@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：-1.1.0

ContainerRequestFilter

public class ApplicationIPAuthFilter implements ContainerRequestFilter {

private static final Logger LOGGER = LoggerFactory.getLogger(ApplicationIPAuthFilter.class);

private HerculesRestAccessor restAccessor;

private String applicationName;

@Context

private HttpServletRequest httpServletRequest;

public ApplicationIPAuthFilter(){

}

public ApplicationIPAuthFilter(HerculesRestAccessor accessor, String applicationName) {

restAccessor = accessor;

this.applicationName = applicationName;

}

@Override

public void filter(ContainerRequestContext requestContext) throws IOException {

// need remote Ip

String remoteIp = this.httpServletRequest.getRemoteAddr();

....

}

}

动态功能

@Provider

public class ApplicationIPAuthFeature implements DynamicFeature {

private final HerculesRestAccessor accessor;

private final String applicationName;

public ApplicationIPAuthFeature(HerculesRestAccessor accessor, String applicationName) {

this.accessor = accessor;

this.applicationName = applicationName;

}

@Override

public void configure(ResourceInfo resourceInfo, FeatureContext context) {

if (resourceInfo.getResourceMethod().getAnnotation(ApplicationIPAuthRequired.class) != null) {

// not working

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

//@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？