java - 以 InputStream 格式将文本文件从 .Net http 客户端上传到 Java REST API

Question

我有一个案例，我想以 InputStream 格式将文本文件从 .Net http 客户端上传到 Java REST API。当我使用 Form-Data Body 中的文件从 Postman 访问 Java REST 时，该文件在 Java REST 服务中接收得非常好。当我从 .Net 客户端尝试同样的事情时，我遇到了一些异常，如下所示。

我的 .Net HTTP 客户端代码如下，

var client = new HttpClient();
client.BaseAddress = new Uri("http://localhost:8082/processes/view/createDocumentfromFile/851");
client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.Add("procId", "100");
client.DefaultRequestHeaders.Add("DocName", "ProphetWorkflow");
var content = new MultipartFormDataContent();
content.Add(new ByteArrayContent(File.ReadAllBytes(@"C:\Users\charan.ghate\Desktop\Calculation.txt")));
HttpResponseMessage messge = client.PostAsync(client.BaseAddress, content).Result;
if (messge.IsSuccessStatusCode)
{
    string result = messge.Content.ReadAsStringAsync().Result;
    lblResponse.Text = result;
}

我的 Java REST 服务代码如下，

@POST
@Path("/createDocumentfromFile/{procId}")
@Consumes({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML, MediaType.TEXT_PLAIN })
@Produces({ MediaType.APPLICATION_JSON })
public Response createDocumentfromFile(@PathParam("procId") Long piOID, @HeaderParam("DocName") String modulename,
        @Context HttpServletRequest request, @Context HttpServletResponse response,
        @FormDataParam("file") InputStream uploadedInputStream) {
//
//Operation on the input stream
//
}

当我访问 REST API 时，我在 .Net 和 Java 中都遇到了异常，详情如下

.Net 错误信息:

StatusCode: 500, ReasonPhrase: 'Internal Server Error', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
  Connection: close
  Date: Fri, 23 Dec 2016 15:08:03 GMT
  Server: Apache-Coyote/1.

Java 异常:

    Dec 23, 2016 8:38:03 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [cxf-jaxrs-servlet] in context with path [/ipp-portal] threw exception [Servlet execution threw an exception] with root cause
java.lang.NoSuchMethodError: javax.ws.rs.ClientErrorException.validate(Ljavax/ws/rs/core/Response;Ljavax/ws/rs/core/Response$Status$Family;)Ljavax/ws/rs/core/Response;
    at javax.ws.rs.ClientErrorException.<init>(ClientErrorException.java:88)
    at org.apache.cxf.jaxrs.utils.JAXRSUtils.findTargetMethod(JAXRSUtils.java:503)
    at org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.processRequest(JAXRSInInterceptor.java:198)
    at org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.handleMessage(JAXRSInInterceptor.java:90)
    at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272)
    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:248)
    at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:222)
    at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:153)
    at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:167)
    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:286)
    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:206)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
    at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:262)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.eclipse.stardust.ui.web.html5.EnhancedJarResourceFilter.doFilter(EnhancedJarResourceFilter.java:140)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at com.icesoft.faces.webapp.http.servlet.TouchSessionFilter.doFilter(TouchSessionFilter.java:77)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)

能否请您建议我将文件从 .Net 客户端传输到 Java REST 服务的最佳方法。

Answer 1

异常

java.lang.NoSuchMethodError: javax.ws.rs.ClientErrorException.validate(Ljavax/ws/rs/core/Response;Ljavax/ws/rs/core/Response$Status$Family;)Ljavax/ws/rs/core/Response;

表示它尝试在运行时从 ClientErrorException 类中获取类型为 Response validate(final Response response, Response.Status.Family expectedStatusFamily) 的方法，它不能寻找。

当您使用库的一个版本构建应用程序并针对不兼容的不同版本运行它时，通常会发生这种情况。

知道自 JAX-RS 2.0 以来添加了此方法，我相信您使用 JAX-RS 2.0 或更高版本编译了代码并且您有一个版本 1.x 在您的类路径中，而不是在运行时使用。检查运行时使用的类路径，并确保您只有与编译时使用的相同版本的 JAX-RS。