错如下

package test;

import entity.Product;
import mapper.ProductMapper;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

/**
 * zt
 * 2020/10/12
 * 21:38
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:application.xml")
public class TestMapper {
    @Autowired
    private ProductMapper mapper;
    @Test
    public void test1(){
        Product p = new Product();
        p.setTid(1);
        p.setPname("aaa");
        mapper.add(p);
    }

    @Test
    public void test2(){

        mapper.delete(2);
    }

}