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，拥有很长的@QueryParam注释列表并不理想。我看着MultiValuedMap像这样单独使用：
@GET
@Path("/")
public Response getProjects(MultivaluedMap<String, String> queryParams);
但这导致抛出异常，出于某种原因，CFX 试图处理多部分表单，所以我猜MultivaluedMap只是表单提交，如此处所述：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，所以我将它映射到一个 GET 服务（并在客户端实现了一个 GET 请求），但另一方面，我正在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？如何检索我的 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
示例响应：
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 实现的 CXF 服务引发的异常：
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