如何定义在JEE中处理多部分数据的JAX-RS服务?

这是我到目前为止:

这初始化了我的REST服务

package com.dothatapp.web.rest; import javax.servlet.annotation.MultipartConfig; import javax.ws.rs.ApplicationPath; import javax.ws.rs.core.Application; @ApplicationPath("/authed/rest") public class JaxRsActivator extends Application { } 

这就是我的服务:

 import javax.servlet.http.HttpServletRequest; import javax.ws.rs.Consumes; import javax.ws.rs.POST; import javax.ws.rs.Path; import javax.ws.rs.Produces; import javax.ws.rs.core.Context; import javax.ws.rs.core.MediaType; import javax.ws.rs.core.UriInfo; import org.json.JSONObject; @Path("fileupload") public class FileUpload { @Context private UriInfo context; @POST @Consumes(MediaType.MULTIPART_FORM_DATA) @Produces(MediaType.APPLICATION_JSON) public JSONObject doUpload(@Context HttpServletRequest obj) { try { obj.getParts(); } catch (Exception e) { e.printStackTrace(); } System.out.println(us); System.out.println(es); System.out.println(obj); return null; } } 

我尝试将@MultipartConfig添加到JaxRsActivator ,但我仍然得到一个例外: 在没有多部分配置的情况下调用Request.getParts。 将@MultipartConfig添加到servlet,或将multipart-config元素添加到web.xml

 3-12-08T17:03:05.013+0000|SEVERE: java.lang.IllegalStateException: Request.getParts is called without multipart configuration. Either add a @MultipartConfig to the servlet, or a multipart-config element to web.xml at org.apache.catalina.connector.Request.checkMultipartConfiguration(Request.java:4522) at org.apache.catalina.connector.Request.getParts(Request.java:4528) at org.apache.catalina.connector.RequestFacade.getParts(RequestFacade.java:1086) at com.dothatapp.web.rest.FileUpload.doUpload(FileUpload.java:36) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81) at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:125) at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:195) at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:91) at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:346) at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:341) at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:101) at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:224) at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271) at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267) at org.glassfish.jersey.internal.Errors.process(Errors.java:315) at org.glassfish.jersey.internal.Errors.process(Errors.java:297) at org.glassfish.jersey.internal.Errors.process(Errors.java:267) at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317) at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:198) at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:946) at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:323) at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:372) at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:335) at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:218) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:344) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) at com.dothatapp.web.filter.DoThatAppFilter.doFilter(DoThatAppFilter.java:27) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) at com.dothatapp.web.filter.AuthFilter.doFilter(AuthFilter.java:113) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:316) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188) at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191) at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168) at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189) at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288) at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206) at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136) at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114) at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838) at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113) at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115) at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55) at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135) at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564) at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544) at java.lang.Thread.run(Thread.java:724) 

谢谢

最后,我设法让这个工作没有泽西耦合。 问题是@Multipart注释不适用于Application ,因此您需要在web.xml中定义它,并在Application类中定义提供的服务。 在服务中,您可以正常使用注释。 另请注意,我正在从请求中提取Parts ,但这很容易。

PS。 这实际上实现了bluimp JQuery文件上传的后端

web.xml中

  com.web.rest.JaxRsActivator  c:\dotmp 35000000 218018841 0    com.dothatapp.web.rest.JaxRsActivator /rest/*  

JaxRsActivator.java

  import java.util.HashSet; import java.util.Set; import javax.ws.rs.core.Application; public class JaxRsActivator extends Application { @Override public Set> getClasses() { Set> s = new HashSet>(); s.add(FileUpload.class); return s; } } 

FileUpload.java

 import java.io.IOException; import javax.json.Json; import javax.json.JsonArrayBuilder; import javax.json.JsonObject; import javax.json.JsonObjectBuilder; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.Part; import javax.ws.rs.POST; import javax.ws.rs.Path; import javax.ws.rs.Produces; import javax.ws.rs.core.Context; import javax.ws.rs.core.MediaType; import javax.ws.rs.core.Response; @Path("/") public class FileUpload { @POST @Produces(MediaType.APPLICATION_JSON) @Path("fileupload") public Response doUpload(@Context HttpServletRequest request) { JsonArrayBuilder array = Json.createArrayBuilder(); try { for (Part part : request.getParts()) { String name = null; long size = 0; try { if (part.getContentType() == null || !part.getContentType().toLowerCase() .startsWith("image/")) continue; name = part.getSubmittedFileName(); size = part.getSize(); array.add(addFile(name, size, "anId")); part.delete(); } catch (Exception e) { array.add(addError(name, size, "ERROR")); } } } catch (IOException | ServletException e) { e.printStackTrace(); } JsonObject ret = Json.createObjectBuilder().add("files", array).build(); return Response.status(201).entity(ret).build(); } private JsonObjectBuilder addFile(String name, long size, String url) { return Json.createObjectBuilder().add("name", name).add("size", size) .add("lid", url); } private JsonObjectBuilder addError(String name, long size, String error) { return Json.createObjectBuilder().add("name", name).add("size", size) .add("error", error); } } 

我相信没有标准的方法来处理使用JAX-RS的文件上传。 看到这个问题 。 文件上传可以通过具体的实现方式完成,请查看泽西岛 。