Hello
I am new with CloseableHttpClient and HttpPut and want to use them, because
with java core HttpUrlConnection class I have to fully populate OutputStream
with data, before it starts transfer to server. While my data to send size
is big, this is not fits my need, because takes too much RAM. Data
collection speed much less than upload speed to server, where I want to PUT
data, so I want to use HttpPut with output stream. I was able to swithch
from Java core class and make PUT request with CloseableHttpClient and
HttpPut but only with short String data by ByteArrayEntity. When I try to
PUT with OutputStream, I get no errors/exceptions, but data entity not
transferred. After run I see on target server updated file, with zero
length. My network Interface traffic very small and looks like no entity
data transferred. Here my custom AbstractHttpEntity:
AbstractHttpEntity entity = new AbstractHttpEntity() {
@Override
public void writeTo(OutputStream outstream) throws
IOException {
for (Integer i=0; i<5000000; i++){
String dataString = i+" data string.";
outstream.write(dataString.getBytes(Charset.forName("UTF-8")));
}
}
@Override
public boolean isStreaming() {
return true;
}
@Override
public boolean isRepeatable() {
return true;
}
@Override
public long getContentLength() {
return -1;
}
@Override
public InputStream getContent() throws IOException,
UnsupportedOperationException {
throw new UnsupportedOperationException();
//return null;
}
};
In debugger I see writeTo method call and in loop writes to outstream. I
also played a bit with expect continue, like:
HttpPut putRequest = new HttpPut(url.toString());
RequestConfig defaultRequestConfig =
RequestConfig.custom().setExpectContinueEnabled(true).build();
putRequest.setConfig(defaultRequestConfig);
or
putRequest.addHeader(HTTP.EXPECT_DIRECTIVE,
HTTP.EXPECT_CONTINUE);
But this not helps. Here also my dependencies:
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.1</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpcore</artifactId>
<version>4.4.4</version>
</dependency>
Please help how to figure this out. Everything looks like works, but
actually data not transfer.
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