GAE上的Resteasy multipart /数据格式文件上传 [英] Resteasy multipart/data-form file upload on GAE

问题描述

我试图用resteasy 2.0.1.GA上传一个带有文件的表单到GAE应用程序中，使用如何做一个多部分/形式文件上传与jax-rs？

Index.html

 < form action =/ rest / uploadmethod =postenctype =multipart / form-data> 
< input type =textname =name/> 
< input type =filename =file/> 
< input type =submit/> 
< / form> 
  

Rest.java

  @Path（）
 public class Rest {
 @POST 
 @Path（/ rest / upload）
 @Consumes（multipart / form-data）
 public String postContent（@MultipartForm UploadForm form）{
 System.out.println（form.getData（）。length）; 
 System.out.println（form.getName（））; 
返回完成; 
 
 
 
 
  UploadForm.java   / p> 
 
 
  public class UploadForm {
 
 private String name; 
私人字节[]数据; 
 $ b @FormParam（name）
 public void setPath（String name）{
 this.name = name; 
} 
 
 public String getName（）{
 return name; 
 
 
 @FormParam（file）
 public void setContentData（byte [] data）{
 this.data = data; 
} 
 
 public byte [] getData（）{
 return data; 
 
 
 
 
 
 
 $ b 
但是我收到以下错误信息由于RESTEasy提供者使用临时文件来处理输入流）：
 
 
  HTTP错误500 
 
访问/文件/服务/上传时出现问题。原因：
 
 java.io.FileOutputStream是一个受限制的类。有关更多详细信息，请参阅Google App Engine开发人员指南。 
 
导致：
 
 java.lang.NoClassDefFoundError：java.io.FileOutputStream是一个受限制的类。有关更多详细信息，请参阅Google App Engine开发人员指南。在com.google.appengine.tools.development.agent.runtime.Runtime.reject（Runtime.java:51）
 
。在org.apache.james.mime4j.storage.TempFileStorageProvider $ TempFileStorageOutputStream<。 INIT>（TempFileStorageProvider.java:117）
。在org.apache.james.mime4j.storage.TempFileStorageProvider.createStorageOutputStream（TempFileStorageProvider.java:107）
。在org.apache.james.mime4j.storage.ThresholdStorageProvider $ ThresholdStorageOutputStream.write0（ThresholdStorageProvider.java:113）
在org.apache.james.mime4j.storage.StorageOutputStream.write（StorageOutputStream.java:119）
在org.apache.james.mime4j.codec .CodecUtil.copy（CodecUtil.java:43）
在org.apache.james.mime4j.storage.AbstractStorageProvider.store（AbstractStorageProvider.java:57）
在org.apache.james.mime4j.message .BodyFactory.textBody（BodyFactory.java:167）
 at org.apache.james.mime4j.message.MessageBuilder.body（MessageBuilder.java:148）
 at org.apache.james.mime 4j.parser.MimeStreamParser.parse（MimeStreamParser.java:101）
 at org.apache.james.mime4j.message.Message。< init>（Message.java:141）
 at org.apache .james.mime4j.message.Message<初始化>（Message.java:100）
。在org.jboss.resteasy.plugins.providers.multipart.MultipartInputImpl.parse（MultipartInputImpl.java:76）
。在org.jboss.resteasy.plugins.providers.multipart.MultipartFormAnnotationReader.readFrom（MultipartFormAnnotationReader.java:55）
在org.jboss.resteasy.core.interception.MessageBodyReaderContextImpl.proceed（MessageBodyReaderContextImpl.java:105）$在org.jboss.resteasy.plugins.interceptors.encoding.GZIPDecodingInterceptor.read（GZIPDecodingInterceptor.java:46）b $ b。在org.jboss.resteasy.core.interception.MessageBodyReaderContextImpl.proceed 
（MessageBodyReaderContextImpl.java:108 ）
 at org.jboss.resteasy.core.messagebody.ReaderUtility.doRead（ReaderUtility.java:111）
 at org.jboss.resteasy.core.messagebody.ReaderUtili ty.doRead（ReaderUtility.java:93）
在org.jboss.resteasy.core.MessageBodyParameterInjector.inject（MessageBodyParameterInjector.java:146）
在org.jboss.resteasy.core.MethodInjectorImpl.injectArguments（ MethodInjectorImpl.java:114）在org.jboss.resteasy.core.MethodInjectorImpl.invoke（MethodInjectorImpl.java:137 
）
在org.jboss.resteasy.core.ResourceMethod.invokeOnTarget（ResourceMethod.java： 252）
 at org.jboss.resteasy.core.ResourceMethod.invoke（ResourceMethod.java:217）
 at org.jboss.resteasy.core.ResourceMethod.invoke（ResourceMethod.java:206）$ b在org.jboss.resteasy.core.SynchronousDispatcher.getResponse（SynchronousDispatcher.java:514）
 $ b在org.jboss.resteasy.core.SynchronousDispatcher.invoke（SynchronousDispatcher.java:491）
。在组织.jboss.resteasy.core.SynchronousDispatcher.invoke（SynchronousDispatcher.java:120）
 at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service（ServletContainerDispatc her.java:200）在org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service 
（HttpServletDispatcher.java:48）
。在org.jboss.resteasy.plugins.server.servlet。在javax.servlet.http.HttpServlet.service HttpServletDispatcher.service（HttpServletDispatcher.java:43）
（HttpServlet.java:717）
 ... 
  
有没有人用GAE和RESTEasy遇到过这个问题？有没有人解决它？我找不到任何地方提到这个问题。 
 Thanks！ 
 
解决方案
那么，我已经找到了一个步行 - 我使用Apache公共通过将HttpServletRequest注入RESTEasy方法（并使用commons-IO将流转换为字节数组/字符串），使用RESTEasy进行上载。所有软件包都支持app引擎。
  @Path（）
 public class Rest {
 @ POST 
 @Path（/ rest / upload）
 public String postContent（@Context HttpServletRequest request）{
 ServletFileUpload upload = new ServletFileUpload（）; 
 FileItemIterator fileIterator = upload.getItemIterator（request）; 
 while（fileIterator.hasNext（））{
 FileItemStream item = fileIterator.next（）; 
 if（file.equals（item.getFieldName（）））{
 byte [] content = IOUtils.toByteArray（item.openStream（））
 //将内容保存到数据存储区
 // ... 
} else if（name.equals（item.getFieldName（）））{
 String name = IOUtils.toString（item.openStream（））; 
 //使用名称字符串
 // ... 
} 
} 
做一些事情返回完成; 
 
 
 $ / code $ / pre 
 
我宁愿找一个RESTEasy解决方案来避免fileIterator周围的简化代码。
 
I'm trying to use resteasy 2.0.1.GA to upload a form with a file in it into GAE application, using the method advised at  How do I do a multipart/form file upload with jax-rs?

Index.html
<form action="/rest/upload" method="post" enctype="multipart/form-data">
  <input type="text" name="name" />
  <input type="file" name="file" />
  <input type="submit" />
</form>
Rest.java
@Path("")
public class Rest {
    @POST
    @Path("/rest/upload")
    @Consumes("multipart/form-data")
    public String postContent(@MultipartForm UploadForm form) {
        System.out.println(form.getData().length);
        System.out.println(form.getName());
        return "Done";
    }
}
UploadForm.java
public class UploadForm {

    private String name;
    private byte[] data;

    @FormParam("name")
    public void setPath(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    @FormParam("file")
    public void setContentData(byte[] data) {
        this.data = data;
    }

    public byte[] getData() {
        return data;
    }
}
But I'm getting the following error message (probably due to the RESTEasy Provider's implmenetation that uses temporary files to handle the input stream):
HTTP ERROR 500

Problem accessing /files/service/upload. Reason:

    java.io.FileOutputStream is a restricted class. Please see the Google  App Engine developer's guide for more details.

Caused by:

java.lang.NoClassDefFoundError: java.io.FileOutputStream is a restricted class. Please see the Google  App Engine developer's guide for more details.
    at com.google.appengine.tools.development.agent.runtime.Runtime.reject(Runtime.java:51)
    at org.apache.james.mime4j.storage.TempFileStorageProvider$TempFileStorageOutputStream.<init>(TempFileStorageProvider.java:117)
    at org.apache.james.mime4j.storage.TempFileStorageProvider.createStorageOutputStream(TempFileStorageProvider.java:107)
    at org.apache.james.mime4j.storage.ThresholdStorageProvider$ThresholdStorageOutputStream.write0(ThresholdStorageProvider.java:113)
    at org.apache.james.mime4j.storage.StorageOutputStream.write(StorageOutputStream.java:119)
    at org.apache.james.mime4j.codec.CodecUtil.copy(CodecUtil.java:43)
    at org.apache.james.mime4j.storage.AbstractStorageProvider.store(AbstractStorageProvider.java:57)
    at org.apache.james.mime4j.message.BodyFactory.textBody(BodyFactory.java:167)
    at org.apache.james.mime4j.message.MessageBuilder.body(MessageBuilder.java:148)
    at org.apache.james.mime4j.parser.MimeStreamParser.parse(MimeStreamParser.java:101)
    at org.apache.james.mime4j.message.Message.<init>(Message.java:141)
    at org.apache.james.mime4j.message.Message.<init>(Message.java:100)
    at org.jboss.resteasy.plugins.providers.multipart.MultipartInputImpl.parse(MultipartInputImpl.java:76)
    at org.jboss.resteasy.plugins.providers.multipart.MultipartFormAnnotationReader.readFrom(MultipartFormAnnotationReader.java:55)
    at org.jboss.resteasy.core.interception.MessageBodyReaderContextImpl.proceed(MessageBodyReaderContextImpl.java:105)
    at org.jboss.resteasy.plugins.interceptors.encoding.GZIPDecodingInterceptor.read(GZIPDecodingInterceptor.java:46)
    at org.jboss.resteasy.core.interception.MessageBodyReaderContextImpl.proceed(MessageBodyReaderContextImpl.java:108)
    at org.jboss.resteasy.core.messagebody.ReaderUtility.doRead(ReaderUtility.java:111)
    at org.jboss.resteasy.core.messagebody.ReaderUtility.doRead(ReaderUtility.java:93)
    at org.jboss.resteasy.core.MessageBodyParameterInjector.inject(MessageBodyParameterInjector.java:146)
    at org.jboss.resteasy.core.MethodInjectorImpl.injectArguments(MethodInjectorImpl.java:114)
    at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:137)
    at org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:252)
    at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:217)
    at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:206)
    at org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:514)
    at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:491)
    at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:120)
    at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:200)
    at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:48)
    at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:43)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    ...
Has anyone encountered this issue with GAE and RESTEasy? Has anyone solved it? I couldn't find any mentioning for this issue anywhere.
Thanks!
解决方案
Well, I've found a walk-around for it - I'm using apache commons-upload with RESTEasy, by injecting the HttpServletRequest into a RESTEasy method (and transforming the streams into byte array/string using commons-IO). All packages are app engine supported.
@Path("")
public class Rest {
    @POST
    @Path("/rest/upload")
    public String postContent(@Context HttpServletRequest request) {
        ServletFileUpload upload = new ServletFileUpload();
        FileItemIterator fileIterator = upload.getItemIterator(request);
        while (fileIterator.hasNext()) {
            FileItemStream item = fileIterator.next();
            if ("file".equals(item.getFieldName())){
                byte[] content = IOUtils.toByteArray(item.openStream())
                // Save content into datastore
                // ... 
            } else if ("name".equals(item.getFieldName())){
                String name=IOUtils.toString(item.openStream());
                // Do something with the name string
                // ...
            }
        }
        return "Done";
    } 
}
I would still rather find a RESTEasy solution, to avoid the broil-up code around the fileIterator.

                        
这篇关于GAE上的Resteasy multipart /数据格式文件上传的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！