httpPost发送字节流方法

发送字节流的post方法，代码：

public byte[] post(String url,byte[] bytes) throws Exception {

HttpPost httpPost = new HttpPost(url);

httpPost.setEntity(new ByteArrayEntity(bytes));

httpPost.setHeader("Content-type", "application/octet-stream;charset=UTF-8");

//这里是设置虚拟IP

String remoteIp = (int) (Math.random() * 255 + 1)+"."+(int) (Math.random() * 255 + 1)+"."+(int) (Math.random() * 255 + 1)+"."+(int) (Math.random() * 255 + 1);

httpPost.setHeader("X-Forwarded-For",remoteIp);

CloseableHttpResponse httpResponse = HttpClients.createDefault().execute(httpPost);

try {

HttpEntity entityResponse = httpResponse.getEntity();

int responseCode = httpResponse.getStatusLine().getStatusCode();

int contentLength = (int) entityResponse.getContentLength();

// OutputStream out = new ByteArrayOutputStream(contentLength);

if (contentLength <= 0)

throw new IOException("No response");

int total = 0;

int len ;

//respBuffer是一个缓存数组，缓存InputStream.read()的数据，由于可能一次取不全，所以分多次取，最后是-1时候不取了结束了

byte[] respBuffer = new byte[contentLength];

byte[] respBuffer1 = new byte[contentLength];

while ((len = entityResponse.getContent().read(respBuffer)) != -1 ){

for (int i=0;i<len;i++){

respBuffer1[total+i] = respBuffer[i];

}

total = total + len;

}

// System.out.println(entityResponse.getContent().read(respBuffer,0,contentLength));

if (total != respBuffer.length)

throw new IOException("Read response buffer error");

return respBuffer1;

} finally {

httpResponse.close();

}

}

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原文链接：https://blog.csdn.net/xpf094/article/details/85627829