context类java_java@Context注入在JerseyContainerRequestFilter(Dro...

&＃64;Context注入可用于类,但不能使其与对象一起使用.

ContainerRequestFilter中的httpServletRequest产生空指针.

Dropwizard版本&＃xff1a;-1.1.0

ContainerRequestFilter

public class ApplicationIPAuthFilter implements ContainerRequestFilter {

private static final Logger LOGGER &＃61; LoggerFactory.getLogger(ApplicationIPAuthFilter.class);

private HerculesRestAccessor restAccessor;

private String applicationName;

&＃64;Context

private HttpServletRequest httpServletRequest;

public ApplicationIPAuthFilter(){

}

public ApplicationIPAuthFilter(HerculesRestAccessor accessor, String applicationName) {

restAccessor &＃61; accessor;

this.applicationName &＃61; applicationName;

}

&＃64;Override

public void filter(ContainerRequestContext requestContext) throws IOException {

// need remote Ip

String remoteIp &＃61; this.httpServletRequest.getRemoteAddr();

....

}

}

动态功能

&＃64;Provider

public class ApplicationIPAuthFeature implements DynamicFeature {

private final HerculesRestAccessor accessor;

private final String applicationName;

public ApplicationIPAuthFeature(HerculesRestAccessor accessor, String applicationName) {

this.accessor &＃61; accessor;

this.applicationName &＃61; applicationName;

}

&＃64;Override

public void configure(ResourceInfo resourceInfo, FeatureContext context) {

if (resourceInfo.getResourceMethod().getAnnotation(ApplicationIPAuthRequired.class) !&＃61; null) {

// not working

context.register(new ApplicationIPAuthFilter(accessor, applicationName));

//&＃64;Context injection works in ContainerRequestFilter for classes

//context.register(ApplicationIPAuthFilter.class);

}

}

}

我正在尝试在ContainerRequestFilter中获取远程IP,以验证基于IP的请求.

我该如何解决..需要帮助&＃xff1f;