将 @Context 参数传递给 class 中的方法
Passing @Context argument to method in class
我有一个现有的 class 我正在尝试连接以获取一些 header 参数以将用户 SSO 到我们的系统中。 class如下。
import java.util.Map;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;
import org.springframework.stereotype.Component;
@Component
@Path("/http")
public class HttpResource {
@GET
@Path("/getHeaders")
@Produces(MediaType.APPLICATION_JSON)
public Map<String, String> getAllHeaders(@Context HttpHeaders headers) {
Map<String, String> headerList = new HashMap<String, String>();
for (String key : headers.getRequestHeaders().keySet()) {
String value = headers.getRequestHeader(key).get(0);
System.out.println(key + " : " + value);
headerList.put(key, value);
}
return headerList;
}
}
我想弄清楚的是如何使用 @Context
参数调用 getAllHeaders()
?我找到了大量 class 的示例,但没有任何内容说明如何调用它。
我也试过将注释放在 class 中而不是作为参数。
@Context
HttpHeaders httpHeaders;
但是当我尝试访问 httpHeaders.getAllHeaders()
时,它 return 为空。我假设是因为它实际上并没有创建,因为 javax 文档说它永远不会 return null.
我试图在我的 SSOAuthorizationFilter.java 中调用它,但也尝试通过控制器访问它。
先写个注解
@Retention(RUNTIME)
@Target({ PARAMETER })
@Documented
public @interface SSOAuthorization {}
然后是解析器。
public class SSOAuthorizationResolver {
public static class SSOAuthorizationInjectionResolver extends
ParamInjectionResolver<SSOAuthorization> {
public SSOAuthorizationInjectionResolver() {
super(SSOAuthorizationValueFactoryProvider.class);
}
}
@Singleton
public static class SSOAuthorizationValueFactoryProvider extends
AbstractValueFactoryProvider {
@Context
private HttpHeaders httpHeaders;
@Inject
public SSOAuthorizationValueFactoryProvider(
final MultivaluedParameterExtractorProvider mpep,
final ServiceLocator injector) {
super(mpep, injector, Parameter.Source.UNKNOWN);
}
@Override
protected Factory<?> createValueFactory(final Parameter parameter) {
final Class<?> classType = parameter.getRawType();
if (!Language.class.equals(classType)
|| parameter.getAnnotation(SSOAuthorization.class) == null) {
return null;
}
return new AbstractContainerRequestValueFactory<String>() {
@Override
public String provide() {
// Can use httpHeader to get your header here.
return httpHeader.getHeaderString("SSOAuthorization");
}
};
}
}
// Binder implementation
public static class Binder extends AbstractBinder {
@Override
protected void configure() {
bind(SSOAuthorizationValueFactoryProvider.class).to(
ValueFactoryProvider.class).in(Singleton.class);
bind(SSOAuthorizationInjectionResolver.class).to(
new TypeLiteral<InjectionResolver<SSOAuthorization>>() {
}).in(Singleton.class);
}
}
}
然后在 ResourceConfig 中注册 Resolver
public class MyResourceConfig extends ResourceConfig {
public MyResourceConfig(Class... classes) {
super(classes);
register(new SSOAuthorizationResolver.Binder());
}
}
最后在带有 @SSOAuthorization
注释的控制器中使用它。
@GET
@Path("/get")
@Produces(MediaType.APPLICATION_JSON)
public String someMethod(@SSOAuthorization String auth) {
return auth;
}
我有一个现有的 class 我正在尝试连接以获取一些 header 参数以将用户 SSO 到我们的系统中。 class如下。
import java.util.Map;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;
import org.springframework.stereotype.Component;
@Component
@Path("/http")
public class HttpResource {
@GET
@Path("/getHeaders")
@Produces(MediaType.APPLICATION_JSON)
public Map<String, String> getAllHeaders(@Context HttpHeaders headers) {
Map<String, String> headerList = new HashMap<String, String>();
for (String key : headers.getRequestHeaders().keySet()) {
String value = headers.getRequestHeader(key).get(0);
System.out.println(key + " : " + value);
headerList.put(key, value);
}
return headerList;
}
}
我想弄清楚的是如何使用 @Context
参数调用 getAllHeaders()
?我找到了大量 class 的示例,但没有任何内容说明如何调用它。
我也试过将注释放在 class 中而不是作为参数。
@Context
HttpHeaders httpHeaders;
但是当我尝试访问 httpHeaders.getAllHeaders()
时,它 return 为空。我假设是因为它实际上并没有创建,因为 javax 文档说它永远不会 return null.
我试图在我的 SSOAuthorizationFilter.java 中调用它,但也尝试通过控制器访问它。
先写个注解
@Retention(RUNTIME)
@Target({ PARAMETER })
@Documented
public @interface SSOAuthorization {}
然后是解析器。
public class SSOAuthorizationResolver {
public static class SSOAuthorizationInjectionResolver extends
ParamInjectionResolver<SSOAuthorization> {
public SSOAuthorizationInjectionResolver() {
super(SSOAuthorizationValueFactoryProvider.class);
}
}
@Singleton
public static class SSOAuthorizationValueFactoryProvider extends
AbstractValueFactoryProvider {
@Context
private HttpHeaders httpHeaders;
@Inject
public SSOAuthorizationValueFactoryProvider(
final MultivaluedParameterExtractorProvider mpep,
final ServiceLocator injector) {
super(mpep, injector, Parameter.Source.UNKNOWN);
}
@Override
protected Factory<?> createValueFactory(final Parameter parameter) {
final Class<?> classType = parameter.getRawType();
if (!Language.class.equals(classType)
|| parameter.getAnnotation(SSOAuthorization.class) == null) {
return null;
}
return new AbstractContainerRequestValueFactory<String>() {
@Override
public String provide() {
// Can use httpHeader to get your header here.
return httpHeader.getHeaderString("SSOAuthorization");
}
};
}
}
// Binder implementation
public static class Binder extends AbstractBinder {
@Override
protected void configure() {
bind(SSOAuthorizationValueFactoryProvider.class).to(
ValueFactoryProvider.class).in(Singleton.class);
bind(SSOAuthorizationInjectionResolver.class).to(
new TypeLiteral<InjectionResolver<SSOAuthorization>>() {
}).in(Singleton.class);
}
}
}
然后在 ResourceConfig 中注册 Resolver
public class MyResourceConfig extends ResourceConfig {
public MyResourceConfig(Class... classes) {
super(classes);
register(new SSOAuthorizationResolver.Binder());
}
}
最后在带有 @SSOAuthorization
注释的控制器中使用它。
@GET
@Path("/get")
@Produces(MediaType.APPLICATION_JSON)
public String someMethod(@SSOAuthorization String auth) {
return auth;
}