我正在开发一个Spring Boot项目。我只有注释配置。我想包括推土机将实体转换为DTO,将DTO转换为实体。我在dozer网站上看到,他们解释说我必须在spring xml配置文件中添加以下配置。由于我没有xml文件而是注释配置Java类,我不知道如何将其转换为Java Configuration类。
<bean id="org.dozer.Mapper" class="org.dozer.DozerBeanMapper">
<property name="mappingFiles">
<list>
<value>dozer-global-configuration.xml</value>
<value>dozer-bean-mappings.xml</value>
<value>more-dozer-bean-mappings.xml</value>
</list>
</property>
</bean>
如果有人能给我一个例子,它会非常有用。感谢
答案 0 :(得分:17)
我认为这样的事情应该有效:
@Configuration
public class YourConfiguration {
@Bean(name = "org.dozer.Mapper")
public DozerBeanMapper dozerBean() {
List<String> mappingFiles = Arrays.asList(
"dozer-global-configuration.xml",
"dozer-bean-mappings.xml",
"more-dozer-bean-mappings.xml"
);
DozerBeanMapper dozerBean = new DozerBeanMapper();
dozerBean.setMappingFiles(mappingFiles);
return dozerBean;
}
...
}
答案 1 :(得分:8)
如果您使用DozerBeanMapperFactoryBean
代替DozerBeanMapper
,则可以使用此类内容。
@Configuration
public class MappingConfiguration {
@Bean
public DozerBeanMapperFactoryBean dozerBeanMapperFactoryBean(@Value("classpath*:mappings/*mappings.xml") Resource[] resources) throws Exception {
final DozerBeanMapperFactoryBean dozerBeanMapperFactoryBean = new DozerBeanMapperFactoryBean();
// Other configurations
dozerBeanMapperFactoryBean.setMappingFiles(resources);
return dozerBeanMapperFactoryBean;
}
}
这样您就可以自动导入映射。而不是简单地注入你的Mapper并使用。
@Autowired
private Mapper mapper;
使用Dozer 5.5.1进行更新
在dozer 5.5.1中,删除了DozerBeanMapperFactoryBean。因此,如果您想使用更新版本,则需要执行以下操作,
@Bean
public Mapper mapper(@Value(value = "classpath*:mappings/*mappings.xml") Resource[] resourceArray) throws IOException {
List<String> mappingFileUrlList = new ArrayList<>();
for (Resource resource : resourceArray) {
mappingFileUrlList.add(String.valueOf(resource.getURL()));
}
DozerBeanMapper dozerBeanMapper = new DozerBeanMapper();
dozerBeanMapper.setMappingFiles(mappingFileUrlList);
return dozerBeanMapper;
}
现在按照上面的说法注入mapper
@Autowired
private Mapper mapper;
并使用如下例子,
mapper.map(source_object, destination.class);
例如。 mapper.map(admin,UserDTO.class);
答案 2 :(得分:8)
以防万一有人想要避免使用xml推文文件。您可以直接在java中使用构建器。对我来说,它是注释Spring上下文的方式。
上查看更多信息 @Bean
public DozerBeanMapper mapper() throws Exception {
DozerBeanMapper mapper = new DozerBeanMapper();
mapper.addMapping(objectMappingBuilder);
return mapper;
}
BeanMappingBuilder objectMappingBuilder = new BeanMappingBuilder() {
@Override
protected void configure() {
mapping(Bean1.class, Bean2.class)
.fields("id", "id").fields("name", "name");
}
};
就我而言,效率更高(至少第一次)。没有做任何基准或任何事情。