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我正在尝试调用基于 java REST 的服务来使用 MULTIPART 上传二进制文件（70 MB）。它成功地为 60 MB 文件工作，但每当我超过文件大小时，在客户端控制台上出现以下异常：

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
    at java.util.Arrays.copyOf(Arrays.java:2271)
    at java.io.ByteArrayOutputStream.grow(ByteArrayOutputStream.java:113)
    at java.io.ByteArrayOutputStream.ensureCapacity(ByteArrayOutputStream.java:93)
    at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:140)
    at sun.net.www.http.PosterOutputStream.write(PosterOutputStream.java:78)
    at `enter code here`com.sun.jersey.api.client.CommittingOutputStream.write(CommittingOutputStream.java:90)
    at com.sun.jersey.core.util.ReaderWriter.writeTo(ReaderWriter.java:115)
    at com.sun.jersey.core.provider.AbstractMessageReaderWriterProvider.writeTo(AbstractMessageReaderWriterProvider.java:76)
    at com.sun.jersey.core.impl.provider.entity.FileProvider.writeTo(FileProvider.java:103)
    at com.sun.jersey.core.impl.provider.entity.FileProvider.writeTo(FileProvider.java:64)
    at com.sun.jersey.multipart.impl.MultiPartWriter.writeTo(MultiPartWriter.java:218)
    at com.sun.jersey.multipart.impl.MultiPartWriter.writeTo(MultiPartWriter.java:71)
    at com.sun.jersey.api.client.RequestWriter.writeRequestEntity(RequestWriter.java:300)
    at com.sun.jersey.client.urlconnection.URLConnectionClientHandler._invoke(URLConnectionClientHandler.java:213)
    at com.sun.jersey.client.urlconnection.URLConnectionClientHandler.handle(URLConnectionClientHandler.java:149)
    at com.sun.jersey.api.client.Client.handle(Client.java:648)
    at com.sun.jersey.api.client.WebResource.handle(WebResource.java:680)
    at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74)
    at com.sun.jersey.api.client.WebResource$Builder.post(WebResource.java:568)
    at

我尝试过使用 jvm 参数，但没有运气。

请帮忙

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1 回答 1

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我认为您用于new File()获取文件数据，但最好使用 InputStream：

InputStream fileInStream = new FileInputStream(fileName);
String sContentDisposition = "attachment; filename=\"" + fileName.getName()+"\"";
WebResource fileResource = a_client.resource(a_sUrl);       
ClientResponse response = fileResource.type(MediaType.APPLICATION_OCTET_STREAM)
                        .header("Content-Disposition", sContentDisposition)
                        .post(ClientResponse.class, fileInStream);
于 2014-09-20T06:26:59.957 回答