写一段BeanUtils.copyProperties示例
时间: 2023-03-03 19:39:09 浏览: 172
例子:
TestBean srcBean = new TestBean();
srcBean.setProperty1("value1");
srcBean.setProperty2("value2");
TestBean destBean = new TestBean();
BeanUtils.copyProperties(srcBean, destBean);
System.out.println("destBean.getProperty1() = " + destBean.getProperty1());
System.out.println("destBean.getProperty2() = " + destBean.getProperty2());示例:TestBean srcBean = new TestBean(); srcBean.setProperty1("value1"); srcBean.setProperty2("value2"); TestBean destBean = new TestBean(); BeanUtils.copyProperties(srcBean, destBean); System.out.println("destBean.getProperty1() = " + destBean.getProperty1()); System.out.println("destBean.getProperty2() = " + destBean.getProperty2());
相关问题
beanutils.copyproperties怎么确保只复制非空字段
在使用`BeanUtils.copyProperties`方法时,可以通过自定义`Converter`来控制复制属性的行为。可以创建一个`Converter`实现,然后在调用`copyProperties`方法时传递给它。在自定义的`Converter`实现中,可以检查源对象的属性是否为空,如果为空,则不复制该属性。
下面是一个示例:
```java
public class NonNullConverter implements Converter {
@Override
public Object convert(Class type, Object value) {
if (value == null) {
return null;
}
return value;
}
}
public void copyProperties(Object dest, Object orig) {
// 创建一个自定义的 Converter
Converter converter = new NonNullConverter();
// 设置 BeanUtils 的 Converter
BeanUtilsBean beanUtilsBean = new BeanUtilsBean(new ConvertUtilsBean(), new PropertyUtilsBean());
beanUtilsBean.getConvertUtils().register(converter, String.class);
// 复制属性
BeanUtils.copyProperties(dest, orig);
}
```
在这个示例中,`NonNullConverter`实现了`Converter`接口,它的作用是将空值转换成`null`,避免复制空值。然后在`copyProperties`方法中,创建了一个自定义的`Converter`实例,并通过`BeanUtilsBean`设置到了`BeanUtils`中,这样在调用`copyProperties`方法时,就会使用自定义的`Converter`来处理属性复制的行为。
根据这段代码帮我写一份单元测试: public ApiResult getProByEnterpriseIds(List<Long> enterpriseIds) { List<OrganizationVO> vos = new ArrayList<>(); List<OrganizationEntity> organizationEntityList = organizationMapper.selectList( new QueryWrapper<OrganizationEntity>().lambda() .in(OrganizationEntity::getEnterpriseId, enterpriseIds) .eq(OrganizationEntity::getTypeCode, "project")); for (OrganizationEntity entity : organizationEntityList) { OrganizationVO vo = new OrganizationVO(); BeanUtils.copyProperties(entity, vo); vo.setEnterpriseId(entity.getEnterpriseId()); vos.add(vo); } return ApiResult.success(vos); }
好的,根据你提供的代码,我为你编写了一个单元测试的示例代码,如下所示:
```java
@RunWith(MockitoJUnitRunner.class)
public class OrganizationServiceTest {
@Mock
private OrganizationMapper organizationMapper;
@InjectMocks
private OrganizationServiceImpl organizationService;
@Test
public void testGetProByEnterpriseIds() {
// 构造测试数据
List<Long> enterpriseIds = Arrays.asList(1L, 2L, 3L);
List<OrganizationEntity> organizationEntityList = Arrays.asList(
new OrganizationEntity(1L, "project", "Project A", 1L),
new OrganizationEntity(2L, "project", "Project B", 2L),
new OrganizationEntity(3L, "project", "Project C", 3L)
);
when(organizationMapper.selectList(any())).thenReturn(organizationEntityList);
// 执行被测试的方法
ApiResult result = organizationService.getProByEnterpriseIds(enterpriseIds);
// 验证结果是否正确
verify(organizationMapper).selectList(any());
assertEquals(3, result.getData().size());
assertEquals("Project A", result.getData().get(0).getName());
assertEquals("Project B", result.getData().get(1).getName());
assertEquals("Project C", result.getData().get(2).getName());
}
}
```
这个示例代码使用了Mockito框架对`OrganizationMapper`进行了mock,并且注入到了`OrganizationServiceImpl`中。在测试方法中,我们构造了测试数据,并且使用`when`方法为`organizationMapper.selectList`方法设置了有效的返回值。然后,我们调用被测试的`organizationService.getProByEnterpriseIds`方法,并且验证方法是否正确执行。最后,我们使用`assertEquals`方法来验证返回的结果是否正确。
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