[英]set resource in spring configuration file
我想在spring配置中配置推土機。 當使用xml配置時,它就像
<bean class="org.dozer.spring.DozerBeanMapperFactoryBean">
<property name="mappingFiles" value="classpath*:dozer/**/*.dzr.xml"/>
</bean>
如何在配置文件中定義資源。 我嘗試使用ctx.getResource()
但我無法訪問Configuration類中的ApplicationContext。
我嘗試了ContextRefreshedEvent並從那里添加資源,但仍然沒有運氣。 (已調用afterPropertiesSet並且添加的映射不起作用)
public class ContextRefreshedEventBuilder extends ContextRefreshedEvent {
public ContextRefreshedEventBuilder(ApplicationContext ctx) {
super(ctx);
DozerBeanMapperFactoryBean mapper = ctx.getBean(DozerBeanMapperFactoryBean.class);
try {
mapper.setMappingFiles(ctx.getResources("classpath*:dozer/**/*.dzr.xml"));
} catch (IOException e) {
e.printStackTrace();
}
}
}
還嘗試使用ClassPathResource但無法找到正確的方法
DozerBeanMapperFactoryBean mapper = new DozerBeanMapperFactoryBean();
mapper.setMappingFiles(new Resource[]{new ClassPathResource("classpath*:dozer/**/*.dzr.xml")});
return mapper;
如何將ClassPathResource添加為映射位置?
- -回答 - -
@Bean
public DozerBeanMapperFactoryBean configDozer() throws IOException {
DozerBeanMapperFactoryBean mapper = new DozerBeanMapperFactoryBean();
Resource[] resources = new PathMatchingResourcePatternResolver().getResources("classpath*:dozer/**/*.dzr.xml");
mapper.setMappingFiles(resources);
return mapper;
}
您需要使用ResourcePatternResolver
將classpath*:dozer/**/*.dzr.xml
轉換為Resource[]
。 您可以使用2種主要選項。
ApplicationContext
注入配置類,將其getResources
轉換為ResourcePatternResolver
並使用getResources
方法。 Al Spring默認應用程序上下文實現實現ResourcePatternResolver
接口。 PathMatchingResourcePatternResolver
。 ResourcePatternUtils
與注入ResourceLoader
。 使用ResourcePatternUtils
@Configuration
public class MyConfiguration {
@Autowired
private ResourceLoader resourceLoader;
public DozerBeanMapperFactoryBean mapper() throws IOException {
DozerBeanMapperFactoryBean mapper = new DozerBeanMapperFactoryBean();
// ResourceLoader is allowed to be null when using the ResourceLoaderUtils.
ResourcePatternResolver resolver = ResourceLoaderUtils.getResourcePatternResolver(resourceLoader);
Resource[] mappingFiles = resolver.getResources("classpath*:dozer/**/*.dzr.xml");
mapper.setMappingFiles(mappingFiles);
return mapper;
}
}
最后一種方法的優點是您不依賴於PathMatchingResourcePatternResolver
而只是接口。 實用程序類根據注入的ResourceLoader
確定它的作用。 人們應該更喜歡這種加載資源的方式。
使用ApplicationContext
@Configuration
public class MyConfiguration {
@Autowired
private ApplicationContext context;
public DozerBeanMapperFactoryBean mapper() throws IOException {
DozerBeanMapperFactoryBean mapper = new DozerBeanMapperFactoryBean();
Resource[] mappingFiles = ((ResourcePatternResolver) context).getResources("classpath*:dozer/**/*.dzr.xml");
mapper.setMappingFiles(mappingFiles);
return mapper;
}
}
使用PathMatchingResourcePatternResolver
@Configuration
public class MyConfiguration {
private PathMatchingPatternResolver resolver = new PathMatchingPatternResolver();
public DozerBeanMapperFactoryBean mapper() throws IOException {
DozerBeanMapperFactoryBean mapper = new DozerBeanMapperFactoryBean();
Resource[] mappingFiles = resolver.getResources("classpath*:dozer/**/*.dzr.xml");
mapper.setMappingFiles(mappingFiles);
return mapper;
}
}
或者,如果您想重用已經存在的ResourceLoader
就是稍微不同的版本:
@Configuration
public class MyConfiguration {
@Autowired
private ResourceLoader resourceLoader;
public DozerBeanMapperFactoryBean mapper() throws IOException {
DozerBeanMapperFactoryBean mapper = new DozerBeanMapperFactoryBean();
Resource[] mappingFiles = new PathMatchingPatternResolver(resourceLoader).getResources("classpath*:dozer/**/*.dzr.xml");
mapper.setMappingFiles(mappingFiles);
return mapper;
}
}
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