Question

使用CXF / JAX-RS在GET请求中检索大量查询参数的最佳方法是什么？显然有一个很长的@QueryParam注释列表并不理想。我看着自己使用MultiValuedMap就像这样：

@GET
@Path("/")
public Response getProjects(MultivaluedMap<String, String> queryParams);

但这导致抛出异常，由于某种原因，CFX试图处理多部分表单，所以我想MultivaluedMap仅用于表单提交，如下所示：http://cxf.apache.org/docs/jax-rs-data-bindings.html#JAX-RSDataBindings-Formpayloads。让我感到困惑的是，我猜这是一个数据检索用户案例，因此我将其映射到GET服务（并在客户端实现了GET请求），但另一方面我通过表单提交搜索参数那么处理这个问题的正确方法是什么？如何检索20 ++搜索参数？

这是一个示例请求：

GET http://localhost:8080/myapp-ws/services/setup/projects?  brandId=&_search=false&nd=1372435138080&rows=10&page=1&sidx=projectCode&sord=desc&_=1372435    119675 HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:21.0) Gecko/20100101 Firefox/21.0
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
X-Requested-With: XMLHttpRequest
Referer: http://localhost:8080/myapp-ui/projects.do
Connection: keep-alive

示例回复：

HTTP/1.1 400 Bad Request
Server: Apache-Coyote/1.1
Date: Fri, 28 Jun 2013 15:58:58 GMT
Content-Length: 0
Connection: close

使用MultivaluedMap实现从CXF服务抛出异常：

Jun 28, 2013 11:58:58 AM org.apache.cxf.jaxrs.impl.WebApplicationExceptionMapper toResponse
WARNING: javax.ws.rs.BadRequestException: java.lang.NullPointerException
at org.apache.cxf.jaxrs.provider.FormEncodingProvider.readFrom(FormEncodingProvider.java:118)
at org.apache.cxf.jaxrs.utils.JAXRSUtils.readFromMessageBodyReader(JAXRSUtils.java:1189)
at org.apache.cxf.jaxrs.utils.JAXRSUtils.readFromMessageBody(JAXRSUtils.java:1137)
at org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameter(JAXRSUtils.java:686)
at org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameters(JAXRSUtils.java:646)
at org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.processRequest(JAXRSInInterceptor.java:237)
at org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.handleMessage(JAXRSInInterceptor.java:98)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:271)
at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:239)
at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:218)
at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:163)
at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:137)
at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:158)
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:243)
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doGet(AbstractHTTPServlet.java:168)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:219)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:908)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:931)
at java.lang.Thread.run(Thread.java:773)
Caused by: java.lang.NullPointerException
at org.apache.cxf.attachment.AttachmentUtil.createAttachment(AttachmentUtil.java:294)
at org.apache.cxf.jaxrs.ext.MessageContextImpl.createAttachments(MessageContextImpl.java:252)
at org.apache.cxf.jaxrs.ext.MessageContextImpl.get(MessageContextImpl.java:75)
at org.apache.cxf.jaxrs.impl.tl.ThreadLocalMessageContext.get(ThreadLocalMessageContext.java:38)
at org.apache.cxf.jaxrs.utils.multipart.AttachmentUtils.getMultipartBody(AttachmentUtils.java:56)
at org.apache.cxf.jaxrs.provider.FormEncodingProvider.readFrom(FormEncodingProvider.java:100)
... 33 more

Answer 1

最后我找了一个很长的@QueryParam注释列表。它并没有那么糟糕，至少它暴露了一份明确的合同，每个参数都可以专门记录。

Answer 2

您可以使用@BeanParam映射多个查询参数。您可以创建一个包含要通过URL发送的所有参数的bean，并使用@BeanParam注释将该bean添加到restful服务中。所有参数都会累积到该bean中。

CXF JAX-RS：从GET请求中检索大量搜索参数

2 个答案: