Run ClientChunkEncodedPost.java HttpComponents Client Example
Q
How to run the ClientChunkEncodedPost.java HttpComponents Client Example? I have httpcomponents-client-4.5.3-bin.zip installed.
✍: FYIcenter.com
A
If you have httpcomponents-client-4.5.3-bin.zip installed,
you can follow this tutorial to run the ClientChunkEncodedPost.java HttpComponents Client Example:
1. Open the example program file ClientChunkEncodedPost.java from \fyicenter\httpcomponents-client-4.5.3\examples\org\apache\http\examples\client folder:
/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* ...
*/
package org.apache.http.examples.client;
import java.io.File;
import java.io.FileInputStream;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.InputStreamEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
/**
* Example how to use unbuffered chunk-encoded POST request.
*/
public class ClientChunkEncodedPost {
public static void main(String[] args) throws Exception {
if (args.length != 1) {
System.out.println("File path not given");
System.exit(1);
}
CloseableHttpClient httpclient = HttpClients.createDefault();
try {
HttpPost httppost = new HttpPost("http://httpbin.org/post");
File file = new File(args[0]);
InputStreamEntity reqEntity = new InputStreamEntity(
new FileInputStream(file), -1, ContentType.APPLICATION_OCTET_STREAM);
reqEntity.setChunked(true);
// It may be more appropriate to use FileEntity class in this particular
// instance but we are using a more generic InputStreamEntity to demonstrate
// the capability to stream out data from any arbitrary source
//
// FileEntity entity = new FileEntity(file, "binary/octet-stream");
httppost.setEntity(reqEntity);
System.out.println("Executing request: " + httppost.getRequestLine());
CloseableHttpResponse response = httpclient.execute(httppost);
try {
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
System.out.println(EntityUtils.toString(response.getEntity()));
} finally {
response.close();
}
} finally {
httpclient.close();
}
}
}
2. Compile and run the example with Java SE 8 JDK:
\fyicenter\httpcomponents-client-4.5.3\examples>\fyicenter\jdk-1.8.0\bin\javac
-cp ..\lib\httpclient-4.5.3.jar;..\lib\httpcore-4.4.6.jar
org\apache\http\examples\client\ClientWithResponseHandler.java
\fyicenter\httpcomponents-client-4.5.3\examples>\fyicenter\jdk-1.8.0\bin\java
-cp .\;..\lib\httpclient-4.5.3.jar;..\lib\httpcore-4.4.6.jar;..\lib\commons-logging-1.2.jar
org.apache.http.examples.client.ClientChunkEncodedPost
\windows\system32\ping.exe
Executing request: POST http://httpbin.org/post HTTP/1.1
----------------------------------------
HTTP/1.1 503 Service Unavailable
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta charset="utf-8">
<title>Application Error</title>
...
Unfortunately, the service at http://httpbin.org/post is not available to confirm the test.
Â
2017-11-02, 1405👍, 0💬
