web-dev-qa-db-ja.com

JEEでマルチパートデータを処理するJAX-RSサービスを定義するにはどうすればよいですか？

これは私がこれまでに持っているものです：

これは私のRESTサービスを初期化します

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 {
}

そしてこれは私のサービスがどのように見えるか：

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;
    }
}

@MultipartConfigをJaxRsActivatorに追加しようとしましたが、それでも例外が発生します：Request.getPartsはマルチパート構成なしで呼び出されます。@ MultipartConfigをサーブレットに追加するか、multipart-configを追加してくださいweb.xmlへの要素。

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)

ありがとう

javaservletsjerseyjax-rsglassfish-4
13
Ioannis Deligiannis

ついに私はジャージーカップリングなしでこれをうまく動かすことができました。問題はそれです @MultipartアノテーションはApplicationでは機能しないため、web.xml内で定義し、Applicationクラス内で提供されるサービスを定義する必要があります。サービス内では、通常どおりアノテーションを使用できます。また、リクエストからPartsを抽出していますが、これは非常に簡単です。

PS。これは実際に bluimp JQueryファイルのアップロード のバックエンドを実装します

web.xml

<servlet>
    <servlet-name>com.web.rest.JaxRsActivator</servlet-name>
    <multipart-config>
        <location>c:\dotmp</location>
        <max-file-size>35000000</max-file-size>
        <max-request-size>218018841</max-request-size>
        <file-size-threshold>0</file-size-threshold>
    </multipart-config>
</servlet>
<servlet-mapping>
    <servlet-name>com.dothatapp.web.rest.JaxRsActivator</servlet-name>
    <url-pattern>/rest/*</url-pattern>
</servlet-mapping>

JaxRsActivator.Java

    import Java.util.HashSet;
    import Java.util.Set;

    import javax.ws.rs.core.Application;

    public class JaxRsActivator extends Application {
          @Override
            public Set<Class<?>> getClasses() {
                Set<Class<?>> s = new HashSet<Class<?>>();
                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);
    }

}
14
Ioannis Deligiannis

JAX-RSでファイルのアップロードを処理する標準的な方法はないと思います。 この質問 を参照してください。ファイルのアップロードは、実装固有の方法で実行できます。これをチェックしてください Jersey 。

5
Nikos Paraskevopoulos