CloseableHttpClient 读取响应 Stream closed

org.apache.http.impl.client.CloseableHttpClient 读取响应 Stream closed

现场

在使用HttpClient的时候，读取响应的时候，总提示流被关闭。

CloseableHttpClient httpClient = HttpClients.createDefault();
HttpResponse httpResponse = execute(httpClient, httpPost);
try {
    EntityUtils.toByteArray(httpResponse.getEntity());
    EntityUtils.toString(httpResponse.getEntity());
} catch (IOException e) {
    e.printStackTrace();
}

错误

发现报错，错误如下：

java.io.IOException: Stream closed
	at java.util.zip.GZIPInputStream.ensureOpen(GZIPInputStream.java:62)
	at java.util.zip.GZIPInputStream.read(GZIPInputStream.java:113)
	at org.apache.http.client.entity.LazyDecompressingInputStream.read(LazyDecompressingInputStream.java:70)
	at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
	at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
	at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
	at java.io.InputStreamReader.read(InputStreamReader.java:184)
	at java.io.Reader.read(Reader.java:140)
	at org.apache.http.util.EntityUtils.toString(EntityUtils.java:227)

问题原因

既然输出流被关闭，肯定是读完之后被恶意关闭了。找到源码。

出现这种问题，是因为EntityUtils操作了2次，toByteArray读完了，直接关闭了输出流。toString也是，读完了直接关闭。