Java测试类

1.添加依赖

<dependency>
    <groupId>junit</groupId>  <!--junit单元测试-->
    <artifactId>junit</artifactId>
    <version>4.11</version>
    <scope>test</scope>
</dependency>

2.基本使用

import org.junit.After;
import org.junit.Before;
import org.junit.Test;


private InputStream in;
private SqlSession sqlSession;
private IUserDao userDao;

@Before//用于在测试方法执行之前执行
public void init() throws Exception {
    //1.读取配置文件，生成字节输入流
    in = Resources.getResourceAsStream("SqlMapConfig.xml");
    //2.获取SqlSessionFactory
    SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);
    //3.获取SqlSession对象
    sqlSession = factory.openSession();
    //4.获取dao的代理对象
    userDao = sqlSession.getMapper(IUserDao.class);
}


@Test  // 测试执行的方法
public void testFindAll(){
    //5.执行查询所有方法
    List<User> users = userDao.findAll();
    for(User user : users){
        System.out.println(user);
    }

}

@After//用于在测试方法执行之后执行
public void destroy() throws Exception {
    //提交事务
    sqlSession.commit();
    //6.释放资源
    sqlSession.close();
    in.close();
}