Spring--7.dao,service,controller测试_controller entity service mapper测试题-优快云博客

本文介绍了如何使用Maven配置单元测试和Spring测试环境，并通过示例展示了如何使用PageHelper进行分页查询以及如何通过Spring的注解方式来实现DAO层的测试。

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1 基本

1.1 配置maven包

<!-- 单元测试 -->
<dependency>
  <groupId>junit</groupId>
  <artifactId>junit</artifactId>
  <version>${junit.version}</version>
  <scope>test</scope>
</dependency>
 
<!-- Spring test -->
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-test</artifactId>
  <version>${spring.version}</version>
</dependency>

基本引入

2 Dao

2.1 目录结构

2.2 常规

public class PageHelperTest {

    private ApplicationContext applicationContext;

    @Before
    public void before(){
        applicationContext = new ClassPathXmlApplicationContext("classpath:spring/applicationContext-*.xml");
    }

    @Test
    public void testPageHelper() throws Exception {
        //获得Mapper的代理对象
        TbItemMapper itemMapper = applicationContext.getBean(TbItemMapper.class);
        //设置分页信息
        PageHelper.startPage(1, 30);
        //执行查询
        TbItemExample example = new TbItemExample();
        List<TbItem> list = itemMapper.selectByExample(example);
        //取分页信息
        PageInfo<TbItem> pageInfo = new PageInfo<>(list);
        System.out.println(pageInfo.getTotal());
        System.out.println(pageInfo.getPages());
        System.out.println(pageInfo.getPageNum());
        System.out.println(pageInfo.getPageSize());
    }

}

2.3 注解

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:spring/applicationContext-*.xml" })
public class ItemServiceImplTest {
    @Autowired
    protected TbItemMapper itemMapper;

    @Test
    public void getItemById() throws Exception {
        TbItem item = itemMapper.selectByPrimaryKey(830972L);
        System.out.println(item);
    }

}